- replace the RHEOSTAT-FLOOD LT/PED (28LE) (Ref. IPC 331208).
(2) The center pedestal light (27LE) does not come on:
- remove the LT-CENTER PEDESTAL (27LE) (Ref. AMM TASK 33-12-14-000-002)
- make sure that there is 28VDC at the lamp socket.
(a) If there is 28VDC:
- replace the defective lamp (Ref. AMM TASK 33-12-14-400-002).
「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 ∞∞33-12-00∞∞∞∞∞∞∞∞∞∞Page 217
Feb 01/98 CES (b) If there is no 28VDC:
- do a check for continuity between pin A/1 and pin A/2 of the pedestal flood light rheostat (28LE).
1 If there is no continuity:
_ - replace the RHEOSTAT-FLOOD LT/PED (28LE) (Ref. IPC 331208).
2 If there is continuity:
_
- do a check for 28VDC at pin A/1 of the pedestal flood light rheostat (28LE) (Ref. ASM 33-12/02).
a If there is no 28VDC:
_
- do a check and repair the wiring between the pedestal flood light rheostat (28LE) pin A/1 and the first terminal block (Ref. ASM 33-12/02).
b If there is 28VDC:
_
- do a check and repair the wiring between the center pedestal light (27LE): . and the pedestal flood light rheostat (28LE) . and the ground terminal (Ref. ASM 33-12/02).
B. Do the test given in Para. 3.
TASK 33-12-00-810-816
Failure at the Main and Center Instrument Panel Lights
1. Possible Causes
_______________
- LT-MAIN INSTRUMENT PNL, F/O (36LE)
- LT-MAIN INSTRUMENT PNL, CAPT (37LE)
- LT-MAIN INSTRUMENT PNL, CENTER (38LE)
- wiring
- RHEOSTAT-FLOOD LT/MAIN PNL (35LE)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
IPC 331208
AMM 33-12-00-710-001 Operational Test of the General Illumination
AMM 33-12-13-000-001 Removal of the Main Instrument-Panel Lights (36LE,
37LE)
AMM 33-12-13-400-001 Installation of the Main Instrument-Panel Light
(36LE, 37LE)
ASM 33-12/02
3. Fault Confirmation
__________________
A. Test Do the operational test of the general illumination (Ref. AMM TASK 33-12-00-710-001).
NOTE : Do this test for the instrument lighting, the supplementary
____ reading lights, the map table lights and the center pedestal light only.
4. Fault Isolation
_______________
A. If, during the operational test:
(1) One main instrument-panel light (center, Captain or First Officer) does not come on:
- remove the defective bulb of the LT-MAIN INSTRUMENT PNL, F/O (36LE) LT-MAIN INSTRUMENT PNL, CAPT (37LE) or LT-MAIN INSTRUMENT PNL, CENTER (38LE) (Ref. AMM TASK 33-12-13-000-001).
- make sure that there is 28VDC at the bulb socket.
(a) If there is 28VDC:
- replace the defective bulb (Ref. AMM TASK 33-12-13-400-001).
「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 ∞∞33-12-00∞∞∞∞∞∞∞∞∞∞Page 219
Feb 01/98 CES (b) If there is no 28VDC:
- do a check and repair the wiring related to the defective bulb (Ref. ASM 33-12/02).
(2) The FLOOD LT/MAIN PNL rheostat (35LE) is inoperative:
- replace the RHEOSTAT-FLOOD LT/MAIN PNL (35LE) (Ref. IPC 331208).
(3) The center main instrument panel lights do not come on:
- do a check and repair the wiring between the center main instrument-panel light (38LE) and the ground terminal (Ref. ASM 33-12/02).
(4) One of the main instrument-panel lights on the First Officer side (36LE) and one of the center main instrument-panel lights (38LE) do not come on:
- do a check for continuity between pin A/1 and pin A/2 of the FLOOD LT/MAIN PNL rheostat (35LE).
(a) If there is no continuity:
- replace the RHEOSTAT-FLOOD LT/MAIN PNL (35LE) (Ref. IPC 331208).
(b) If there is continuity:
- do a check for 28VDC at pin A/1 of the FLOOD LT/MAIN PNL rheostat (35LE) (Ref. ASM 33-12/02).
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