Panasonic FP-7742 / FP-7750 Service Manual ▷ View online
3-13
PCB Connector and
Signal Information
(CN14)
Pin
Signal
Destination
Status
Function
No.
Name
1 ELP1
Discharge lamp
Lamp ON/OFF signal
CN-1
2 ELP2
Discharge lamp
Lamp ON/OFF signal
CN-2
3 Vp
Discharge lamp
DC+24V power supply
CN-3
4 Vp
DC+24V power supply
(Spare)
(Spare)
(CN15)
Pin
Signal
Destination
Status
Function
No.
Name
1 MSMCAB LVPS
Mirror stepping motor
CN123-15
drive signal A
2 MSMCA LVPS
Mirror stepping motor
CN123-14
drive signal A
3 MSMCB LVPS
Mirror stepping motor
CN123-13
drive signal B
4 MSMCBB LVPS
Mirror stepping motor
CN123-12
drive signal B
5 LSMCAB LVPS
Lens stepping motor
CN123-11
drive signal A
6 LSMCA
LVPS
Lens stepping motor
CN123-10
drive signal A
7 LSMCB
LVPS
Lens stepping motor
CN123-9
drive signal B
8 LSMCBB LVPS
Lens stepping motor
CN123-8
drive signal B
9 LMENB
LVPS
Optics drive motor
CN123-7
output enable signal
10 LMCMB LVPS
Optics drive motor
CN123-6
Pulse
5V
0V
Pulse
5V
0V
0V
0V
5V
Reverse
Forward
0V
24V
0V
24V
0V
ON
24V
0V
ON
24V
Pulse
5V
0V
Pulse
5V
0V
Pulse
5V
0V
Pulse
5V
0V
Pulse
5V
0V
Pulse
5V
0V
3-14
(CN16)
Pin
Signal
Destination
Status
Function
No.
Name
1 HTTR1
AC driver
Fuser lamp 1 ON/OFF
CN206-1
control signal
2 HTTR2
AC driver
Fuser lamp 2 ON/OFF
CN206-2
control signal
3 LPFB1
AC driver
Exposure lamp feedback
CN206-3
voltage
4 LPFB2
AC driver
Exposure lamp feedback
CN206-4
voltage
5 LPCNT
AC driver
Exposure lamp ON/OFF
CN206-5
control signal
6 VL
AC driver
DC+5V power supply
CN206-6
0V
5V
ON
OFF
(CN15)
Pin
Signal
Destination
Status
Function
No.
Name
11 LMCLK
LVPS
Optics drive motor
CN123-5
clock signal
12 LMM3
LVPS
Optics drive motor output
CN123-4
pattern control signal 3
13 LMM1
LVPS
Optics drive motor output
CN123-3
pattern control signal 1
14 LMREF
LVPS
Analog
Optics drive motor gain
CN123-2
0 to 2.5V
adjustment signal
15 VLC
Copier CPU
DC+5V power supply
CN123-1
Pulse
5V
0V
0V
0V
0V
5V
ON
OFF
ON
OFF
3-15
PCB Connector and
Signal Information
(CN20)
Pin
Signal
Destination
Status
Function
No.
Name
1 IADFRX
ADF connector 1
Inverse ADF receive
signal
signal
2 ADFRX
ADF connector 2
ADF receive signal
3 GND
ADF connector 3
0V
Ground
4 IADFTX
ADF connector 4
Inverse ADF transfer
signal
signal
5 ADFTX
ADF connector 5
ADF transfer signal
6 TESTID
ADF connector 6
ADF original feed
completed signal
completed signal
7 ADFOUT ADF connector 7
Spare
(CN17 - 19)
Not used
(CN21)
Pin
Signal
Destination
Status
Function
No.
Name
1 ISTRX
Sorter
Inverse sorter receive
connector 1
signal
2 STRX
Sorter
Sorter receive signal
connector 2
3 GND
Sorter
Ground
connector 3
4 ISTTX
Sorter
Inverse sorter transfer
connector 4
signal
5 STTX
Sorter
Sorter transfer signal
connector 5
6 VL
Sorter
connector 6
connector 6
(CN22)
Factory use only
Pulse
Pulse
Pulse
Pulse
0V
Completed
5V
Pulse
Pulse
Pulse
Pulse
3-16
3.2 Control Panel PCB
(1) CPU PCB
(CN401)
Pin
Signal
Destination
Status
Function
No.
Name
1 VLC
LVPS
DC+5V power supply
CN104-13
2 GND
LVPS
0V
Ground
CN104-10
3 —
4 —
5 —
6 —
7 GND
LVPS
0V
Ground
CN104-12
8 GND
LVPS
0V
Ground
CN104-11
9 GND
Toner bottle
0V
Ground
home position
sensor SN10-3
sensor SN10-3
10 GND
Toner bottle
0V
Ground
empty sensor
CN3-3
CN3-3
(CN351)
Pin
Signal
Destination
Status
Function
No.
Name
1 INV1
LCD back light
0V
Ground
CN-1
2 —
3 INV2
LCD back light
AC power supply
CN-2
1 kV/P-P
0V
5V
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