Adjustment / Settings; Paper Feed Motor Adjustment - Canon PIXMA MP750 Service Manual

3-3 Adjustment / Settings

3-3-1 PAPER FEED MOTOR Adjustment

Perform the following adjustments when the paper feed motor unit 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 unit. DO NOT loosen them in other cases.
3-3-2 CARRIAGE SHAFT Gear Adjustment
In installing a carriage shaft, the gear phase should be adjusted.
(1) Insert the metallic pin shown below to the hole in the PURGE UNIT (see the photo (a) below) (until
it reaches the end).
[Metallic pin]
- Diameter: 2.0 mm or less, and Length: 20.0 mm or more
(Use "CARRIAGE SHAFT L SPRING: HY7-2867", or an unbended clip can be used in place of the
pin.)
(2) With the metallic pin inserted, turn the LIFT GEAR 2 clockwise (in the direction indicated by the
arrow in the photo (b) below) until it reaches the end. (Stop when it cannot turn farther any more.)
Under the conditions above, confirm that the ASF ARM LOCK LEVER is located upward (see Photo
(c)) and the capping section is located at the capping position (see Photo (d)).
Figure 1-16 PAPER FEED MOTOR Adjustment
20.0mm or more 2.0mm or less
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