CHAPTER 6 TROUBLESHOOTING
6-50
I-18 Gray background
Possible cause Step Check Result Remedy
Print paper 1 Does the paper being used
meet the paper specification
(weight, etc.).
No Recommend to use the
specified types of paper.
Yes Recommend to change to
freshly unpacked paper.
Toner sensing
failure
(printer side)
2 Does the “Ready” message
appear on the LCD display
even after removing the drum
unit and toner cartridge?
Yes Toner sensor failure. Clean the
toner sensor and check the
toner sensor connection.
Toner cartridge
failure
3 Is the problem solved after
replacing the toner cartridge?
Yes Replace the toner cartridge.
Drum unit failure 4 Is the problem solved after
replacing the drum unit?
Yes Replace the drum unit.
No Replace the high-voltage power
supply PCB.
NOTE:
The following cases increase the possibility of this problem.
• Acid paper is being used.
• The drum unit is at the end of its life.
• There is dust or paper powder.
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