Xerox Phaser 6300 Service Manual page 119

Troubleshooting Procedure Table (Continued)
Step Actions and Questions
3 Check the Registration Sensor connection.
Is the Registration Sensor connected to the
harness?
4 Check all pins of the REGISNR Harness
PL4.1.4 for continuity.
1. Disconnect P/J181 and P/J18.
2. Check continuity between J181 <=> J18.
5
Check the Registration Sensor signal.
Block the Registration Sensor.
Verify the voltage between P/J18-3 <=>
P/J18-2 on the Engine Control Board is 0
VDC.
6
If possible, print a Test Print from
Tray 1 (MPT).
Does the Main Motor function properly?
7 Test the Main Drive Assembly.
Run the Service Diagnostics Main Motor
test.
Does the Main Motor turn?
8
Check for +24 V to the Main Drive Motor
1. Disconnect P/J481.
2. Close the Interlock Switch while testing.
Is there +24 V across J481-10 <=> J481-8?
9 Test the Interlock Switch.
Run the Service Diagnostics Interlock
Switch test.
Does the Interlock Switch function
correctly?
10 Check for +5 V to the Interlock Switch
Disconnect P/J161.
Is there +5 V across P161-1 <=> P161-2?
11 Check FAN/PHD/MOT Harness continuity.
1. Disconnect P/J48 and P/J481.
2. Check continuity between J48 <=> J481
12 Check Turn Roller function.
1. Perform Steps 1 ~ 3 on (page 8-21).
2. Open and close the front door.
3. Observe the Turn Roller.
Does the Turn Roller turn while the
machine is warming up?
3-18 Phaser 6300/6350 Color Laser Printer Service Manual
Yes
Go to Step 4.
Go to Step 5.
Replace
Registration Sensor
(page 8-36).
Go to Step 16
Replace the Engine
Control Board
(page 8-104).
Go to Step 12.
Go to Step 11.
Replace the LVPS.
Replace Main Drive
Motor
Go to Step 16.
No
Connect the
sensor.
Replace the
Registration
Sensor Harness.
Go to Step 6.
Go to Step 7
Go to Step 8.
Go to Step 9.
Go to Step 10.
Replace the
Interlock Switch
(page 8-101).
Replace FAN/
PHD/MOT
Harness.
Go to Step 13.