Light Indicator (A23), Removal/Installation.

TM 32-5865-069-24&P

Remove and retain the hardware securing VR1 to the chassis.

Remove VR1.

To install a replacement VR1, reverse the procedure described in steps a.

thru e. above.

5-4.22 Elapsed Time Indicator (M1), Removal/Installation. To remove/install M1,

carry out the following steps:

a. Remove top cover. Refer to para 5-4.1.

b. Tag and unsolder the wires connected to M1.

c. Remove and retain the two screws securing M1 to the front panel.

Remove M1.

e. To install a replacement M1, reverse the procedure described in steps a.

thru d. above.

To remove/install A23, carry

5-4.23 Light Indicator (A23), Removal/Installation.

out the following steps:

Remove top cover.

Tag and unsolder the wires connected to A23.

Remove and retain the hardware securing A23 to the front panel.

Remove A23.

To install a replacement A23, reverse the procedure described in steps a.

thru d. above.

5-5.

MAINTENANCE OF CIRCUIT CARDS (A1 - A12, A14) .

CAUTION

Al thru AlO and A12 contain parts sensitive to damage by Electro-

Use ESD precautionary procedures when

static Discharge (ESD).

touching, removing or installing these assemblies.

A1 thru A12 and A14 are tested using AN/USM-410, refer to para 5-2. The assem-

blies are repaired by replacing faulty component(s), determined during test.

Refer to NAVTORPSTA REPORT 1347, Guide Manual for Repair of Electronic Modules,

for component replacement procedures. After installing replacement parts, test

the CCA using AN/USM-410 to verify repair.

5-6. REPAIRS TO CONTACT ASSEMLY (A15). Minor damage to the assembly can be

repaired by replacing damaged contacts. When damage-to the assembly is extensive,

refer to para 5-4.10. Repair the assembly as follows:

Refer to para 5-4.1 for procedure.

a. Remove top and bottom covers.

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