Canon DADF-M1 Service Manual - page 53
Chapter 2
2-31
The machine is supplied with 2 types of power by the host machine 24 V and 13 V. The 24-V power is mainly used to drive loads (motor, clutch, solenoid), while
the 13-V power is converted into 5 V by IC10 (DC-DC converter) for use by sensors and the ADF controller PCB.
Unlike other models, the machine will remain supplied with power even when its feeder cover is opened.
F-2-42
2.9 Stamp Operation
2.9.1 Overview
0003-7021
When the host machine is in fax mode and its stamp function is selected, the machine will put a stamp in response to a command from the ADF drive PCB to
indicate that the original in question has been read or transmitted.
F-2-43
When the trailing edge of the original leaves the platen downstream roller and has moved ahead 3 mm, the machine accelerates the delivery reversal motor from
reading speed to 650 mm/sec; on the other hand, it starts to decelerate the motor when the trailing edge of the original is at a point 47.1 mm from the platen down-
stream roller (from 650 mm/sec) for stopping the original. The machine holds the original in place for 100 msec, during which it turns on the stamp solenoid (SL2)
to print a stamp about 6 mm from the trailing edge of the original.
F-2-44
MEMO
A new stamp cartridge is good for about 7,000 stamps and you can find out how many times it has been used using the following service mode item. When you
have fitted a stamp, be sure to execute the following so that the machine will recognize its presence: FEEDER>OPTION>STAMP-SW.
DC5V
Power supply
IC10
2
1
J312
J305A
24V
13V
5V
24V
motor
clutch
solenoid
sensor
Host machine
ADF driver PCB
Stamp solenoid dr
iv
e signal
STMP_SOL
ADF driver PCB
Original
Stamp solenoid
(SL1)
6mm
12.7mm
44.1mm
48.8mm
55.5mm
650mm/s
234mm/s
100ms
End of read
End of delivery
Read sensor (PI8)
Delivery motor (M3)
Delivery reversal sensor (PI9)
Stamp solenoid (SL1)