Service Manual
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Sirona Dental Systems GmbH
Service Manual CEREC AC
Table of contents 1
2
3 4
2
General information.................................................................................................. information ..................................................................................................
5
1.1
General iin nformation .......................................................................................
5
1.2
Additional in infformation ....................................................................................
6
Troubleshooting........................................................................................................ Troubleshooting ........................................................................................................
7
2.1
Sys yste tem m ca canno nnot be be swit switc ched hed on .....................................................................
8
2.2
PC no not bo booting co correctly ................................................................................
11
2.3
PC doe does s not not respon respond d when when swi switch tched ed on, on, PC PC power power supply supply do does es not not start start... ...
14
2.4
Other PC faults ..............................................................................................
15
2.5
No monitor display ........................................................................................
17
2.6 2.6
Inco Incorr rrec ectt moni monito torr dis displ pla ay form format at s siz ize e ............................................................
18
2.7
Monit Monitor: or: Color Color dep depth/ th/nu numbe mberr of of gray graysca scales les is in insuf suffic ficie ient nt............................. .............................
18
2.8
Track rackba ball ll not not fun functi ctioni oning ...............................................................................
20
2.9 2.9
Tr Trac ackb kbal alll b but utto tons ns not not fun funct ctio ioni ning ng ..................................................................
22
2. 2.10 10
Foot Footsw swit itch ch not not fun funct ctio ioni ning ng............................................................................. .............................................................................
23
2.11 2.1 1
Keybo Keyboard ard no nott fun functi ction oning ing /defec /defectiv tive e ..............................................................
24
2. 2.12 12
No came camera ra imag image e (Blu (Bluec ecam am)) ........................................................................
25
2. 2.13 13
No came camera ra imag image e (Omn (Omnic icam am)) .......................................................................
26
2.14 2.1 4
Incorr Incorrect ectly ly adjust adjusted ed optica opticall impress impressio ion n (Blueca (Bluecam) m)........................................ ........................................
28
2.15
Error Error messa messages ges during during camera camera cali calibrati bration on (Bluecam (Bluecam)) ..................................
29
2.16
Error Error messa messages ges during during camera camera calib calibrati ration on (Omnicam (Omnicam)) .................................
30
2. 2.17 17
LA LAN N com commu muni nica cati tion on pr prob oble lems ms ......................................................................
32
2. 2.18 18
WLAN WLAN comm commun unic icat atio ion n prob proble lems ms................................................................... ...................................................................
34
2. 2.19 19
WLAN WLAN occ occas asio iona nalllly y inter interru rupt pted ed .....................................................................
35
Settings ....................................................................................................................
36
3.1
Chan Changin ging g from from rightright-han hande ded d to lef left-h t-hand anded ed op opera eratio tion n ..................................
36
Repair ....................................................................................................................... Repair .......................................................................................................................
38
4.1 4.1
Gene Genera rall in info form rmat atio ion n on asse assemb mbly ly .................................................................
38
4.2
Covers ...........................................................................................................
39
4.2.1 Removing 4.2.1 Removing and inserting inserting the back panel panel ............................................. 4.2.2 4.2. 2 Removing Removing and inserting inserting the front front panel panel .............................................
39 40
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Service Manual CEREC AC
4.2.3 4.2 .3 Repla Replacin cing g the the camer camera a holde holder r ............................................................ ............................................................
41
4.2.4 4.2 .4 Repla Replacin cing g the the uppe upperr side side cove cover r ......................................................... .........................................................
42
El Elec ectr tric ical al and and ele elect ctro rome mech chan anic ical al comp compon onen ents ts .............................................
43
4.3.1 Monitor .............................................................................................. r ..............................................................................................
43
4.3.1.1 4.3. 1.1 Replacin Replacing g the the LCD LCD monitor monitor ............................................................. .............................................................
43
4.3.1.2 4.3. 1.2 Replacin Replacing g the the tilt tilt joint joint ......................................................................
44
4.3.1.3 4.3. 1.3 Replacin Replacing g the the DVI DVI cable cable.................................................................. ..................................................................
48
4.3.1.4 4.3. 1.4 Replacin Replacing g the monito monitorr support support ........................................................
51
4.3.2 4.3 .2 PC of the acquis acquisiti ition on unit unit ..................................................................
55
4.3.2.1 4.3. 2.1 Removing Removing and inser inserting ting the the PC....................................................... PC.......................................................
55
4.3.2.2 4.3. 2.2 Replacin Replacing g the the hard hard drive drive .................................................................
57
4. 4.3. 3.2. 2.3 3 Boar Boards ds............................................................................................. .............................................................................................
57
4.3.2.4 4.3. 2.4 Replacin Replacing g the loudspea loudspeakers kers............................................................ ............................................................
59
4.3.2.5 4.3. 2.5 Replacin Replacing g fans (CEREC (CEREC AC with with Bluecam) Bluecam) ....................................
60
4.3.2.6 4.3. 2.6 Replacin Replacing g fans (CEREC (CEREC AC with with Omnicam) Omnicam)................................... ...................................
61
4.3.2.7 4.3. 2.7 Replacin Replacing g the power power supply supply unit unit ..................................................... 4.3. 4.3.3 3 Cont Contro roll unit unit........................................................................................ ........................................................................................
62 65
4.3.3.1 4.3. 3.1 Removing Removing and and inserting inserting the contro controll unit.......................................... unit ..........................................
65
4.3.3.2 4.3. 3.2 Replacin Replacing g the trackbal trackballl button board board............................................... ...............................................
66
4.3.3.3 4.3. 3.3 Replacin Replacing g the the keyboard keyboard................................................................... ...................................................................
67
4.3.3.4 4.3. 3.4 Replacin Replacing g the optical optical trackba trackballll......................................................... .........................................................
68
4. 4.3. 3.4 4 Repl Replac acin ing g the the DVD DVD driv drive e ...................................................................
69
4.3.5 Fuses ................................................................................................
70
4.3.5.1 4.3. 5.1 Replacin Replacing g the the main main fuse fuse.................................................................. ..................................................................
70
4.3.5. 4.3 .5.2 2 Replac Replacing ing fuse fuse F3 F3 ...........................................................................
71
4. 4.3. 3.6 6 Repl Replac acin ing g the the batt batter ery y ........................................................................
71
4.3.7 4.3 .7 Repla Replacin cing g the isolat isolating ing trans transfor former mer .................................................... ..................................................
72
Mechanical c co omponents............................................................................... ts...............................................................................
74
4.4.1 4.4 .1 Repla Replacin cing g the air fil filter ter ....................................................................... .......................................................................
74
4.4.2 4.4 .2 Repla Replacin cing g the foot foot ped pedal al ...................................................................
74
4.4.3 4.4 .3 Repla Replacin cing g the footsw footswitc itch h ...................................................................
75
4.4.4 4.4 .4 Repla Replacin cing g the fla flap p for for the DVD DVD driv drive e .................................................
76
4. 4.4. 4.5 5 Repl Replac acin ing g the the hand handle le ........................................................................
77
Circuit diagrams....................................................................................................... diagrams.......................................................................................................
79
5.1
CEREC AC AC wi with Bl Bluecam ............................................................................
80
5.2
CEREC AC AC wi with Om Omnicam ...........................................................................
81
4. 4.3 3
4.4
5
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Service Manual CEREC AC
6
4
Re-test...................................................................................................................... Re-test ......................................................................................................................
82
6.1 6.1
When When is th the e re re-t -tes estt c car arri ried ed out? out? ....................................................................
82
6.2
Descri scrip pti tio on of devi vice ce typ type .............................................................................
82
6. 6.3 3
To be carr carrie ied d out out on comp comple leti tion on of th the e ttes estt ...................................................
82
6.4
What the the test test ste steps in inv vol olve ve ...........................................................................
82
6. 6.4. 4.1 1 Vi Visu sual al in insp spec ecti tion on ................................................................................
82
6.4.2 6.4 .2 Protec Protectiv tive e ground ground wire wire resis resistan tance ce...................................................... ......................................................
82
6.4.3 6.4 .3 Device Device le leaka akage ge curren currentt ......................................................................
83
6. 6.4. 4.4 4 Insu Insula lati tion on resi resist stan ance ce ..........................................................................
83
6.4 .4.5 .5 Func Functi tion onal al tes testt ....................................................................................
83
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1 General information
Service Manual CEREC AC
1.1 General information
1
General information Generalinformation
1.1 General information Generalinformation
Nominal line voltage ranges (CEREC (CER EC Blu Blueca ecam) m)
Nominal line voltage ranges (CEREC (CER EC Omni Omnicam cam))
The acquisition unit works in the following ranges: Rated line voltage for Europe Rated current for Europe
230 VAC / 50Hz 1.5 A
Rated line voltage for the USA
115VAC / 60Hz
Rated current for the USA
2,7 A
Rated line voltage for Japan
100VAC / 50Hz and 60Hz
Rated current for Japan
3,0 A
The acquisition unit works in the following ranges: Rated line voltage
100-240 VAC / 50-60Hz
Rated current
4.7-1.8 A
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Wireless phone interference with medical electrical equipment:
NOTICE
To ensure safe operation of medical electrical equipment, the use of mobile wireless phones in practice or hospital environments is prohibited. ESDwarninglabel
ESD warning label
CAUTION Connector pins or sockets bearing ESD warning labels must not be touched or interconnected without ESD protective measures. ESDprotectivemeasures
ESD protective measures
ESD protective measures include:
Replacing parts
●
Proce Procedures dures for p prevent reventing ing electros electrostatic tatic charge build-up build-up (e. (e.g. g. air conditioning, air moistening, conductive floor coverings and nonsynthetic clothing)
●
Disch Discharging arging the el electros ectrostatic tatic charges charges of your your own own body on the frame of the UNIT, the protective ground wire or large metallic objects
●
Con Connec nectin ting g yoursel yourselff to ground ground using using a wris wristt band band..
WARNING Potentially lethal shock hazard when working near the power supply unit
Disconnect from the line power supply. Check for zero potential. Switch the unit off and disconnect the power plug before replacing parts. The item numbers for ordering spare parts can be found in the spare parts list.
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1 General information
Sirona Dental Systems GmbH
1.2 Additional information
Service Manual CEREC AC
The diagrams contained in the spare parts list provide a useful guide when replacing parts. Before replacing the boards, observe the ESD protective measures. Disposal
Observe the information on disposal in the relevant operating instructions.
Installation site
Observe the information on the installation site in the relevant operating instructions.
1.2 Additional information Additionalinformation
In addition, you also require: CEREC AC spare parts list Order No.: „62 31 786“ CEREC AC Wiring Diagrams Order No.: „62 33 162“ CEREC AC Operating Instructions with Bluecam Order No.: „62 31 174“ CEREC AC Operating Instructions with Omnicam Order No.: „62 81 136“ Documents: Operating the MC XL via LAN (61 90 503) Operating MC XL via WLAN in infrastructure mode, Restoring default settings (61 90 560) Tools ●
TOR TORX X screw screwdri driver ver,, si size ze 6; 6; 8; 10; 10; 20; 20; 3 30 0
●
Ph Philillilips ps s scr crew ewdr driv iver er,, size size 1
●
Bla Blade de screw screwdri driver ver,, insula insulated ted,, sizes sizes 2 and and 3
●
Unive nivers rsal al p pli lier ers s
●
Flat pliers
Auxiliary tools
6
equipment
●
Dig Digita itall Multi Multime meter ter,, Ac Accur curacy acy Class Class 1
●
Sol Solder dering ing tool tool fo forr re repai pairin ring g cable cables s
●
Si Side de cutt cuttin ing gp pli lier ers s
●
Cable ties
●
Teflon tape
●
Fu Fuse ses s (re (reco comm mmen ende ded) d)::
F1/F2 (2 pcs)
T8A H 250V
Order No.: 62 33 188
F3
T2,5A L 250V
Order No.: 46 57 656 62 34 269 D3492 D3492.076.01.03.02 07.2012
Sirona Dental Systems GmbH
2 Troubleshooting
Service Manual CEREC AC
2
Troubleshooting Switchingthe unitoff Troubleshooting
NOTICE Switching the unit off
Always switch the unit off before connecting connecting a measuring instrument instrument or replacing parts.
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Sirona Dental Systems GmbH
2.1 System cannot be switched on
Service Manual CEREC AC
2.1 System cannot be switched on System cannot be switched on
See next page.
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2 Troubleshooting 2.1 System cannot be switched on
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2.1 System cannot be switched on
Service Manual CEREC AC
A B
A
Ready LED
B
0 3 2
ON button
A
5 1 1
B
C D
A
Voltage selection insert (only with CEREC CER EC Bluec Bluecam) am)
C
Fuse module
B
Main fuse
D
Window
B
Fuse
Only with CEREC Bluecam
A
A
10
Fuse holder
B
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2 Troubleshooting
Service Manual CEREC AC
2.2 PC not booting correctly
2.2 PC not booting correctly PC not bootingcorrectly
A
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B
A
DVI cable connected to monitor
B
DVI ca cabl ble e conn connec ecte ted d to PC
Introductorysentence
To start, check the following:
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Are th the e keyboard, keyboard, tr trackbal ackballl and DVI DVI cable cable connected connected to to the m monitor onitor on the PC slide-in module?
●
Is tthe he L LED ED abov above e th the e ON butt button on yellow or green? See also System cannot can not be swi switch tched ed on [ → 8].
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2 Troubleshooting
Sirona Dental Systems GmbH
2.2 PC not booting correctly
Service Manual CEREC AC
List of beep-tone error codes Beep tone sequence
Cause of error
permanent
The graphic card is defective or has no power supply Error messages during boot-up and possible causes of errors:
Beep tone sequence
Cause of error
Disk Boot Boot Failure, Failure, insert System System Disk and press press Enter.
If the p prima rimary ry master master disk disk was not fou found: nd: Check Check the the data cable and voltage supply of the hard disk and the CD/ DVD drive.
Press a key to reboot.
Boot sector of hard disk cannot be found. Boot with Restore CD. If this fails, replace the PC.
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Sirona Dental Systems GmbH Service Manual CEREC AC
2 Troubleshooting 2.2 PC not booting correctly
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2.3 PC does not respond when switched on, PC power supply does not start
Service Manual CEREC AC
2.3 PC does not respond when switched on, PC power supply does not start PC does not respondwhenswitched on, PC power supply does not start
See next page.
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2 Troubleshooting
Service Manual CEREC AC
2.4 Other PC faults
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2.4 Other PC faults Other PC faults
Case of defect/fault
How to detect / action to take
COM CO M port port no nott fu func ncti tion onin ing g
Try Try repl replac acin ing g the the wi wire rele less ss in inte terf rfac ace e with with a ca cabl ble e co conn nnec ecti tion on.. If this fails, check whether the COM port is enabled in the BIOS. If it is, replace the PC.
No mouse pointer displayed on screen
Trackball defective or not connected.
No ke keyb yboa oard rd inpu inputt pos possi sibl ble e
Keyb Keyboa oard rd (k (key eybo boar ard dc con ontr trol olle ler) r) de defe fect ctiv ive eo orr imp impro rope perl rly yc con onne nect cted ed.. Check to make sure this fault is not due to bent plug contacts.
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2 Troubleshooting
Sirona Dental Systems GmbH
2.4 Other PC faults
Service Manual CEREC AC
Case of defect/fault
How to detect / action to take
Ne Netwo twork rk cann cannot ot b be e acces accessed sed
The upp upper er LED at the the n netw etwork ork con connec nectio tion n must must be perm permane anentl ntly y lit lit gr green een.. If not not:: ●
The ne network twork cable betwee between n the networ network k card and and the hub hub / switch switch is defective.
●
Hub / switc switch h defective defective (c (check heck whether whether other PCs PCs connected connected to hub / switch switch can access the network).
The "TX Data Act" LED flashes during data communication via the network. CD-ROM / DVD-ROM missing in list of system drives (Explorer)
Data cable and/or voltage supply disconnected and/or defective.
No au audio playback
Only a musical CD or only a wave file cannot be played back:
16
If this is the case, the drive is defective. Test via BIOS: It must be possible to select the drive. ●
Ch Chec eck k the the soft softwa ware re s set etti ting ngs s
●
Wro Wrong ng sou sound nd car card dd driv river er instal installed led..
●
Cable betw between een CD CD-ROM -ROM / DVD DVD-ROM -ROM drive and sou sound nd card is loose loose or defective.
●
Def Defect ective ive CD-RO CD-ROM M/D DVD VD-RO -ROM M dr drive ive
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2 Troubleshooting
Service Manual CEREC AC
2.5 No monitor display
2.5 No monitor display Nomonitor display
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Sirona Dental Systems GmbH
2.6 Incorrect monitor display format size
Service Manual CEREC AC
A
DVI cable connected to monitor
B
Power supply cable connected to monitor
C
Supply board (VP)
2.6 Incorrect monitor display format size Introductory sentence Incorrectmonitor display format size
To start, check the following: ●
The s screen creen resol resolution ution is not not set higher than 1280 x 1024. 1024. Check this setting by clicking the desktop with the right trackball button and select "Personalize" / / "Display Settings" / / "Monitor" .
2.7 Monitor: Color depth/number of grayscales is insufficient Introductory sentence Monitor: Color depth/number ofgrayscales is insufficient
To start, check the following: ●
The color color d dept epth h se setti tting ng m must ust be 32 32 bit. bit. Check the settings by clicking the desktop with the right trackball button and selecting "Personalize" /"Display Settings" /"Monitor" .
●
Set tthe he monitor monitor brightness brightness to 50% and the the contrast contrast to to 60%. 60%.
Setting the contrast
18
1.
Click monitor key M once.
2.
Change the contrast settings with the arrow keys.
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2 Troubleshooting
Service Manual CEREC AC
2.7 Monitor: Color depth/number of grayscales is insufficient
Setting the brightness 1.
Click monitor key M once.
2.
Click monitor key S once.
3.
Change the brightness setting with the arrow keys.
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Sirona Dental Systems GmbH
2.8 Trackball not functioning
Service Manual CEREC AC
2.8 Trackball not functioning Trackballnot functioning
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2 Troubleshooting
Service Manual CEREC AC
2.8 Trackball not functioning
B C
A
D
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A
Trackball connection cable
C
Trackball
B
Three nuts
D
Three attachment screws
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2 Troubleshooting
Sirona Dental Systems GmbH
2.9 Trackball buttons not functioning
Service Manual CEREC AC
2.9 Trackball buttons not functioning Trackballbuttons notfunctioning
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2 Troubleshooting
Service Manual CEREC AC
2.10 Footswitch not functioning
A
A
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Three attachment screws
2.10 Footswitch not functioning Introductory sentence Footswitch notfunctioning
To start, check the following:
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See Section "Switching from right-hand to left-hand oper operat atio ion n [ → 36 36]]".
●
Is the ffoot ootswi switch tch conne connecto ctorr L10 pr prope operly rly plugg plugged ed in?
●
Is th the e foo footsw tswitc itch h me mecha chanic nicall ally y obs obstru tructe cted? d?
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2 Troubleshooting
Sirona Dental Systems GmbH
2.11 Keyboard not functioning /defective
Service Manual CEREC AC
2.11 Keyboard not functioning /defective Keyboard notfunctioning /defective
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2 Troubleshooting
Service Manual CEREC AC
2.12 No camera image (Bluecam)
2.12 No camera image (Bluecam) Introductory sentence Nocamera image (Bluecam)
To start, check the following: ●
In the the D Dev evic ice e Man Manag ager er ("Start" / / "Control panel" / / "Hardware and Sound" / / "Device Manager" ), ), is the Bluecam listed as an image processing device? If yes, update the driver software.
●
Is the camer camera a cable cable prop properly erly connect connected ed to the the camera camera and and the supply supply board (VP) in the PC slide-in module?
●
Check the connecti connection on cable cable between between the supply supply board (VP) and th the e mainboard (motherboard).
●
Does a CE CEREC REC 3D error error message message appear when the camera camera is supposed to be activated? If yes, load new software. If no camera image appears, replace the frame grabber card.
NOTICE If you receive the message "Unknown USB device" after after connecting the camera, reboot the computer.
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2 Troubleshooting
Sirona Dental Systems GmbH
2.13 No camera image (Omnicam)
Service Manual CEREC AC
2.13 No camera image (Omnicam) Introductory sentence No cameraimage(Omnicam)
To start, check the following:
26
●
In the the D Dev evic ice e Man Manag ager er ("Start" / / "Control panel" / / "Hardware and Sound" / / "Device Manager" ), ), is the Omnicam listed as an image processing device? If yes, update the driver software.
●
Is the camer camera a cable cable properly properly connec connected ted to the second second cable cable on on the CEREC AC via the circular connector (LEMO connector)?
●
Is the second CER CEREC EC AC AC cab cable le properly properly connec connected ted to the supply supply board (VP) in the PC slide-in module?
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2 Troubleshooting
Service Manual CEREC AC
2.13 No camera image (Omnicam)
●
Check the connecti connection on cable cable between between the supply supply board (VP) and th the e mainboard (motherboard).
●
Does a CE CEREC REC 3D error error message message appear when the camera camera is supposed to be activated? If yes, load new software. If no camera image appears, replace the frame grabber card.
NOTICE If you receive the message "Unknown USB device" after after connecting the camera, reboot the computer.
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2.14 Incorrectly adjusted optical impression (Bluecam)
Service Manual CEREC AC
Disconnectingthe cameracable
Disconnecting the camera cable from the Omnicam The Omnicam camera cable has two parts. The first camera cable is attached to the Omnicam and with it forms a unit. In the event of a claim, the customer sends the Omnicam and the cable as a unit to Sirona customer support. 1.
Disconnect the slotted round nut with the extraction tool. Guide the extraction tool over the cable.
2.
Unscrew the 2-way screwed connection of the cable grip cover with a TORX screwdriver (08x60).
3.
The camera housing and the adapter ring are released. The cable grip cover is exposed.
The stainless steel sleeve and the connector are easily accessible.
Pull the connector out of the Omnicam and disconnect it.
The cable is unplugged from the Omnicam.
To re-establish the connection between the Omnicam and the cable, carry out the steps listed above in reverse order. Ensure that the stainless steel sleeve and the anti-kink sleeve applies for the camera injection mold.fit together well and that the same
2.14 Incorrectly adjusted optical impression (Bluecam) Incorrectly adjusted optical impression (Bluecam)
Check whether the lifting magnet in the 3D camera is briefly activated during the measuring phase. A clicking sound should be heard.
NOTICE Shaking during optical impression
Badly adjusted optical impressions may be due to shaking of the camera. The stored optical impression may be OK despite shaking of the camera.
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2 Troubleshooting
Service Manual CEREC AC
2.15 Error messages during camera calibration (Bluecam)
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2.15 Error messages during camera calibration (Bluecam) Error messages during camera calibration(Bluecam)
There are two classes of error messages which can occur during camera calibration: ●
Class 1 are warning warnings s which which should should be treated treated seriously. seriously. ItIt is po possible ssible to temporarily accept these errors by selecting "OK" and and then continue with the calibration process.
●
Class 3 are e errors rrors w which hich force force the the calibration calibration proces process s to stop stop without without the calibration data being saved.
The texts of the error messages give instructions on what to do. Observe the following: ●
Pre Prepar pare e the the ca calib librat ration ion set proper properly. ly.
●
Sli Slide de the the c cali alibra bratio tion n set set up to the the stop stop..
●
Ensur Ensure e that tthe he cam camera era is kept kept cle clean an (see acquisition acquisition unit op operatin erating g instructions and Bluecam calibration instructions).
If the message "Image size too small" is displayed, try to reposition the prism tube in relation to the camera in order to avoid any possible image loss. 62 34 269 D3492 D3492.076.01.03.02
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2.16 Error messages during camera calibration (Omnicam)
Service Manual CEREC AC
2.16 Error messages during camera calibration (Omnicam) Error messagesduringcameracalibration (Omnicam)
When calibrating the Omnicam, follow the instructions in the CEREC AC Operating Instructions. This also includes the error messages. Ensure that the protective cover is replaced after using the calibration set so as to prevent the camera from being contaminated. If a calibration is repeatedly unsuccessful, replace the calibration set.
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2 Troubleshooting 2.16 Error messages during camera calibration (Omnicam)
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2.17 LAN communication problems
Service Manual CEREC AC
2.17 LAN communication problems LAN communicationproblems
See next page.
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2 Troubleshooting 2.17 LAN communication problems
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2.18 WLAN communication problems
Service Manual CEREC AC
2.18 WLAN communication problems WLANcommunication problems
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2 Troubleshooting
Service Manual CEREC AC
2.19 WLAN occasionally interrupted
2.19 WLAN occasionally interrupted WLAN occasionally interrupted
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3 Settings
Sirona Dental Systems GmbH
3.1 Changing from right-handed to left-handed operation
3
Service Manual CEREC AC
Settings Settings
3.1 Changing from right-handed to left-handed operation Changing from right-handed to left-handed operation
In the factory default setting, the left button trackball button corresponds to a foot control entry. If you would like to change this assignment to the right trackball button (e.g..: for left-handed people), perform the following steps.
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3 Settings
Service Manual CEREC AC
3.1 Changing from right-handed to left-handed operation
1.
Open the upper cover on the rear side.
NOTICE Opening the latch
Use a coin to open the latch. Turn counterclockwise. 2.
Pull the plug out of socket A (X7) and plug it into the free socket B (X5).
3.
Close the cover.
The software changeover from right-handed to left-handed operation is described in the Windows help function (F1, mouse buttons, swap).
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4.1 General information on assembly
Service Manual CEREC AC
4
Repair Repair
4.1 General information on assembly Turning theunit. onassembly General off information
DANGER Potentially lethal shock hazard
People can be injured or electrical components of the unit destroyed. ➢ Switch off the unit prior to beginning work. ➢ Pull out the power cable. Useof accessories
NOTICE Accessories
For reasons of product safety, this product may be operated only with original Sirona accessories or third-party accessories expressly approved by Sirona. The user is responsible for any damage resulting from the use of non-approved accessories. Order oftighteningscrews
NOTICE
Observe the order of tightening screws here.
Always start in the front at the handle and then tighten the screws towards the back or bottom.
General information oncable breakage
NOTICE If cable is kinked or twisted.
Kinking or twisting can cause the wires in the cable to break. The cable must be replaced. ➢ Ensure that electrical lines do not become kinked or twisted.
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4 Repair
Service Manual CEREC AC
4.2 Covers
4.2 Covers Covers
4.2.1
Removing and inserting the back panel Order Number Removing andinserting theback panel
Installation kit
Order no.
Bluecam back panel
62 36 215
Omnicam back panel
63 99 328
Removing covers
Removal
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B
A C
A
A 1.
B1
C B2
Open the doors A on the back panel.
NOTICE Open with coin.
Use a coin to open the latch. Turn counterclockwise.
62 34 269 D3492
2.
Remove the battery (if present).
3.
Remove the three screw caps (C) from the back panel.
4.
Remove the six screws (B) from the back panel.
5.
Pull the back panel off of the unit.
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4.2 Covers
Service Manual CEREC AC
Installingthe covers
Installation
NOTICE Different screw lengths.
Please note that the longer screws B1 and B2 are intended for use on the lower part of the back panel. See the illustration for the precise order. 1. Fasten the back panel to the acquisition unit with the six screws(B). Pay attention to the order of the screws.
4.2.2
2.
Insert the three screw caps (C) onto the back panel shown.
3.
Insert the battery (if present).
4.
Close the doors (A) on the back panel.
Removing and inserting the front panel Order Number insertingthe front panel Removingand
Installation kit
Order No.
Front panel, compl.
62 35 969
Removingcovers
Removal
✔ The back panel is fully removed, see Removing and inserting the back back pa pane nell [ → 39 39]].
1. 2.
Flip the footswitch down. Loosen the screws of the cover (B) and the camera cable fastener (C). 62 34 269 D3492
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Service Manual CEREC AC
4.2 Covers
3.
Remove the three screws (A) on each side.
4.
Pull the front panel forwards and remove the cover.
Installing thecovers
Installation
4.2.3
1.
Slide the front panel onto the acquisition unit.
2.
Position the cover (B) and the camera cable fastener (C) and fasten
3.
each of them with a screw. Fasten the front panel with three screws (A) on each side of the acquisition unit.
4.
Flip the footswitch up.
Replacing the camera holder Replacing thecamera holder
Installation kit
Order no.
Right camera holder, compl.
62 36 280
✔ The back panel is fully removed, see Removing and inserting the back back pa pane nell [ → 39 39]].
✔ The front panel is fully removed, seeRemoving seeRemoving and inserting the front panel [ → 40].
62 34 269 D3492
1.
1. Unscrew the camera from the camera cable (or disconnect the camera cable on the CEREC Omnicam from the CEREC AC cable) and remove the camera.
2.
Pull the cable (A) of the heater off of the board (X3).
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4.2 Covers
Service Manual CEREC AC
NOTICE Pay attention to the screw threads when removing and re-inserting the screws. The middle screw (B2) is an M4x10 machine screw; the other two screws (B1) are self-tapping screws.
4.2.4
3.
Remove the three screws (B) of the camera holder. Be careful not to
4.
lose the washer of the middle screw. Remove the camera holder from the device sideways.
5.
Hold the new camera holder against the stop at the front and twist in the rear half until the camera holder is seated flush. The camera cable has to be inserted through the opening intended for this purpose.
6.
Fasten the camera holder securely by tightening the three screws(B). Use the washer for the middle screw (B2).
Replacing the upper side cover Replacingthe upper side cover
Installation kit
Order no.
Left upper side cover
62 36 272
The back panel is fully removed, see Removing and inserting the ✔ back back pa pane nell [ → 39 39]]. ✔ The front panel is fully removed, seeRemoving seeRemoving and inserting the front panel [ → 40].
NOTICE Pay attention to the screw threads when removing and re-inserting the screws. The middle screw (B2) is an M4x10 machine screw; the other two screws (B1) are self-tapping screws. 62 34 269 D3492
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Service Manual CEREC AC
4.3 Electrical and electromechanical components
1.
Remove the three screws (B) of the upper side cover. Be careful not to lose the washer of the middle screw.
2.
Remove the upper side cover from the unit sideways.
3.
Hold the new upper side cover against the stop at the front and twist in the rear half in until the upper side cover is flush.
4. Attach the upper side cover using three screws(B). Use the washer
for the middle screw (B2).
4.3 Electrical and electromechanical components Electricaland electromechanicalcomponents
4.3.1
Monitor Monitor
4.3.1.1
Replacing the LCD monitor Replacing theLCD monitor
Installation kit
Order No.
LCD monitor
62 35 951
NOTICE Risk of damage to the display caused by mechanical impact. ➢ Do NOT subject active display area to any mechanical pressure. ➢ NEVER touch active display area with sharp or pointed objects. Removingthemonitor
Removing the monitor
PZ 1 D
C C
A
B
B
1.
Tilt the tilt joint back.
2.
Remove the DVI plug (A) and the voltage supply plug from the monitor.
3.
Open the screw cover if needed with a flat-head screwdriver. Hold the monitor and remove the lower screws first(B), then remove the two upper screws (C). Make sure that the covers (D) don't fall
4.
62 34 269 D3492
D
down. Remove the screws (B) and (C) along with the screw covers and the housing covers (D).
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
5.
Remove the monitor from the tilt joint.
Installingthe monitor withoutthe tiltjoint
Mounting the monitor
PZ 1 A
B
C
1.
A
Place the new monitor on the tilt joint and temporarily tighten the top
left screw (B) fully to secure it. 2. Place the right cover (A) on and tighten the monitor with 2 screws and screw covers.
4.3.1.2
3.
Remove the screw (B), attach the left cover (A) and fasten the monitor with 2 screws and screw covers.
4.
Close the screw covers.
5.
Plug in the DVI plug (C) and screw it tight.
6.
Connect the power supply plug.
Replacing the tilt joint Replacingthe tiltjoint
Installation kit
Order No.
Monitor tilt joint replacement
62 35 894
NOTICE Risk of damage to the display caused by mechanical impact. ➢ Do NOT subject active display area to any mechanical pressure. ➢ NEVER touch active display area with sharp or pointed objects.
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Service Manual CEREC AC
4.3 Electrical and electromechanical components
Removingthemonitor
Removing the monitor
PZ 1 D
C C
A
B
B
1.
Tilt the tilt joint back.
2.
Remove the DVI plug (A) and the voltage supply plug from the
3.
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D
monitor. Open the screw cover if needed with a flat-head screwdriver. Hold the monitor and remove the lower screws first(B), then remove the two upper screws (C). Make sure that the covers (D) don't fall down.
4.
Remove the screws (B) and (C) along with the screw covers and the housing covers (D).
5.
Remove the monitor from the tilt joint.
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Removingthe tiltjoint
Removing the tilt joint
A
1.
Loosen the screw (A) of the back cover from the front.
2.
Lift off the back cover and remove it. B
D
B
C
3.
Remove the screws (B) of the front cover.
4.
Remove the cable tie (C). 62 34 269 D3492
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Service Manual CEREC AC
4.3 Electrical and electromechanical components
5.
Remove cover by pulling it down diagonally.
6.
Remove the four screws (D) and take off the tilt joint.
Attachingthe cover with thetiltjoint
Attaching the covers
B
A
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B
1.
Fasten the tilt joint to the monitor support with four screws (A).
2.
Place the front cover on the monitor support and fasten it with four screws (B) (PT screws F4x22).
3.
Place the back cover on the monitor support and fasten it with one screw.
Installing themonitor withoutthe tilt joint
Mounting the monitor
PZ 1 A
B
C
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A
1.
Place the new monitor on the tilt joint and temporarily tighten the top left screw (B) fully to secure it.
2.
Place the right cover (A) on and tighten the monitor with 2 screws and screw covers.
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4.3 Electrical and electromechanical components
4.3.1.3
Service Manual CEREC AC
3.
Remove the screw (B), attach the left cover (A) and fasten the monitor with 2 screws and screw covers.
4.
Close the screw covers.
5.
Plug in the DVI plug (C) and screw it tight.
6.
Connect the power supply plug.
Replacing the DVI cable Replacingthe DVI cable
Installation kit
Order No.
Monitor DVI cable (L7)
62 35 951
Removing the DVI cable
A
1.
Loosen the screw (A) of the back cover from the front.
2.
Lift off the back cover and remove it.
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Service Manual CEREC AC
4.3 Electrical and electromechanical components
B
B C
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3.
Remove the four screws (B) of the front cover.
4.
Remove cover by pulling it down diagonally.
5.
Remove the cable tie (C).
6.
Remove the DVI cable from the cable duct.
7. 8.
Remove the DVI cable plug from the monitor and from the PC. Carefully pull the DVI cable out of the device.
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Inserting the DVI cable 1.
Place the new DVI cable in the acquisition unit and connect the cable with the PC and the monitor.
2.
Lay the new DVI cable in the cable duct as shown above.
B
B C 3.
Fasten the cables to the monitor support with a cable tie (C).
4.
Place the front cover on the monitor support.
5.
Secure the cover with the screws (B).
6.
Place the back cover on the monitor support.
A
7.
Secure the cover with the screw (A). 62 34 269 D3492
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4.3 Electrical and electromechanical components
4.3.1.4
Replacing the monitor support Replacing themonitor support
Installation kit
Order No.
Monitor support
62 35 886
Removingthemonitor
Removing the monitor
PZ 1 D
C C
A
B
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D
B
1.
Tilt the tilt joint back.
2.
Remove the DVI plug (A) and the voltage supply plug from the monitor.
3.
Open the screw cover if needed with a flat-head screwdriver. Hold the monitor and remove the lower screws first(B), then remove the two upper screws (C). Make sure that the covers (D) don't fall down.
4.
Remove the screws (B) and (C) along with the screw covers and the housing covers (D).
5.
Remove the monitor from the tilt joint.
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Removingthe tiltjoint
Removing the tilt joint
A
1.
Loosen the screw (A) of the back cover from the front.
2.
Lift off the back cover and remove it. B
D
B
C
3.
Remove the screws (B) of the front cover.
4.
Remove the cable tie (C).
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4.3 Electrical and electromechanical components
5.
Remove cover by pulling it down diagonally.
6.
Remove the four screws (D) and take off the tilt joint.
Removing the monitor support
B
A
1.
Remove the screw (A) and detach the ground wire.
2. 3.
Remove the screw (B) of the monitor support. Pull the monitor support up. Do not damage the cable in the process.
Installing the monitor support
B
A
C
1.
Place the monitor support on the intended fitting on the acquisition unit.
2.
Secure the monitor support with the screw (A).
3.
Fasten the ground wire (B) to the acquisition unit with a screw and washer. Make sure that the ground wire is lying right on the acquisition unit.
4.
Position the cable for the USB connection and fasten it to the monitor support using two screws.
5.
Connect the cables to the monitor support with a cable tie(C).
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Attaching thecover withthe tilt joint
Attaching the covers
B
A
B
1.
Fasten the tilt joint to the monitor support with four screws (A).
2.
Place the front cover on the monitor support and fasten it with four screws (B) (PT screws F4x22).
3.
Place the back cover on the monitor support and fasten it with one screw.
Installingthe monitor withoutthe tiltjoint
Mounting the monitor
PZ 1 A
B
C
1. 2.
A
Place the new monitor on the tilt joint and temporarily tighten the top left screw (B) fully to secure it.
Place the right cover (A) on and tighten the monitor with 2 screws and screw covers. 3. Remove the screw (B), attach the left cover (A) and fasten the monitor with 2 screws and screw covers.
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4.3 Electrical and electromechanical components
4.3.2
4.
Close the screw covers.
5.
Plug in the DVI plug (C) and screw it tight.
6.
Connect the power supply plug.
PC of the acquisition unit PC ofthe acquisitionunit
A
D E F G B
H I J
K C
PC slot assignment
4.3.2.1
A
Loudspeakers
G
Free slot; FireWire
B
Fan
H
Free slot
C
Power supply unit
I
Graphic card slot
D
SATA connection (DVD)
J
USB ports
E
WLAN card slot
K
Hard disk
F
Supply board (VP) slot
Removing and inserting the PC Noteonthe sparepartslist Removing andinserting thePC
NOTICE Order no. in the spare parts list
You will find the order number of the corresponding spare part in the CEREC AC spare parts list.
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Removal
✔ The back panel is removed, see Removing and inserting the back panel [ → 39].
B B C
A
A
1.
Remove all cables from the PC.
2.
Remove the two screws (A).
3.
Remove the four screws (B) and remove them together with the securing plate (C). Be careful not to lose the washers.
4.
Pull the PC up to the safety stop and raise it slightly to remove it from
5.
the housing. Place it down on one side.
Opening the PC 1.
Remove the three screws for the side cover.
2.
Pull the cover towards the front and lift it out to one side.
Closing the PC 1.
Place the cover on the PC and push the cover towards the rear until the PC is closed.
2.
Secure the cover with three screws.
Installation 1.
Hang the PC in the track intended for this purpose.
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4.3 Electrical and electromechanical components
NOTICE Cables can be damaged.
Pay attention to the cables when inserting and moving the PC. Never kink the cables. 2.
Push the PC completely into the acquisition unit.
3.
Fasten the PC to the acquisition unit with both screws (A).
4.
Secure the safety plate (C) with the four screws (B).
5. Attach all cables to the PC.
4.3.2.2
Replacing the hard drive Noteonthe sparepartslist Replacing thehard drive
NOTICE Order no. in the spare parts list
You will find the order number of the corresponding spare part in the CEREC AC spare parts list. Noteonthe overview illustration
NOTICE Position in the PC See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55].
✔ The PC is removed and opened, seeRemoving see Removing and installing the PC [ → 55].
4.3.2.3
1.
Remove all cables from the hard drive.
2.
Hold the hard drive with a hard drive holder and remove the four screws for the hard drive holder.
3.
Remove the hard drive holder.
4.
Remove the four screws and any hard drive spacers.
5.
Place the new hard drive into the hard drive holder.
6.
Tighten the screws for the hard drive and use spacers if necessary.
7. 8.
Place the hard drive holder in the PC, but don't lay it down. Fasten the hard drive holder to the PC with the four screws.
9.
Reconnect the cables to the hard drive.
Boards Boards
4.3.2.3.1
Replacing the WLAN card Replacing theWLAN card
Installation kit
Order No.
HQ WLAN card
62 36 371
Noteonthe overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55].
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
✔ The PC is removed and opened, seeRemoving see Removing and installing the PC [ → 55].
4.3.2.3.2
1.
Remove the screw from the PCI slot plate and pull the WLAN card up and out of the PC.
2.
Insert the new WLAN card and lock it in the slot.
3.
Fasten the slot plate with a screw.
Inserting the FireWire card (for InEos) Inserting the FireWire card (for InEos)
Installation kit
Order No.
PCI FireWire card
62 40 845
Note on the overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55]. Inserting the FireWire card
✔ The PC is removed and opened.
A
FireWire PCI card
B
Slot lot (F (Fir ireW eWir ire e PCI card card inst instal alle led) d)
C
Supply board VP
1.
Remove the free PCI slot plate next to the VP supply board.
2.
Insert the FireWire PCI card and lock it into the slot.
3.
Fasten the PCI slot plate with a screw.
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4.3 Electrical and electromechanical components
4.3.2.3.3
Replacing the supply board (VP) Replacing thesupply board(VP)
Installation kit
Order No.
Supply board, ERS
61 37 421
Supply board, REP
61 37 439
Noteonthe overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55].
✔ The PC is removed and opened, seeRemoving see Removing and installing the PC [ → 55].
4.3.2.3.4
1.
Remove the two screws of the board holder and fold the board holder up.
2.
Pull the five plugs off of the supply board.
3.
Remove the screw from the PCI slot plate and pull the supply board upward and out of the PC.
4.
Insert the new supply board and lock it in the slot.
5.
Fasten the PCI slot plate with a screw.
6.
Insert the board holder in the PC and fasten it with the two screws.
Replacing the graphics card Replacing thegraphics card
Installation kit
Order No.
HA-HX graphics card
62 24 468
Noteonthe overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55]. see Removing and installing the ✔ The PC is removed and opened, seeRemoving PC [ → 55].
4.3.2.4
1.
Remove the two screws of the board holder and fold the board holder up.
2.
Remove the plug from the graphics card.
3.
Remove the screw from the PCI slot plate and pull the graphics card up out of the PC.
4.
Insert the new graphics card and lock it in the slot.
5.
Place the edge protector on the end of the graphics card. It has to be located underneath the board holder when installed.
6.
Fasten the PCI slot plate with a screw.
7.
Insert the board holder in the PC and fasten it with the two screws.
Replacing the loudspeakers Replacing theloudspeakers
Installation kit
Order No.
Loudspeaker unit (L20)
62 36 587
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Note on the overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55]. The is].removed and opened, seeRemoving see Removing and installing the ✔ P C [ PC → 55
4.3.2.5
1.
Remove the loudspeaker cable from the VP.
2.
Remove the four fastening screws of the loudspeaker from the outside.
3.
Lift the loudspeakers together with the cover grid out of the PC.
4.
Remove the cover grid from the loudspeaker.
5.
Place the new loudspeaker in the PC and place the cover grid over it.
6.
Fasten the loudspeaker to the PC with the four screws.
7.
Plug the loudspeaker cable into the VP.
Replacing fans (CEREC AC with Bluecam) Replacingfans (CEREC AC with Bluecam)
Installation kit
Order No.
Housing fan
62 36 447
Note on the overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, seePC seePC of the the a acqu cquisi isitio tion n un unit it [ → 55].
✔ The PC is removed and opened, seeRemoving see Removing and installing the PC [ → 55]. 1.
Remove the plugs from the fan.
2.
Slide the top fan laterally towards the other fan and carefully remove it from the PC.
3.
Slide the remaining fan laterally and carefully remove it from the PC.
4.
Replace the defective fan.
5.
Insert the fan and slide it laterally to its position.
6.
Insert the top fan and slide it laterally to its position.
7.
Connect the plugs of the fans.
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4.3 Electrical and electromechanical components
4.3.2.6
Replacing fans (CEREC AC with Omnicam) Replacing fans (CEREC AC withOmnicam)
Fan behind the DVD drive
A
Ü ë á ä Ö å b
B NOTICE Open with coin.
Use a coin to open the latch. Turn counterclockwise. 1.
Open door B on the back panel.
2.
Disconnect the round connector for the fan power supply from the RC board. To do so, pull the back panel upward from behind.
3.
Guide the cable for the power supply through the back panel.
4.
Open door A and remove it with the fan.
5.
Disconnect the fan from door A using a screwdriver.
Fan on the right-hand side 1.
Remove the back panel as described in the chapterRemoving chapterRemoving and insert inserting ing the bac back k panel panel [ → 39] . .
2.
Disconnect the power supply cable from the RC board.
3.
Unscrew the screw connections which connect the fan to the built-in unit of the acquisition unit.
4.
Remove the fan
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4.3 Electrical and electromechanical components
4.3.2.7
Service Manual CEREC AC
Replacing the power supply unit Replacingthe power supplyunit
Installation kit
Order No.
UPS PC power supply unit
61 86 477
Note on the overview illustration
NOTICE Position in the PC
See the overview illustration to determine the position in the PC, see "PC o off the the acq acquis uisiti ition on un unit it [ → 55]". ".
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4.3 Electrical and electromechanical components
Graphics:mainboardconnector assignment
Mainboard connector assignment
Ü ë á ä Ö å b
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Removing the power supply unit
✔ The PC is removed and opened, seeRemoving see Removing and installing the PC [ → 55].
✔ The hard drive with hard drive holder is removed, seeReplacing seeReplacing the hard hard driv drive e [ → 57] 57]. 1. 2.
Remove both screws of the board holder and remove the cable tie. Remove the board holder.
3.
Remove all power supply plugs.
4.
Disconnect the power supply plug from the mainboard (motherboard).
5.
Remove the connector from the supply board and the mainboard A ( ).
NOTICE When detaching the USB cable of the power supply unit, note the positions for subsequent reconnection. 6.
Remove the USB cable from the power supply unit and pull it out.
7.
Remove the two screws of the ATX angle bracket from the PC.
8.
Remove the four screws fastening the power supply unit to the holder.
9.
Tilt the power supply unit and pull it out diagonally.
Installing the power supply unit 1.
Insert the power supply unit in the holder provided for this purpose.
2.
Position the power supply unit with the four screws. Tighten the screws securely only after all four of them have been set.
3.
Fasten the ATX angle bracket to the PC with two screws.
4.
Reconnect the USB cable of the power supply unit. Observe the notes you made when removing.
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4.3 Electrical and electromechanical components
5.
Reconnect the supply board and the mainboard using connectorA.
6.
Reconnect the power supplies.
7.
Insert the board holder in the PC and fasten it with the two screws. Bunch the cables together and fasten them to the board holder with a cable tie. Do not tie the cables too short.
8. 9.
Place the hard drive holder in the PC, but don't lay it down. Fasten the hard drive holder to the PC with the four screws.
10. Reconnect the cables to the hard drive.
NOTICE Make sure that the fans are not blocked by the cables.
4.3.3
Control unit Controlunit
4.3.3.1
Removing and inserting the control unit Removing andinserting thecontrolunit
Installation kit
Order No.
Control unit, compl. (without keyboard)
62 35 852
Removal
✔ All covers are removed, see Re Remo movi ving ng co cove vers rs [ → 39] 39]. ✔ The monitor and monitor support are removed, seeM seeMon onit itor or [ → 43 43]].
Ü ë á ä Ö å b
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
1.
Remove the six screws of the control unit.
2.
Raise the complete control unit slightly.
3.
Disconnect the three-pole plug of the footswitch and the two-pole plug of the camera heater from the trackball button board. Then disconnect the two-pole plug from the keyboard board.
4.
Remove the cable ties.
5.
Disconnect the remaining plugs between the keyboard board and the trackball button board.
6.
Remove the built-in keyboard from the control unit.
Installation
NOTICE When performing the following installation steps, make sure that all plug connections snap in place correctly.
4.3.3.2
1. 2.
Mount the keyboard previously removed on the new control unit. Make the plug connections between the keyboard and the trackball button board.
3.
Make the remaining plug connections on the trackball button board and on the keyboard. To do this, connect the cable(L10) to connector X7 (right-handed operation) or X5 (left-handed operation).
4.
Place the control unit on the acquisition unit.
5.
Fasten the cables with cable ties and reconnect the plugs.
6.
Secure the control unit with the six screws.
Replacing the trackball button board Replacingthe trackballbutton board
Installation kit
Order No.
CEREC AC trackball button board
61 38 726
✔ The control unit is removed, see Removing and inserting the control unit [ → 65].
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4.3 Electrical and electromechanical components
A
1.
Disconnecting the plugs from and to the trackball button board.
NOTICE Make sure that no plugs or cables are damaged upon removal. 2. Remove the three screws (A). 3.
Remove the trackball button board by pulling it upwards.
4.
Insert the new trackball button board and fasten it to the control unit with the three screws (A).
5. Attach the plugs from and to the trackball button board.
4.3.3.3
Replacing the keyboard Replacing thekeyboard
Installation kit
Order no.
German keyboard
62 35 795
English keyboard
62 35 803
French keyboard
62 35 811
Spanish keyboard Italian keyboard
62 35 829 62 35 837
US keyboard
62 35 787
Russian keyboard
63 41 395
✔ The control unit is completely removed, seeRemoving see Removing and inserting the the cont contro roll un unit it [ → 65] 65].
Ü ë á ä Ö å b
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
1.
Remove the plugs from the back side of the keyboard.
2.
Remove the six studs.
3.
Remove the keyboard from the control unit.
4.
Place the keyboard in the control unit.
NOTICE Keyboard alignment
Align the keyboard while installing it.
4.3.3.4
5.
Fasten the keyboard to the control unit with the studs.
6.
Connect the plugs to the new keyboard. Make sure that they engage correctly.
Replacing the optical trackball Replacingthe opticaltrackball
Installation kit
Order No.
Optical trackball
62 35 878
✔ The control unit is completely removed, seeRemoving see Removing and inserting the the cont contro roll un unit it [ → 65 65]].
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4.3 Electrical and electromechanical components
B C
A
D
4.3.4
1. 2.
Unscrew the ring around the trackball ball and remove the ball. Remove the cables (A).
3.
Remove the three nuts (B) used to attach the optical trackball (C) to the control unit and remove the screws (D).
4.
Remove the optical trackball.
5.
Fasten the new optical trackball with the screws (D) and nuts (B).
6.
Connect the cables (A) to the optical trackball.
7.
Place the trackball back in position and fasten the ring.
Replacing the DVD drive Replacing theDVD drive
Installation kit
Order No.
DVD drive, compl.
62 36 199
Removal
B
A
1.
Open the top door on the back panel.
Ü ë á ä Ö å b
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
NOTICE Open with coin.
Use a coin to open the latch. Turn counterclockwise. 2.
Remove the cable (A) that is attached to the drive.
3.
Remove the screws (B).
NOTICE Screws with serrated lock washers
Be careful not to lose the serrated lock washers. 4.
Remove the entire drive.
Installation
4.3.5
1.
Push the new drive onto the slot.
2.
Fasten the screws (B).
3.
Reattach the door on the back panel.
Fuses Fuses
4.3.5.1
Replacing the main fuse Replacingthe mainfuse
WARNING Electric shock
Disconnect the power plug at the unit end before replacing the fuses.
NOTICE Fuse type
Use only fuses of the same type in the fuse module!
0 3 2
A
5 1 1
B
C D
A
Voltage selection insert
C
Fuse module
B
Main fuses
D
Window
Fuses:
T8A H 250V
✔ The power plug must be disconnected.
Order No. 62 33 188
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4.3 Electrical and electromechanical components
4.3.5.2
1.
Unlatch the fuse module with a screwdriver and pull the module out.
2.
Replace the defective fuses.
3.
Reinsert the fuse module.
Replacing fuse F3 Replacing fuseF3
WARNING Electric shock
Disconnect the power plug at the unit end before replacing the fuses.
NOTICE Fuse type
Use only fuses of the same type! Ü ë á ä Ö å b
A
A
B
Fuse holder
Fuses:
B
Fuse
T2,5A L 250V
Order No. 46 57 656
✔ The power plug must be disconnected.
4.3.6
1. 2.
Use a screwdriver to unscrew the fuse holder. Replace the defective fuse.
3.
Screw the fuse holder back in.
Replacing the battery Replacing thebattery
Installation kit
Order No.
24V battery pack
62 36 470
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4.3 Electrical and electromechanical components
Service Manual CEREC AC
Storagebattery
A B C
D
A
Bottom door
C
Battery cover
B
Storage battery
D
Battery connector
Replacingthebattery
1.
Open the lower door on the back panel.
NOTICE Open with coin.
Use a coin to open the latch. Turn counterclockwise. 2.
Remove the battery cover.
3.
Unplug the battery connector.
4.
Unscrew the fastening screw and remove the battery.
5.
Insert the new battery into the battery compartment with the fastening screw and screw it down.
6.
Plug in the battery plug.
7. Attach the battery cover. 8. Put the door back in position and lock it.
4.3.7
Replacing the isolating transformer Replacingthe isolatingtransformer
Installation kit
Order No.
Isolating transformer, compl.
62 36 348
Removing the isolating transformer
✔ The back panel is removed, see Removing and inserting the back panel [ → 39].
✔ The front panel is removed, see Removing and inserting the front panel [ → 40]. Replac lacing ing the the foots footswit witch ch [ → 74]. ✔ The footswitch is removed, see Rep
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4.3 Electrical and electromechanical components
1.
Carefully place the acquisition unit on its back.
2.
Remove the screw (A) of the top cover (B). Pull the cover towards the
3.
front, then lifting it up and out. Remove the ground wire (E) with pliers.
4.
Remove the screws (F) and take out the entire fuse block.
5.
Unscrew the holding nuts (D) of fuse F3 and remove the fuse from its holder.
6.
Remove the screws of the terminals (C).
7.
Remove the two screws from terminal block G.
H
8.
Unscrew the screw (H) from the transformer and remove it.
9.
Move the fuse block inward to the transformer.
10. Remove the transformer.
Installing the isolating transformer 1.
Insert the new transformer.
2. 3.
Move the fuse block to the holder. Fasten the screw (H) of the transformer.
4.
Fasten the terminal block (G) with the two screws.
Ü ë á ä Ö å b
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4.4 Mechanical components
Service Manual CEREC AC
5.
Insert the ground wire (E).
6.
Position fuse F3 and secure it with the holding nuts (D).
7.
Fasten the terminals (C) with one screw each.
8.
Position the cover (B) and fasten it with the screws (A).
9.
Position the fuse block and fasten it with the screws (F).
10. Place the acquisition unit upright again.
4.4 Mechanical components Mechanicalcomponents
4.4.1
Replacing the air filter Replacingthe air filter
4.4.2
Installation kit
Order No.
Air filter, footswitch
62 37 171
1.
Flip the foot pedal down.
2.
Pull out the filter.
3.
Place a new filter on the foot pedal surface.
4.
Close the foot pedal again.
Replacing the foot pedal Replacingthe foot pedal
Installation kit
Order No.
Foot pedal
62 36 306
1.
Flip the foot pedal down.
2.
Carefully place the unit on its back.
3.
Unhinge the foot pedal.
4. Attach the new foot pedal on the right side.
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4.4 Mechanical components
Ü ë á ä Ö å b
5. Attach the foot pedal (A) on the left side diagonally in the track and move it into the correct position. 6.
Insert a new air filter if needed.
7. Adjust the footswitch's switching point with the adjustment adjustment screw.
4.4.3
Replacing the footswitch Replacing thefootswitch
Installation kit
Order No.
Footswitch cable (L10)
62 36 520
✔ The back panel is fully removed, see Removing and inserting the back back pa pane nell [ → 39 39]].
✔ The front panel is fully removed, seeRemoving seeRemoving and inserting the front panel [ → 40].
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4.4 Mechanical components
Service Manual CEREC AC
B
C
D
A
TX6
Torx
1.
Remove the two screws (A). Be careful not to lose the washers.
2.
Pull off stop B.
3.
Remove the connection of the cable to the trackball button board.
4.
Cut the cable tie (C).
5.
Replace the footswitch (with cable) (D) with a new one.
6.
Plug the connector onto the trackball button board.
7.
Position the stop (B) on the footswitch and attach it loosely with the two screws (A) and the washers. The stop must be properly aligned to the footswitch (see illustration).
8.
Insert the footswitch in the recess and tighten the two screws securely.
9.
Bunch the cables with a new cable tie C.
10. Reattach all covers. 11. Adjust the footswitch's switching point with the adjustment adjustment screw.
4.4.4
Replacing the flap for the DVD drive Replacingthe flap for the DVD drive
Installation kit
Order No.
DVD flap, compl.
62 35 985
Removal
✔ The front panel is removed, see Removing and inserting the front panel [ → 40].
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4.4 Mechanical components
.
Open the DVD flap.
2.
Remove the two screws of the DVD flap.
3.
Pull the DVD flap to the inside from the front.
Installation
4.4.5
1.
Place the DVD flap in the front panel.
2.
Secure it with the two screws.
3.
Reattach all covers.
Replacing the handle Replacing thehandle
✔ The covers are removed (see "Re "Remo movi ving ng co cove vers rs [ → 39] 39]"). ✔ The monitor and monitor support are removed (see "R Replacing eplacing the moni mo nito torr sup suppo port rt [ → 51] 51]").
✔ The control unit is removed (see "Removing "Removing and inserting the control unit [ → 65]").
Ü ë á ä Ö å b
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4.4 Mechanical components
Service Manual CEREC AC
Replacing the handle
1.
Unscrew the four screws from the handle.
2.
Screw on the new handle with the four screws.
3.
Insert the control unit (see "Removing "Removing and inserting the control
4.
unit [ → 65]"). Install the monitor and the monitor support (see "Replacing the moni mo nito torr su supp ppor ortt [ → 51 51]]").
5. Attach the covers (see "Re "Remo movin ving g cover covers s [ → 39] 39]").
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5 Circuit diagrams
Service Manual CEREC AC
5
Circuit diagrams Circuitdiagrams
Ü ë á ä Ö å b
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5.1 CEREC AC with Bluecam
Service Manual CEREC AC
5.1 CEREC AC with Bluecam CEREC AC with Bluecam
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Service Manual CEREC AC
5.2 CEREC AC with Omnicam
5.2 CEREC AC with Omnicam CEREC AC withOmnicam
A
B
C
D
PC
L15
USBSchnittstelle
E
L12 1 2 3 4
USB
5VDC DD+ GND
F
Keyboard Controller 62 02 407
1 2 3 4
6
nc nc nc nc nc
5
ScrollLockCaps Lock
G
1 +
N
X6
X7
1 2
+12V
6
GND
X5
3 2 1
1
2 A
L9
A
3 A
4 A
A
5
6
7 A
A
8 A
1 B
2
3 B
4 B
B
B
5 B
6
7 B
B Y
V
N
E
2
N B
_
A
+ _
T
T
H
T V
N
1 T
O E X
O D X S A
A V 2
nc 8
2
R 1
D G
5
1 +
PCIe 63 46 048 D3492 7
X102
+12V 1,2 GND 3,4 D
X1
Trackball
,4 3 V 2
X2
X4
Chassis ,2
X8
L11
3
1
B4 B2 B3 A5 B1 B5 A2 A4 A3 A1
Grafik-Karte
L7
TT
61 38 718 D3492
1 2 3 4 5
LCD-Monitor
TMDSData 2- 1 TMDSData 2+ 2 TMDSData 2 shield 3 DDCclock 6 DDCdata 7 AnalogVerticalSync 8 TMDSData 1- 9 TMDSData 1+ 10 TMDSData 1 shield 11 Input DVI +5V14 Ground 15 Hot Plug Detect 16 TMDSData 0- 17 TMDSData 0+ 18 TMDSdata 0 shield 19 PowerTMDSclockshield 22 TMDSclock+ 23 DC-IN TMDSclock- 24 Analog Ground C5
G
L8
5
8 4
5
L6 F101 0,5A T
X101 +12V +12VHEATER nc 5VSTDBY ATX_ON2 GND nc ATX_ON1 X103 +9V nc GND
1 2 3 4 5 6 7 8
L18
FS
L10
4
1
3
4
4 L20 X108
1 2
X104
X109
L31 L22
X106 CERECACOmnicam
L24
L29
Motherboard
+ CR2032 3V
3
LithiumCell
3 L14
Slotblech SATA/Power
Data
DVD
L13 Power
b
L5
Akkusatz24V RD
BK
GND
RD
+24 V
F4 Circuitbreaker 20A
2
2
SE
Red
X1.3
S1
Netz
Mains
F1
L
Secteur
L2 BN
230V~
F2 N
Rete
L1
BU
N
GNYE
PE PC-Netzteilmit USV PC-Power pack with USV L’alimentation secteur avec USV Alimentación de red con USV Alimentazione a rete USV
X1.4
F1/F2:T 8AH250V~
1
1 63 81 862 D3492 Chassis
** Eigentum von Sirona. Alle Rechte vorbehalten. ** ** Property of Sirona, All rights reserved. **
A
B
C
Ü ë á ä Ö å
D
E
F
G
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6.1 When is the re-test carried out?
Service Manual CEREC AC
6
Re-test Re-test
6.1 When is the re-test carried out? Whenis there-test carried out?
The acquisition unit CEREC AC must be re-tested every time repair/ retrofitting work affecting one of the following components is completed: ●
PC
●
PC po pow wer sup uppl ply y
●
Isol Isolat atin ing g tran transf sfor orme mer r
●
Camera
●
Camera cable
A re-test must always be carried out at least every 36 months.
6.2 Description of device type Description ofdevicetype
The acquisition unit CEREC AC is a class I device with a detachable power supply cord. The camera is a type BF applied part.
6.3 To be carried out on completion of the test Tobe carriedouton completion of thetest
1.
Visual inspection
2.
Protective ground wire resistance
3.
Device leakage current
4.
Insulation resistance
5.
Functional test
6.4 What the test steps involve Whatthe teststeps involve
6.4.1
Visual inspection Visual inspection
6.4.2
●
Che Check ck tha thatt the devic device e labels labels are pres present ent and and legible legible
●
Do the fuses iinserte nserted d comply comply with with the p prescri rescribed bed rat rated ed fuse current current and fuse type?
●
Are a allll covers covers in intact? tact? There must be no visible visible gaps between between the covers that could result in injuries or via which contact could be made with electrical components located inside the device.
●
The There re must must be no no visibl visible e dam damage age to to any of of the cabl cables. es.
●
There must be no scratc scratches hes penetrat penetrating ing the the surface surface of the display display screen.
●
The There re must must b be e no c crac racks ks or chips chips on the pris prism. m.
Protective ground wire resistance Protectivegroundwire resistance
The protective ground wire resistance of the power cable (measured from plug to socket) must be ≤ 100 mΩ.
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6.4 What the test steps involve
The protective ground wire resistance from the power input of the acquisition unit CEREC CEREC AC to the PC rear panel must be ≤ 200 mΩ. The protective ground wire resistance from the power cable plug to the PC rear panel must be ≤ 300 mΩ.
6.4.3
Device leakage current Deviceleakagecurrent
The device leakage current must be measured in relation to the PC rear panel. In the case of direct measurement under normal conditions it must be ≤ 0.1 mA. In the case of a first fault (protective ground wire disconnected), it must be ≤ 0.5 mA. mA.
6.4.4
Insulation resistance Insulationresistance
Since the camera is an applied part and does not have a patient connection, when re-testing is carried out, the insulation resistance is measured instead of the patient leakage current. An instrument able to provide a test voltage of 500 VDC must be used to take the measurement.
●
Pro Protec tectiv tive e grou ground nd and PC PC power power supply supply unit unit housin housing g
Ü ë á ä Ö å
●
Prote Protective ctive ground and metal metal part part at the front front of the camera camera lens
b
The insulation resistance is measured between:
In both cases, the insulation resistance must be ≥ 0.1 MΩ.
6.4.5
Functional test Functionaltest
1.
Once the above test steps have been completed, restore the acquisition unit CEREC AC to normal operating conditions.
2.
Switch the acquisition unit CEREC AC on for the functional test.
3.
Once booting is complete, start the CEREC application.
4.
Take a camera shot of the calibration piece suspended from the camera.
The resulting image must not exhibit any surface defects.
The re-test is now complete. If any of the test criteria have not been met, the acquisition unit CEREC AC must be repaired accordingly. ➢ Record the completion of the test steps in the test report. The test reports are recorded in a separate document in the relevant national language and can be accessed via the partner portal by quoting the material numbers listed below. Language
Material number
English
6392364
English
6392372
French
6392380
Spanish
6392398
Italian Swedish
6392406 6392505
Russian
6392414
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6.4 What the test steps involve
Service Manual CEREC AC
Language
Material number
Danish
6392422
Norwegian
6392430
Dutch
6392448
Finnish
6392455
Japanese
6392463
Portuguese
6392471
Korean
6392489
Chinese
6392497
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62 34 269 D3492 D3492.076.01.03.02 07.2012
Sirona Dental Systems GmbH Service Manual CEREC AC
6 Re-test 6.4 What the test steps involve
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62 34 269 D3492 D3492.076.01.03.02
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