TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
Page 408 of 1760
KNOWN INFO WARNING Read WARNING on following page. TEST OPTIONS REASON FOR QUESTION If 24 VDC is not present, relay K2 is faulty. 8. POSSIBLE PROBLEMS Faulty relay K2. Faulty dashboard cable assembly. NO Replace relay K2 (para 7-9). YES Voltage Test or STE/ICE-R Test #89 Service drive lights OK. Circuit breaker CB70 OK. Batteries OK. 100 AMP reverse polarity relay OK. 100 AMP reverse polarity relay to power distribution panel (PDP) 24 VDC cable OK. Battery to 100 AMP reverse polarity relay 24 VDC cable OK. 200 AMP reverse polarity relay OK. 200 AMP terminal block OK. Battery to 200 AMP terminal block 24 VDC cable assembly OK. 200 AMP terminal block to reverse polarity relay 24 VDC battery cable OK. 200 AMP terminal block to reverse polarity relay 24 VDC load cable OK. 200 AMP terminal block to power distribution panel (PDP) 24 VDC cable OK. Master power switch OK. Is 24 VDC present at relay K2 socket 87 on PDP? TM 9-2320-365-20-1 2-272 Change 1 e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)