A. Maintenance Action
 (1) Do the operational test of the galley supply (Ref. AMM TASK 24-56-00-710-001).
 (a) If the test is not OK:

 - Do the fault isolation procedure of the galley supply (Ref. TASK 24-56-00-810-801).

 (b) If the test is OK:

 - Do the Bite Test of the Heated Floor Panel System (Ref. AMM TASK 25-27-00-740-001).
 4. Fault Isolation
_______________

 A. If the test indicators on all control units do not come on:
 - Replace the RELAY-GALLEY PWR SPLY (6MC) (Ref. AMM TASK 24-56-55-000-002) and (Ref. AMM TASK 24-56-55-400-002).
 B. Do the test given in Para. 3.A.(1)(b)
 一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一 EFF : 301-399, ∞∞25-27-00∞∞∞∞∞∞∞∞∞∞Page 203
 May 01/04 CES EQUIP/FURNIS - DOOR AREA HEATING - FWD EMER EXIT - All heated floor panels are INOP

 1. Possible Causes
_______________

 - DOOR AREA HTG PANELS/DOOR 2/HEATER (1DS)

 - RELAY-GALLEY PWR SPLY (6MC)

 - DOOR AREA HTG PANELS/DOOR 2/CTL (3DS)

 - CONTROL UNIT-DOOR AREA HEATING (4DS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-56-55-000-002 Removal of the Contactor Located in the Panel 200VU AMM 24-56-55-400-002 Installation of the Contactor Located in the Panel
 200VU AMM 25-27-00-740-001 Bite Test of the Heated Floor Panel System. AMM 25-27-34-000-001 Removal of the Control Unit 4DS, 14DS AMM 25-27-34-400-001 Installation of the Control Unit 4DS, 14DS ASM 25-27/01 ASM 25-27/02
 3. Fault Confirmation
__________________

 A. Do the Bite Test of the Heated Floor Panel System (Ref. AMM TASK 25-27-00-740-001).
 4. Fault Isolation
_______________

 A. If the test indicators on the control unit 4DS do not come on:
 - Do a check for 115 VAC on the electrical connector 4DS-A, pin 14.
 (1) If there is no 115 VAC:
 - Do a check of the aircraft wiring between the electrical connector 4DS-A, pin 14 and the circuit breaker 1DS, pin 2 (Ref. ASM 25-27/01) or (Ref. ASM 25-27/02).
 (a) If there is continuity:

 - Replace the circuit breaker DOOR AREA HTG PANELS/DOOR 2/HEATER (1DS).

 (b) If there is no continuity:

 - Repair the aircraft wiring (Ref. ASM 25-27/01) or (Ref. ASM 25-27/02).
 一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一 EFF : 301-399, ∞∞25-27-00∞∞∞∞∞∞∞∞∞∞Page 204
 May 01/04 CES (2) If there is 115 VAC:

 - Do a check for 28 VDC on the electrical connector 4DS-A, pin 16.
 (a) If there is no 28 VDC:
 - Do a check of the aircraft wiring from the electrcal connector 4DS-A, pin 16 to the circuit breaker 3DS, pin 2 (Ref. ASM 25-27/01) or (Ref. ASM 25-27/02).
 1_ If there is no continuity:
 - Replace the RELAY-GALLEY PWR SPLY (6MC) (Ref. AMM TASK 24-
56-55-000-002) and (Ref. AMM TASK 24-56-55-400-002).

 a If the fault continues:
_

 - Repair the aircraft wiring (Ref. ASM 25-27/01) and (Ref. ASM 25-27/02).
 2 If there is continuity:
_

 - Replace the circuit breaker DOOR AREA HTG PANELS/DOOR 2/CTL (3DS).
 (3) If there is 28 VDC:
 - Replace the CONTROL UNIT-DOOR AREA HEATING (4DS) (Ref. AMM TASK 25-27-34-000-001) and (Ref. AMM TASK 25-27-34-400-001).
 B. Do the test given in Para. 3.A.

 EQUIP/FURNIS - DOOR AREA HEATING - AFT EMER EXIT - All heated floor panels are INOP
 1. Possible Causes
_______________

 - DOOR AREA HTG PANELS/DOOR 3/HEATER (11DS)

 - RELAY-GALLEY PWR SPLY (6MC)

 - DOOR AREA HTG PANELS/DOOR 3/CTL (13DS)

 - CONTROL UNIT-DOOR AREA HEATING (14DS)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-56-55-000-002 Removal of the Contactor Located in the Panel 200VU AMM 24-56-55-400-002 Installation of the Contactor Located in the Panel
 200VU AMM 25-27-00-740-001 Bite Test of the Heated Floor Panel System. AMM 25-27-34-000-001 Removal of the Control Unit 4DS, 14DS AMM 25-27-34-400-001 Installation of the Control Unit 4DS, 14DS ASM 25-27/01 ASM 25-27/02
　
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