Xerox Phaser 6280 Service Manual page 204

Error Messages and Codes
3-68
Troubleshooting Procedure Table (continued)
Step Actions and Questions
4 1. Perform the CRU Sensor test:
Service Mode >
Sensor Test > CRU
Yellow CRU Sensor (page 4-32)
Magenta CRU Sensor (page 4-33)
Black CRU Sensor (page 4-34)
Cyan CRU Sensor (page 4-35)
2. Does the number on the Control
Panel increase by 1 when the Print
Cartridge is reseated?
5 1. Check the Toner Sensor wiring
harness connectors between the
Print Cartridge Sensor and the MCU
Board.
Yellow: P/J19 and P/J191
Magenta: P/J19 and P/J192
Black: P/J19 and P/J193
Cyan: P/J19 and P/J194
2. Are the connectors securely
connected?
Does the error still occur?
6
Check the Toner Sensor Harness for
7
continuity.
1. Disconnect P/J Harnesses from the
MCU Board and the Print Cartridge
Sensor.
Yellow: P/J19 and P/J191
Magenta: P/J19 and P/J192
Black: P/J19 and P/J193
Cyan: P/J19 and P/J194
2. Check continuity between P/J
connectors:
Yellow: P/J19 <=> P/J191
Magenta: P/J19 <=> P/J192
Black: P/J19 <=> P/J193
Cyan: P/J19 <=> P/J194
Check the Print Cartridge Sensor
8
signal.
1. Disconnect P/J19 from the MCU
Board.
2. Is there +3.3 V across the Toner
Sensor Harness?
Yellow: J19-1 pin <=> J19-2 pin
Magenta: J19-4 pin <=> J19-5 pin
Black: J19-7 pin <=> J19-8 pin
Cyan: J19-10 pin <=> J19-11 pin
Yes
Replace the
Engine Diag > MCU Board
Sensor. (page 8-86).
Go to step 6.
Go to step 7.
Go to step 8.
Go to step 9.
Phaser 6280 Color Laser Printer Service Manual
No
Go to step 5.
Reconnect the
connectors.
Go to step 6.
Complete.
Replace the
Toner Sensor
Harness.
Replace the
MCU Board
(page 8-86).