TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
Page 410 of 1760
KNOWN INFO TEST OPTIONS REASON FOR QUESTION 9. e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT) NO YES Continuity Test or STE/ICE-R Test #91 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. Relay K2 OK. POSSIBLE PROBLEMS Faulty dashboard cable assembly. Replace bus bar X6 on PDP or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). If continuity is not present, wire 1604 is faulty. If continuity is present, bus bar X6 is faulty. Repair wire 1604 from relay K2 socket 87 on PDP to bus bar X6 on PDP (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). Is continuity present from relay K2 socket 87 on PDP to circuit breaker CB36 socket 6 on PDP? TM 9-2320-365-20-1 2-274 Change 1