R **ON A/C 001-003, 051-052,

 Subtask 33-51-38-710-052

 B. Do this test.
 NOTE : The test is the same for all batteries of the emergency

____
 power-supply units.

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
**ON EPSU P/N 3214-5X
 1. On the emergency power-supply  On the emergency power-supply unit:
 unit:
 - push the TEST pushbutton for  - the green LED
 approx. 2 s.  - BATTERY OK,
 - INTERNAL LOADS OK,
 - EXTERNAL LOADS OK
 come on for approx. 1 min, if all
 test loops are completed without
 malfunction.
 **ON EPSU P/N 3214-54-10
 2. On the emergency power-supply  On the emergency power-supply unit:
 unit:
 - push the TEST membrane switch  - the green SYSTEM OK LED comes on for
 for approximately 2 s.  approximately 30 s if all test loops
 are completed without malfunction. 

R 1EFF : 001-003, 051-052, 1 33-51-38Page 428 1 1 May 01/05 1 1 1CES 1

R  **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
 Subtask 33-51-38-710-052-A
 B. Do this test.
 NOTE : The test is the same for all batteries of the emergency
____
 power-supply units.

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the emergency power-supply  On the emergency power-supply unit: unit:
 -push the TEST membrane switch - the green SYSTEM OK LED comes on for
 for approximately 2 s.  approximately 30 s if all test loops are completed without malfunction.
 **ON A/C ALL
 5. Close-up
________

R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 Subtask 33-51-38-410-053-A
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the ceiling panel: FOR 10WL install 221BC at the left FWD passenger/crew door (Ref. TASK 25-23-42-400-001).

 (3)
 Install the lower sidewall panel: FOR 11WL install 241KW at the left emergency exit(s) (Ref. TASK 25-23-44-400-001), FOR 12WL install 242KW at the right emergency exit(s) (Ref. TASK 25-23-44-400-001).

 (4) Engage the emergency oxygen container:
 FOR 13WL
 lift and engage the emergency oxygen container 33WR between the AFT
 passenger/crew doors (Ref. TASK 35-21-41-400-001).
 (5) Remove the stepladder(s). 
R  **ON A/C 301-399, 
R  Subtask 33-51-38-410-053-B 
R  A. Close Access 
R  (1) Make sure that the work area is clean and clear of tool(s) and other 
R  items. 
R  (2) Install the ceiling panel: 
R  FOR 10WL 
R  install 221BC at the left FWD passenger/crew door (Ref. TASK 25-23-
R  42-400-001), 
R  FOR 11WL 
R  install 251KC between the rear emergency exit doors (Ref. TASK 25-23-
R  41-400-001), 
R  FOR 12WL 
R  install 251KC between the rear emergency exit doors (Ref. TASK 25-23-
R  41-400-001), 
R  FOR 14WL 
R  install 231JC between the forward emergency exit doors (Ref. TASK 25-
R  23-41-400-001), 
R  FOR 15WL 
R  install 231JC between the forward emergency exit doors (Ref. TASK 25-
R  23-41-400-001), 
R  (3) Engage the emergency oxygen container: 
R  FOR 13WL 
R  lift and engage the emergency oxygen container 33WR between the AFT 
R  passenger/crew doors (Ref. TASK 35-21-41-400-001). 
R  (4) Remove the stepladder(s).

R **ON A/C ALL

 Subtask 33-51-38-862-052
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 POWER SUPPLY UNIT - FLOOR PROXIMITY EMERGENCY ESCAPE PATH MARKING LIGHT
_______________________________________________________________________ REMOVAL/INSTALLATION
____________________
 TASK 33-51-39-000-001
 Removal of the Power Supply Unit for the Floor-Proximity Emergency-Escape
 Path-Marking Light WARNING : MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE
　
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