Controlling The Pickup Motor (M2); Outline - Canon GP605 Service Manual

CHAPTER 7 PICK-UP/FEEDING SYSTEM
C.

Controlling the Pickup Motor (M2)

1.

Outline

Table 7-201 shows the functions of the pickup motor control circuit, and Figure 7-204 is a
block diagram of the circuit.
Item
Supplies 38 V from the relay PCB.
Power supply
Signal (M2-ON) from the DC controller PCB.
Drive signal
Operating/driving See Figure 7-201.
assembly
On/off control
Control
Constant speed control
Error code "E015"
Error detection
Relay
PCB
DC controller
PCB
7-6
COPYRIGHT © 1999 CANON INC.
Table 7-201
J1721
38V
11
GND
12
J513
0V
A5
5V
A4
M2_ON
A3
M2_FG
A2
0V
A1
When the pickup motor starts to
rotate, the pulse signal goes '1'.
When the pulse signals goes '0',
error code "E015" is indicated.
Figure 7-204
Description
J621
1
Drive circuit
2
J622
1
2
Control
3
circuit
4
5
When the M2 drive signal goes '1',
the pickup motor starts to rotate.
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Pickup motor
(M2)
Clock pulse
generation
circuit
Reference
signal
generation
circuit