Canon MP640 Service Manual page 3

4-4. Special Notes on Servicing
(1) For smeared printing, uneven printing, or non-ejection of ink
(2) Paper feed motor adjustment
(3) Carriage unit replacement
(4) Document pressure sheet (sponge sheet) replacement
(5) Ink absorber counter setting
4-5. Verification After Repair
(1) Standard inspection flow
(2) Service test print
(3) Ink absorber counter value print
5. MACHINE TRANSPORTATION
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