1. Possible Causes
_______________
- RECEIVER-VOR/MKR, 2 (3RS2)
- short to ground at the wiring between the circuit breaker (2RS2) and the VOR/MK receiver 2 (2RS2)
- C/B-NAV/VOR/2 (1RS2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 34-55-00-740-002 BITE Test of the VOR/MKR
AMM 34-55-31-000-001 Removal of the VOR/MKR Receiver (3RS1, 3RS2)
AMM 34-55-31-400-001 Installation of the VOR/MKR Receiver (3RS1, 3RS2)
ASM 34-55/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
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PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
121VU COM NAV/VOR/2 2RS2 K08
B. Test
(1) If the circuit breaker (2RS2) trips, refer to Para. 4. C. of this trouble shooting procedure.
(2) Do the BITE test of the VOR/MKR (Ref. AMM TASK 34-55-00-740-002).
- If the BITE test is not possible, refer to Para. 4. B. of this trouble shooting procedure.
4. Fault Isolation
_______________
R
A. If the circuit breaker (2RS2) is closed, and if the BITE test gives the maintenance message VOR2 (3RS2):
- replace the RECEIVER-VOR/MKR, 2 (3RS2) (Ref. AMM TASK 34-55-31-000-001)
and (Ref. AMM TASK 34-55-31-400-001). 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 ∞∞34-55-00∞∞∞∞∞∞∞∞∞∞Page 204
Feb 01/05 CES
B. If the circuit breaker (2RS2) is closed and if the BITE test is not possible
- do a check for 115VAC at pin AC/2 of the VOR/MKR receiver 2.
(1) If there is no 115VAC:
- do a check of the wiring of the 115VAC signal from circuit breaker (2RS2) to VOR/MKR receiver 2 (3RS2) (Ref. ASM 34-55/01).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity:
- replace the C/B-NAV/VOR/2 (2RS2).
(2) If there is 115VAC:
- do a check of the wiring of the ground signal at VOR/MKR receiver 2 pin AC/3.
(a) If there is no continuity:
- repair the above wiring.
C. If the circuit breaker (2RS2) is open:
- close this circuit breaker.
(1) If the circuit breaker (2RS2) trips:
- remove the RECEIVER-VOR/MKR, 2 (3RS2) (Ref. AMM TASK 34-55-31-000-001).
- close the circuit breaker (2RS2).
(a) If this circuit breaker stays closed:
- install the VOR/MKR receiver 2 (Ref. AMM TASK 34-55-31-400-001)
1 If the circuit breaker trips again:
_
- replace the VOR/MKR receiver 2 (Ref. AMM TASK 34-55-31-000-001) and (Ref. AMM TASK 34-55-31-400-001).
(b) If this circuit breaker trips again:
- do a check for a short to ground at the wiring between the circuit breaker (2RS2) and the VOR/MK receiver 2 (2RS2) (Ref. ASM 34-55/01).
1 If there is a short to ground:
_ - repair the above wiring.
2 If there is no short to ground:
_ - replace the C/B-NAV/VOR/2 (1RS2).
3 Install the VOR/MKR receiver 2
_ (Ref. AMM TASK 34-55-31-400-001).
D. 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 ∞∞34-55-00∞∞∞∞∞∞∞∞∞∞Page 205
Feb 01/05R CES
TASK 34-55-00-810-803
Loss of the VOR 1 Data Bus Identified by the EIS 1
1. Possible Causes
_______________
- RECEIVER-VOR/MKR, 1 (3RS1)
- wiring of the OMNI BEARING AND SIGNAL MKR OUTPUT 2 bus from the VOR/MKR receiver 1 (3RS1) to the first terminal block
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-60-00-740-002 EIS Input Test AMM 31-60-00-740-007 GROUND SCANNING Test of the DMC AMM 34-55-31-000-001 Removal of the VOR/MKR Receiver (3RS1, 3RS2) AMM 34-55-31-400-001 Installation of the VOR/MKR Receiver (3RS1, 3RS2) ASM 34-55/01
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