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October 9th, 1995
1.4. ELECTRICAL COMPONENT LAYOUT
1.4.1. Scanner
11
10
9
8
7
No.
Name
Home position sensor
1
2
PSU
3
Xenon lamp
SDU
4
5
Scanner motor
6
SDP
SBU
7
MBU
8
SCU
9
Platen cover interlock
10
switch
ADF exposure cover
11
interlock switch
OVERALL MACHINE INFORMATION
ELECTRICAL COMPONENT LAYOUT
Function
Detects whether the first carriage is at the home
position.
This provides +24 V, ±5 V, and +12 V dc to the MBU.
This illuminates the document.
This contains a motor driver circuit and xenon lamp
stabilizer.
This drives the carriages.
This contains the scanner indicator lamps.
This contains a CCD and converts the light reflected
from the original into a video signal.
This contains circuits for dc power distribution and
interfaces with other boards.
This contains a CPU, an interface circuit, and other
circuits.
Detects whether the platen cover is open or closed,
and cuts the power supply to the machine.
Detects whether the ADF exposure cover is open or
closed, and cuts the power supply to the machine.
1-7
1
2
3
5
6
g404v506.wmf
4
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