Section VII. DEPOT OVERHAUL STANDARDS

TM 11-6625-646-15

SECTION VII

DEPOT OVERHAUL STANDARDS

repaired electronic equipment in TM SIG 355-1, TB SIG

7-1. Applicability of Depot Overhaul Standards

355-2, and TB SIG 355-3 form a part of the

Test set TS-1894/ASM must be tested thoroughly after

requirements for testing this equipment.

rebuild or repair to insure it meets adequate

performance standards for return to stock or reissue.

b. Technical Publications. No other publication is

Use the tests in this section to measure the performance

applicable to this equipment.

of the repaired test set. It is mandatory that repaired

c. Modification Work Orders.

Perform all

equipment to be reissued, or returned to stock for

modification work orders applicable to the TS-1894/ASM

reissue, meet all performance standards outlines in this

before making the tests specified. DA Pam 310-7 lists

section.

all applicable MWO's.

7-2. Applicable References

7-3. Test Facilities Required

a. Repair Standards. Applicable procedures of the

The following items are required for depot testing:

depot performing this test and the general standards for

Item

NATIONAL stock No. or part No.

Technical manual

Ac power supply ................................ ................................

W5MT3A or equiv

Dc power supply ................................ ................................

HWP712B or equiv

Decade resistance................................ .............................

AN/URM-2 or equiv

Variable resistor 1,000 ohms ................................ .............

T10A1000 or equiv

Electronic voltmeter ME-30 (*)/U (vtvm)............................

6625-00-643-1670 ......................

TM 11-6625-320-12

Manometer................................ ................................ ........

34BFZ-20 (Meriam)

Multimeter TS-352B/U................................ .......................

6625-00-553-0142 ......................

TM 11-6625-366-15

Dc voltmeter, 0 to 15 volts ................................ ................

341 or equiv

7-4. Preliminary Procedures

c. Connect power cable A02VS309-2 between

receptacle J61 115V 60 ~ and a 115-volt 60cycle power

a. Remove the front panel attaching screws.

source.

Remove the panel-chassis from the case.

d. Connect power cable A02VS309-3 between

b. Check that the controls are positioned as

receptacle J62 115V 400 ~ and a 115volt 400-cycle

follows:

power source.

Control

Function

FUNCTION switch...........................

AC PWR

7-5. Ac Power Supply Circuit and Meter

ASE MODE switch ..........................

OFF

Rectifier Circuit Test

115V 400 ~ POWER switch ............

Off (down)

a. Connect the vtvm between DEM/MOD CARD

PUMP switch................................ ...

Off (down)

Adapter switch................................ .

POS-B

TESTER receptacle pins 12 (gnd) and 18. Adjust the

AXES METERS READ switch .........

OPEN LOOP

vtvm to indicate ac volts.

PEDAL POT control ........................

Centered

b. Set the 115V 400- POWER switch to on

CHANGE 4 65