Panasonic UF-7000 / UF-8000 / UF-7100 / UF-8100 (serv.man2) Service Manual ▷ View online
17
SEPT 2005
Ver. 2.0
UF-7100/8100
UF-7000/8000
2.2.10. Solenoids Control Circuit
This machine has three solenoids: Pickup Solenoid, Registration solenoid and the Exit solenoid.
2.2.10.1. The Pickup Control Solenoid Drive Circuit
The Pickup Solenoid is used for picking up the paper from the paper tray. The CPU IC006 outputs high level
PUCTL signal from Pin41 to the transistor Q012. The transistor Q012 and Q015 are turned On and supplies
+24V power to the Solenoid.
PUCTL signal from Pin41 to the transistor Q012. The transistor Q012 and Q015 are turned On and supplies
+24V power to the Solenoid.
2.2.10.2. The Registration Solenoid Driver Circuit
The Registration Solenoid is used for controlling Registration Roller rotation. The CPU IC006 outputs high
level REGCTL signal from Pin42 to the transistor Q013. The transistor Q013 and Q016 are turned On and
supplies +24V power to the Solenoid.
level REGCTL signal from Pin42 to the transistor Q013. The transistor Q013 and Q016 are turned On and
supplies +24V power to the Solenoid.
IC006 (CPU)
1
2
41
Pickup Solenoid
PUCTL
(Engine Control PC Board)
+24V
D002
Q015
R101
R105
R108
Q012
CN011
GND
(+24V)
GND
(+5V)
IC006 (CPU)
1
2
42
Registration
Solenoid
REGCTL
(Engine Control PC Board)
+24V
D003
Q016
R102
R106
R109
Q013
CN012
GND
(+24V)
GND
(+5V)
18
SEPT 2005
Ver. 2.0
UF-7100/8100
UF-7000/8000
2.2.10.3. The Exit Solenoid Drive Control Circuit
The Exit Solenoid is used for controlling paper switchback when the machine is auto duplex printing. The
CPU IC006 outputs high level EXITCTL signal from Pin43 to the transistor Q014. The transistor Q014 and
Q017 are turned On and supplies +24V power to the Solenoid.
CPU IC006 outputs high level EXITCTL signal from Pin43 to the transistor Q014. The transistor Q014 and
Q017 are turned On and supplies +24V power to the Solenoid.
IC006 (CPU)
1
2
43
Exit
Solenoid
EXITCTL
(Engine Control PC Board)
+24V
D004
Q017
R103
R107
R110
Q014
CN013
GND
(+24V)
GND
(+5V)
19
SEPT 2005
Ver. 2.0
UF-7100/8100
UF-7000/8000
2.2.11. Sensors Circuit
The machine has four photo sensors: Registration/Paper Detect Sensor, Paper Exit/ADU Paper Jam
Sensor, No Paper Sensor and Low Toner Sensor.
Sensor, No Paper Sensor and Low Toner Sensor.
2.2.11.1. Registration Sensor Circuit
Registration sensor detects that the paper is in front of the Registration Roller. When the Registration
Sensor detects the paper, nREGSEN signal changes from high level to low level.
Sensor detects the paper, nREGSEN signal changes from high level to low level.
2.2.11.2. Paper Detect Sensor Circuit
Paper Detect Sensor detects that the paper has past the Registration Roller. When the Paper Detect
Sensor detects the paper, nTOPSEN signal changes from high level to low level. This nTOPSEN signal is
used for printing start trigger and Top Margin Adjustment.
Sensor detects the paper, nTOPSEN signal changes from high level to low level. This nTOPSEN signal is
used for printing start trigger and Top Margin Adjustment.
IC006 (CPU)
(Engine Control PC Board)
R095
C094
15
nREGSEN
R098
L013
R111
L017
+5V
CN014
1
2
4
5
4
2
CN401
R401
PI402
Registration Sensor
GND (+5V)
(Registration/Paper Detect
Sensor PC Board)
Sensor PC Board)
+5V
L018
IC006 (CPU)
(Engine Control PC Board)
R096
C096
16
nTOPSEN
R100
L014
R111
L017
+5V
CN014
1
3
5
5
3
1
CN401
R404
PI405
Paper Detect Sensor
GND (+5V)
(Registration/Paper Detect
Sensor PC Board)
Sensor PC Board)
+5V
20
SEPT 2005
Ver. 2.0
UF-7100/8100
UF-7000/8000
2.2.11.3. Paper Exit/ADU Paper Jam Sensor Circuit
Paper Exit/ADU Paper Jam Sensor detects that the paper is at the Rear of the Fuser Roller (Exit of the
printer). When the Paper Exit/ADU Paper Jam Sensor detects the paper, nEXITSEN signal changes from
high level to low level. +5VSP is the power of the photo sensors. When the 5VCTL signal at Pin32 of IC006
(CPU) is low level, the transistor Q018 is turned On. This supplies +5V power to the photo sensors.
printer). When the Paper Exit/ADU Paper Jam Sensor detects the paper, nEXITSEN signal changes from
high level to low level. +5VSP is the power of the photo sensors. When the 5VCTL signal at Pin32 of IC006
(CPU) is low level, the transistor Q018 is turned On. This supplies +5V power to the photo sensors.
2.2.11.4. No Paper Sensor Circuit
No Paper Sensor detects that the paper is at the Paper Tray or not. When the paper is set in the Paper Tray,
PNON signal becomes low level. +5VSP is the power of the photo sensors. When the 5VCTL signal at
Pin32 of IC006 (CPU) is low level, the transistor Q018 is turned On. This supplies +5V power to the photo
sensors.
PNON signal becomes low level. +5VSP is the power of the photo sensors. When the 5VCTL signal at
Pin32 of IC006 (CPU) is low level, the transistor Q018 is turned On. This supplies +5V power to the photo
sensors.
IC006 (CPU)
Q018
R014
32
5VCTL
(Engine Control PC Board)
R097
40
nEXITSEN
R099
R112
+5VSP
+5V
+5VSP
CN015
1
2
4
4
3
1
CN402
R405
PI406
Paper Exit/ADU Paper
Jam Sensor
GND (+5V)
(Paper Exit/ADU Paper
Jam Sensor Board)
Jam Sensor Board)
C095
L019
L015
L016
IC006 (CPU)
Q018
R014
32
5VGTL
(Engine Control PC Board)
R118
35
PNON
R120
R112
+5VSP
+5V
+5VSP
CN019
3
2
1
3
2
1
CN450
R450
PI450
No Paper Sensor
GND (+5V)
(No Paper Sensor Board)
C098
C123
Click on the first or last page to see other UF-7000 / UF-8000 / UF-7100 / UF-8100 (serv.man2) service manuals if exist.