(2) If there is approx. 28 VDC:

 - do a check for a DC GND signal at RELAY 5LY connector A/X2 (Ref. ASM 33-47/01).
 (a) If there is a GND signal:

 - do a check and replace if necessary: RELAY 5LY (Ref. ASM 33-47/01).

 (b) If there is no GND signal:

 - do a check of the wiring between: RELAY 5LY connector A/X2 and SFCC1 21VC connector AE/8D, RELAY 5LY connector A/X2 and SFCC2 22VC connector AE/8D, RELAY 5LY connector A/X2 and LGCIU 5GA2 connector AB/4C (Ref. ASM 33-47/01).
 1 If the fault continues:
_
 - do the Bite Test of the Slat and Flap Control Computers (Ref. AMM TASK 27-51-00-740-002).

 - do the Functional Test of the Normal Extension and Retraction of the Landing Gear (Ref. AMM TASK 32-31-00-720-002).

 C. If the test shows that both LOGO LIGHTS 3LY and LOGO LIGHT 4LY in SWITCH NAV LOGO 3LA position 1 do not come on:
 - make sure that the SWITCH NAV LOGO 3LA is in position 1.

 - do a check for approx. 28 VDC at RELAY 6LA connector A/X1 (Ref. ASM 33-41/01).

 (1) If there is no 28 VDC:
 - do a check of the wiring between:
 RELAY 6LA connector A/X1 and CB 1LA
 (Ref. ASM 33-47/01).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-47-00∞∞∞∞∞∞∞∞∞∞Page 204
 Feb 01/98 CES (a) If the fault continues:

 - do a check and replace if necessary: SWITCH NAV LOGO 3LA, CB 1LA (Ref. ASM 33-41/01).
 (2) If there is approx. 28 VDC:
 - do a check of the wiring between: RELAY 6LA connector A/X2 and GND, RELAY 6LA connector A/D1 and RELAY 5 LY connector A/X1, RELAY 6LA connector A/D2 and CB 2LR (Ref. ASM 33-41/01) and (Ref. ASM 33-47/01).
 (a) If the fault continues:
 - do a check and replace if necessary: RELAY 6LA, CB 2LR (Ref. ASM 33-41/01) and (Ref. ASM 33-47/01).
 D. If the test shows that LOGO LIGHT 3LY and LOGO LIGHT 4LY in SWITCH NAV LOGO 3LA position 2 do not come on:
 - make sure that the SWITCH NAV LOGO 3LA is in position 2.

 - do a check for approx. 28 VDC at RELAY 7LA connector A/X1 (Ref. ASM 33-41/01).

 (1) If there is no 28 VDC:

 - do a check of the wiring between:
 RELAY 7LA connector A/X1 and CB 2LA
 (Ref. ASM 33-41/01).

 (a) If the fault continues:
 - do a check and replace if necessary: SWITCH NAV LOGO 3LA, CB 2LA (Ref. ASM 33-41/01).

 (2) If there is approx. 28 VDC:

 - do a check of the wiring between: RELAY 7LA connector A/X2 and GND, RELAY 7LA connector A/D1 and RELAY 5LY connector A/X1, RELAY 7LA connector A/D2 and CB 2LR (Ref. ASM 33-41/01) and (Ref. ASM 33-47/01).
 (a) If the fault continues:
 - do a check and replace if necessary: RELAY 7LA, CB 2LR (Ref. ASM 33-41/01) and (Ref. ASM 33-47/01).
 E. Do the test as given in the Para. 3. A.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞33-47-00∞∞∞∞∞∞∞∞∞∞Page 205
 Feb 01/98 CES 5. Close-up

________
 A. Put the aircraft back to its initial configuration.

 TASK 33-47-00-810-803

 Logo Lights - One Logo Light does not go off
 1. Possible Causes
_______________
 - LOGO LIGHT PWR SPLY RELAY 5LY

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 33-47-00-710-002 Operational Test of the Logo Lights
 3. Fault Confirmation
__________________
 A. Do the operational test of the logo lights (Ref. AMM TASK 33-47-00-710-002).
 4. Fault Isolation
_______________
 A. If the test shows that the LOGO LIGHT 3LY does not go off:
 - make sure that the NAV LOGO switch is set to the OFF position,
 (1) If the fault continues:
 - replace the LOGO LIGHT PWR SPLY RELAY 5LY.
 B. Do the test as given in the Para. 3. A.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.

 TASK 33-47-00-810-804

 Logo Lights - Both Logo Lights do not go off
 1. Possible Causes
_______________
 - RELAY 5LY

 - RELAY 6LA

 - RELAY 7LA

 2. Job Set-up Information
______________________
 A. Referenced Information
　
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