Xerox Phaser 6250 Service Manual page 116

Troubleshooting Procedure Table (Continued)
5
Is the voltage between P/J18-3 <=> P/
J18-2, located under the electric housing
assembly (see page 8-71) on the Engine
Control Board is 0 VDC.
6 If possible, print a sheet of paper from
Tray 1.
Does the Main Drive Motor function
properly?
7
Use service diagnostics to test the Main
Drive Motor.
Does the Main Drive Motor turn?
8 Verify the voltage between P/J50-1 <=>
P/J60-2 on the Motor Driver Board is
+24 VDC
9 Use service diagnostics to test the
Interlock Switch.
Does the Interlock switch function
correctly?
10 Verify the voltage between SW-1 <=>
P/J60-2 and SW-2 <=> P/J60-2 on the
Motor Driver Board is +24 VDC.
Close the Interlock Switch.
11 Check the power supply by verifing the
voltage between P/J60-1 <=> P/J60-2 on
the Motor Driver Board is +24 VDC.
12 Check the power supply by verifing the
voltage between P/J61-8 <=> P/J61-7 on
the Motor Driver Board is +5 VDC.
13 Check the power supply by verifing the
voltage between P/J61-6 <=> P/J61-5 on
the Motor Driver Board is +3.3 VDC.
14 Check the LVNC3 Harness for continuity.
See "Main Wiring Diagram" on
page 10-15.
15 Check the DRV 1 Harness for continuity.
See "Drive Section" on page 10-18.
3-34 Phaser 6250 Color Laser Printer Service Manual
Replace
Registration
Sensor,
page 8-73.
Go to Step 16.
Replace the
Engine control
Board,
page 8-107.
Go to Step 12.
Go to Step 10.
Replace the ,
Motor Driver
Board,
page 8-101.
Replace the Motor
Driver Board,
page 8-101.
Go to Step 13.
Go to Step 15.
See "DC Power
Supply
Troubleshooting"
on page 4-13.
Replace in the
following order:
Main Drive
Assembly,
page 8-94
Engine Control
Board,
page 8-107.
Go to Step 6.
Go to Step 7.
Go to Step 8.
Go to Step 9.
Replace the ,
Motor Driver
Board,
page 8-101.
Go to Step 11.
See "DC Power
Supply
Troubleshooting"
on page 4-13.
Go to Step 14.
Go to Step 14.
Replace the
Harness LVNC3
PL 13.1.1.
Replace the
DRV 1 Harness
Assembly,
PL 13.1.1