Phaser 4500/4510 Service Manual 4-45
General Troubleshooting
Optional Feeder Paper Size Switch Assembly
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Option paper size switch
assembly
■ Feeder size assembly harness 1
■ Feeder size assembly harness 2
■ Optional 150-sheet paper feeder
■ 550-sheet paper cassette
■ 550-sheet feeder PWBA
■ 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 size assembly harness 1:
1.Remove feeder size assembly harness 1.
2.Test each conductor between J801 <=>
J802 for continuity.
Is each cable continuous?
Go to step 2. Replace
feeder size
assembly
harness 1.
2 Check feeder size assembly harness 2 for
continuity:
1.Disconnect P/J80 from the 550-sheet
feeder PWBA.
2.Disconnect P/J801.
3.Test each conductor between J80 <=>
J801 for continuity.
Is each cable continuous?
Go to step 3. Replace
feeder size
assembly
harness 2.
3 Check the Option paper size switch
assembly.
Is the harness of Option paper size switch
assembly continuous?
Go to
“Optional
550-Sheet
Feeder PWBA
(Tray 3)” on
page 4-39, or
“Optional
550-Sheet
Feeder PWBA
(Tray 4)” on
page 4-40.
Replace the
Option paper
size switch
assembly
(page 8-82).
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