GP1850 Service Manual - Furuno

Back

GPS PLOTTER GP-1850/W Series

The paper used in this manual is elemental chlorine free.

・FURUNO Authorized Distributor/Dealer 9-52 Ashihara-cho, Nishinomiya, 662-8580, JAPAN Telephone : +81-(0)798-65-2111 Fax

: +81-(0)798-65-4200

All rights reserved.

Printed in Japan

A : DEC . 2002 A2 : AUG . 22, 2008

Pub. No. SME-43950-A2 (KAOK )

GP-1850/1850W SER.

*00080992600* *00080992600* * 0 0 0 8 0 9 9 2 6 0 0 *

Table of Contents 1. General …………………………………………………………. 1 2. Difference between GP-1850 and GP-1850W …..…………. 1 3. Difference between D, F and DF ……………………….……. 2 4. Replacing major parts …………………………………………. 2 5. How to install DGPS beacon receiver………..…………….… 4 6. Replacing lithium battery ……………………………………… 4 7. How to change software to C-MAP version ………..……..… 5 8. How to upgrade system program …….…………….……..…… 7 9. Troubleshooting …………………………………………………… 8 9.1 Self test ……………………………………………………. 8 9.2 Troubleshoot guide ………………..……………………….. 9

Exploded View…………………………….………………………… D-1 Electrical Parts List Schematic Diagrams

………………………………………………… E-1 ……………………………………………… S-1

i

This page is intentionally left blank.

1. General The GP-1850/W series display unit consists of the following components. Parts Name MAIN board

ANLG board PNL board GPS receiver BEACON receiver LCD unit

Function The board, heart of the unit consits of a CPU, ROM, RAM, Card Interface circuit, a buzzer and a lithium battery. The board generates high voltage for LCD backlighting. The difference between A, B, E, and F is system program only. The board includes power supply and echosounder circuits. The board consists of key switches and backlight LEDs. The receiver receives and processes satellite signal for position fix. The receiver receives radiobeacon DGPS to remove errors in GPS position fix. High voltage for LCD backlighting is derived from J101 on MAIN board to Cold Cathode Fluorescent Light (CCFL) in the LCD unit.

TX Output signal of echosounder circuit 50 kHz and 200 kHz transmitters in echosounder circuit on 14P0313B board outputs the following signal to the transducer. Range setting: 1200 m 50 kHz: 20 to 25 Vpp

Oscilloscope setting:

200 kHz: 27 to 32 Vpp

5 V/div, 200 us/div

(600 W)

Test points: Pins 8 and 10 on J2 (with XDR connected)

0.2 ms

Fig.1

TX waveform of echosounder

2. Difference between GP-1850 and GP-1850W MAIN boards, 14P0311X and 14P0311XW are the same in hardware, but not in software. Component MAIN board GPS receiver

LCD unit LCD protective panel ANLG board PNL board BEACON receiver

GP-1850 GP-1850W 14P0311X 14P0311XW (Not supporting WAAS) (Supporting WAAS) GN7707 (original) GN8091 GN7801 (compatible with (Supporting WAAS) GN7707) EDTCA-03QCF EDTCA-03QCF-AR Acrylic plate AR acrylic plate 14P0313 14P0312 GR-8020 (original), GR-7000A (Jan. 2000 and after) 1

3. Difference between D, F and DF The letter D in the model indicates that the beacon receiver for differencial correction of GPS receiver is buit in the unit. The letter F indicates that the unit features echosounder capability. 14P0311C(W) and D(W) a re for Japanese version.

MAIN board

GP-1850(W) 14P0311A(W) 14P0311E(W) 14P0313A Not buit-in

ANLG board BEACON receiver Key top (right XTE HIWAY to PLOT key)

GP-1850D(W) 14P0311A(W) 14P0311E(W) 14P0313A Built-in

GP-1850F(W) 14P0311B(W) 14P0311F(W) 14P0313B Not buit-in

GP-1850DF(W) 14P0311B(W) 14P0311F(W) 14P0313B Built-in

XTE HIWAY

SNDR

SNDR

4. Replacing major parts To replce the major parts, follow the steps below. 1. Place the unit on soft surface – face down. Remove all nuts (arrowed in Fig.2) and 12 screws (ringed) fixing the cover to the front panel. Then, lift the cover. Fig.3 shows GP-1850/W series display unit with the cover removed.

Fig. 2

GP-1850/W series display unit, rear view

ANLG board (14P0313A/B) Connectors: ANT, XDR*, DGPS, NMEA and PWR, from left *: only F version

Fig.3

Do not lose connector gaskets!

GP-1850/W series display unit with cover removed 2

2. Remove the screw fixing the GND wire to MAIN board. Then, pull ANLG board assembly straight upward.

GND wire

Fig.4

GP-1850/W series display unit with cover removed, top view

3. Remove the shield cover, and unplug J2, J4 and J6 on MAIN board. The MAIN board is battery backupped, so it is recommended that before removing MAIN board, disconnect either lead of JP6 not to damage the components on the board by a short circuit. With JP6 disconnected, the board is not battery backupped. Lithium battery at soldering side MAIN board, 14P0311

JP6 J2

J4 (Release locking tab by pushing it toward cable.)

J6 (Release locking tab by pushing it toward cable.)

LCD unit mounting plate with LCD unit on the back

Fig.5

MAIN board, 14P0311

Now the LCD unit can also be removed together with the mounting plate.

3

5. How to install DGPS beacon receiver Refer to the installation manual.

6. Replacing lithium battery To replace the battery with new one, follow the steps below. 1. Disconnect JP6 on MAIN board. See Fig.5. 2. Use a desoldering tool to remove the battery from MAIN board. 3. Solder the replacement battery onto the board. 4. Solder JP6. CAUTION 1) Replace the battery only with CR2450-F2 ST2L (000-144-941). 2) Never short + and – sides of the cell. 3) The lithium cell may explode resulting in a fire or chemical burn if mistreated. Do not recharge, disassemble heat, or incinerate. 4) Follow local ordinances or regulations for the disposal.

Lithium Battery Type: CR2450-F2ST2L C/N: 000-144-941

Fig.6

MAIN board, soldering side

4

7. How to change software to C-MAP version GP-1640 sereis uses following programs. Navionics version 14518260XX 14518270XX 14518260XX 14518270XX

GP-1850/D : GP-1850F/DF: GP-1850W/WD: GP-1850WF/WDF

C-MAP version 14518400XX 14518410XX 14518400XX 14518410XX

1) By using PC The following explains how to upgrade the software by using a PC. The “up boot” upgradation is carried out only when requested. Before upgradation The batch file “up_boot. bat” is designed for the use of COM2 port of the PC. When COM 1 port is used, the batch file needs to be modified by using a text editor application such as Note Pad. The last number is changed from “2” to “1” when COM 1 port is used. Uppg load. bin GPXXXX. 0 0 1 0 0 0 2

Procedure 1. Copy all files in EXE files to PC. 2. Connect the COM port of the PC to the DGPS port of the plotter.

DGPS (MJ-7P)

(DSUB 9P) COM 1

PC

5> DTR >4> DSR >6> RTS >7> CTS >8> >9>

NC NC RD SD PLOTTER NC SG SHIELD

Fig. 7(a) Connection with PC (9 pin Dsub)

5

DGPS (MJ-7P

(DSUB 25P) COM 1 >1> TxD >2> RxD >3> DTR >4> PC DSR >5> GND >7> RTS >6>