A320 Computer Reset NOV11

COMPUTER RESET GUIDE FOR REFERENCE USE ONLY The data contained herein is intended to assist troubleshooting only and is not a substitute for Airbus and/or operator’s manuals. Fault correcting maintenance and the aircraft’s “return to service” testing shall be accomplished in full accordance with proper Airbus and/or operator’s manuals

Revision date: Nov 01/11

Subtask 24-00-00-810-069-A Computer reset procedure NOTE:This reset procedure is used when a computer does not operate correctly. NOTE:The line maintenance personnel can use it a first time to avoid a computer replacement (a reset must be done for the applicable computer as indicated in the Computer Reset Table). But, if there is more than one reset for each flight cycle for a given computer, it is necessary to do the specific troubleshooting procedure for the applicable system. If after a reset, the computer operates correctly, no more action is necessary. (1)To do computer reset: (a)Set the related normal cockpit control to OFF, or open the related circuit breaker as specified in the reset procedure. (b)Wait 3 seconds if a normal cockpit control is used, or 5 seconds if a circuit breaker is used (unless a different time is indicated). (c) Set the related normal cockpit control to ON, or close the related circuit breaker. (d)Wait 3 seconds for the end of the reset.

Subtask 24-00-00-810-075-A Air Conditioning ATA 21

SYSTEM MALFUNCTION CAB PR SYS 1(2) FAULT

COMPUTER

RESET PROCEDURE

CABIN

For CPC 1:

PRESSURE

- On panel 49VU, open the C/B 1HL.

CONTROLLER

FOR CPC 2:

1(2)

- On panel 122VU, open the C/B 2HL. After 5 seconds, close the C/B.

21

COND ZONE REGUL FAULT

ZONE

On the panel 122VU:

TEMPERATURE - Open the C/B 1HK CONTROLLER

- Open the C/B 2HK After 5 seconds, close the C/B.

21

AIR FWD (AFT) CRG VENT

CARGO

On the panel 49VU:

FAULT

VENTILATION

- Open the C/B 2NH

CONTROLLER

- Open the C/B 31HN After 5 seconds, close the C/B.

21

VENT AVNCS SYS FAULT

AEVC

On the panel 122VU:

ATA

SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE - open the C/B 3HQ After 5 seconds, close the C/B

21

AIR PACK 1(2) REGUL FAULT PACK

For the pack controller 1:

CONTROLLER

- on the panel 122VU, open then close the C/B 2HH.

1(2)

For the pack controller 2: - on the panel 122VU, open then close the C/B 22HH.

21

COND AFT CRG HEAT FAULT AFT CARGO

On the panel 49VU:

HEAT

- Open the C/B 31HN.

CONTROLLER

- After 5 seconds, close the C/B.

Subtask 24-00-00-810-076-A Auto Flight ATA 22

SYSTEM MALFUNCTION

COMPUTER

AUTO FLT YAW DAMPER 1(2) FAC1(2) FAULT

RESET PROCEDURE Open these C/Bs with the Yellow and Green hydraulic systems pressurized: - for the FAC 1: on the panel 49VU, C/B 5CC1 - for the FAC 2: on the panel 121VU, C/B 5CC2

ATA

SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE Then close the C/Bs after 10 seconds.

22

WINDSHEAR DET FAULT or

FAC 1+2

REAC W/S DET FAULT

Open then close the C/Bs in this the order: - on the panel 49VU, C/B 5CC1 and C/B 14CC1 - on the panel 121VU, C/B 5CC2 and C/B 14CC2.

22

AUTO FLT FCU 1(2) FAULT

FCU

For the FCU1: - on the panel 49VU, open the C/B 9CA1. For the FCU2: - on the panel 121VU, open the C/B 9CA2. Close the C/B after 5 seconds. If the fault does not continue, do a check of the target and barometer references shown, and correct them if necessary (reset successful). If the fault continues, open again the two C/Bs 9CA1 on 49VU and 9CA2 on 121VU. Close the C/Bs after 7 min, with an interval less than 5 sec between side 1 and side 2. At least 30 sec are necessary until the end of the FCU1 and FCU2 safety test. If the fault does not continue, do a check of the target and

ATA

SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE barometer references shown, and correct them if necessary (reset successful) If the fault continues, end of procedure (reset unsuccessful).

22

One MCDU locked or blank

MCDU

Open then close the C/B of the defective MCDU after 10 seconds:

Both MCDUs locked or blank

FMGC

- For the MCDU1: on the panel 121VU or panel 49VU, C/B 11CA1. - For the MCDU2: on the panel 121VU, C/B 11CA2. - For the MCDU3: on the panel 121VU, C/B 11CA3.

22

FMGC malfunction

FMGC

On the panel 121VU or 49VU: - open the FMGC 1 C/B 10CA1 and close it after 10 seconds. If there is no reset of the FMGC 1, do a reset of the FMGC 2 on the panel 121VU: - open the C/B 10CA2 and close it after 10 seconds.

Subtask 24-00-00-810-077-A Communications ATA SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE

ATA SYSTEM MALFUNCTION 23

COM CIDS 1+2 FAULT

COMPUTER CIDS

RESET PROCEDURE - Open the C/Bs in this order: on the panel 49VU, C/B 150RH on the panel 121VU, C/B 151RH - After 10 seconds, close the C/Bs in this order: 151RH, 150RH.

23

Uncommanded EVAC horn CIDS

Press the EVAC/HORN SHUT OFF switch.

actuation

If unsuccessful: - Open the C/Bs in this order: on the panel 49VU, C/B 150RH on the panel 121VU, C/B 151RH - After 10 seconds, close the C/Bs in this order: 151RH, 150RH.

23

Frozen RMP

RMP

You must do a reset of all the RMPs, one after the other. On the RMP control panel: - set the ON/OFF switch to OFF - after 5 seconds, set the ON/OFF switch to ON.

ATA SYSTEM MALFUNCTION 23

Frozen FAP

COMPUTER Tape reproducer

RESET PROCEDURE On the panel 121VU, open the FAP C/B 170RH. - After 10 seconds, close the C/B 170RH. If unsuccessful: on the panel 2000VU - open the tape reproducer /PRAM C/B 2RX. After 10 seconds, close the C/B.

Subtask 24-00-00-810-077-C Communications ATA SYSTEM MALFUNCTION 23

COM CIDS 1+2 FAULT

COMPUTER CIDS

RESET PROCEDURE - Open the C/Bs in this order: on the panel 49VU, C/B 150RH on the panel 121VU, C/B 151RH - After 10 seconds, close the C/Bs in this order: 151RH, 150RH.

23

Uncommanded EVAC horn actuation

CIDS

Press the EVAC/HORN SHUT OFF switch. If unsuccessful:

ATA SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE - Open the C/Bs in this order: on the panel 49VU, C/B 150RH on the panel 121VU, C/B 151RH - After 10 seconds, close the C/Bs in this order: 151RH, 150RH.

23

Frozen RMP

RMP

You must do a reset of all the RMPs, one after the other. On the RMP control panel: - set the ON/OFF switch to OFF - after 5 seconds, set the ON/OFF switch to ON.

23

Frozen FAP

Tape reproducer

Open the C/Bs in this order: On the panel 49VU, CB 171RH On the panel 121VU, CB 170RH - After 10 seconds, close the C/Bs in this order: 170RH, 171RH If unsuccessful: on the panel 2000VU - open the tape reproducer /PRAM C/B 2RX.

ATA SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE After 10 seconds, close the C/B.

Subtask 24-00-00-810-088-A Electrical Power ATA SYSTEM MALFUNCTION

COMPUTER

24

GAPCU

GPU cannot be connected to the aircraft

RESET PROCEDURE If at least one power source (IDG 1 or IDG 2, APU GEN or batteries) is connected to the electrical network of the aircraft: - On the ELEC control panel 35VU: . Push and release the EXT PWR pushbutton switch. If no power source is connected to the electrical network of the aircraft: - On the ELEC control panel 35VU: . Push the BAT 1 and BAT 2 pushbutton switches (the OFF legend goes off).

Subtask 24-00-00-810-078-A Fire Protection ATA SYSTEM MALFUNCTION 26

SMOKE LAV + CRG DET

COMPUTER SDCU

RESET PROCEDURE On the panel 49VU:

ATA SYSTEM MALFUNCTION

COMPUTER

FAULT

RESET PROCEDURE - open the C/B 11WQ On the panel 122VU: - open the C/B 12WQ After 10 seconds, close the two C/B's.

26

ENG1(2) LOOP k FAULT

ENGINE FDU

On the panel 49VU: - For ENG1 FDU, open the C/B 7WD1. - For ENG2 FDU, open the C/B 8WD2. On the panel 121VU: - For ENG1 FDU, open the C/B 8WD1. - For ENG2 FDU, open the C/B 7WD2. - After 5 seconds, close the C/Bs.

26

APU FIRE LOOP k FAULT

APU FDU

On the panel 121VU: - Open the C/Bs 2WG and 1WG. - After 5 seconds, close the C/Bs.

Subtask 24-00-00-810-079-A Flight Controls

ATA SYSTEM MALFUNCTION 27

F/CTL ELAC 1(2) FAULT

COMPUTER ELAC

F/CTL ALTN LAW FAULT

RESET PROCEDURE Reset the defective ELAC: - Make sure that the hydraulic systems are depressurized before the reset. - Set the ELAC pushbutton switch to OFF, then to ON.

27

ELAC or SEC malfunction

ELAC or SEC

Reset the defective ELAC: - Make sure that the hydraulic systems are depressurized before the reset. Open, then close the C/B of the defective ELAC or SEC. For the ELAC 1(2): - On the panel 49VU, C/B 15CE1. - On the panel 121VU, C/B 15CE2. For the SEC 1(2)(3): - On the panel 49VU, C/B 21CE1. - On the panel 121VU, C/B 21CE2 or 21CE3.

27

E/W FCDC1(2) FAULT

FCDC

On the panel 49VU: - For FCDC1, open the C/B 20CE1. - For FCDC2, open the C/B 20CE2.

ATA SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE - After 5 seconds, close the C/Bs.

Subtask 24-00-00-810-089-A Fuel ATA

28

SYSTEM MALFUNCTION Loss of fuel quantity indication or,

COMPUTER

FQIC

RESET PROCEDURE

On the overhead circuit breaker panel 49VU: - Open the C/B 1QT.

Simultaneous triggering of FUEL L XFR VALVE CLOSED and FUEL R XFR

On the rear circuit breaker panel 121VU: - Open the C/B 2QT. After 5 seconds, close the two C/B's.

VALVE CLOSED, although FUEL SD indicates no anomaly. Subtask 24-00-00-810-080-A Ice and Rain Protection ATA SYSTEM MALFUNCTION

COMPUTER

RESET PROCEDURE

ATA SYSTEM MALFUNCTION 30

ANTI ICE

COMPUTER WHC

L(R)/WINSHIELD (WINDOW)

RESET PROCEDURE Open then close the C/B of the defective WHC. For the WHC1: - on the panel 122VU, C/B 5DG1. For the WHC2: - on the panel 122VU, C/B 5DG2.

Subtask 24-00-00-810-081-A Indicating/Recording Systems ATA SYSTEM MALFUNCTION

COMPUTER

31

FWC

FWS FWC 1(2) FAULT

RESET PROCEDURE Open then close the C/B of the defective FWC For the FWC1: - on the panel 49VU, C/B 3WW For the FWC2: - on the panel 121VU, C/B 2WW.

Subtask 24-00-00-810-082-A Landing Gear ATA SYSTEM MALFUNCTION COMPUTER

RESET PROCEDURE

ATA SYSTEM MALFUNCTION COMPUTER 32

Braking malfunction

BSCU

RESET PROCEDURE On the panel 121VU: - open the C/Bs 1GG, 2GG, 3GG and 4GG - after 5 seconds, close the CB's

32

L/G LGCIU 1(2) FAULT

LGCIU 1(2)

For the LGCIU 1: - on the panel 121VU, open the C/B 52GA then on 49VU, C/B 1GA. Then close the C/B 1GA and C/B 52GA For the LGCIU 2: - on the panel 121VU, open then close the C/B 2GA.

Subtask 24-00-00-810-083-A Navigation ATA SYSTEM MALFUNCTION COMPUTER 34

NAV MMR 1(2) FAULT

MMR1(2)

RESET PROCEDURE For the MMR 1: - On the panel 49VU, open the C/B 42RT1. - After 5 seconds, close the C/B. For the MMR 2: - On the panel 121VU, open the C/B 42RT2.

ATA SYSTEM MALFUNCTION COMPUTER

RESET PROCEDURE - After 5 seconds, close the C/B.

34

NAV TCAS FAULT

TCAS

On the panel 121VU: - Open the C/B 4SG. - After 5 seconds, close the C/B.

34

NAV GPWS FAULT

GPWC

- Open the C/B 3WZ.

NAV GPWS TERR DET FAULT 34

NAV GPS 1(2) FAULT

On the panel 121VU: - After 5 seconds, close the C/B.

GPSSU

On the panel 121VU: - For GPSSU1, open the C/B 2SN1. - For GPSSU2, open the C/B 2SN2. - After 5 seconds, close the C/Bs.

34

NAV RA 1(2) FAULT

XCVR-RA

On the panel 121VU: - For XCVR-RA 1, open the C/B 1SA1. - For XCVR-RA 2, open the C/B 1SA2. - After 5 seconds, close the C/Bs.

Subtask 24-00-00-810-084-A Water/Waste ATA SYSTEM MALFUNCTION COMPUTER 38

Fault messages on the FAP in the cabin

Vacuum System Controller

RESET PROCEDURE On the panel 2001VU: - open the C/B 35MG - after 30 seconds, close the C/B.

Subtask 24-00-00-810-085-A Information Systems ATA SYSTEM MALFUNCTION COMPUTER 46

ATSU malfunction

ATSU

RESET PROCEDURE On the rear circuit breaker panel 121VU: - Open the C/Bs in this order: 3TX1 and 5TX1. - After 5 seconds, close the C/Bs in this order: 5TX1 and 3TX1.

Subtask 24-00-00-810-086-A Engine ATA SYSTEM MALFUNCTION COMPUTER 70

ENG IGN A+B FAULT

FADEC and

RESET PROCEDURE On the panels 49VU and 121VU open then close the C/B of

ATA SYSTEM MALFUNCTION COMPUTER

RESET PROCEDURE

EIU 70

ENG 1(2) FADEC A(B) FAULT

FADEC

- For the FADEC 1, C/Bs 2KS1 and 4KS1. - For the FADEC 2, C/Bs 2KS2 and 4KS2.

Subtask 24-00-00-810-090-A Engine Indicating ATA SYSTEM MALFUNCTION COMPUTER 77

RESET PROCEDURE

Loss of N1VIB and N2VIB EVMU

On the panel 121VU:

indications for ENG1(2) in ECAM SD

- Open the C/B 2EV. - After 5 seconds, close the C/B.