. If there is no short to ground:
* replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
R b_ If the fault continues:
R
- replace the C/B-AIR COND AVNCS VENT/CTL (6HQ).
c If the circuit breaker stays closed and the fault
_ continues:
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) (Ref. AMM TASK 21-26-34-400-001).
(b) If there is no 28VDC at pin AA/7C:
- do a check for 28VDC at pin A/D3 of the VENTILATION/BLOWER pushbutton switch (13HQ) (Ref. ASM 21-26/03).
1 If there is 28VDC:
_
- replace the P/BSW-VENTILATION/BLOWER (13HQ).
2 If there is no 28VDC:
_ R - do a check of the wiring between the AEVC (10HQ) pin AA/7C R and the pushbutton switch (13HQ) pin A D1 and wiring between R the pushbutton switch (13HQ) pin A/D3 and the circuit R breaker (5HQ).
R a_ If there is no continuity:R
- repair the related wiring.
R b_ If there is continuity:R
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
「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 ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 206
May 01/05 CES . If the fault continues:
* replace the circuit breaker C/B-AIR COND AVNCS VENT/CTL (5HQ).
(c) If there is no 28VDC at pin AA/1B:
- do a check of the wiring between the AEVC pin AA/1B and the circuit breaker (5HQ).
R 1_ If there is no continuity:
R
- repair the related wiring.
R 2_ If there is continuity:R
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
R a_ If the fault continues:R
- replace the circuit breaker C/B-AIR COND AVNCS VENT/CTL (5HQ).
(2) If the circuit breaker (5HQ) is open:
- close the circuit breaker (5HQ).
(a) If the circuit breaker trips:
- do a check for a short to ground at the wiring between the AEVC pin AA/1B and the circuit breaker (5HQ) and/or the wiring between the AEVC pin AA/7C and the circuit breaker (5HQ) (Ref. ASM 21-26/02).
R 1_ If there is a short to ground:R
- repair the related wiring.
R 2_ If there is no short to ground:R
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and (Ref. AMM TASK 21-26-34-400-001).
R a_ If the fault continues:R
- replace the circuit breaker C/B-AIR COND AVNCS VENT/CTL (5HQ).
(b) If the circuit breaker stays closed and the fault continues:
- replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001) and
(Ref. AMM TASK 21-26-34-400-001). R
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞21-26-00∞∞∞∞∞∞∞∞∞∞Page 207
May 01/05 CES
R (3) Do a check of the status of the circuit breaker (6HQ).
R (a) If the circuit breaker (6HQ) is open: R - close the circuit breaker (6HQ).
R 1_ If the circuit breaker trips:
R - do a check for a short to ground at the wiring between the
R AEVC pin AA/1C and the circuit breaker (6HQ) (Ref. ASM 21-
26/03).
R
R a_ If there is a short to ground:
R - repair the related wiring.
R b_ If there is no short to ground:
R - replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-001)
R and (Ref. AMM TASK 21-26-34-400-001).
R 2_ If the fault continues:
R replace the C/B-AIR COND AVNCS VENT/CTL (6HQ).
R (b) If the circuit breaker (6HQ) is closed:
R - do a check for 28VDC at pin AA/2C and/or pin AA/3D of the AEVC
R (10HQ) (Ref. ASM 21-26/02)
R 1_ If there is 28VDC at pins AA/2C and/or AA/3D:
R - do a check for 28VDC at pin AA/1C of the AEVC (10HQ) (Ref.
R ASM 21-26/03).
R a_ If there is 28VDC:
R - do a check for a ground signal at pin AA/1D of the AEVC
R (10HQ) (Ref. ASM 21-26/01).
R
R . If there is a ground signal:
R * replace the AEVC (10HQ) (Ref. AMM TASK 21-26-34-000-R 001) and (Ref. AMM TASK 21-26-34-400-001).
R
R . If there is no ground signal:
R * repair the wiring between the AEVC pin AA/1D and the
R ground terminal.
R b_ If there is no 28VDC:
R - do a check of the wiring between the AEVC pin AA/1C and
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