Feed Clutches - Xerox Phaser 4500 Service Manual

General Troubleshooting

Feed Clutches

4-30
Troubleshooting Reference
Applicable Parts
Feed clutch
Tray 1 harness
Tray 2 harness
Chute harness
HVPS/engine logic board
LVPS
Troubleshooting Procedure
Steps Actions and Questions
Check the chute harness:
1
1. Disconnect P/J24 from the HVPS/engine
logic board.
2. Test for continuity across the following
points:
J24-13 <=> J245-6
J24-12 <=> J245-7
J24-5 <=> J248-1
J24-4 <=> J248-2
Are all continuous?
2 Check the tray 1 and tray 2 harnesses:
1. Remove the feed clutch.
2. Disconnect P/J245 (tray 1 harness) or P/
J248 (tray 2 harness).
3. Test for continuity across the following
points:
Tray 1 harness:
P/J245-8 <=> P/J242-1
P/J245-7 <=> P/J242-2
Tray 2 harness:
P/J248-5 <=> P/J247-1
P/J248-4 <=> P/J247-2
Are all continuous
Check the resistance of the feed clutches:
3
Measure the resistance between:
P/J242-1 <=> P/J242-2 (tray 1 feed
clutch)
P/J247-1 <=> P/J247-2 (tray 2 feed
clutch)
Does the resistance measure 172 ohms +/
-10% (at 20° C)?
Wiring and Plug/Jack Map References
"150-Sheet Feeder, 550-Sheet Feeder, Main
Fan" on page 10-27
"Print Engine Wiring Diagrams" on page 10-19
"Print Engine Plug/Jack Locator" on page 10-3
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Phaser 4500/4510 Service Manual
No
Replace the
chute
harness.
Replace tray
1 or tray 2
harness.
Replace feed
clutch
assembly.
(page 8-19,
page 8-29,
page 8-91)