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Cassette pickup
The product picks up one sheet of paper from the cassette. The following figure shows the cassette
pickup mechanism. Both trays have the same mechanism.
Figure 1-28
Cassette pickup clutch
Cassette pickup roller
The operational sequence of the cassette pickup is as follows:
1.
The DC controller rotates the drum motor when it receives a print command from the formatter.
2.
The feed roller rotates.
3.
The cassette pickup solenoid is driven at a specified timing.
4.
The cassette pickup roller rotates and picks up the top paper.
5.
The cassette separation roller removes any multiple-fed sheets.
6.
One sheet of paper is fed into the product.
Cassette media-size detection and cassette-presence detection
The DC controller determines the size of the paper loaded in the cassette and also whether the cassette
is installed in the product by monitoring the cassette media-width switch and the cassette media-end
switch.
The cassette media-width switch and the cassette media-end switch contain three sub-switches each. The
DC controller detects the size of paper and the presence of the cassette according to the combination
of the switches and notifies the formatter.
38
Chapter 1 Theory of operation
Cassette pickup mechanism
DC controller
M1
Drum motor
CL
Feed roller
Cassette separation roller
ENWW
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Troubleshooting
