Appendix
LQ-300 Service Manual
Table A-1. Connector Summary
Board
I
Connector
MAIN
E
CNI
Board
Assembly
CN2
CN3
I-+5
t--++
P
CN8
CN9
CN1O
CNI1
t-
CN12
CN13
Function
Pins
I
Parallel, serial interface
26
CR motor
5
PF motor
5
PSB/PSE board assembly
5
Printhead
15
Printhead
17
PE sensor
2
HP sensor
2
Release lever
Dosition
sensor
2
PG
sensor
2
CS
motor (optional)
Color ribbon sensor
(orMional)
10
CS
motor (optional)
Color ribbon sensor (optional)
10
CS motor (optional)
Color ribbon sensor (optional)
10
Table A-2. Connector Pin Assignments - CN2
i
I
I I
1
Pin
I
l/O
)
Signal
Name
\
Function
1
0 CR A
CR motor phase
A
2
0
CR B
CR motor phase
B
3
—
CRCOM CR motor common
4
0
CR–A
CR motor phase –A
5
0
CR-B
CR motor phase –B
Table A-3. Connector Pin Assignments -
CN3
Pin
I/o
Signal
Name
Function
1
0
PF A
PF motor phase A
2
0
PF B
PF motor phase B
3
—
PFCOM
PF motor common
4
0
PF –A
PF motor phase –A
Table A-4. Connector Pin Assignments -
CN4
pin
[
l/O
I
Signal Name
I
Function
1
I
VP
+35
VDC
2
I
VP
+35
VDC
3
—
GND Signal ground
4
—
GND
Signal ground
5
I
VL
DC
voltaoe
for
Icmic
A-2
Rev.A
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