2-19. TROUBLESHOOTING CHART (continued).
x. NBC SYSTEM (continued).
(1) NO FAN OPERATION FROM M2A2 AIR PURIFIER
UNIT (continued).
I
CONTINUED FROM B
B.
3. Place multimeter red lead on terminal of
wire 415C of NBC wire harness 12330296
and ground black lead.
4. Turn MASTER switch and NBC POWER
switch ON (refer to TM 9-2350-287-10).
5. Check for 24 ± 3 vdc.
6. Turn MASTER switch and NBC power
switch OFF (refer to TM 9-2350-287-10).
Is voltage indicated?
Repair wire 415C or replace harness
12330296 (para 7-69) Verify problem is solved.
C. 1. Reconnect harness 12330298 to NBC
wiring harness 2330296.
2. Disconnect NBC wire harness 12330296
from NBC control box J2 connector.
3. Place multimeter red lead in socket B of
NBC control box output and ground black
probe.
4. Turn MASTER switch and NBC POWER
switch ON (refer to TM 9-2350-287-10).
5. Check for 24 ± 3 vdc.
6. Turn MASTER switch and NBC POWER
switch OFF (refer to TM 9-2350-287-10).
Is voltage indicated?
Repair wire 415C or replace NBC WIRING
Continued on next page
2-369
TM 9-2350-287-20-1
harness 12330296 (para 7-69). Verify
problem is solved.
