TM 5-3610-253-14
Remove foam backing and plastic cover from SCU motherboard.
l.
m.
Remove twelve cross tip retaining screws and defective SCU motherboard.
n.
Install new SCU motherboard and secure with screws.
o.
Reinstall plastic cover and foam backing onto new SCU motherboard.
Tilt SCU upright and slide into paper cutter. Retain with slide rail
p.
retaining screws and top front retaining screws.
Reinstall circuit boards into their proper locations.
q.
r.
Reinstall circuit board retaining bracket and secure with screws.
s.
Reconnect ribbon cable between IAR and AR circuit boards.
t. Reconnect all plug connectors to new SCU motherboard.
u.
Reinstall the rear electronics enclosure cover.
v.
Reconnect ribbon cable between MC unit and SCU. Lock in place with
tabs.
w.
Reinstall front electronics enclosure cover.
x.
Place operator key back into the safety lock.
MOS: 35E, Special Electronic Devices Repairer
TOOLS: Flat Tip Screwdriver
7 mm Socket with 1/4 in. Drive
8 mm Socket with 1/4 in. Drive
10 mm Socket with 1/4 in. Drive
Handle, Socket Wrench, 1/4 in. Drive
Needle Nose Pliers
SUPPLIES: MC Unit Motherboard
WARNING
Death or serious injury may occur from electrical shock unless power is
turned off before servicing.
a.
Turn off power.
(1) Turn Star-Delta switch to Y position, then to O position.
(2) Turn main power switch to O position.
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