Brother MFC-9420CN - Page 305

Confidential
9-49
I-25
Horizontal white line
Phenomenon
White line appears in the horizontal direction, as shown in print sample [25] of Fig.9-1.
Main Causes
(1) There is a crack at the end of the OPC belt.
Charge brush
OPC Belt
Crack at the end
Fig. 9-25
Countermeasures
(1) Replace the OPC belt with the one supplied as an accessory, which has a barcode label on the
bottom of its packaging.
Barcode label
Fig. 9-26
Barcode label
Charge brush
Crack at the end
OPC Belt