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Appendix
A.1.2 Engine Controller Board (MCU PWB Board)
Pin No.
2
3
4
5
6
7
8
9
10
12
13
14
Pin No.
2
3
4
5
6
7
9
10
11
12
13
Pin No.
2
3
4
5
6
7
8
9
10
11
12
A-12
Table A-10.
Pin Assignments
Signal Name
o
—
SG
I
—
SG
—
—
—
SG
—
—
—
—
—
TEMP.
—
SG
Table A-n.
Pin Assignments
Signal Name
o
DATA
—
MO
o
0
—
SG
—
o
0
—
SG
—
S M ON
—
—
Table A-12
Pin Assignments
Signal Name
—
I
—
SG
—
o
1.T.S
0
—
o
0
Description
Heater ON
Ground
Voltage drop signal
Ground
for ROS unit
+5
Ground
Ground
Ground
+24
+24
Fuser temperature
Description
Laser diode
data
+5
Output level of laser diode
Laser diode power adjustment 2
Laser diode power adjustment
Ground
+5
Scanner motor speed control 2
Scanner motor speed
Ground
motor on
+24
No paper of 1 et cassette
+5
No paper of 2nd cassette
Ground
Paper size of Ist cassette
Paper size of 2nd cassette
+24
Tern solenoid on of let cassette
Tern solenoid on of 2nd cassette
+24
Feed solenoid of 1
Feed solenoid of 2nd cassette
Service Manual
2
Rev.
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