1. Possible Causes
_______________
 - GPWC (1WZ)

 - wiring of the FCU 2 DATA INPUT bus from the GPWC to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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. Test
 (1) 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:
 FCU (3CA) BUS CP-R/GPWC (1WZ)

 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the FCU 2 DATA INPUT bus from the GPWC to the first terminal block: for pins AA/9C, 9D 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 268
 May 01/05R
 CES  Loss of Weather Radar 1 Input Data

 1. Possible Causes
_______________
 - GPWC (1WZ)

 - XCVR-WEATHER RADAR, 1 (1SQ1)

 - wiring of the RADAR 1 DATA INPUT bus from the weather radar transceiver 1 to the GPWC

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 34-48/02

 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
_______________
 A. If the test gives the maintenance message: WXR1 (1SQ1) BUS HAZARD/GPWC (1WZ)
 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
 (1) If the fault continues:
 - replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
 (a) If the fault continues:
 - do a check and repair the wiring of the RADAR 1 DATA INPUT bus from the weather radar transceiver 1 to the GPWC: from pins AB/5J, 6J to pins AA/8A, 8B (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 269
 May 01/05R CES

 Loss of the Weather Radar 1 Discrete Input of the GPWC
 1. Possible Causes
_______________
 - GPWC (1WZ)

 - CTL UNIT-WEATHER RADAR (3SQ)

 - wiring of the WEATHER RADAR 1 ON/OFF discrete between the CTL UNIT-WEATHER RADAR and the GPWC

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 34-41-12-000-001 Removal of the Weather Radar Control Unit (3SQ)
 AMM 34-41-12-400-001 Installation of the Weather Radar Control Unit (3SQ)
 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. Test
 (1) Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message: WXR1 (1SQ1)/GPWC (1WZ)
　
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