Brother MFC-9420CN Service Manual page 276

I-25 Horizontal white line
Phenomenon
White line appears in the horizontal direction, as shown in
Main Causes
(1) There is a crack at the end of the OPC belt.
Charge brush
Charge brush
Countermeasures
(1) Replace the OPC belt with the one supplied as an accessory, which has a barcode label on the
bottom of its packaging.
Crack at the end
Crack at the end
OPC Belt
OPC Belt
Fig. 9-25
Barcode label
Barcode label
Fig. 9-26
9 - 4 9
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print sample [25] of Fig.9-1.
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