Xerox Phaser 4510 - Stacker Rear Cover Switch

4-58 Phaser 4500/4510 Service Manual
General Troubleshooting
Stacker Rear Cover Switch
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Rear cover switch
■ Rear cover assembly harness
■ Stacker PWBA
■ Stacker harness 2
■ HVPS/engine logic board
■ LVPS
■ Stacker harness 1
■ “Stacker Signal Diagram” on page 10-37
■ “Stacker General Wiring Diagram” on
page 10-36
■ “P4500: 24 V Interlock, Rear Cover Switch,
Main Motor, Sub Fan, Exit Motor Assembly” on
page 10-21
■ “Stacker Plug/Jack Locator” on page 10-16
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check the rear cover switch (1):
1.Remove the rear cover switch.
2.Test for continuity across J740-2 <=>
J740-1 while pushing and releasing the
stacker rear cover switch.
Is the switch continuous when pushed,
and open when released?
Go to step 2. Replace the
rear cover
switch.
2 Check the rear cover harness:
1.Remove the rear cover harness.
2.Test J74 <=> J740 for continuity.
Is the harness continuous?
Go to step 3. Replace the
rear cover
harness.
3 Check stacker harness 2:
1.Disconnect P/J70 from stacker PWBA.
2.Remove stacker harness 2.
3.Test J70 <=> J3070 for continuity
Is the harness continuous?
Go to step 4. Replace
stacker
harness 2.
4 Check stacker harness 1:
1.Remove stacker harness 1.
2.Test J30 <=> J3070 for continuity
Is the harness continuous?
Go to step 5. Replace
stacker
harness 1.
5 Check the rear cover switch (2):
Measure the voltage across P/J30-4 <=> P/
J30-3 on the HVPS/engine logic board.
Does the voltage measure +3.3 VDC?
Go to
“Stacker
PWBA” on
page 4-54.
Go to step 6.
6 Check the HVPS/engine logic board:
1.Disconnect P/J30 from the HVPS/engine
logic board.
2.Test P30-4 <=> P11-16 for continuity.
Is it continuous?
Replace the
HVPS/engine
logic board
(page 8-73).
Go to “LVPS
(Low Voltage
Power
Supply)” on
page 4-4.