Xerox Phaser 4500 Service Manual page 162

General Troubleshooting
4-8
Troubleshooting Procedure (continued)
Steps Actions and Questions
1. Remove the Optional 550-Sheet Paper
4
Feeder.
2. Turn ON the printer power.
Do both fans rotate when the power is
turned ON?
5 1. Remove the duplex unit (page 8-95).
2. Turn ON the printer power.
Do both fans rotate when the power is
turned ON?
1. Remove the HVPS Shield Plate
6
(page 8-72).
2. Verify that P/J10 is connected to the
HVPS/engine logic board.
3. Remove the print cartridge.
4. Check for +24 VDC at the following
points:
P/J10-1 <=> P/J10-4
P/J10-2 <=> P/J10-5
P/J10-3 <=> P/J10-6
P/J10-8 <=> P/J10-7
Does the voltage at each point measure
+24 VDC?
1. Perform steps 1-3 of the 150-sheet
7
feeder assembly removal (page 8-15).
2. Disconnect P/J243 (see the registration
clutch removal on page 8-19).
3. Remove the print cartridge.
Does the main fan rotate when the power
is turned ON?
Yes No
Go to Go to step 5.
"Optional
550-Sheet
Feeder PWBA
(Tray 3)" on
page 4-39,
"Optional
550-Sheet
Feeder PWBA
(Tray 4)" on
page 4-40
"Optional
550-Sheet
Feeder Feed
Clutch
Assembly" on
page 4-46,
and "Optional
550-Sheet
Feeder Turn
Roller Clutch"
on page 4-48.
Go to "Duplex Go to step 6.
Unit PWBA"
on page 4-49,
and "Duplex
Unit Motor"
on page 4-50.
Go to step 7. Go to "Print
Engine
Trouble-
shooting" on
page 4-11.
Go to Go to step 8.
"Registration
Clutch" on
page 4-29.
Phaser 4500/4510 Service Manual