22 December 1998
MAIN PCBS AND THEIR FUNCTIONS
2-29
Detailed
Descriptions
2.8.3 IOB (INPUT/OUTPUT BOARD)
The IOB contains the drive circuits for the scanner motor and the exposure lamp.
The control signals such as drive and rotation direction, and drive current for the
scanner motor come from the SCU. Also, the control signal for the exposure lamp
comes from the SCU.
The image signals from the SBU go through this board to the SCU.
Scanner
Motor
S B U
H.P Sensor
Lamp
Stabilizer
Operation
Panel
A D U
Exposure Lamp
Scanner
Motor Driver
Driver
Driver
Driver
+ 5V
+ 12V
+ 24V
+ 24V ADU
SCU
I O B
Interlock
Switch
P S U
G411D510.WMF
