1. Copy or fax out not clear result, what can I do?
- It may caused by scanner dirty
2. Printing or Copy or Fax receive, the print out with horizontal black line, what can I do? (For Laser series)
- It may cuased by drum unit dirty:
3. Printing or Copy or Fax receive, the print out not clear, what can I do (For Laser series)
- It may caused by Laser unit glass dirty
4. How to print envelope? (Envelope always jam/ crease when print with my laser printer)



