W DOC AIRBUS | TSM A320F

Failure at the Overhead-Panel Integral Lighting

TASK 33-13-00-810-802-A
Failure at the Overhead-Panel Integral Lighting

NOTE: All the instruments or panels that follow are possible causes. If one or several instrument(s) and/or panel(s) is(are) not installed for your aircraft, the troubleshooting procedure is not applicable.
1. Possible Causes
  • wiring
  • ACP-3RD OCCPNT [2RN3]
  • [2RN5]
  • VOLTMETER-BAT 1 [3PV1]
  • VOLTMETER-BAT 2 [3PV2]
  • CONTROL PANEL-REMOTE,ELT [111MX]
  • [940WR]
  • [2RZ]
  • [10QT]
  • ENG/APU FIRE PNL [1WD]
  • [81QT]
  • [1RG3]
  • CDU-ADIRS [2FP]
  • fuse
  • CONTROLLER-LIGHTING [6LF]
  • overhead integral-lighting potentiometer (7LF)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 33-13-00-710-001
Operational Test of the Instrument and Panel Integral-Lighting
ASM 331302
AIPC 331308
AMM 33-13-42-000-001
Removal of the Integrally-Lighted Identification Plate
AMM 33-13-42-400-001
Installation of the Integrally-Lighted Identification Plate
AMM 33-13-51-000-001
Removal of the Lighting Controller
AMM 33-13-51-400-001
Installation of the Lighting Controller
F Instrument and Panel Integral Lighting ** ON A/C NOT FOR ALL
F Integral Lighting Controller Overhead 6 LF ** ON A/C NOT FOR ALL
F Integral Lighting Controller Overhead 6 LF ** ON A/C NOT FOR ALL
FOR [1RG3]
AMM 23-13-13-000-001
Removal of the Radio Management Panel (RMP)
AMM 23-13-13-400-001
Installation of the Radio Management Panel (RMP)
ASM 331302
FOR [1WD] (ENG/APU FIRE PNL)
AMM 26-12-12-000-001
Removal of the ENG/APU Fire Panel
AMM 26-12-12-400-001
Installation of the ENG/APU Fire Panel
ASM 331302
FOR [10QT]
AMM 28-42-21-000-002
Removal of the Fuel Quantity Preselector
AMM 28-42-21-400-002
Installation of the Fuel Quantity Preselector
ASM 331302
FOR [111MX] (CONTROL PANEL-REMOTE,ELT)
AMM 25-65-18-000-001
Removal of the Remote-Control Panel (RCP) (Emergency Locator Transmitter)
AMM 25-65-18-400-001
Installation of the Remote-Control Panel (RCP) (Emergency Locator Transmitter)
ASM 331302
FOR [2FP] (CDU-ADIRS)
AMM 23-13-13-400-001
Installation of the Radio Management Panel (RMP)
ASM 331302
AMM 34-12-12-000-001
Removal of the ADIRS CDU
AMM 34-12-12-400-001
Installation of the ADIRS CDU
FOR [2RN3] (ACP-3RD OCCPNT)
AMM 23-51-12-000-001
Removal of the Audio Control Panel (ACP) (2RN1, 2RN2, 2RN3, 2RN4, 2RN5)
AMM 23-51-12-400-001
Installation of the Audio Control Panel (ACP) (2RN1, 2RN2, 2RN3, 2RN4, 2RN5)
ASM 331302
FOR [2RN5]
AMM 23-51-12-000-001
Removal of the Audio Control Panel (ACP) (2RN1, 2RN2, 2RN3, 2RN4, 2RN5)
AMM 23-51-12-400-001
Installation of the Audio Control Panel (ACP) (2RN1, 2RN2, 2RN3, 2RN4, 2RN5)
ASM 331302
FOR [2RZ]
AMM 23-14-12-000-001
Removal of the Crypto Voice Control Panel
AMM 23-14-12-400-001
Installation of the Crypto Voice Control Panel
ASM 331302
FOR [3PV1] (VOLTMETER-BAT 1)
AMM 24-37-21-000-001
Removal of the Voltmeters
AMM 24-37-21-400-001
Installation of the Voltmeters
ASM 331302
FOR [3PV2] (VOLTMETER-BAT 2)
AMM 24-37-21-000-001
Removal of the Voltmeters
AMM 24-37-21-400-001
Installation of the Voltmeters
ASM 331302
FOR [81QT]
AMM 28-42-23-000-001
Removal of the ACT Fuel Quantity Indicator
AMM 28-42-23-400-001
Installation of the ACT Fuel Quantity Indicator
ASM 331302
FOR [940WR]
ASM 331302
AMM 35-23-22-000-001
Removal of the Passenger Oxygen Indication-Panel (POXIP)
AMM 35-23-22-400-001
Installation of the Passenger Oxygen Indication-Panel (POXIP)
3. Fault Confirmation
Subtask 33-13-00-710-052-A ** ON A/C NOT FOR ALL
A. Test
   (1) Do only the test of the integral lighting of the overhead panel AMM 33-13-00-710-001.
F Instrument and Panel Integral Lighting ** ON A/C NOT FOR ALL
If, during this operational test, on the INT LT section of the overhead control and indicating panel 25VU:
  • When you turn the OVHD INTEG LT potentiometer (7LF) from OFF to BRT ASM 331302:
     (a) One light of one integral-lighted identification plate does not operate, go to Para 4.A.
     (b) The integral lighting of one instrument or panel does not operate, go to Para 4.B.
     (c) The integral lighting of more than one instruments and/or panels connected to the same fuse output do not operate, go to Para 4.C.
     (d) The integral lighting of all the panels and/or the instruments do not operate, go to Para. 4.D.
Subtask 33-13-00-710-052-B ** ON A/C NOT FOR ALL
A. Test
   (1) Do only the test of the integral lighting of the overhead panel AMM 33-13-00-710-001.

  • If, during this operational test, on the INT LT section of the overhead control and indicating panel 25VU:
    When you turn the OVHD INTEG LT potentiometer (7LF) from OFF to BRT ASM 331302:
     (a) The integral lighting of one identification plate does not operate, go to Para 4.A.
     (b) The integral lighting of one instrument or panel does not operate, go to Para 4.B.
     (c) The integral lighting of more than one instrument or panel connected to the same fuse output does not operate, go to Para 4.C.
     (d) The integral lighting of all the panels and/or the instruments do not operate, go to Para. 4.D.
     (e) The integral lighting of more than one panels connected to the same pulse width modulation output do not operate, go to Para 4.E.
4. Fault Isolation
Subtask 33-13-00-810-051-A ** ON A/C NOT FOR ALL
A. One light of one integral-lighted identification-plate does not operate
   (1) Remove the related integrally-lighted identification-plate AMM 33-13-42-000-001.
   (2) Replace the defective lamp of the related integrally-lighted identification-plate.
NOTE: Refer to the applicable CMM related to the P/N of the integrally-lighted identification-plate AIPC 331308 for removal/installation instructions.
   (3) Install the related integrally-lighted identification-plate AMM 33-13-42-400-001.
Subtask 33-13-00-810-051-B ** ON A/C NOT FOR ALL
A. The integral lighting of one plate does not operate.
   (1) Remove the related integrally-lighted identification-plate, AMM 33-13-42-000-001.
   (2) Do a check for continuity between the pin A/1 of the electrical connector of the related integrally-lighted identification-plate and the first terminal block ASM 331302.
     (a) If there is no continuity:
  • Repair the wiring between pin A/1 of the related integrally-lighted identification-plate and the first terminal block.
     (b) If there is continuity:
  • Do a check for a ground signal at pin A/N of the instrument or the panel, ASM 331302.
       1 If there is a ground signal:
       2 If there is no ground signal:
  • Repair the wiring.
  • Install the related integrally-lighted identification-plate AMM 33-13-42-400-001.
Subtask 33-13-00-810-054-A
B. The integral lighting of one instrument or panel does not operate
NOTE: All the instruments or panels that follow are possible causes. If one or several instrument(s) and/or panel(s) is(are) not installed for your aircraft, the troubleshooting of instrument(s) and/or panel(s) that is(are) not installed is(are) not applicable.
   (1) FOR [2RN3] (ACP-3RD OCCPNT)
     (a) Remove the Third Occupant ACP (2RN3) AMM 23-51-12-000-001.
     (b) Do a check for voltage at pin A/A of the electrical connector of the Third Occupant ACP (2RN3), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/A of the Third Occupant ACP (2RN3) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/B of the electrical connector of the Third Occupant ACP (2RN3), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the Third Occupant ACP (2RN3) pin A/B to the terminal ground.
  • Install the Third Occupant ACP (2RN3) AMM 23-51-12-400-001.
   (2) FOR [2RN5]
     (a) Remove the Fourth Occupant ACP (2RN5) AMM 23-51-12-000-001.
     (b) Do a check for voltage at pin A/A of the electrical connector of the Fourth Occupant ACP (2RN5), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/A of the Fourth Occupant ACP (2RN5) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/B of the electrical connector of the Fourth Occupant ACP (2RN5), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the Fourth Occupant ACP (2RN5) pin A/A to the ground terminal.
  • Install the Fourth Occupant ACP (2RN5) AMM 23-51-12-400-001.
   (3) FOR [3PV1] (VOLTMETER-BAT 1)
     (a) Remove the battery 1 voltmeter (3PV1) AMM 24-37-21-000-001.
     (b) Do a check for voltage at pin E of the electrical connector of the battery 1 voltmeter (3PV1), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin E of the battery 1 voltmeter (3PV1) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin K of the electrical connector of the battery 1 voltmeter (3PV1), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the battery 1 voltmeter (3PV1) pin E to the ground terminal.
  • Install the battery 1 voltmeter (3PV1) AMM 24-37-21-400-001.
   (4) FOR [3PV2] (VOLTMETER-BAT 2)
     (a) Remove the (3PV2) AMM 24-37-21-000-001.
     (b) Do a check for voltage at pin E of the electrical connector of the battery 2 voltmeter (3PV2), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin E of the battery 2 voltmeter (3PV2) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin K of the electrical connector of the battery 2 voltmeter (3PV2), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the battery 2 voltmeter (3PV2) pin E to the ground terminal.
  • Install the battery 2 voltmeter (3PV2) AMM 24-37-21-400-001.
   (5) FOR [111MX] (CONTROL PANEL-REMOTE,ELT)
     (a) Remove the ELT remote control-panel (111MX) AMM 25-65-18-000-001.
     (b) Do a check for voltage at pin A/K of the electrical connector of the ELT remote control-panel (111MX), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/K of the ELT remote control-panel (111MX) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/L of the electrical connector of the ELT remote control-panel (111MX), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the ELT remote control-panel (111MX) pin A/L to the ground terminal.
  • Install the ELT remote control-panel (111MX) AMM 25-65-18-400-001.
   (6) FOR [940WR]
     (a) Remove the passenger-oxygen cockpit indication-panel (940WR) AMM 35-23-22-000-001.
     (b) Do a check for voltage at pin A/E of the electrical connector of the passenger-oxygen cockpit indication-panel (940WR), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/E of the passenger-oxygen cockpit indication-panel (940WR) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/D of the electrical connector of the passenger-oxygen cockpit indication-panel (940WR), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the passenger-oxygen cockpit indication-panel (940WR) pin A/D to the ground terminal.
  • Install the passenger-oxygen cockpit indication-panel (940WR) AMM 35-23-22-400-001.
   (7) FOR [2RZ]
     (a) Remove the crypto-voice control panel (2RZ) AMM 23-14-12-000-001.
     (b) Do a check for voltage at pin A/20 of the electrical connector of the crypto-voice control panel (2RZ), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between the pin A/20 of the crypto-voice control panel (2RZ) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/24 of the electrical connector of the crypto-voice control panel (2RZ), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the crypto-voice control panel (2RZ) pin A/20 to the ground terminal.
  • Install the crypto-voice control panel (2RZ) AMM 23-14-12-400-001.
   (8) FOR [10QT]
     (a) Remove the cockpit fuel-quantity preselector (10QT) AMM 28-42-21-000-002.
     (b) Do a check of voltage on the pin A/H of the electrical connector of the cockpit fuel-quantity preselector (10QT), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between the pin A/H of the cockpit fuel-quantity preselector (10QT) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/J of the cockpit fuel-quantity preselector (10QT), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the cockpit fuel-quantity preselector (10QT) pin A/H to the ground terminal.
  • Install the cockpit fuel-quantity preselector (10QT) AMM 28-42-21-400-002.
   (9) FOR [1WD] (ENG/APU FIRE PNL)
     (a) Remove the engine/APU fire panel (1WD) AMM 26-12-12-000-001.
     (b) Do a check for voltage at pin E/Z of the electrical connector of the engine/APU fire panel (1WD), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin E/Z of the engine/APU fire panel (1WD) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin E/a of the engine/APU fire panel (1WD), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the engine/APU fire panel (1WD) pin E/Z to the ground terminal.
  • Install the engine/APU fire panel (1WD) AMM 26-12-12-400-001.
   (10) FOR [81QT]
     (a) Remove the cockpit multi-tank indicator (81QT) AMM 28-42-23-000-001.
     (b) Do a check for voltage at pin A/H of the electrical connector of the cockpit multi-tank indicator (81QT), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/H of the cockpit multi-tank indicator (81QT) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/J of the cockpit multi-tank indicator (81QT), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the cockpit multi-tank indicator (81QT) pin A/H to the ground terminal.
  • Install the cockpit multi-tank indicator (81QT) AMM 28-42-23-400-001.
   (11) FOR [1RG3]
     (a) Remove the communication-frequency selector RPM 3 (1RG3) AMM 23-13-13-000-001.
     (b) Do a check for voltage at pin A/T of the electrical connector of the communication-frequency selector RPM 3 (1RG3), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/T of the communication-frequency selector RMP 3 (1RG3) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/U of the communication-frequency selector RPM 3 (1RG3), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the communication-frequency selector RMP 3 (1RG3) to the ground terminal.
  • Install the communication-frequency selector RPM 3 (1RG3) AMM 23-13-13-400-001.
   (12) FOR [2FP] (CDU-ADIRS)
     (a) Remove the control and display unit of the ADIRS (2FP) AMM 34-12-12-000-001.
     (b) Do a check for voltage at pin A/1 of the electrical connector of the control and display unit of the ADIRS (2FP), ASM 331302.
       1 If there is no voltage:
  • Repair the wiring between pin A/1 of the control and display unit of the ADIRS (2FP) and the first terminal block.
       2 If there is voltage:
  • Do a check for a ground signal at pin A/U of the control and display unit of the ADIRS (2FP), ASM 331302.
         a If there is a ground signal:
         b If there is no ground signal:
  • Repair the wiring from the control and display unit of the ADIRS (2FP) pin A/1 to the ground terminal.
  • Install the control and display unit of the ADIRS (2FP) AMM 23-13-13-400-001.
Subtask 33-13-00-810-055-A ** ON A/C NOT FOR ALL
C. The integral lighting of more than one instrument and/or panels connected to the same fuse output does not operate.
F Integral Lighting Controller Overhead 6 LF ** ON A/C NOT FOR ALL
   (1) For fuse output K:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/K of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
   (2) For fuse output J:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/J of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
   (3) For fuse output H:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/H of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
   (4) For fuse output L:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/L of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
   (5) For fuse output N:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/N of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
   (6) For fuse output M:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/M of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
Subtask 33-13-00-810-056-A ** ON A/C NOT FOR ALL
D. The integral lighting of all the panels and/or the instruments does not operate.
   (1) Do a check for 115VAC at pin A/A of the electrical connector of the lighting controller (6LF), ASM 331302.
     (a) If there is no 115VAC:
  • Repair the wiring.
     (b) If there is 115VAC:
  • Do a check for a ground signal at pins A/B and A/C of the electrical connector of the lighting controller (6LF), ASM 331302.
       1 If there is no ground signal:
  • Repair the related wiring.
       2 If there is a ground signal:
  • Do a check for continuity between, ASM 331302:
    . Pin A/F of the electrical connector of the lighting controller (6LF) and pin A/1 of the overhead integral-lighting potentiometer (7LF)
    . Pin A/E of the electrical connector of the lighting controller (6LF) and pin A/2 of the overhead integral-lighting potentiometer (7LF)
    . Pin A/D of the electrical connector of the lighting controller (6LF) and pin A/3 of the overhead integral-lighting potentiometer (7LF).
         a If there is no continuity:
  • Repair the related wiring.
         b If there is continuity:
Subtask 33-13-00-810-055-B ** ON A/C NOT FOR ALL
E. The integral lighting of more than one instrument or panel connected to the same fuse output does not operate
F Integral Lighting Controller Overhead 6 LF ** ON A/C NOT FOR ALL
   (1) For fuse output F:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/F of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
   (2) For fuse output G:
  • Do a check of the fuse.
     (a) If the fuse is not correct:
  • Replace the fuse .
     (b) If the fuse is correct:
  • Do a check for continuity between pin A/G of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
       1 If there is no continuity:
  • Repair the wiring.
       2 If there is continuity:
Subtask 33-13-00-810-056-B ** ON A/C NOT FOR ALL
F. The integral lighting of all the panels and/or the instruments does not operate.
   (1) Do a check for 115VAC at pin A/A of the electrical connector of the lighting controller (6LF), ASM 331302.
     (a) If there is no 115VAC:
  • Repair the wiring .
     (b) If there is 115VAC:
  • Do a check for a ground signal at pins A/B and A/C of the electrical connector of the lighting controller (6LF) ASM 331302.
       1 If there is no ground signal:
  • Repair the related wiring.
       2 If there is a ground signal:
  • Do a check for continuity between, ASM 331302:
    . Pin A/H of the electrical connector of the lighting controller (6LF) and pin A/1 of the overhead integral-lighting potentiometer (7LF)
    . Pin A/J of the electrical connector of the lighting controller (6LF) and pin A/2 of the overhead integral-lighting potentiometer (7LF)
    . Pin A/K of the electrical connector of the lighting controller (6LF) and pin A/3 of the overhead integral-lighting potentiometer (7LF).
         a If there is no continuity:
  • Repair the related wiring.
         b If there is continuity:
Subtask 33-13-00-810-057-A ** ON A/C NOT FOR ALL
G. The integral lighting of more than one instrument connected to the same pulse width modulation output does not operate.
   (1) For pulse width modulation output L:
  • Do a check for continuity between pin A/L of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
     (a) If there is no continuity:
  • Repair the wiring.
     (b) If there is continuity:
  • Do a check for a ground signal at pin A/Y of the electrical connector of the lighting controller (6LF), ASM 331302.
       1 If there is no ground signal:
  • Repair the wiring from the lighting controller (6LF) pin A/Y to the ground terminal.
       2 If there is a ground signal:
   (2) For pulse width modulation output M:
  • Do a check for continuity between pin A/M of the electrical connector of the lighting controller (6LF) and the first terminal block, ASM 331302.
     (a) If there is no continuity:
  • Repair the wiring.
     (b) If there is continuity:
  • Do a check for a ground signal at pin A/Z of the electrical connector of the lighting controller (6LF), ASM 331302.
       1 If there is no ground signal:
  • Repair the wiring from the lighting controller (6LF) pin A/Z to the ground terminal.
       2 If there is a ground signal:
Subtask 33-13-00-710-053-A
H. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:31:53 UTC
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