FWD - AFT CARGO COMPARTMENT LIGHTING - FAULT ISOLATION PROCEDURES
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TASK 33-34-00-810-801
Cargo Comp. Lighting - One Light in the FWD or AFT Cargo Compartment does not
come on
1. Possible Causes
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- fluorescent tube
- BALLAST UNIT
- FWD CARGO COMPT SW 6LU
- wiring
- AFT CARGO COMPT SW 8LU
- AFT CARGO COMPT SW 18LU
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 33-34-00-710-001 Operational Test of the FWD and AFT Cargo Compartment
Lighting
AMM 33-34-11-000-001 Removal of the Ballast Unit and Lampholder
AMM 33-34-11-400-001 Installation of the Ballast Unit and Lampholder
ASM 33-34/01
3. Fault Confirmation
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A. Do the operational test of the FWD and AFT Cargo-Compartment Lighting (Ref. AMM TASK 33-34-00-710-001).
4. Fault Isolation
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A. If the operational test shows that a light in the FWD Cargo Compartment does not come on:
- replace the related fluorescent tube.
(1) If the fault continues:
- do a check for 115 VAC at the related BALLAST UNIT connector A/C (Ref. ASM 33-34/01).
(a) If there is approx. 115 VAC:
- replace the related BALLAST UNIT (Ref. AMM TASK 33-34-11-000-001) and (Ref. AMM TASK 33-34-11-400-001).
(b) If there is no 115 VAC:
- do a check of the FWD CARGO COMPT SW 6LU and replace it if necessary.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-34-00∞∞∞∞∞∞∞∞∞∞Page 201
Feb 01/98 CES (2) If the fault continues:
- do a check and repair the wiring between the related BALLAST UNIT connector A/C and CB 1LU (Ref. ASM 33-34/01).
B. If the operational test shows that a light in the AFT Cargo Compartment does not come on:
- replace the related fluorescent tube.
(1) If the fault continues:
- do a check for 115 VAC at the related BALLAST UNIT connector A/C (Ref. ASM 33-34/01).
(a) If there is approx. 115 VAC:
- replace the related BALLAST UNIT (Ref. AMM TASK 33-34-11-000-001) and (Ref. AMM TASK 33-34-11-400-001).
(b) If there is no 115 VAC:
- do a check of the AFT CARGO COMPT SW 8LU and replace it if necessary.
(2) If the fault continues:
- do a check and repair the wiring between the related BALLAST UNIT connector A/C and CB 2LU (Ref. ASM 33-34/01).
C. If the operational test shows that a light in the AFT Cargo Compartment does not come on:
- replace the related fluorescent tube.
(1) If the fault continues:
- do a check for 115 VDC at the related BALLAST UNIT connector A/C (Ref. ASM 33-34/01).
(a) If there is approx. 115 VDC:
- replace the related BALLAST UNIT (Ref. AMM TASK 33-34-11-000-001) and (Ref. AMM TASK 33-34-11-400-001).
(b) If there is no 115 VDC:
- do a check of the AFT CARGO COMPT SW 8LU and replace it if necessary.
(c) If the fault continues:
- do a check of the AFT CARGO COMPT SW 18LU and replace it if necessary.
(2) If the fault continues:
- do a check and repair the wiring between the related BALLAST UNIT connector A/C and CB 2LU (Ref. ASM 33-34/01).
D. Do the test as given in the Para. 3.A .
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-34-00∞∞∞∞∞∞∞∞∞∞Page 202
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