TM 11-6625-3041-30/TO 33A1-8-908-12
2-6.
SG-1139 CHECK PROCEDURE (CONT)
q Disconnect
all cables from front panel connectors.
Step Power Input
1
q Connect
SG-1139 to a source of 115 Vac power and set POWER
to ON:
Green POWER
indicator must
light. If it does,
proceed to step 2.
This step checks the following:
External . . . . . . .. 115 Vac power outlet
Accessory . . . . . . . . Power cable
AC Input card . . . . 12V Ref circuit
Case Assembly . . . . POWER input connector
POWER circuit breaker
POWER indicator
If POWER indicator does not light:
Press LAMP TEST pushbutton. If any other indicator lights,
possible cause is POWER indicator lamp. Replace (refer to
TM 11-6625-3041-12), and repeat step 1.
If no indicator lights when LAMP TEST pushbutton is pressed,
possible cause is 115 Vac power outlet. Check outlet. If
power is missing, connect SG-1139 to an outlet in which power
is present and repeat step 1.
If outlet is functional, possible cause is power cable.
Replace or repair (refer to para 2-15), and repeat step 1.
If replacement power cable does not provide proper indication,
possible cause is AC Input card A2. Replace (refer to
TM 11-6625-3041-12), and repeat step 1.
If replacement AC Input card does not provide proper indica-
tion, possible cause is POWER input connector or POWER circuit
breaker. Evacuate equipment to depot for repair.
