2-31. PROGRAMMABLE POWER SUPPLY ASSEMBLY 1A3 REPAIR (cont)
2. GROUND LEAD REPLACEMENT
This procedure is used to replace any
of four ground leads contained in the
programmable power supply assembly.
Open right rear cabinet door for
access to rear of programmable
power supply assembly (1).
On rear panel of power supply
(2 thru 5) containing ground lead
to be replaced, remove two ter-
minal board cover screws (6) and
On terminal board (terminal 3),
remove screw (8), washer (9), and
ground lead (10).
Remove screw (11), lockwasher
(12), three washers (13), four
ground leads (14), and nut (15).
Discard defective ground lead
Prepare surface, new ground lead
(14), and hardware (11, 12, 13,
and 15) for application of zinc
chromate primer (para 2-19).
Install new ground lead (14) and
hardware (11, 12, 13, and 15) as
Apply thin coat of zinc chromate
primer over bonded area and
hardware (11 thru 15).
Install programmable power supply
assembly in reverse order of
END OF TASK