IBML
Installation Instructions
10.2 CE
′
A
′
Tasks
Warning: Follow the existing ESD procedures
when handling logic parts.
10.2.1 Power Supplies
Open the rear system doors. Disconnect the
ground wire(s) (if present) from the right door,
and remove the door.
Note:
To provide clearance for easier door
removal, you may have to loosen two screws
securing the end cover.
1. From the rear, remove the shield
1
over the CCU cards, if present.
2. Locate the PSTY1 in location 01Q and
remove the plastic cover from the power
TB
2
.
Disconnect all FDS cables from the TB.
Tape the FDS cable ends to the enclo-
sure (use tape provided for repacking).
3. From the top of PSTY1, unplug the power
control bus cable from connector J2 and
the Power On Reset cable from J1
3
.
Warning
Secure the power bus cable in its
raceway to prevent damage during
CCU enclosure exchange.
4. Remove the 3 screws
4
. Then, remove
the PSTY1 from the 3745 (the power cord
has been routed back by CE
′
B
′).
5. Disconnect the FDS ground cable
attached to the frame
5
Save screws.
3745
PN 17G5534
EC C38405
EC C38405A
EC D55799
EC D55883
EC E27926
FFBM
8 of 22
06APR93
17JUN93
16SEP94
11MAY95
14MAR97
8
