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 TM 55-1905-223-24-18-1
Repair Central Processing Unit. (FIGURE 2-122)
2-136.
a. Disassembly, b. Repair, c. Assembly.
This task covers:
INITIAL SETUP
Tools
Equipment Condition
T o o l kit, electrician's,
Electrical power to controls system
secured and tagged "Out of
Service - Do Not Operate" at ship
service switchboard,
Materials/Parts
(TM 55-1905-223-10)
Cartridge fuse (2)
P/N 68-00009-003
Electromagnetic relay (2)
P/N 51-0000-9-003
Warning tags, Item 1, Appendix C
DISASSEMBLY
Unscrew two retaining screws (2) and swing door (3) of enclosure (1) to the
a.
left.
Unplug electromagnetic relays (4, 6) from terminal board (5).
b.
c.
Remove fuses (9, 10) from fuse caps 7, 8.
Repair at this level of maintenance is by replacement of fuses (9, 10) and
magnetic relays (4, 6).
Install fuses (9, 10) in end of fuse caps (7, 8).
a.
Insert into fuse holes, push inward and turn 1/4 turn clockwise.
b.
Plug electromagnetic relays (4, 6) into terminal board (5).
c.
Swing door (3) to the right, secure to enclosure (1) with two retaining
d.
screws (2).
Restore power to central processing unit and remove tags.
e.
2-526
Change 1
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