FujiFilm CR-IR341 Service Manual page 107

C 1 2
ONTENTS
DRV08A Board
The DRV08A board receives control signals sent from the sensor board (SNS08A) to directly
drive the actuators within the machine.
Control signals from the SNS08A board are transferred through a photocoupler interface.
Main functions are as follows.
I/O name
Pulse motor drive
Power-down solenoid
Solenoid valve
DC pump
DC motor
From SNS08A board
+5 VDC generation
circuit
DRV08A Block Diagram
009-051-04
05.31.99 FM2460
3 4 5 6
I/O drive
24 VDC 10 circuits
24 VDC 6 circuits
24 VDC 1 circuit
24 VDC 1 circuit
24 VDC 2 circuits
15 VDC 1 circuit
Pulse string
Power-down signal
Full-power excitation signal
Power-down excitation signal
Drive signal
Drive signal
Drive signal
CR-IR341 Service Manual
7 8 9 10
TR1H0002.PCT
Pulse motor driver
(STK672-050: Sanyo),
x10 circuits
Power-down
control circuit
Breakdown
protection circuit
Power-down solenoid
drive circuit x3 (power
transistor: MP4504)
Solenoid valve drive
circuit x1 (power
transistor: MP4504)
Pump drive circuit x1
(power transistor:
MP4504)
DC motor drive circuit x3
MD - 44
To each pulse motor
To each solenoid
To solenoid valve
To pump
To each DC motor
FR1H0238.EPS
MD - 44