TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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KNOWN INFO TEST OPTIONS REASON FOR QUESTION Voltage Test or STE/ICE-R Test #89 e48A. ALL MARKER LIGHTS DO NOT ILLUMINATE IN NORMAL MODE TM 9-2320-366-20-1 2-604.56 Change 1 If 12 VDC is present, wire 1912 is faulty. POSSIBLE PROBLEMS Faulty dashboard cable assembly. Faulty main light switch. Faulty relay K20. WARNING Read WARNING on following page. 1. Is 12 VDC present at relay circuit breaker CB67 socket 3? NO Go to step 2 of this fault. YES Repair wire 1912 from circuit breaker CB67 socket 3 to terminal board TB1 position 26 (para 2-45) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). Circuit breaker CB67 OK. No marker lights illuminate. INITIAL SETUP Equipment Conditions Engine shut down (TM 9-2320-366-10-1). Tools and Special Tools Tool Kit, Genl Mech (Item 46, Appendix C) STE/ICE-R (Item 41, Appendix C) Multimeter, Digital (Item 22, Appendix C) Personnel Required (2) References TM 9-4910-571-12&P NOTE START Perform electrical troubleshooting e1. CIRCUIT BREAKER DOES NOT OPERATE on circuit breaker CB67 prior to beginning this task.