DOWNLOAD Panasonic FP-7742 / FP-7750 Service Manual ↓ Size: 311.58 KB | Pages: 123 in PDF or view online for FREE

Model
FP-7742 FP-7750
Pages
123
Size
311.58 KB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / PLAIN PAPER COPIER
File
fp-7742-fp-7750.pdf
Date
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Panasonic FP-7742 / FP-7750 Service Manual ▷ View online

3-5
PCB Connector and
Signal Information
(CN5)
Pin
Signal
Destination
Status
Function
No.
Name
11 GND
Paper feed
0V
Ground
cover sensor
CN-3
12 GND
Bypass paper
0V
Ground
detecting sensor
CN-3
13 VL
Registration roller
DC+5V power supply
paper pass sensor
(rear) CN-1
14 VL
Registration roller
DC+5V power supply
paper pass sensor
(front) CN-1
15 RRSN2
Registration roller
Paper detecting signal
paper pass sensor
(rear) CN-2
16 RRSN
Registration roller
Paper detecting signal
paper pass sensor
(front) CN-2
17 GND
Registration roller
0V
Ground
paper pass sensor
(rear) CN-3
18 GND
Registration roller
0V
Ground
paper pass sensor
(front) CN-3
(CN5)
Pin
Signal
Destination
Status
Function
No.
Name
1 VP
Bypass paper
DC+24V power supply
feed clutch CN-1
2 HFCR
Bypass paper
Clutch ON/OFF signal
feed clutch CN-2
3 VP
Bypass
DC+24V power supply
registration roller
clutch CN-1
4 RRCR
Bypass
Clutch ON/OFF signal
registration roller
clutch CN-2
5 VP
Bypass paper
DC+24V power supply
 feed solenoid
CN-1
6 HFSOL
Bypass paper
Solenoid ON/OFF signal
feed solenoid
CN-2
7 VL
Paper feed
DC+5V power supply
cover sensor
CN-1
8 VL
Bypass paper
DC+5V power supply
detecting sensor
CN-1
9 QDOSN
Paper feed
Cover open/close
cover sensor
detecting signal
CN-2
10 HPESN
Bypass paper
Paper detecting signal
detecting sensor
CN-2
5V
Detect
5V
Detect
0V
5V
0V
5V
0V
24V
0V
24V
5V
Detect
Close
5V
Open 
0V
5V
0V
5V
0V
24V
ON
ON
ON
3-6
(CN7)
Pin
Signal
Destination
Status
Function
No.
Name
1 GND
Copy density
0V
Ground
sensor CN-1
2 CDSN2
Copy density
Analog
Paper base tone
sensor CN-2
0 to 5V
detecting signal
3 VCDS
Copy density
Sensor ON/OFF signal
sensor CN-3
4 CDSN1
Copy density
Analog
Copy density detecting
sensor CN-4
0 to 5V
signal
5 GOPSW1 Developer unit
Developer unit detecting
signal
6 TDREF
Toner density
Analog
Toner density gain
sensor CN-1
0 to 8.5V
adjustment output signal
7 VP
Toner density
DC+24V power supply
sensor CN-2
8 TDSN
Toner density
Analog
Toner density detecting
sensor CN-3
0 to 5V
signal
9 GND
Toner density
0V
Ground
sensor CN-4
10 GOPSW2 Developer unit
0V
Ground
(CN6)
Pin
Signal
Destination
Status
Function
No.
Name
1 VL
Bypass paper
DC+5V power supply
size sensor 3
CN-1
2 HPSSN3 Bypass paper
Paper size detecting
size sensor 3
signal
CN-2
3 GND
Bypass paper
0V
Ground
size sensor 3
CN-3
4 VL
Bypass paper
DC+5V power supply
size sensor 2
CN-1
5 HPSSN2 Bypass paper
Paper size detecting
size sensor 2
signal
CN-2
6 GND
Bypass paper
0V
Ground
size sensor 2
CN-3
7 VL
Bypass paper
DC+5V power supply
size sensor 1
CN-1
8 HPSSN1 Bypass paper
Paper size detecting
size sensor 1
signal
CN-2
9 GND
Bypass paper
0V
Ground
size sensor 1
CN-3
0V
5V
0V
5V
0V
5V
5V
Detect
5V
Detect
5V
Detect
5V
ON 
0V
5V
Not
detect
0V
24V
3-7
PCB Connector and
Signal Information
(CN7)
Pin
Signal
Destination
Status
Function
No.
Name
11 RCSOL
Recycle solenoid
Solenoid ON/OFF signal
CN-2
12 PGND
—
0V
Power ground
13 TH1
Thermistor
Analog
Fuser temperature
CN-1
5 to 2.7V
detecting signal
14 TH2
Thermistor
0V
Fuser temperature
CN-2
detecting signal
(CN8)
Pin
Signal
Destination
Status
Function
No.
Name
1 OZFM
Suction/Ozone
Fan drive signal
fan CN-1
2 DDFM
Developer cooling
Fan drive signal
fan CN-1
3 OZFL
Suction/Ozone
Fan lock detecting
fan CN-2
signal
4 DDFL
Developer cooling
Fan lock detecting
fan CN-2
signal
5 PGND
Suction/Ozone
0V
Power ground
fan CN-3
6 PGND
Developer cooling
0V
Power ground
fan CN-3
7 SCFM
Dust collection
Fan drive signal
fan CN-1
8 —
9 SCFL
Dust collection
Fan lock detecting
fan CN-2
signal
10 VP
Middle roller
DC+24V power supply
clutch CN-1
24V
ON 
0V
24V
ON 
0V
24V
ON 
0V
0V
Lock
5V
0V
Lock
5V
0V
24V
0V
Lock
5V
0V
ON
24V
3-8
(CN9)
Pin
Signal
Destination
Status
Function
No.
Name
1 HVLKC
HVPS
Charge high voltage leak
CN-9
detecting signal
2 HVCNT
HVPS
Charge high voltage
CN-8
ON/OFF signal
3 GREF
HVPS
Analog
Grid bias adjustment
CN-7
0.5 to 8.5V
signal
4 HVBCNT HVPS
Bias ON/OFF signal
CN-6
5 BREF
HVPS
Analog
Bias adjustment signal
CN-5
0.5 to 8.5V
6 HVLKD
HVPS
Separation high voltage
CN-4
leak detecting signal
7 DTCNT
HVPS
Separation high voltage
CN-3
ON/OFF signal
8 PGND
HVPS
0V
Power ground
CN-2
9 VP
HVPS
DC+24V power supply
CN-1
(CN8)
Pin
Signal
Destination
Status
Function
No.
Name
11 PGND
Dust collection
0V
Power ground
fan CN-3
12 PCCR
Middle roller
Clutch ON/OFF signal
clutch CN-2
0V
ON
24V
0V
Leak
5V
0V
Leak
5V
Pulse
5V
0V
Pulse
5V
0V
Pulse
5V
0V
0V
24V
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