1. Possible Causes
_______________

 - SEAT-CAPTAIN (3MS)

 - SEAT-F/O (4MS)

 - SW-CONSOLE/FLOOR (15LE)

 - wiring from the Captain seat (3MS) to the switch (15LE)

 - wiring from the Captain Seat (3MS) to the ground

 - SW-CONSOLE/FLOOR (16LE)

 - wiring from the F/O seat (4MS) to the switch (16LE)

 - wiring from the F/O seat (4MS) to the ground

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 25-11-51-000-001 Removal of the Captain/First Officer Seat (3MS, 4MS) AMM 25-11-51-400-001 Installation of the Captain/First Officer Seat (3MS,
 4MS) AMM 33-12-00-710-001 Operational Test of the General Illumination ASM 25-11/01 ASM 33-12/01
 3. Fault Confirmation
__________________
 A. Test

 (1) Do the operational test of the general illumination (Ref. AMM TASK 33-12-00-710-001).
 NOTE : Do the test of the console and the briefcase lights only.
____

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 Aug 01/05R
 CES

 4. Fault Isolation
_______________

 A. If during the operational test:
 (1) A bulb is inoperative:

 - replace the bulb.

 (2) The Captain floor lighting is inoperative:

 - disconnect the plug 1197VC and make sure that there is 28VDC at pins F and G (Ref. ASM 25-11/01).
 (a) If there is 28VDC at pins F and G:

 - replace the SEAT-CAPTAIN (3MS) (Ref. AMM TASK 25-11-51-000-001) and (Ref. AMM TASK 25-11-51-400-001).

 (b) If there is no 28VDC at pin F:

 - replace the SW-CONSOLE/FLOOR (15LE).
 1 If the fault continues:
_

 - do a check and repair the wiring from the Captain seat (3MS) to the switch (15LE) pins 1B, 1C, 2C and 3B (Ref. ASM 33-12/01).
 (c) If there is no ground at pin G:
 - do a check and repair the wiring from the Captain Seat (3MS) to the ground (Ref. ASM 33-12/01).
 (3) The First Officer floor lighting is inoperative:
 - disconnect the plug 1198VC and make sure that there is 28VDC at pins F and G.
 (a) If there is 28VDC at pins F and G:

 - replace the SEAT-F/O (4MS) (Ref. AMM TASK 25-11-51-000-001) and (Ref. AMM TASK 25-11-51-400-001).

 (b) If there is no 28VDC at pin F:

 - replace the SW-CONSOLE/FLOOR (16LE).
 1 If the fault continues:
_

 - do a check and repair the wiring from the F/O seat (4MS) to the switch (16LE) pins 1B, 1C, 2C and 3B (Ref. ASM 33-12/01).
 (c) If there is no ground at pin G:
 - do a check and repair the wiring from the F/O seat (4MS) to the ground (Ref. ASM 33-12/01).
 B. Do the test given in Para. 3.
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 Aug 01/05 CES

 PASSENGER COMPARTMENT SEATS - FAULT ISOLATION PROCEDURES
________________________________________________________
 TASK 25-21-00-810-801

 The ON lamp of the PED switch does not come on
 1. Possible Causes
_______________
 - PED (53HP)

 - 56HP

 - lamp

 - Aircraft wiring

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific 1 MULTIMETER - STANDARD
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
ASM 25-21/00
 TSM 25-21-00 P.Block 301 PASSENGER COMPARTMENT SEATS

 3. Fault Confirmation
__________________

 A. Push the PED POWER switch (56HP) to ON (Ref. TSM 25-21-00 P.Block 301).
 4. Fault Isolation
_______________
　
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