Level Of Second Side Cis Scan Result Is Detected As Abnormal During Fax Transmission (First Transmission.); Af Cis Positioning Abnormal (Home Position Cannot Be Found) - Brother DCP-J4110DW Service Manual

Error Code AC

Unable to Scan AC
Level of second side CIS scan result is detected as abnormal during FAX transmission (First
transmission.)
Step
1 White level data failure
2 White reference film stained
3 Second side CIS unit defective
4 White reference film damage,
broken
5 Main PCB defective
Error Code AF

Unable to Scan AF
CIS positioning abnormal (Home position cannot be found.)
Step
1 Scanner belt out of place
2 Scanner motor harness connection
failure
3 First side CIS flat cable
connection failure
4 Black reference film stained
5 First side CIS flat cable defective
6 First side CIS unit defective
7 Scanner motor defective
8 Main PCB defective
Cause
Carry out maintenance 55 to obtain white label data.
Clean the white reference film of the document
scanner unit.
Replace the second side CIS unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
Cause
Set the scanner belt into place.
Reconnect the scanner motor harness.
Reconnect the first side CIS flat cable.
Clean document cover glass at black reference film.
Replace the first side CIS flat cable.
Replace the first side CIS unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
2-53
LCD
Solution
LCD
Solution
Confidential