The Cause And Solution Of Bad Image - Samsung ML-3471ND/XAX Service Manual

Adjustment and Troubleshooting

4.2.2 The cause and solution of Bad image

1) Vertical Black Line and Band
Description: 1. Straight thin black vertical line occurs in the printing.
2. Dark black vertical band occur in the printing.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
the Toner cartridge. Deformed Doctor-blade
the charge roller in the toner cartridge.
Service Manual
4-24
1. Damaged develop roller in
or cleaning-blade.
2. Scratched surface of
3. Partly depression or
deformation on the surface of
the transfer roller.
If causes 1 and 2 occur in the
toner cartridge, replace the toner
cartridge and try to print out.
Replace the transfer roller if
occurred as No. 3.
Samsung Electronics