Xerox M20 - WorkCentre B/W Laser, Service Manual

Page: 102 / 314

December 2006
4-4 WorkCentre M20, 4118, FaxCentre 2218 Family
REP 1.2
Repairs and Adjustments
REP 1.2 PBA Main (M20F)
Parts List on PL 1.10
Removal
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Take care during this procedure. Sharp edges may be present that can cause injury.
CAUTION
Before performing this procedure, refer to General Disassembly Precautions, GP 10.
NOTE: This procedure should only be performed on the M20F. For the 4118 and 2218 PBA
Main repair procedure, go to REP 1.3.
NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com-
monly recognised part names.
CAUTION
Ensure that E.S.D. procedures are observed during the removal and installation of the PBA
main.
1. If a new PBA main is to be installed, go to GP 2. Print the System Data list and Connect
Page (M20i) list.
2. Remove the MEA unit - rear cover, REP 4.2.
3. Remove the PBA LIU, Figure 1.
Figure 1 PBA LIU removal
4. Disconnect the CNs from the PBA main.
5. If installed, remove the following components:
• PBA SUB - NPC3 - MFP, PL 1.10 Item 8.
• SDRAM - DIMM, PL 1.10 Item 6.
• PBA ETC - PS - DIMM, PL 1.10 Item 5.
• PBA foreign device interface, PL 1.10 Item 10.
• PBA foreign device interface harness, PL 1.10 Item 11.
2
Remove 2 screws, then
the PBA LIU.
1
Disconnect CN35.