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 - POWER SUPPLY UNIT-EMERGENCY
 - POWER SUPPLY UNIT (110WLx) R - INVERTER
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power
R AMM 33-51-37-000-001 Removal of the Inverter Unit
R AMM 33-51-37-400-001 Installation of the Inverter Unit AMM 33-51-38-000-001 Removal of the Emergency Power-Supply Unit (EPSU) AMM 33-51-38-400-001 Installation of the Emergency Power-Supply Unit (EPSU) AMM 33-51-39-000-001 Removal of the Power Supply Unit for the Floor-Proximity Emergency-Escape Path-Marking Light AMM 33-51-39-400-001 Installation of the Power Supply Unit for the Floor-Proximity Emergency-Escape Path-Marking Light ASM 33-51/01 ASM 33-51/04
 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU LIGHTING/EMER LT/CABIN 2WL H06 49VU LIGHTING/EMER LT/CABIN 1WL H05 122VU LIGHTING/CABIN/EMER/LT 3WL V07
 B. Energize the aircraft electrical circuits
 (Ref. AMM TASK 24-41-00-861-002).

 「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 ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 292
 May 01/05 CES

 C. Do this test:

 NOTE : Make sure that all cabin emergency lights have been tested and
____
 operate correctly

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. In the cockpit, on the SIGNS panel 25VU:
 - set the SW-SIGNS/EMER EXIT LT (4WL) switch to the ARM position.
 2. On the circuit breaker panel 49VU: - open the circuit breakers 1WL
and 2WL.
4. Fault Isolation
_______________ In the cabin:
- not all cabin emergency lights comeon.
R **ON A/C 001-049, 051-099, 101-105, 151-158, 201-209,
 A. Maintenance Action
 NOTE : The combination of cabin emergency lights that do not come on
____ shows you the POWER SUPPLY UNIT-EMERGENCY or the Power Supply Unit (PSU) which you must replace.
 (1) If all to one POWER SUPPLY UNIT-EMERGENCY terminal related cabin emergency lights do not come on (Ref. ASM 33-51/01):

 - replace the related EPSU (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001),

 (2) If all to one PSU terminal related cabin emergency lights do not come on (Ref. ASM 33-51/04):

 - replace the related POWER SUPPLY UNIT (110WLx) (Ref. AMM TASK 33-51-39-000-001) and (Ref. AMM TASK 33-51-39-400-001),
R **ON A/C 106-149, 229-299,
R A. Maintenance Action
R NOTE : The combination of cabin emergency lights that do not come on
____ R shows you the POWER SUPPLY UNIT-EMERGENCY or the INVERTER which R you must replace.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : ALL ∞∞33-51-00∞∞∞∞∞∞∞∞∞∞Page 293
 May 01/05 CES

 (1) If all to one POWER SUPPLY UNIT-EMERGENCY terminal related cabin emergency lights do not come on:

 - replace the related POWER SUPPLY UNIT-EMERGENCY (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001) (Ref. ASM 33-51/01).

 (2) If all to one Inverter terminal related cabin emergency lights do not come on

 - replace the related INVERTER (Ref. AMM TASK 33-51-37-000-001) and (Ref. AMM TASK 33-51-37-400-001) (Ref. ASM 33-51/04):
R **ON A/C 159-199, 210-228, 301-399, 401-499,
 A. Maintenance Action
 NOTE : The combination of cabin emergency lights that do not come on
____
 shows you the EPSU which you must replace.

 (1) If all to one POWER SUPPLY UNIT-EMERGENCY terminal related cabin emergency lights do not come on (Ref. ASM 33-51/01):
 - replace the related POWER SUPPLY UNIT-EMERGENCY (Ref. AMM TASK 33-51-38-000-001) and (Ref. AMM TASK 33-51-38-400-001),
 **ON A/C ALL
 B. Do the test given in para. 3.
 5. Close-up
________
 A. De-energize the aircraft electrical circuits
　
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