vi. Repetitive small marks or defects
This may be caused due to toner spillage inside printer
or due to crack in the drum which can accumulate toner and
the solution to this is to replace the offending roller
vii. Image Smudging
Image smudging is called when the image on the paper
comes off when thumb is run across it , and the problem
in this case is fuser. The fuser is not heating the toner
and fusing it into the paper and the solution is to replace
Dot-Matrix printer problems
i. Print results are too light
The probable cause for this could be that ribbon cartridge
is out of ink and the solution is to replace the ink ribbon.
ii. Printer does not print
The possible causes for this could be printer is offline
or is out of paper, or is not connected. The solution is to
turn printer online or add paper or check the cable connections.
iii. Characters are incomplete
This may happen due to pins which may be struck or broken
and the solution is to replace the print head.
iv. Printout jams inside the printer
This happens when something prevents the paper from advancing
through the printer. There are two reasons for this. One is
obstructed paper path which requires disassembling the printer
to find the substance that's blocking the paper path and the
second may be due to stripped drive gears.
v. Stepper motor problems
Stepper motors are used to move the printhead back and forth
as well as to advance the paper and they can easily get damaged
when they are forced in any direction while the power is on.
While it is easy to detect a damaged stepper motor, the only
solution to this is to replace the stepper motor.
Scanner problems and troubleshooting
Common problems with scanner are scanners won't turn on,
strange noises from scanner, Scanners won't scan etc.
Tips to troubleshoot the basic scanner related problems are:
- Ensure that the scanner software is properly installed
and all the settings are properly configured
- Make sure that the power light on the scanner is turned
- If any software related problems are noticed in scanner
then uninstall and reinstall the scanner software
- Try to perform the basic tests that are provided by
- Make sure that the cables to the scanner are properly
- Overheating, dust and humid environment can cause permanent
damage to the scanner.
- Restarting your computer, unplugging cables and verifying
any hardware conflicts in the device manager can diagnose
and troubleshoot the possible errors.