Konica 7920 Wiring Diagram pf231e
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
PF-231
SERVICE MANUAL
10794
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
CONTENTS
GENERAL,
MECHANICAL/ELECTRICAL
1. SPECIFICATIONS ........................................................................................... M-1
2. PARTS IDENTIFICATION ................................ ...............................................M-2
3. CROSS-SECTIONAL VIEW ............................................................................M-2
4. DRIVE SYSTEM ..............................................................................................M-3
5. ELECTRICAL COMPONENTS LAYOUT ........................................................M-3
6. MECHANISM AND CONTROL ............................... ............... ..........................M-4
6-1. Vertical Transport Drive Mechanism ........................................................M-4
6-2. Paper Take-Up Mechanism .....................................................................M-4
6-3. Paper Take-Up Control ............................................................................M-4
6-4. Edge Guides and Trailing Edge Stop ......................................................M-5
6-5. Paper Lifting Plate ...................................................................................M-5
6-6. Double Feed Prevention ..........................................................................M-6
6-7. Drawer-in-Position Detection ................................................................... M-6
6-8. Paper Near Empty Detection ...................................................................M-7
6-9. Paper Empty Detection . ...........................................................................M-7
6-10.Paper Level Indicator LED .......................................................................M-8
6-11.Paper Size Detection ...............................................................................M-9
6-12.Paper Dehumidifying Heater (Option) .....................................................M-10
DIS/REASSEMBLY, ADJUSTMENT
1. DISASSEMBLY ...............................................................................................D-1
1-1. Maintenance Schedule .......................................................... ......... .. .... .. .D-1
1-2. Removal of the Paper Take-Up Roll ........................................................D-2
1-3. Removal of the Separator Roller Assy .....................................................D-3
1-4. Cleaning of the Paper Take-Up Roll ............................................. .... .... .. .D-4
1-5. Cleaning of the Separator Roll .................................................................D-4
1-6. Cleaning of the Vertical Transport Roller/Ro lls ........................................D-4
2. ADJUSTMENT .................................................................................................D-5
2-1. Reference Position Adjustment .................................................. .............D-5
MISFEED DETECTION
1. MISFEED DETECTION ........................................................................ ...........T-1
1-1. Location of Misfeed Detecting Sensors ...................................................T-1
1-2. Misfeed Detection Timing ........................................................................T-2
i
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
GENERAL,
MECHANICAL/ELECTRICAL
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
1. SPECIFICATIONS
Type : Add-on paper source unit
Installation : Mounted beneath Upper Drawer of copier
Type of Copy Paper : Plain paper
Paper Sizes : B5L/C to A3L or 8-1/2 × 11LC to 11 × 17L
Paper Weight :
Registration : Center
Capacity : 500 sheets
Power Requirements : DC24 V ± 10 %, DC5.1 V ± 5 % (supplied from copier)
Max. Power Consumption : 16.8 W
Dimensions : Width ... 535 mm or 21 in
Weight : 8.5 kg or 18-3/4 lbs.
64 to 90 g/m
Depth ... 568 mm or 22-1/4 in
Height ... 127 mm or 5 in
2
or 17 to 24 lbs.
M-1
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
2. PARTS IDENTIFICATION
1
4
2
1. Edge Guides
2. Right Side Door
3. Paper Lifting Plate
4. Trailing Edge Stop
3. CROSS-SECTIONAL VIEW
1. Paper Take-Up Roll
2. Vertical Transport Roller
3. Separator Roll
4. Paper Lifting Spring
5. Paper Lifting Plate
6. Edge Guide
7. Trailing Edge Stop
3
4658M001AB
21
34567
4658M002AA
M-2
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
4. DRIVE SYSTEM
Paper Take-Up
Drive Mechanism
5. ELECTRICAL COMPONENTS LAYOUT
4658M003AA
CL1
M1
PWB-A
PW A
Symbol Name Symbol Name
PWB-A
Control Board
M1
Paper Take-Up Motor
CL1
Paper Take-Up Clutch
UN1
Paper Near Empty Board
PC1
Paper Take-Up Sensor
PC2
Paper Empty Sensor
PC3
Paper Near Empty Sensor
PW C
PW B
PC4
PW D
PC4
PC5
SW A
SW B
SW C
SW D
PC3
PC5
PC2
PC1
4658M004AA
Door Set Sensor
Double Feed Sensor
Paper Size Detection Switch 1
Paper Size Detection Switch 2
Paper Size Detection Switch 3
Drawer Set Switch
UN1
M-3
FrameMaker Ver.5.5(PC) PF-231 OPTION FOR 7915/7920
01.02.09
6. MECHANISM AND CONTROL
6-1. Vertical Transport Drive Mechanism
• The Paper Take-Up Motor provides the drive for the Vertical Transport Roller.
Paper Take-Up Motor
M1
Vertical Transport Roller
4658M005AB
6-2. Paper Take-Up Mechanism
• Paper take-up drive is provided by the Paper Take-Up Motor via the Paper Take-Up
Clutch.
Paper Take-Up Clutch
CL1
Paper Take-Up Roll
Paper Take-Up Motor
M1
Separator Roll
4658M006AB
6-3. Paper Take-Up Control
• The Paper Take-Up Clutch is energized and deenergized by the signals output from pins
13 and 14 of PJ3A on the Control Board.
Start Key ON
Paper Tak e-Up Motor
M1
Paper Tak e-Up Clutch
CL1
Paper Tak e-Up Sensor
PC1
ON
OFF
ON
OFF
H
L
4658M502CA
M-4
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