Troubleshooting
4-11
OK after
taking out and
rocking the toner
cartridge?
Check if printer mode is
econo mode
-> select normal mode.
It is over the guaranty
life of toner cartridge.
(Check the counter
and replace it.)
When gray
pattern printing,
irregular density
persists?
PTL lamp
works OK?
Any obstacles
on the PTL lamp?
Transfer/
charge/developing
voltage drops while
printing?
Defective agitator in
the toner supplying part
of developer.
->Replace the developer.
Check if the 'guide deve
spring' works OK and
repair/repalce.
Check high voltage
output and repair/
replace terminals/HVPS.
Replace lamp.
Clean the window of PTL.
Bad images
aroung the no image
area?
Irregualrity of toner
suppy from developer.
-> Replace developer.
Light distortion due to
the mirror ruined or
LSU's diffused reflection.
-> Replace LSU.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
4-3-9 Irregular Density
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