B. If the circuit breaker (5SQ1) is closed, and if the BITE test is OK:
 - do a system test of the weather radar 1 (Ref. AMM TASK 34-41-00-730-001): If the system test is OK, no maintenance action is necessary. If the system test confirms the weather radar fault, replace the wave guide switch.
 C. If the circuit breaker (5SQ1) is closed and if the BITE test is not possible
 - do a check for 115VAC at pin AC/2 of the weather radar transceiver 1.
 (1) If there is no 115VAC:

 - do a check of the wiring of the 115VAC signal from circuit breaker (5SQ1) to weather radar transceiver 1 (1SQ1) (Ref. ASM 34-41/01).
 (a) If there is no continuity:

 - repair the above wiring.

 (b) If there is continuity:

 - replace the C/B-COM NAV/RADAR/1 (5SQ1).

 (2) If there is 115VAC:

 - do a check of the wiring of the ground signal at weather radar transceiver 1 pin AC/7.
 (a) If there is no continuity:
 - repair the above wiring.
 D. If the circuit breaker (5SQ1) is open:
 - close this circuit breaker.
 (1) If the circuit breaker (5SQ1) trips:
 - remove the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004).

 - close the circuit breaker (5SQ1).

 (a) If this circuit breaker stays closed:
 - install the weather radar transceiver 1 (Ref. AMM TASK 34-41-33-400-003)
 1 If the circuit breaker trips again:
_
 - replace the weather radar transceiver 1 (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
 (b) If this circuit breaker trips again:
 - do a check for a short to ground at the wiring between the circuit breaker (5SQ1) and the weather radar transceiver 1 (1SQ1). (Ref. ASM 34-41/01).
 1 If there is a short to ground:
_ - repair the above wiring.
 「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 ∞∞34-41-00∞∞∞∞∞∞∞∞∞∞Page 212
 May 01/05R CES

 2_ If there is no short to ground:
 - replace the C/B-COM NAV/RADAR/1.
 3_ Install the weather radar transceiver 1

 (Ref. AMM TASK 34-41-33-400-003).
 E. 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 ∞∞34-41-00∞∞∞∞∞∞∞∞∞∞Page 213
 May 01/05R
 CES R **ON A/C 051-099,

R TASK 34-41-00-810-803 R Failure of the Weather Radar Transceiver 2 R 1. Possible Causes
_______________
R - XCVR-WEATHER RADAR, 2 (1SQ2)
R - short to ground at the wiring between the circuit breaker (5SQ2) and the
R weather radar transceiver 2 (1SQ2).
R - C/B-COM NAV/RADAR/2

R 2. Job Set-up Information

______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
__________________
R R R R R  AMM 34-41-00-740-002 AMM 34-41-33-000-004 AMM 34-41-33-400-003 ASM 34-41/01  BITE Test of the Weather Radar Removal of the Weather Radar Transceiver (1SQ1, 1SQ2) Installation of the Weather Radar Transceiver (1SQ1, 1SQ2) 
R  3. Fault Confirmation

R A. Make sure that this(these) circuit breaker(s) is(are) closed:

R -------------------------------------------------------------------------------R PANEL DESIGNATION IDENT. LOCATION
R -------------------------------------------------------------------------------R 121VU COM NAV/RADAR/2 5SQ2 K14

R B. Test

R (1) If the circuit breaker (5SQ2) trips, refer to Para. 4. C. of this
R trouble shooting procedure.

R (2) Do the BITE test of the weather radar (Ref. AMM TASK 34-41-00-740-R 002).
R - If the BITE test is not possible, refer to Para. 4. B. of this
R trouble shooting procedure.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 051-099, ∞∞34-41-00∞∞∞∞∞∞∞∞∞∞Page 214
 May 01/05 CESR 4. Fault Isolation

_______________
R A. If the circuit breaker (5SQ2) is closed, and if the BITE test gives the
R maintenance message WXR2 (1SQ2):
　
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