Quantcast REPAIR - TM-55-1905-223-24-18-20479

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TM 55-1905-223-24-18-2
j.
Remove two machine screws (16) from bracket (17) securing keyboard (18) to enclosure.
k.
Remove data entry keyboard (18).
REPAIR
Repair at this level of maintenance is by replacement of printed circuit boards
(5, 7, 8, 9, 11, 12, 13, and 14) and data entry keyboard (18).
REPLACEMENT
a. Install data entry keyboard (18, Figure 3-116) and secure to bracket (17)
with two machine screws (16).
b. Connect electrical leads at terminal strip (15).
c.
Slide printed circuit board (multi-card) (5) into upper retaining slide (6).
d. Push on the circuit board until it is firmly seated in connector (4).
e. Repeat steps c. and d. for printed circuit boards (7, 12, Z-8), (8, 13,
master card), (9, 14, power supply), and (11, multi-card).
f.
Position sleeves (2) and install crossbar (3); secure with screws (1).
g. Position central processing unit (5, Figure 3-115) and enclosure (3) on bulkhead.
h. Secure with four hex head bolts (2).
i.
Connect electrical leads to CPU at connections (4).
j.
Close door (1).
k.
Restore electrical power to CPU and remove tags.


 


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