6/02
4-4
DC1632/2240
REP 1.3, REP 1.4
Prelaunch Training/Review
Repairs and Adjustments
REP 1.3 ESS Chassis
Parts List on PL 13.1
Removal
1. If a new PWB will be installed, record NVM values for new PWB.
WARNING
To avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
2. Remove Right Cover (REP 14.3).
3. Remove Top Cover (REP 14.1).
4. Remove Rear Cover (REP 14.2).
CAUTION
PWBÃs can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
5. Remove ESS PWB (REP 1.12).
6. Remove ESS Chassis (Figure 1).
a. Push Harness Clips (2) down out of Chassis holes
b. Disconnect Harness P/JÃs (6).
c. Disconnect Harness P/JÃs (2).
d. Disconnect Switch from Chassis.
e. Loosen Screws (2) at front and remove Screws (2) at rear of machine.
f. Lift outer end of Chassis to disconnect Hidden Connector and then remove Chassis.
Figure 1 Removing ESS Chassis
Replacement
NOTE: If the ESS PWB will be replaced with a new ESS PWB, discard the MAC ROM from the
new ESS PWB and install the MAC ROM removed from the old ESS PWB.
REP 1.4 3.3 V LVPS or 5 V LVPS
Parts List on PL 9.1
Removal
WARNING
To avoid personal injury or shock, do not perform repair or adjustment activities with
the power switch on or electrical power applied to the machine.
CAUTION
PWBÃs can be damaged by an electrostatic discharge. Observe all ESD procedures to avoid
component damage.
1. Remove Rear Cover (REP 14.2).
2. Remove High Voltage Power Supply Chassis (REP 1.6).
3. Remove appropriate LVPS (Figure 1).
a. Disconnect appropriate Harness P/JÃs (2).
b. Remove appropriate Screws (4) and remove LVPS.
Figure 1 Removing LVPS
Screws (2)
Screw
Screw
Harness
Clips
Harness
P/JÃs (6)
Harness
P/JÃs (2)
Hidden
Connector
Outer
End
Switch
Screws (2)
Screws
(2)
Screws (2)
Screws
(2)
3.3 VDC
LVPS
5 VDC
LVPS
Harness P/JÃs
Harness P/JÃs
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