Pushbutton Switch in the Cockpit
 AMM 34-48-00-740-002 BITE Test of the Enhanced GPWC
 AMM 34-48-34-000-001 Removal of the GPWC (1WZ)
 AMM 34-48-34-400-001 Installation of the GPWC (1WZ)
 ASM 34-48/02

 3. Fault Confirmation
__________________
 A. Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
 4. Fault Isolation
_______________
 A. If the BITE test gives the maintenance message: GPWS TERR PB SW (31WZ)/GPWC (1WZ) - on the GPWS section of panel 21VU, make sure that the GPWS/TERR
 pushbutton switch (31WZ) is not pushed (the OFF legend is off)
 - do a check for ground at pin AB/14B of the GPWC (Ref. ASM 34-48/02).
 (1) If there is no ground:
 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
 「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 ∞∞34-48-00∞∞∞∞∞∞∞∞∞∞Page 258
 May 01/03R CES

 (2) If there is ground:
 - replace the P/BSW-GPWS/TERR (31WZ) (Ref. AMM TASK 33-10-00-000-002) and (Ref. AMM TASK 33-10-00-400-002).
 (a) If there is ground:
 - remove the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001)

 - do a check for a ground signal at pin AB/14B of the GPWC.

 1 If there is no ground:
_ - install a new SDAC-1 (Ref. AMM TASK 31-55-34-400-001).
 2 If there is ground:
_
 - install the SDAC-1

 - remove the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001)

 a If there is no ground:
_ - install a new SDAC-2 (Ref. AMM TASK 31-55-34-400-001).
 b If there is ground:
_
 - do a check and repair the wiring of the TERRAIN AWARNESS INHIBIT discrete between the GPWC (1WZ), the GPWS/TERR pushbutton switch (31WZ) and the SDAC-1 and SDAC-2: for pin AB/14B of the GPWC (Ref. ASM 34-48/02).
 B. 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 ∞∞34-48-00∞∞∞∞∞∞∞∞∞∞Page 259
 May 01/03R
 CES  Loss of All Aural Warnings

 1. Possible Causes
_______________
 - GPWC (1WZ)

 - FWC-1 (1WW1)

 - FWC-2 (1WW2)

 - XCVR-WEATHER RADAR, 1 (1SQ1)

 - XCVR-WEATHER RADAR, 2 (1SQ2)

 - wiring between the GPWC and the FWC 1 and FWC 2

 - wiring between the GPWC and the weather radar transceiver

 - wiring between the GPWC and the TCAS computer

 - wiring between the GPWC and the weather radar transceiver 1 and 2

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 34-41-33-000-004 Removal of the Weather Radar Transceiver (1SQ1, 1SQ2) AMM 34-41-33-400-003 Installation of the Weather Radar Transceiver (1SQ1,
 1SQ2)
 AMM 34-48-00-740-002 BITE Test of the Enhanced GPWC
 AMM 34-48-34-000-001 Removal of the GPWC (1WZ)
 AMM 34-48-34-400-001 Installation of the GPWC (1WZ)
 ASM 34-48/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
 4. Fault Isolation
_______________
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 A. If the test gives the maintenance message
 GPWC (1WZ)/FWC1/2 (1WW1/2)/WXR1/2 (1SQ1/2):

 - do a check for a ground signal at pin AB/5D of the GPWC (Ref. ASM 34-48/01).
 「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 ∞∞34-48-00∞∞∞∞∞∞∞∞∞∞Page 260
 Aug 01/05 CES

 (1) If there is no ground signal:

 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001)

 (2) If there is a ground signal:

 - remove the FWC-1 (1WW1) (Ref. AMM TASK 31-53-34-000-001)
 (a) If there is no ground signal:

 - install a new FWC 1 (Ref. AMM TASK 31-53-34-400-001)

 (b) If there is a ground signal:
　
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