Dell 2355DN Service Manual - Page 91

Irregular Density, > Replace LSU

Page 91 highlights

Irregular Density Alignment and Troubleshooting OK after taking out and NO rocking the toner cartridge? YES When gray pattern printing, NO irregular density persists? YES transfer/ charge/developing NO Defective agitator in the toner supplying part voltage drops while of the toner cartridge printing? ->Replace the toner cartridge Check if the 'guide deve YES spring' works OK and repair/repalce Check high voltage output and repair/ replace terminals, HVPS It is over the guaranty life of toner cartridge (Check the counter and replace it) Bad images NO around the no image area? YES Irregularity of toner supply from the toner cartridge -> Replace the toner cartridge Light distortion due to the mirror ruined or LSU's diffused reflection -> Replace LSU 4-51 Service Manual

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Alignment and Troubleshooting
4-51
Service Manual
Irregular Density
OK after
taking out and
rocking the toner
cartridge?
It is over the guaranty
life of toner cartridge
(Check the counter
and replace it)
When gray
pattern printing,
irregular density
persists?
transfer/
charge/developing
voltage drops while
printing?
Defective agitator in
the toner supplying part
of the
toner cartridge
->Replace the
toner cartridge
Check if the 'guide deve
spring' works OK and
repair/repalce
Check high voltage
output and repair/
replace terminals, HVPS
Bad images
around the no image
area?
Irregularity of toner
supply from the
toner cartridge
-> Replace the
toner cartridge
Light distortion due to
the mirror ruined or
LSU's diffused reflection
-> Replace LSU
NO
NO
NO
NO
YES
YES
YES
YES