TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).Ix. NBC SYSTEM (continued).(1) NO FAN OPERATION FROM M2A2 AIR PURIFIER.IInitial Setup:Tools/Test Equipment:Equipment Conditions:• Digital multimeter (DMM) (Item 13, Appendix I)l MASTER switch set to OFF (refer to TMl General mechanic’s tool kit (Item 24,9-2350-287-10).Appendix I)NOTEl Instead of using multi meterfor voltage check, STE/lCEtroubleshooting,INDIVIDUALBATTERY VOLTAGE TEST-TEST89 maybe performed.l Instead of using multimeterfor continuity check, STE/lCEtroubleshooting, TEST 91 may beperformed.A.1. Disconnect wire 415C harness 12330298from M2A2 air purifier.2. Place multimeter red lead in wire 415Cand ground black lead.3. Turn MASTER switch ON (refer to TM 9-2350-287-10).4. Check for 24 ± 3 vdc.5. Turn MASTER switch OFF (refer to TM 9-2350-287-10).Is voltage indicated?Replace M2A2 unit (para 22-2). Verifyproblem is solved.B. 1. Reconnect wire 415C harness 12330298to M2A2 air purifier.2. Disconnect harness 12330298 from NBCwiring harness 12330296.Continued on next page2-368
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