Xerox Phaser 4510 - Optional 550-Sheet Feeder Turn Roller Clutch

4-48 Phaser 4500/4510 Service Manual
General Troubleshooting
Optional 550-Sheet Feeder Turn Roller Clutch
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Optional 550-sheet paper
feeder turn roller clutch
■ Optional 550-sheet paper
feeder
■ 550-sheet paper cassette
■ 550-sheet feeder PWBA
■ Clutch/sensor harness 1
■ Clutch/sensor harness 2
■ Feeder harness 2
■ HVPS/engine logic board
■ LVPS
■ Feeder harness 1
■ “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 Clutch/Sensor harness 1 for
continuity
1.Disconnect P/J855.
2.Disconnect P/J854.
Is each cable between J855 <=> J854
continuous?
Go to step 2. Replace the
Clutch/
Sensor
harness 1.
2 Check Clutch/Sensor harness 2 for
continuity
1.Disconnect P/J85 from the 550-sheet
feeder PWBA.
2.Disconnect P/J855.
Is each cable between J85 <=> J855
continuous?
Go to step 3. Replace the
Clutch/
Sensor
harness 2.
3 Check the resistance of the turn roller
clutch:
Measure the resistance of the clutch
between P/J854-1 <=> P/J854-2.
Does the resistance measure 172 ohm +/-
10% (at 20° C)?
Go to step 4. Replace the
turn roller
clutch
(page 8-92).
4 Check the 550-sheet feeder PWBA:
1.Disconnect P/J83 from the 550-sheet
feeder PWBA.
2.Test for continuity at these points:
■ P83-3 <=> P85-3
■ P83-4 <=> P85-4
Are both continuous
Go to step 5. Replace the
550-sheet
feeder PWBA
(page 8-85).