Removal Of Red Screws Prohibited; Installing The Logic Board Cover - Canon S520 Service Manual

Part 2: Troubleshooting

3.3.6 Removal of red screws prohibited

Since adjustment of the following red screws is very difficult in the field, they must
not be loosened or removed.
(a) The two paper spacing red screws (one on the right and left).
(b) The two screws securing the paper feed motor (S750 only)
a

3.3.7 Installing the logic board cover

If the logic board cover is installed incorrectly, the logic board and paper feed rollers
will be obstructed and the ASF motor may go out of sync.
Note that prong A is prone to engage incorrectly. Make sure that it fits in properly.
A
b
Figure 2-7 Do not Remove the Red Screws
Figure 2-8 Installing the Logic Board Cover
2-18
S900 / S820 / S750 / S520
a