2WIRE F-116P User Manual

Page of 150
Alignment and Troubleshooting
4-27
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.
3. Partly depression or 
deformation on the surface of 
the transfer roller.
2. Scratched surface of 
the charge roller in the toner cartridge.
1. Damaged develop roller in 
the Toner cartridge. Deformed Doctor-blade 
or cleaning-blade.
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.