Cassette Pick-Up Unit; 1Outline; 2Retry Pickup - Canon iR1200 Series Service Manual

7.3 Cassette Pick-Up Unit

7.3.1 Outline
Paper is picked up from the cassette under the control of the CPU on the DC controller PCB and using the drive of
the main motor (M1). When the cassette pickup solenoid (SL2) goes ON, the drive of the main motor (M1) is
transmitted to the cassette pickup roller assembly to rotate the cassette pickup roller.
When the cassette pickup roller rotates, a single sheet of paper is separated from the stack by the separation claws of
the cassette, and is sent as far as the registration shutter by way of the vertical path roller.
Main motor
7.3.2 Retry Pickup
If the paper leading edge sensor (PS102) does not detect paper within a specific period of time after the cassette
pickup roller has started to rotate, the machine will start to rotate the cassette pickup roller once again to execute a
retry pickup operation.
If the paper leading edge sensor (PS102) still does not detect paper within a specific period of time after the machine
executes a retry pickup operation once, the machine will identify the condition as a jam and will indicate a jam
message on the LCD.
DC controller PCB
Gear B
Gear A
SL2
When SL2 goes ON, the spring will turn
the pickup roller slightly with the result
that the gear A engages with the gear B.
F-7-3
Cassette pickup rollers
Paper
Spring
Chapter 7
0006-2887
0006-2889
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