4-40 Phaser 4500/4510 Service Manual
General Troubleshooting
Optional 550-Sheet Feeder PWBA (Tray 4)
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e
Use this procedure when the optional 550-sheet paper feeder is installed
as Tray 4. When it is installed as tray 3, see the procedure for the
“Optional 550-Sheet Feeder PWBA (Tray 3)” on page 4-39.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ 550-sheet feeder PWBA
■ Feeder harness 5
■ Feeder harness 2
■ HVPS/engine logic board
■ “550-Sheet Feeder Signal Diagram” on
page 10-33
■ “550-Sheet Feeder General Wiring Diagram” on
page 10-32
■ “550-Sheet Feeder Plug/Jack Locator” on
page 10-12
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check feeder harness 2 (in tray 4) for
continuity
Remove feeder harness 2.
Is J8483 <=> J83 continuous?
Go to step 2. Replace
feeder
harness 2.
2 Check feeder harness 5 (in tray 3) for
continuity
Remove feeder harness 5.
Is J84 <=> J8483 continuous?
Go to step 3. Replace
feeder
harness 5.
3 Replace the 550-sheet feeder PWBA
(page 8-85).
Does the problem still occur after
replacement?
Problem
solved.
Replace the
HVPS/engine
logic board
(page 8-73).