Repair and Replacement

TM 11-6625-444-14-1

Figure 6-24. Disassembly sequence (n through u ).

screws are accessible from the bottom of the

6-11. Cleaning

voltmeter.

For cleaning instructions, refer to paragraph 4-

(3) Remove the plexiglass cover from the

function display by removing attaching screws.

6-12. Repair and Replacement

(4) Remove and replace the defective lamp or

NOTE

lamps using standard soldering practices.

S o l d e r i n g o p e r a t i o n s s h a l l be ac-

(5) Install the plexiglass cover and attach

complished in accordance with MIL-

using the screws removed in step (3).

HDBK- 4 5 4 A . A v ac u u m o p e r a t e d

(6) Install the function display in the volt-

resoldering tool shall also be used

meter and attach using the screws removed in step

whenever resoldering is required.

(2).

Maximum allowable soldering iron

b. Readout Tubes. Repair of the readout tubes is

wattage rating is 25 watts.

limited to replacement. Proceed as follows:

a. Function Display. Repair of the function

(1) Remove the top and bottom dust covers

display is limited to replacement of lamps

and inner guard covers in accordance with

using the following procedure.

(1) Remove the top and bottom dust

(2) Remove and replace readout tubes V 1

covers and inner guard covers in accordance

through V7 using standard soldering practices.

c. Pushbutton Switches. Repair of the push-

(2) Remove the function display located

button s w i t c h e s is l i m i t e d to r e p l a c e m e n t .

adjacent to the readout tubes near the front

Proceed as follows:

panel by removing its attaching screws. These

(1) Remove the top and bottom dust c o v e r s

Change 2

6-25