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Diagnostic Information 2-11
5055-01x
933 - Black Printhead Error
934 - Color Drum Sensor Error
Step
Questions /
Actions
Yes No
1 Is fuse 4 on the
printhead control
board open?
Replace the
printhead control
board, cables, and
LED printhead.
Replace the
printhead
controller board.
934 Service
Drum Sensor
Step
Questions /
Actions
Yes No
1 Is connector CN28
connected properly?
Go to step 2. Plug the connector
in securely.
2 Clean the color drum
sensor LED. Did this
fix the problem?
Problem solved. Replace the color
drum sensor.
Go to step 3.
3 Did replacing the
color drum sensor fix
the problem?
Problem solved. Replace the
printer controller
board.
Service.bk Page 11 Thursday, October 4, 2001 12:20 PM