Ricoh Aficio BP20N, Service Manual

Page: 101 / 144

TONER CARTRIDGE
SM 4-27 G144/G145
Trouble-
shooting
“Ghost” image and
other contamination
• Print out is too light
or dark, or, partially
contaminated.
•
A completely black
page is printed out.
•
Printout density is
too dark and
“ghosting” occurs.
1. Check the following if the printout is too
light, too dark, or partially contaminated:
1) Check if unwanted matter remains on
terminal contact points of the cartridge
set.
2) Ensure that the terminal is correctly
assembled.
•
Perform the following, if the above are
true:
1) Clean the contacts on the toner
cartridge.
2) Clean the contact points on the set.
3) Repair or replace the terminals if they
are damaged. Replace the toner
cartridge if the problem persists.
2. Check the following if a black image is
printed out:
1) Check if unwanted matter remains on
terminal contact points of the cartridge
set.
2) Check if the terminal and charge roller
contacts are correctly assembled.
•
Perform the following if the above are
true:
Examine the charge roller contacts. Clean
them if they appear dirty or contaminated.
Replace the toner cartridge if the problem
persists.
3. Check the following if the printouts are too
dark and ghosting occurs:
1) Check if unwanted matter remains on
terminal contact points of the cartridge
set.
2) Check if the terminal and developer
roller contacts are correctly
assembled.
•
Perform the following if the above are
true
1) Check the developer bias voltage
contact. Clean it if it appears dirty or
contaminated.
2)
Examine the charge roller contacts.
Clean them if they appear dirty or
contaminated.