TM-5-2350-262-20-1

ARMORED COMBAT EARTHMOVER (ACE), M9

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL; VOLUME 1 OF 3

TM-5-2350-262-20-1 - Page 350 of 776

TM 5-2350-262-20-1

Change 4

3-339

Step 2. - Continued

Turn MASTER switch (2) ON, check for minimum 24VDC at center terminal 2, circuit

411D (8) and terminal 5, circuit 411A (9) of fan switch (1).

Turn MASTER switch OFF

after test.

If minimum 24VDC is present at center terminal 2, circuit 411D (8) and terminal 5,

circuit 411A (9), replace fan switch (1) (p 4-106), verify problem is solved.

If no voltage is present, go to step 3.

Step 3.

Check circuit breaker (10) for continuity.

Disconnect electrical lead 10A/411A (11) from circuit breaker (10).

Check circuit

breaker (10) for continuity.

If an open circuit

is indicated, replace circuit breaker (10) (p 4-123), verify

problem is solved.

If continuity is indicated, go to step 4.

MASTER

SWITCH