(2) If the lower section of the F/O AUTO LAND warning light flashes:

 - replace the FWC-2 (1WW2) (Ref. AMM TASK 31-53-34-000-001) and (Ref. AMM TASK 31-53-34-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring from FWC2 (1WW2) pin AE/1B to the first terminal block (Ref. ASM 31-52/06).
 C. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞31-53-00∞∞∞∞∞∞∞∞∞∞Page A243
 Aug 01/05R
 CES  Failure of the Captain Loud Speaker

 1. Possible Causes
_______________
 - AUDIO MIXING (14WW)

 - FWC-1 (1WW1)

 - FWC-2 (1WW2)

 - LOUD SPEAKER-CAPT (7WW)

 - wiring

 - C/B - CAPT/LOUD/SPKR (5WW)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 23-71-00-710-001 Operational Test of the CVR and the CVR Channel
 Recording AMM 31-50-00-710-002 Operational Test of the Flight Warning Computer (FWC) AMM 31-53-21-000-001 Removal of the Loudspeakers (7WW,8WW) AMM 31-53-21-400-001 Installation of the Loudspeakers (7WW,8WW) AMM 31-53-33-000-001 Removal of the Audio Mixing Box (15WW) AMM 31-53-33-400-001 Installation of the Audio Mixing Box (15WW) AMM 31-53-34-000-001 Removal of the Flight Warning Computer (FWC)
 (1WW1,1WW2) AMM 31-53-34-400-001 Installation of the Flight Warning Computer (FWC)
 (1WW1,1WW2) AMM 34-43-00-740-001 BITE Test of the TCAS AMM 34-48-00-710-001 Operational Test of GPWS Ground Self-test Function ASM 31-51/01 ASM 31-52/04
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the Flight Warning Computer (FWC) (Ref. AMM TASK 31-50-00-710-002) if the fault causes inhibition of all the aural warnings.

 (2) Do the operational test of the CVR and the CVR channel recording (Ref. AMM TASK 23-71-00-710-001) only if the fault causes inhibition of the audio signal related to the CVR.

 (3) Do the operational test of GPWS ground self-test function (Ref. AMM TASK 34-48-00-710-001) only if the fault causes inhibition of the audio signal related to the GPWS.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞31-53-00∞∞∞∞∞∞∞∞∞∞Page A244
 Aug 01/05R CES

 (4) Do the BITE test of the TCAS (Ref. AMM TASK 34-43-00-740-001) only if the fault causes inhibition of the audio signal related to the TCAS.
 4. Fault Isolation
_______________
 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU CAPT/LOUD/SPKR 5WW F10 121VU AUDIO MIXING 14WW K03
 B. If the fault causes inhibition of all the aural warnings:
 - do a check of the status of the circuit breaker (5WW).

 - do a check of the status of the circuit breaker (14WW).

 (1) if the circuit breaker (14WW) is closed:
 - do a check for 28VDC at pin A/L of the audio mixing box (15WW) (Ref. ASM 31-51/01):
 (a) if there is 28VDC:

 - replace the audio mixing box (15WW) (Ref. AMM TASK 31-53-33-000-001) and (Ref. AMM TASK 31-53-33-400-001).

 (b) if there is no 28VDC:

 - do a check for 28VDC at the circuit breaker (14WW):
 1 if there is 28VDC:
_

 - do a check and repair the wiring from the circuit breaker (14WW) to the audio mixing box (15WW).
 2 if there is no 28VDC:
_

 - replace AUDIO MIXING (14WW).
 (2) if the circuit breaker (14WW) is open:
 - close the circuit breaker (14WW).
 (a) if the circuit breaker trips:
 - replace the AUDIO MIXING (14WW).
 1 if the circuit breaker trips again
_

 - replace the audio mixing box (15WW) (Ref. AMM TASK 31-53-33-000-001) and (Ref. AMM TASK 31-53-33-400-001).
 (3) If the circuit breaker (5WW) is closed:
 - do a check for 28VDC at pin A/A of the loud speaker (7WW) (Ref. ASM 31-51/01).
 (a) If there is 28VDC:
　
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