Quantcast BACK-UP ALARM DOES NOT OPERATE - continued - TM-10-3930-673-20-10118

 

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BACK-UP ALARM DOES NOT OPERATE - continued - TM-10-3930-673-20-10117
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BACK-UP ALARM DOES NOT OPERATE - continued - TM-10-3930-673-20-10119
TM 10-3930-673-20-1
3. BACK-UP ALARM DOES NOT OPERATE (CONT).
2
KNOWN INFO
TEST OPTIONS
Back-up alarm OK.
Voltage test.
Is 24 vdc present at back-up
STE/ICE-R 89.
POSSIBLE PROBLEMS
switch where wire 21
REASON FOR QUESTION
Wire 21 faulty.
connects?
Connector J1 faulty.
This question eliminates possible
Connector P1 faulty.
problems and determines where
Back-up switch faulty.
troubleshooting continues.
Wire 20 faulty.
Circuit breaker CB2 faulty.
Wire 5 faulty.
Relay K2 faulty.
Wire 3 faulty.
Run relay K1 faulty.
Wire 1 faulty.
Circuit breaker CB6 faulty.
Go to Step 3 of this
NO
Connector J2 faulty.
fault.
Connector P2 faulty.
YES
Go to Step 17 of
this fault.
3
KNOWN INFO
TEST OPTIONS
Back-up alarm OK.
Voltage test.
Is 24 vdc present at back-up
Connector J1 OK.
STE/ICE-R 89.
switch where wire 20
Connector P1 OK.
REASON FOR QUESTION
connects?
Wire 21 OK.
If 24 vdc is present, back-up switch
POSSIBLE PROBLEMS
faulty.
Back-up switch faulty.
Wire 20 faulty.
Circuit breaker CB2 faulty.
Wire 5 faulty.
Relay K2 faulty.
Wire 3 faulty.
Run relay K1 faulty.
Wire 1 faulty.
Circuit breaker CB6 faulty.
Go to Step 4 of this
NO
Connector J2 faulty.
fault.
Connector P2 faulty.
YES
Replace back-up
switch (Para 8-40).
2-66

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