Table 3-2. Self-Test - Continued - TM-5-6675-309-140033

ARMY TM 5-6675-309-14

MARINE CORPS TM 08840A-14/1

Table 3-2. Self-Test - Continued

Test procedure

Normal indication

2h. If lighted, press OVERLOAD FAIL switch-indica-

OVERLOAD FAIL switch-indicator goes off

tor to off

2i. Press and hold INITIATE switch for more than 5

The OVERLOAD FAIL switch-indicator lights

seconds

within approximately 2 to 3 seconds after the

INITIATE switch is pressed. (POWER SUP-

PLY TEST SET OVERTEMP indicator may

light after 45 to 75 seconds)

NOTE

To repeat this test, return to step 2h.

2j. Set SELF TEST switch to OFF

PS ON indicator goes off if lighted, POWER

SUPPLY TEST SET OVERTEMP goes off

2k. Set INPUT POWER UUT circuit breaker to ON

INPUT POWER UUT circuit breaker trips off

immediately and the DVM indicates -9.9 to

-10.1V

2l. Press OVERLOAD FAIL switch-indicator to off

OVERLOAD FAIL switch-indicator goes off

2m. Set INPUT POWER UUT circuit breaker to ON

INPUT POWER UUT circuit breaker stays on

and the DVM indicates +5 to +15V

2n. Energize the variable DC power supply and set its

output to +7 to +13V

2o. Set MODE switch to NO LOAD

2p. Slowly increase the variable power supply voltage

The INPUT POWER UUT circuit breaker trips

toward +37V

off between +31 and +37V. DVM indicates

-9.9 to -10.1V after the circuit breaker trips

2q. Remove jumper

2r. Jumper SELF TEST/OVERVOLT/ +INV DR test

DVM indicates -9.9 to -10.1V

jack and SELF TEST -10V test jack

2s. Remove jumper

2t. Jumper SELF TEST/OVERVOLT/ +5V test jack

DVM indicates -4.0 to -6.0V

and SELF TEST -10V test jack

2u. Remove jumper

2v. J u m p e r SELF TEST/OVERVOLT/PREC +15V

DVM indicates -4.0 to -6.0V

test jack and SELF TEST -10V test jack

2w. Remove jumper

DVM indicates -9.9 to -10.1V

2 x . Jumper SELF TEST/OVERVOLT/PREC -15V

test jack and SELF TEST -10V test jack

2y. Remove jumper

2z. Jumper SELF TEST/OVERVOLT/ +17V test jack

DVM indicates -4.0 to -6.0V

and SELF TEST -10V test jack

2aa. Remove jumper

2ab. Jumper SELF TEST/OVERVOLT/V LAMP jack

DVM indicates -4.0 to -6.0V

and SELF TEST -10V test jacks

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