Dell 2355DN Service Manual page 88

Ghost
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Check HVPS
contacts and
HVPS's self-
NO
output
-> If failed,
repair/replace
HVPS
Service Manual
Alignment and Troubleshooting
Is it regular NO
interval of 94.3mm?
YES
Transfer
voltage is set to
standard?
YES
Bias voltage NO
is OK? (-450V)
YES
NO
Operating/storage
temperature is too low or
not recommended
paper used?
YES
Use the machine with
recommended paper and
at condition
Is it regular
NO
interval of 54.3mm?
YES
Developing
NO
/supplying voltage
normal? (-450V/
-600V)
YES
Irregularity of NIP
between rollers in
toner cartridge
-> Replace toner cartridge
Adjust the Bias voltage
or replace HVPS
There may be a problem in toner
layer control in toner cartridge
-> Replace the toner cartridge
4-48
Is it regular
interval of 56.6mm?
(as transfer roller
interval)
YES
A specific part of the transfer
roller has ruined or its
resistance value is changed
-> Replace transfer roller
Transfer roller cannot force
regularly due to the gears
eccentricity of transfer roller
-> Replace the defective
component
- Repair or replace HVPS
- Check and Repair or
replace the terminal
contacts