Dell 2355DN Service Manual - Page 90

Horzontal Band

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Alignment and Troubleshooting Horzontal Band Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer NO Black band? YES The black NO band has regular interval? YES Black band NO is far about 94.3mm from white band? The OPC is damaged under the direct sunlight for around 5 minutes -> If the same problem persists in 10 hours, replace the drum cartridge Problem of internal contacts in OPC -> Replace the drum cartridge This occurs when no Hsync/ at LSU -> Replace LSU NO 94.3mm interval? YES Does it appear NO at every 83.6mm at specific place? YES Problems of terminal contact, transfer voltage supplying, and transfer roller's due to the charge roller is ruined (38.3mm) -> Repair/replace HVPS, drum cartridge The OPC is damaged due to the irregular transfer voltage of HVPS -> Repair/replace HVPS -> If the same problem persists, replace the drum cartridge Heat roller is ruined -> Replace the roller 4-50 Service Manual

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Alignment and Troubleshooting
4-50
Service Manual
Horzontal Band
NO
Black band?
The black
band has regular
interval?
Black band
is far about 94.3mm from
white band?
Problem of internal
contacts in OPC
-> Replace the drum
cartridge
The OPC is damaged under the
direct sunlight for around 5
minutes -> If the same problem
persists in 10 hours, replace
the drum cartridge
This occurs when no
Hsync/ at LSU
-> Replace LSU
94.3mm interval?
Heat roller is ruined
-> Replace the roller
The OPC is damaged due to
the irregular transfer voltage
of HVPS
-> Repair/replace HVPS
-> If the same problem persists,
replace the drum cartridge
Does it appear
at every 83.6mm at
specific place?
Problems of terminal contact,
transfer voltage supplying,
and transfer roller's due to the
charge roller is ruined (38.3mm)
-> Repair/replace HVPS,
drum cartridge
NO
NO
NO
NO
YES
YES
YES
YES
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer