TASK 33-26-00-810-803
Lavatory Signs - The Toilet Occupied Symbol in the Cockpit (48VU) does not come on
1. Possible Causes
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- LIGHT-OCCUPIED (6WJ)
- LAMP
- RELAY-OCCUPIED (18LP)
- WIRING
- CB (1WJ)
- SWITCH-LAVATORY OCCUPIED (2WJ)
- RELAY-OCCUPIED (18LP),
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 33-26-00-710-001 Operational Test of the Lavatory Lighted Signs WJ
ASM 33-26/01
3. Fault Confirmation
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A. Do the operational test of the Lavatory Lighted Signs (Ref. AMM TASK 33-26-00-710-001).
4. Fault Isolation
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A. If the test shows that the LIGHT-OCCUPIED (6WJ) does not come on:
NOTE : Be sure that the FWD lavtory door is closed and engaged.
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- do a check for 28 VDC at the lamps (Ref. ASM 33-26/01).
(1) If there is 28 VDC:
- replace the LAMP
(2) If there is no 28 VDC:
- replace the RELAY-OCCUPIED (18LP)
(a) If the fault continues:
- do a check and repair the WIRING between:
CB (1WJ) and SWITCH-LAVATORY OCCUPIED (2WJ)pin C, SWITCH-LAVATORY OCCUPIED (2WJ) pin NO and RELAY-OCCUPIED (18LP) pin 21
「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 207
Feb 01/98 CES
RELAY-OCCUPIED (18LP), pin 45 and ground,
RELAY-OCCUPIED (18LP), pin 10 and LIGHT-OCCUPIED (6WJ) pin 7,
(Ref. ASM 33-26/01)
B. Do the test as given in the Para. 3. A.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
LAVATORY LIGHTED SIGNS - TASK SUPPORTING DATA
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1. General
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**ON A/C 001-049, 051-099, 101-105, 201-210,
(Ref. Fig. 301)
**ON A/C 106-149, 151-199, 211-299,
(Ref. Fig. 301A)
**ON A/C 301-399,
(Ref. Fig. 301B) R **ON A/C 401-499,
R (Ref. Fig. 301C) **ON A/C ALL
The lavatory occupied-signs show the position of the lavatories and if they are occupied or not.
Block Diagram - Lavatory Lighted Signs Figure 301 (SHEET 1)
「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 : 001-049, 051-099, 101-105, 201-210, ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 302
May 01/05 CES
Block Diagram - Lavatory Lighted Signs Figure 301 (SHEET 2)
「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 : 001-049, 051-099, 101-105, 201-210, ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 303
May 01/05 CES
Block Diagram - Lavatory Lighted Signs
Figure 301A (SHEET 1)
「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 : 106-149, 151-199, 211-299, ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 304
May 01/05 CES
Block Diagram - Lavatory Lighted Signs
Figure 301A (SHEET 2)
「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 : 106-149, 151-199, 211-299, ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 305
May 01/05 CESR Block Diagram - Lavatory Lighted Signs R Figure 301B (SHEET 1)
「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 : 301-399, ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 306
Aug 01/04 CESR Block Diagram - Lavatory Lighted Signs R Figure 301B (SHEET 2)
「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 : 301-399, ∞∞33-26-00∞∞∞∞∞∞∞∞∞∞Page 307
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