Irregular Density - Ricoh B174 Service Documentation

Irregular Density

B174T929.WMF
OK after
No
taking out and rocking
the toner
cartridge?
Yes
The guaranteed life of the
toner cartridge is over
(Check the counter and
replace it)
SM
When
No
printing a gray pattern,
irregular density
persists?
Yes
PTL lamp
No
(Quenching lamp)
works OK?
Yes
No
Any dust
on the PTL lamp?
Yes
Clean the window of the
PTL
4-19
TROUBLESHOOTING
Transfer/
No
charge/development
voltage drops while
printing?
Yes
Check the high voltage
output and repair/
replace terminals, HVPS
Replace the lamp
Bad images
No
around no-image
areas?
Yes
Light distortion due to a
defective mirror or
diffused reflection from
the LSU
→ Replace the LSU
Defective agitator
in the toner supply
mechanism
→ Replace the
toner cartridge
Irregular toner
supply
→ Replace the
toner cartridge
B174T910.WMF
B174