Ricoh Aficio BP20N, Service Manual

Page: 88 / 144

PRINTOUT PROBLEMS
G144/G145 4-14 SM
4.6.10 GHOST 1
Description: “Ghosting” image defect is visible on the output print at 75.5 mm
intervals.
Cause Solution
1. Bad contacts caused by toner particles
between the high voltage terminal in the
main body, and the electrode of the toner
cartridge.
2. Bad contacts caused by toner particles
between the high voltage terminal in the
main body, and in the HVPS board.
3. The toner cartridge has reached end of
life.
4. Transfer roller has reached end of life.
5. Ambient temperature is below 10 C.
6. Damaged cleaning blade in the toner
cartridge.
1. Clean all HV contacts. Replace the HVPS
if the problem persists.
2. Clean all HV contacts. Replace the HVPS
if the problem persists.
3. Replace the toner cartridge.
4. Replace the transfer roller.
5. Turn the machine off. Wait 30 minutes
and turn the machine on again. Attempt to
print.
6. Replace the toner cartridge.
4.6.11 GHOST 2
Description: “Ghosting” image defect is visible on the output print at 75 mm
intervals.
Cause Solution
Higher voltage required when printing on card
stock, thick paper, or OHP sheets. Set the machine to print for these media
types, via the printer driver or application
software.
4.6.12 GHOST 3
Description : “Ghosting” image defect is visible on the output print at 66.3 or 75.5
mm intervals.
Cause Solution
Fusing unit is contaminated. Disassemble the fusing unit and remove any
matter from the rollers. Clean particles
between the thermistor and the hot roller.
(Use extreme caution to avoid damaging the
rollers.)