Xerox Phaser 4510 - Page 172

4-18 Phaser 4500/4510 Service Manual
General Troubleshooting
3 Check the power to registration sensor:
1.Remove the print cartridge.
2.Measure the voltage across P/J24-9 <=>
P/J24-10 on the HVPS/engine logic
board.
Is the voltage about 3.3 VDC?
Go to step 4. Go to step 6.
4 Check the chute assembly harness:
1.Disconnect P/J24 from the HVPS/engine
logic board.
2.Disconnect P/J245.
3.Test the following for continuity:
■ J24-9 <=> J245-10
■ J24-10 <=> J245-9
■ J24-11 <=> J245-8
Is each conductor continuous?
Go to step 5. Replace the
chute
assembly
harness.
5 Check the tray 1 assembly harness:
1.Remove the registration sensor
(page 8-20).
2.Disconnect P/J245.
3.Test the following for continuity:
■ P/J245-4 <=> P/J241-3
■ P/J245-5 <=> P/J241-2
■ P/J245-6 <=> P/J241-1
Is each conductor continuous?
Go to step 7. Replace tray
1 assembly
harness.
6 Check the HVPS/engine logic board:
1.Disconnect P/J11 from the HVPS/engine
logic board.
2.Test P/J11-16 <=> P/J24-9 for continuity.
Is it continuous?
Go to “LVPS
(Low Voltage
Power
Supply)” on
page 4-4.
Replace the
HVPS/engine
logic board
(page 8-73).
7 Check the registration sensor:
Replace the registration sensor
(page 8-20).
Does the problem occur after
replacement?
Replace the
HVPS/engine
logic board
(page 8-73).
Problem
solved.
Troubleshooting Procedure (continued)
Steps Actions and Questions Yes No