Xerox Phaser 6280 Service Manual page 254

Error Messages and Codes
3-118
Troubleshooting Procedure Table (continued)
Step Actions and Questions
5 Check the Regi Clutch Sensor Harness
for continuity.
1. Disconnect P/J20 from the MCU
Board and P/J201 from the K Mode
Sensor.
2. Check continuity between P/J20 <=>
P/J201.
6 Check the K Mode Sensor signal.
1. Disconnect P/J20 from the MCU
Board.
2. Is there +3.3 V across ground <=>
J20-1 pin on the MCU Board?
7 Check the K Mode Sensor for
operation.
Note: Be sure to keep P/J201 and P/
J24 connectors connected.
1. Remove the K Drive Assembly
(page 8-76).
2. Perform the K Mode Sensor test
(page 4-64): Service Mode >
Engine Diag > Sensor Test
Mode SNR. During the test, close
the Front Cover.
3. Does the voltage change when a
piece of paper is inserted into the
gap of the K Mode Sensor?
8 1. Check the wiring harness
connectors P/J24 and P/J241
between the MCU Board and the K
Mode Solenoid.
2. Are the connectors securely
connected?
Does the error still occur?
9
10 Check the K Mode Solenoid signal.
1. Disconnect P/J24 from the MCU
Board.
2. Is there +24 V across ground <=>
J24-1 pin on the MCU Board when
the Interlock Switch is activated?
Check the K Mode Solenoid for
11
resistance.
1. Disconnect P/J24 from the MCU
Board.
2. Is the resistance across J24-1 and
J24-2 about 80 to 110 ohm?
Yes
Go to step 6.
Go to step 7.
Replace the
MCU Board
(page 8-86).
> K
Go to step 10.
Go to step 10.
Go to step 11.
Replace the
MCU Board
(page 8-86).
Phaser 6280 Color Laser Printer Service Manual
No
Replace the K
Drive Assembly
(page 8-76).
Replace the
MCU Board
(page 8-86).
Replace the K
Drive Assembly
(page 8-76).
Reconnect the
connectors.
Go to step 9.
Complete.
Replace the
MCU Board
(page 8-86).
Replace the K
Drive Assembly
(page 8-76).