HL-5130/5140/5150D/5170DN SERVICE MANUAL
6-41
I-21 Horizontal lines
Possible cause Step Check Result Remedy
Ground
contacts
Paper feed roller 1 Are the feed roller shaft and
the ground contact connected
correctly?
No Check the connection
between the shaft and
the ground contact.
Also check the ground
contact on the back of
the feed roller.
Paper tray
contacts
2 Are the ground contacts on the
back side of the paper tray
connecting correctly?
No Clean the contacts.
(7)
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