Brother HL-2600CN Service Manual page 338

I-11 Vertically Staggered Image
Phenomenon
Printed image staggered in the vertical direction as shown in
Main Causes
1) Shock or vibration applied to the printer.
2) Failure of the optical unit 2; Vibration from rotation of the scanner motor.
Countermeasures
1) Do not apply shock or vibration to the printer body.
2) Installation location should be appropriate with no possibility of shock or vibration.
3) Replace the optical unit 2 with a new one. (See
I-12 Banding
Phenomenon
Banding line appears in the horizontal direction as shown in
Main Causes
This is a transfer failure due to the shock caused when the OPC belt seam passes over
the cleaning blade.
Countermeasures
Replace the OPC belt cartridge with a new one. (See
Belt seam
Fig.8-8
print sample (11) of
Section 4.5.1 of Chapter
print sample (12) of
Section 2.1 of Chapter
Fig.8-2.
VII.)
Fig.8-2.
VI.)