Brother HL-2600CN Service Manual page 337

I-9 Black Line / Blur in the Image
Phenomenon
Fine black line or blur appears in the printed image as shown in
2.
Main Causes
1) The corona wire of the charger unit is dirty.
2) OPC belt surface is damaged.
3) Foreign particles (paper dust, etc.) are stuck between the cleaning blade and OPC
belt.
4) Debris adhering to the base of the toner cartridge's developer roller where it contacts
with the OPC belt.
Countermeasures
1) Remove the OPC belt cartridge.
1-1) Clean the charger unit (corona wire). (See
1-2) Replace the OPC belt cartridge with a new one. (See
2) Clean the surface of the developer roller.
I-10 Vertical Line
Phenomenon
Vertical line appears in the printed image as shown in
Main Causes
1) Foreign particles (dust, etc.) adhering to the parts located around the transfer drum 2,
and consequently in contact with the toner image on the transfer drum 2.
Countermeasures
1) Clean the paper discharger unit. (See
2) Clean the charger unit (corona wire) of the OPC belt cartridge. (See
Chapter VI.)
3) Remove the drum cleaner 2, and then, clean the inside and outside of waste toner
feeder.
4) Clean the separator pawl.
Section 1.2.3 of Chapter
Section 2.1 of Chapter
print sample (10) of
Section 1.2.3 of Chapter
print sample (9) of Fig.8-
VI.)
VI.)
Fig.8-2.
VI.)
Section 1.2.4 of