Adjustment / Settings - Canon i900D Service Manual

3.3 Adjustment / Settings

(1) Paper feed motor adjustment
Perform the following adjustments when the paper feed motor is replaced:
1) When attaching the motor, fasten the screws so that the belt is properly stretched (in the direction
indicated by the blue arrow in the figure below).
2) After replacement, be sure to perform the service test print, and confirm that no strange noise or faulty
print operation (due to dislocation of the belt or gear, or out-of-phase motor, etc.) occurs.
Red screws securing
the paper feed motor
Note: The red screws securing the paper feed motor may be loosened only at replacement of the
paper feed motor. DO NOT loosen them in other cases.
(2 ) Gear phase adjustment
In attaching the PR lift cam ge
shaft cam R (QC1-2299) in parallel with the adjust plate R, the protrusion of the lift shaft gear fits into the
recess of the carriage shaft cam R, as shown in the figure below.
ar (QC1-2297), adjust the phase so that, with the even surface of the carriage
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Adjust the phase.
PR lift cam gear
Carriage shaft cam R
Adjust plate R