4-1
Chapter 4 ELECTRICAL DESCRIPTION
4.1 CONNECTION DIAGRAM
4-2
+24V Power control signal
Heat lamp control
Thermistor connector check
Recording paper pick-up detect
RX Motor enable
RX Motor control B
RX Motor control A
Fan drive
A4 Size cassette detect
Letter size cassette detect
+24V Power supply
+24V Power supply
Temperature detect for heater lamp
Ground 24V
Recording paper empty detect
Ground 5V
Recording paper exit detect
Ground 5V
Printing data latch
+ 5V Power supply
LPH Strobe 3
+ 5V Power supply
LPH Printing clock
+ 12V Power supply
LPH Strobe 2
Ground 12V
LPH LTIN data
Ground 12V
LPH Strobe 1
-12V Power supply
LPH Strobe 0
+24V Power control signal
Ground 24V
Tonner exit detect
AC Motor drive A
AC Motor drive B
+ 24V Power supply
Paper feed clutch control
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
MAIN
PBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
MOTHER
PBA
1
2
3
4
5
6
7
MAIN
PBA
1
2
3
4
5
6
7
CONNECTION
PBA
P60 P53
P2
P3
P12
P11
4-3
OPE Reset signal
RX Data from OPE
TX Data to OPE
CIS Scan signal output
Ground 5V
Speaker signal
+5V Power supply
Ground 12V
-12V Power supply
ClS Start pulse
+5V Power supply
Ground 5V
CIS LED +5V Power supply
Document scan position sensor output
Document scan position sensor +5V power supply
Not Used
+24V Power supply
TX Motor phase A
TX Motor phase /B
TX Motor phase B
TX Motor phase /A
Not Used
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
P1
MAIN
PBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
P32
SCAN
PBA
+ 24V Power supply
Ground 24V
High voltage drive for transfer
High voltage drive for charge
Toner bias drive
1
2
3
4
5
P5
MAIN
PBA
1
2
3
4
5
H5
HVPS
4-4
+ 5V Power supply
TAD/External telephone off hook detect
Ring detect
Ground 5V
CML Relay control
Built in handset off hook detect
TX/RX Data
Not Used
Not Used
Not Used
Ground 12V
Not Used
+ 12V Power supply
- 12V Power supply
Remote tone signal
Volume control in
DP Control
Volume control out
TX Speech signal from handset
RX Speech signal to handset
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
P4
MAIN
PBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
P7
LIU
PBA
+ 5V Power supply
Ground 5V
Ground 24V
Ground 24V
+ 24V Power supply
+ 24V Power supply
RX Motor enable
RX Motor control B
RX Motor control A
Fan drive
New OPC detect
1
2
3
4
5
6
7
8
9
10
11
P15
MOTHER
PBA
1
2
3
4
5
6
7
8
9
10
11
P16
MECH
PBA
4-5
AC Power (HOT)
AC Power (neutral)
+ 12V Power supply
Ground 12V
Ground 12V
+ 12V Power supply
+ 5V Power supply
+ 5V Power supply
+ 5V Power supply
+ 5V Power supply
Ground 5V
Ground 5V
Ground 5V
Ground 5V
Ground 24V
Ground 24V
Ground 24V
+ 24V Power supply
+ 24V Power supply
+24V Power supply
+ 24V Power control signal
Heat lamp control
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
P14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
P22
1
2
P45
MOTHER
PBA
1
2
P55
LIU
PBA
+ 24V Power control signal
Ground 24V
+ 24V Power supply
Paper feed clutch control
AC Motor drive A
AC Motor drive B
+ 24V Power supply
Ground 24V
Toner exit detect
1
2
P18
1
2
P19
1
2
P21
1
2
3
P49
MOTHER
PBA
1
2
H18
1
2
H19
COVER
SWITCH
PICK-UP
CLUTCH
1
2
H21
1
2
H49
AC
MOTOR
TONER
SENSOR