Xerox Phaser 6120

Error Codes and Messages Troubleshooting Procedures
Phaser® 6120 Color Laser Printer Service Manual
4-20
21: OHP Detect Sensor
23: Waste Toner Near Full Error
29: Faulty NVRAM Counter
Relevant Electrical Parts
OHP Sensor (PC2A) PWB-A (Engine Control Board)
Step Action
WIRING DIAGRAM
Control Signal
Location (Electrical
Component)
1 Check the PWB-A connector for
proper connection and correct as
necessary.
--
2 PC2A sensor check. PWB-A PJ12A-6 (ON) 2-D
3 Change PWB-A. - -
Relevant Electrical Parts
Waste Toner Near Full Detection Board (PWB-C)
Imaging Unit
PWB-A (Engine Control Board)
Step Action
WIRING DIAGRAM
Control Signal
Location (Electrical
Component)
1 Check the PWB-C connector for proper
connection and correct as necessary.
--
2 Check the PWB-A connector for proper
connection and correct as necessary.
--
3 Change the Imaging Unit. - -
4 Change PWB-C. - -
5 Change PWB-A. - -
Relevant Electrical Parts
NVRAM PWB-A (Engine Control Board)
Step Action
WIRING DIAGRAM
Control Signal
Location (Electrical
Component)
1 Unplug the power cord and plug it in,
then turn OFF and ON the Power
Switch.
--
2 Check NVRAM (PJ26) on PWB-A for
proper connection and correct as
necessary.
--
3 Change PWB-A. - -