W DOC AIRBUS | TSM A320F

Reading Light - Fault on the Printed Circuit Board (PCB) of the Reading Lights

TASK 33-25-00-810-802-A
Reading Light - Fault on the Printed Circuit Board (PCB) of the Reading Lights

1. Possible Causes
  • READING-LIGHT POWER UNIT
  • PCB 2038VUA
  • READING LIGHT(S)
  • PASSENGER INTERFACE AND SUPPLY ADAPTER (PISA)
  • wiring
  • DEU-A
  • DEU A 200RH
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
ASM 237307
ASM 237308
ASM 237309
ASM 237310
ASM 237311
ASM 237312
ASM 237313
ASM 237314
AMM 23-73-38-000-001
Removal of the Power Unit for the Passenger Reading Light
AMM 23-73-38-400-001
Installation of the Power Unit for the Passenger Reading Light
AMM 23-73-41-000-002
Removal of the Passenger Interface and Supply Adapter
AMM 23-73-41-400-002
Installation of the Passenger Interface and Supply Adapter
AMM 23-73-46-000-001
Removal of the Decoder/Encoder Unit A (200RH)
AMM 23-73-46-400-001
Installation of the Decoder/Encoder Unit A (200RH)
AMM 23-73-49-000-001
Removal of the Printed Circuit Board
AMM 23-73-49-400-001
Installation of the Printed Circuit Board
ASM 237353
ASM 237354
ASM 237355
AMM 23-73-64-000-001
Removal of the Reading Light
AMM 23-73-64-400-001
Installation of the Reading Light
AMM 33-25-00-710-001
Operational Test of the Passenger Reading Light System
ASM 332501
ASM 332502
ASM 332503
AMM 33-27-00-740-001
Bite Test of the Cabin Attendant Work-Light through MCDU
3. Fault Confirmation
Subtask 33-25-00-710-051-A
A. Do the BITE test of the passenger reading lights with the MCDU AMM 33-27-00-740-001.
Subtask 33-25-00-710-057-A
B. Do the operational test of the passenger reading-light system AMM 33-25-00-710-001.
4. Fault Isolation
Subtask 33-25-00-810-065-A
A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
Subtask 33-25-00-810-051-A ** ON A/C NOT FOR ALL
B. If the operational test gives the maintenance message RDG LIGHT PCB XX L, R (XX seats) and one or more lamps do not come on:
   (1) If the fault continues:
     (a) If the fault continues:
Subtask 33-25-00-810-061-A ** ON A/C NOT FOR ALL
C. If the operational test gives the maintenance message RDG LIGHT PCB XX L, R and all the reading lights come on:
   (1) If the fault continues:
  • Do a check and repair the wiring between the related:
    READING-LIGHT POWER UNIT conn. A/J and DEU-A conn. C/36 (Page 101)
    READING-LIGHT POWER UNIT conn. A/J and DEU-A conn. C/43 (Page 102)
    READING-LIGHT POWER UNIT conn. A/J and DEU-A conn. C/29 (Page 103)
    READING-LIGHT POWER UNIT conn. A/B and GND ASM 237313 and ASM 332501.
Subtask 33-25-00-810-051-E ** ON A/C NOT FOR ALL
D. If the test gives the maintenance message
RDNG LT PCB <APPL. AREA> SRXX L, R (XX seat row) or
RDNG LT PCB <APPL. AREA> SRXX L, R / DEU A (200RHYY) (XX seat row, YY FIN) and/or
one or more reading lights in the related seat row do not come on:
   (1) If the fault continues:
     (a) If the fault continues:
       1 If the fault continues:
  • Do a check and repair the wiring between the related:
    PISA connector P1/14 and C/B 1LW or 2LW or 3LW or 4LW or 5LW or 6LW,
    PISA connector P1/7 and GND
    ASM 332501, ASM 332502 and
    ASM 332503.
Subtask 33-25-00-810-061-E ** ON A/C NOT FOR ALL
E. If the test gives the maintenance message
RDNG LT PCB <APPL. AREA> SRXX L, R (XX seat row) or
RDNG LT PCB <APPL. AREA> SRXX L, R / DEU A (200RHYY) (XX seat row, YY FIN) and
all the reading lights in the related seat row come on:
   (1) If the fault continues:
     (a) If the fault continues:
Subtask 33-25-00-810-051-F ** ON A/C NOT FOR ALL
F. If the test gives the maintenance message
RDNG LT PCB <APPL. AREA> SRXX L, R (XX seat row) or
RDNG LT PCB <APPL. AREA> SRXX L, R / DEU A (200RHYY) (XX seat row, YY FIN) and/or
one or more reading lights in the related seat row do not come on:
   (1) If the fault continues:
     (a) If the fault continues:
       1 If the fault continues:
  • Do a check and repair the wiring between the related:
    PISA connector P1/14 and C/B 1LW or 2LW or 3LW or 4LW or 5LW or 6LW,
    PISA connector P1/7 and GND
    ASM 332501, ASM 332502 and
    ASM 332503.
Subtask 33-25-00-810-061-F ** ON A/C NOT FOR ALL
G. If the test gives the maintenance message
RDNG LT PCB <APPL. AREA> SRXX L, R (XX seat row) or
RDNG LT PCB <APPL. AREA> SRXX L, R / DEU A (200RHYY) (XX seat row, YY FIN) and
all the reading lights in the related seat row come on:
   (1) If the fault continues:
     (a) If the fault continues:
Subtask 33-25-00-710-053-A
H. Do the test as given in the Para. 3.A .
5. Close-up
Subtask 33-25-00-860-052-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:31:55 UTC
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