A7 The Cis Unit Type Is Different From The Cis Type Input Value; Matching Of Color Parameter Failed; Cis Positioning Problem (Home Position Cannot Be Found) - Brother MFC Series Service Manual

■ Error Code A7
Unable to Scan A7
The CIS unit type is different from the CIS type input value.
Step
1 CIS type data incompatible
2 Main PCB defective
■ Error Code A8
Unable to Scan A8

Matching of color parameter failed.

<User Check>
- Turn the power OFF and ON by unplugging and plugging the power cord.
Step
1 Program malfunctioning
2 Main PCB defective
■ Error Code AF
Unable to Scan AF
CIS positioning problem. (Home position cannot be found)
Step
1 Failure in automatic setting of
the CIS type
2 Scanner motor harness
connection failure
3 CIS flat cable connection
failure
4 Scanner belt out of place
5 CIS flat cable defective
6 CIS unit defective
7 Document scanner unit
defective
8 Main PCB defective
Cause
Automatically set the CIS type.
(Refer to
Replace the Main PCB ASSY.
Cause
Re-load the firmware.
Replace the Main PCB ASSY.
Cause
Specify the setting of the CIS type manually.
(Refer to
Reconnect the Scanner motor harness.
Reconnect the CIS flat cable.
Reattach the Scanner belt.
Replace the CIS flat cable.
Replace the CIS unit.
Replace the Document scanner unit.
Replace the Main PCB ASSY.
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Solution
Chapter 5, Section 1.4.18)
Solution
Solution
Chapter 5, Section 1.4.18)
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