「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 : 401-499, ∞∞33-25-00∞∞∞∞∞∞∞∞∞∞Page 305
 Aug 01/05 CES

 LAVATORY LIGHTED SIGNS - FAULT ISOLATION PROCEDURES
___________________________________________________
 TASK 33-26-00-810-801
 Lavatory Signs - One Lamp in the Lavatory Occupied Sign does not come on
 1. Possible Causes
_______________
 - SIGN-LAVATORY OCCUPIED (3WJ)

 - SIGN-LAVATORY OCCUPIED (13WJ)

 - LAMP

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 33-26-00-710-001 Operational Test of the Lavatory Lighted Signs WJ
 AMM 33-26-23-000-001 Removal of the Lavatory Occupied Signs (WJ)
 AMM 33-26-23-400-001 Installation of the Lavatory Occupied Signs (WJ)

 3. Fault Confirmation
__________________
 A. Do the operational test of the lavatory lighted signs (Ref. AMM TASK 33-26-00-710-001).
 4. Fault Isolation
_______________
R
R A. If the test gives a maintenance message, do the trouble shooting R procedure related to the maintenance message.
 B. If the test shows that one LAMP in the FWD SIGN-LAVATORY OCCUPIED (3WJ) does not come on:
 - replace the related LAMP.
 (1) If the fault continues:
 - replace the SIGN-LAVATORY OCCUPIED (3WJ) (Ref. AMM TASK 33-26-23-000-001) and (Ref. AMM TASK 33-26-23-400-001).
 C. If the test shows that one LAMP in the AFT SIGN-LAVATORY OCCUPIED (13WJ) does not come on:
 - replace the related LAMP.
 (1) If the fault continues:
 - replace the SIGN-LAVATORY OCCUPIED (13WJ) (Ref. AMM TASK 33-26-23-000-001) and (Ref. AMM TASK 33-26-23-400-001).
 「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 ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 201
 May 01/05 CES D. Do the test given in paragraph 3.A.

 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 「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 ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 202
 May 01/05R
 CES

 TASK 33-26-00-810-802

 Lavatory Signs - The Occupied or Unoccupied Symbol in the Lavatory Lighted Sign does not come on
 1. Possible Causes
_______________
 - SIGN-LAVATORY OCCUPIED (3WJ)

 - SIGN-LAVATORY OCCUPIED (13WJ)

 - LAMPS

 - SWITCH-LAVATORY OCCUPIED (2WJ)

 - WIRING

 - CB (1WJ)

 - SWITCH-LAVATORY OCCUPIED (7WJ)

 - SWITCH-LAVATORY OCCUPIED (9WJ)

 - RELAY-LAVATORY OCCUPIED (5WJ)

 - RELAY-LAVATORY OCCUPIED (8WJ)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 33-26-00-710-001 Operational Test of the Lavatory Lighted Signs WJ
 AMM 33-26-11-000-001 Removal of the Lavatory Door Microswitch (WJ)
 AMM 33-26-11-400-001 Installation of the Lavatory Door Microswitch (WJ)
 AMM 33-26-23-000-001 Removal of the Lavatory Occupied Signs (WJ)
 AMM 33-26-23-400-001 Installation of the Lavatory Occupied Signs (WJ)
 ASM 33-26/01
 ASM 33-26/01

 3. Fault Confirmation
__________________
 A. Do the operational test of the Lavatory Lighted Signs (Ref. AMM TASK 33-26-00-710-001).
 4. Fault Isolation
_______________
 A. If the test shows that no LAMPS in the red occupied pictorial symbol of the FWD SIGN-LAVATORY OCCUPIED (3WJ) come on:
 - make sure that the FWD lavatory door is closed and locked,

 - do a check for 28 VDC at the LAMPS (Ref. ASM 33-26/01).

 (1) If there is 28 VDC:
 - replace the SIGN-LAVATORY OCCUPIED (3WJ) (Ref. AMM TASK 33-26-23-000-001) and (Ref. AMM TASK 33-26-23-400-001).
 「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 ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 203
　
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