TM 9-2350-277-34VEHICLE BATTERIES DISCHARGE WITH EXTERNAL AC POWER APPLIED (M1068A3ONLY)—Continued0007 004Y1. Disconnect Special Purpose Power Cable (1) from external ACpower and from J24 (2) on Power Control Enclosure.2. Install all circuits (3) on power supplies PS1 (4) and PS2 (5).3. Remove 10 screws (6) and lockwashers (7) and lower faceplate(8) of Power Control Enclosure. Discard lockwashers.4. Undo velcro strap (9) securing safety cover (10) over the inside ofthe faceplate (8). Open safety cover (10).5. Measure resistance between PS1 (+) OUTPUT terminal (11) andDC bus bar at terminal 1 (12) of circuit breaker CB15 (13).6. Does multimeter read 0 ohms?YESNO4YN1. Replace circuit 31E (WP 0090 00)and See your -20.2. Verify no faults found.0007 00-5
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