Xerox Phaser 4510 - Duplex Unit PWBA

Phaser 4500/4510 Service Manual 4-49
General Troubleshooting
Duplex Unit PWBA
5 Check feeder harness 2:
1.Remove feeder harness 2.
2.Test for continuity across J2083 <=> J83.
Is it continuous?
Go to step 6. Replace
feeder
harness 2.
6 Check feeder harness 1:
1.Remove feeder harness 1.
2.Test for continuity across J20 <=> J2083.
Is it continuous?
Go to step 7. Replace
feeder
harness 1.
7 Check the power to the turn roller clutch:
Measure the voltage across P20-10 <=>
P20-9 on the HVPS/engine logic board.
Is the voltage +24 VDC?
Replace the
turn roller
clutch
(page 8-92).
Go to step 8.
8 Check the HVPS/engine logic board:
1.Disconnect P/J10 from the HVPS/engine
logic board.
2.Test for continuity across P10-1 <=>
P20-10.
Is it continuous?
Go to “LVPS
(Low Voltage
Power
Supply)” on
page 4-4.
Replace the
HVPS/engine
logic board
(page 8-73).
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Duplex Unit PWBA
■ Duplex Unit assembly harness
■ HVPS/engine logic board
■ LVPS harness assembly
■ “Duplex Unit Signal Diagram” on page 10-35
■ “Duplex Unit General Wiring Diagram” on
page 10-34
■ “Duplex Unit Plug/Jack Locator” on page 10-14
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check the duplex unit assembly harness:
1.Remove the duplex unit.
2.Disconnect P/J50 from the duplex unit
PWBA.
3.Test each cable between J2750 <=> J50
for continuity.
Is each cable continuous?
Go to step 2. Replace the
duplex unit
assembly
harness.
Troubleshooting Procedure (continued)
Steps Actions and Questions Yes No