TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
Ix. NBC SYSTEM (continued).
(1) NO FAN OPERATION FROM M2A2 AIR PURIFIER.
I
Initial Setup:
Tools/Test Equipment:
Equipment Conditions:
• Digital multimeter (DMM) (Item 13, Appendix I)
l MASTER switch set to OFF (refer to TM
l General mechanic’s tool kit (Item 24,
9-2350-287-10).
Appendix I)
NOTE
l Instead of using multi meter
for voltage check, STE/lCE
troubleshooting,
INDIVIDUAL
BATTERY VOLTAGE TEST-TEST
89 maybe performed.
l Instead of using multimeter
for continuity check, STE/lCE
troubleshooting, TEST 91 may be
performed.
A.
1. Disconnect wire 415C harness 12330298
from M2A2 air purifier.
2. Place multimeter red lead in wire 415C
and 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). Verify
problem is solved.
B. 1. Reconnect wire 415C harness 12330298
to M2A2 air purifier.
2. Disconnect harness 12330298 from NBC
wiring harness 12330296.
Continued on next page
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