4 ] Print Head Mechanism - Brother MFC640CW Service Manual

Defective component
Maintenance unit
Head caps or
wiper
Purge pump
Purge cam switch

[ 4 ] Print head mechanism

Defective component
Head/carriage unit
- Any of the following images may appear on the
printout of sent, copied, or scanned data:
- The purge pump will not draw out ink from the head
nozzles.
- The purge cam switch will not detect the purge cam
ON/OFF timing.
- Any of the following images may appear on the
printout of sent, copied, or scanned data:
9 - 4 4
Result
Result
Error codes
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50, 51, 52
Error codes
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