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FA-DS725/DS825
Service manual (Contents)
WARNING
I. Introduction
1.1 |
Specifications .......................................................................................... |
1-1 |
1.2 |
Features .................................................................................................. |
1-1 |
1.3 |
Names of exterior parts .......................................................................... |
1-2 |
1.4 |
Component location ................................................................................ |
1-3 |
II. Mechanical components
2.1 |
Drive mechanism of paper feed system ................................................ |
2-1 |
2.2 |
Operation of the paper feed unit ............................................................ |
2-2 |
III. Maintenance
3.1 |
Maintenance components ...................................................................... |
3-1 |
3.2 |
Disassembly and Assembly ................................................................... |
3-2 |
IV. Electrical components
4.1 |
Electrical components operation ............................................................. |
4-1 |
4.2 |
Signal information table .......................................................................... |
4-3 |
V. Troubleshooting
5.1 |
Self diagnostic, malfunction detection .................................................... |
5-1 |
5.2 |
Service mode .......................................................................................... |
5-6 |
VI. Installation
6.1 |
Unpacking ............................................................................................... |
6-1 |
6.2 |
Installation procedure ............................................................................. |
6-1 |
Schematic diagram (System Console)
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Introduction |
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Mechanical |
components |
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Maintenance |
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Electrical |
components |
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Trouble |
Shooting |
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Installation |
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WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result serious injury or death.
(For USA)
This manual was developed and is supplied to authorized servicing dealers by Panasonic Communications & Systems Co. for the sole purpose of providing information necessary for the equipment's proper support. It is intended that this information be confidential and may not be reproduced without prior written consent from Panasonic Communications & Systems Co. Panasonic Communications & Systems Co. reserves the right to change any information enclosed herein without prior notification.
This manual was developed and is supplied to authorized servicing dealers by Panasonic Co. for the sole purpose of providing information necessary for the equipment's proper support. It is intended that this information be confidential and may not be reproduced without prior written consent from Panasonic Co. Panasonic Co. reserves the right to change any information enclosed herein without prior notification.
© February, 1999
Section I Introduction
1.1 Specifications
Applicable models : |
FP-DS725 : FP-D250/D350 Series |
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FP-DS825 : FP-D450/D600 Series |
Paper capacity : |
550 sheets / Paper feed cassette |
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max. 1650 sheets /3 stages of paper feed cassette |
Paper weight: |
standard: 20 lb , 80g / m2 |
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range: 16 lb to 24 lb , 60g / m2 to 90 g /m2 |
Paper size: |
Ledger/A3, Letter/A4, Legal/B4, Invoice/A5 |
Power source: |
DC24V (Power is supplied from main body of the copy |
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machine) |
Dimensions: |
23.9" (W) x 25.0" (D) x 16.4" (H) |
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606(W) x 634(D) x 417(H) mm |
Weight: |
47.7 lb / 22 kg (DS725), 56.4lb/26kg (DS825) |
Ambient conditions: |
Temperature: 50 ~ 86 F / 10 ~30 degree |
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Relative humidity: 30 ~ 80 % RH |
Optional accessories: |
550 sheet paper drawer |
(System console) |
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FP-DS725 : |
Storage tray + cover |
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(On 1st & 2nd stages, standard drive operation, on 3rd stage, |
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optional drive unit is needed.) |
FP-DS825 : |
550 sheets + storage tray + cover |
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(On 1st, 2nd and 3rd stages, drive unit is standard.) |
1.2 Features
•By installing 550 sheet paper drawers, max. 1650 sheets can be held.
•Easy to install, using an outside connector on the copy machine.
•Low paper detection.
Introduction
1-1
1.3 Names of exterior parts
Upper stage
paper drawer Paper feed
cover
Middle stage 
paper drawer
Right (front) cover
SV004
1-2
1.4 Component location
Paper feed motor
Paper detecting sensor (upper)
Paper upper limit sensor (upper)
Paper detecting sensor (middle)
Paper upper limit sensor (middle)
Paper detecting sensor (lower)
Paper upper limit sensor (lower)
Paper feed solenoid (upper)
Paper pass sensor (upper) Lift motor (upper)
Paper feed clutch (upper)
Paper feed door OPEN/CLOSE sensor
Lift motor (middle)
Paper feed clutch (middle)
Paper feed solenoid (middle)
Paper feed clutch (lower)
Lift motor (lower)
Paper pass sensor (middle)
Paper feed solenoid (lower) Paper pass
sensor (lower)
SV003
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Paper upper limit sensor |
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Paper |
Pick up roller |
Paper feed roller |
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feed motor Paper detecting |
Middle roller |
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sensor |
Paper pass sensor |
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Upper drive gear |
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DFP roller |
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Paper level |
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sensor (upper) |
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Middle drive gear |
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Lower drive gear |
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Paper level |
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sensor (middle) |
Across section at the center |
SV001 |
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Introduction
1-3
Section II Mechanical components
2.1 Drive mechanism of paper feed system
•The paper feed system can have up to 3 stages of paper drawers installed. Each paper drawer is driven by a paper feed unit, and each paper feed unit is driven by the paper feed motor which is installed in the stand.
•The rotation of the paper feed motor is transmitted to upper, middle, and lower drive gear by gear, paper feed system clutch, and transmission belt.
•The middle roller gear of the paper feed unit is connected to the drive gear of paper feed system. The rotation of the paper feed motor is transmitted to the middle roller of the paper feed unit by the gear on the middle roller.
•When the paper in the paper drawer is 50 sheets or less, the paper level sensor detects a low paper condition.
Mechanical |
components |
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2-1
2.2 Operation of the paper feed unit
1)Structure of paper feed unit
Please refer to the paper feed section in the basic version of main body service manual of the copy machine.
2)Operation of paper feed unit
•When the "Print" key is pressed, and the paper feed motor of system console rotates, the drive gear of the paper feed unit is driven by a drive gear, paper feed system clutch, and drive belt.
The drive gear is connected to the middle roller gear in the paper feed unit, so the middle roller gear is also driven at this time.
•Next, the paper feed clutch turns on, after paper feed solenoid turns on and the pick up roller is pressed onto the paper in drawer. The pick up roller and paper feed roller rotate and the paper in the drawer is driven to the middle roller.
•If paper is double fed, the bottom sheet is returned by the paper drawer double feed prevention (DFP) roller.
•Paper pass sensor confirms the movement of paper from drawer.
When the paper pass sensor does not confirm the paper arrival after a predetermined time, "paper jam" location indicator turns on.
Through the above operation, paper, which is transmitted to the middle roller, is fed to the main body of the copy machine.
Paper feed unit
Middle roller |
Paper feed roller |
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DFP roller |
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Paper pass sensor |
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Middle roller gear |
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Paper detecting sensor |
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Paper upper limit sensor |
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Pick up roller |
Upper drive |
Paper feed solenoid |
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gear |
Paper feed clutch |
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Middle drive |
Paper feed system clutch |
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gear |
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Lower drive gear |
Paper feed motor |
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Drive operation of Paper feed system |
SV005 |
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2-2
3)Lift mechanism of paper drawer
•When the paper drawer is inserted, the lift lever is engaged with the coupling which drives the lift lever of the system console.
Then the lift motor rotates, the rotation is transmitted to the lifting lever drive gear by a gear, and by rotating the lift lever, the bottom plate of the drawer (and paper) is lifted.
•When the bottom plate of the drawer (paper) is lifted, the paper upper limit sensor of the paper feed unit turns on and the rotation of the lift motor is stopped. This way, level of paper can be kept constant.
4)Paper detecting operation
•When the paper drawer contains paper, the paper detecting sensor turns on. When there is no paper in the drawer, the paper detecting sensor lever drops into a slot in the bottom plate, the paper detecting sensor turns off and "no paper" is detected.
•When the paper level becomes low, the "Add Paper" indication turns on and "low paper level" is detected.
Lift lever drive gear
Lift motor |
Paper lever sensor |
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Coupling |
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Pick up roller |
Lift lever |
Paper upper limit sensor |
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Paper detecting sensor |
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Bottom plate |
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SV006 |
5)Paper size setting of paper drawer
Paper size of the paper drawer is programmed by the user on the copier control panel. Detection of paper size is not performed.
Mechanical |
components |
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2-3
Section III Maintenance
3.1 Maintenance components
The following is the maintenance replacement areas of the paper feed system.
Section |
Part name |
Replacement |
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interval |
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1 |
Paper feed roller |
120K |
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2 |
Pick-up roller |
120K |
2 |
1 |
3 |
4 |
5 |
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systemfeed |
3 |
DFP roller |
1080K |
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Maintenance |
5 |
Middle roller |
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120K |
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4 |
Torque limiter |
1200K |
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Paper |
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SV210 |
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SV210 |
Here the upper stage of paper feed unit is shown, but the middle and the lower are the same as the upper.
Caution
Magnet clutch |
1 |
Hook
Hook
"D" cut
"D" cut
2
Welded point
(Front view) |
(Side view) |
Welded point |
When removing the magnet clutch, push the hook 1 , out of the slot and slide the magnet clutch in the arrow direction 2 , in order to avoid welded point damage.
3-1
3.2 Disassembly and Assembly
1) Replacement of the paper feed roller/pick up roller
1 |
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1 |
Remove the right (back) cover and the |
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right (front) cover. (1 screw each) |
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Paper feed cover |
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2 |
Open the paper feed cover. |
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2 |
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2 |
3 |
Remove the paper feed cover stoppers. |
5 |
5 |
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3 |
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3 |
NOTE: Close the cover slightly and lift the |
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end of the link up out of the slot. |
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4 |
Loosen the two locking screws installed |
4 |
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4 |
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at 45 degrees (1 each side) at the cover |
Cover stopper |
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base pins. |
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5 |
Remove the paper feed cover. |
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SV002 |
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2 |
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1 |
Pull out the paper drawer. |
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2Remove the connector of the paper feed unit.
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3 |
Remove the screws (x 4). |
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2 |
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4 Remove the paper feed unit from the |
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system console. |
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3 |
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SV202 |
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SV202 |
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3 |
1 |
Remove the touch ring |
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2 |
Remove the bracket guide. |
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3
3Remove the paper feed roller.
4Lifting the pick up roller, remove the pick
1 |
up roller. |
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4 2
SV205
SV205
3-2
2) Replacement of the DFP roller/torque limiter
1 |
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• |
By procedure 1 and 2, remove the paper |
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feed unit. |
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1 |
Remove the screws. (x 2) |
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1 |
NOTE: Be carefull not to damage the |
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sensors. |
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2 |
Remove the lower roller cover. |
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3 |
Remove the touch ring. |
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4 |
Remove the DFP roller. |
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2 |
3 |
5 |
Remove the torque limiter. |
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NOTE: Confirm the setting direction of |
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4 |
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5 |
SV206 |
torque limiter. |
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(Clock wise from shaft end.) |
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SV206 |
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3) Replacement of the middle roller |
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1 |
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By procedure 1 and 2, remove the paper |
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feed unit. |
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1 |
1 |
Remove the E ring of middle roller gear. |
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2 |
Remove the touch ring and bearing. |
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3 |
Move the middle roller sideways and |
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remove it. |
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3 |
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NOTE: Be carefull not to lose the shock |
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spring located inside the drive |
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gear. |
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2
SV203
SV203
Maintenance
3-3
Section IV Electrical components
4.1 Electrical Components Operation
The circuit construction of the electrical components in system console is shown in
the figure.
Here, the upper stage is explained.
•When the paper feed drawer is inserted into the system console, the combination of low level, and upper limit sensors tell the CPU to switch, the transistor base of IC602 to 0v. Then, DT602 is turned off. Transistor Q601 is turned on energizing the lift motor, rotating it.
•When paper reaches the upper limit (by the lift motor), the sensor lever attached to the paper upper limit detecting sensor is lifted up and actuates the sensor. The signal from the paper upper limit detecting sensor (LBSN1) goes high and turns on transistor DT603, turning off transistor Q601, and stopping the lift motor. The signal is inputted into and read by IC606.
•When copying starts, the paper feed motor and the system console paper feed roller clutch are turned on. If the upper paper drawer is selected, the upper paper feed roller clutch is turned on. After the paper feed solenoid is turned on, the paper in the drawer is sent to the copier by the paper transfer roller and the paper feed roller.
•When paper reaches the paper pass sensor, the sensor lever detects paper passing. Photosensors such as the paper detecting sensor output 0v when the sensor levers are detected by paper passing and 5V when no paper is present.
Electrical |
components |
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4-1
2-4
CONNECTING CABLE
(TO COPIER
OR LCC)
PAPER FEED SYSTEM CONSOLE (UPPER) |
24V LIFT MOTOR |
5V |
FULL |
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ON |
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PAPER FEED DRIVER CIRCUIT |
0V |
0V |
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+5V |
+24V |
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IP601 |
CN603 |
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R635 |
Q601 |
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LUM1-1 |
1 |
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R638 |
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LUM1-2 |
2 |
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IC606 |
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CN601 |
IC602 |
DT602 |
DT603 |
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6 |
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12 |
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11 |
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IC603A |
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3 |
2 |
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13 |
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IC603B |
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6 |
7 |
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20 |
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21 |
24V |
PAPER FEED ROLLER |
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0V |
CLUTCH ON |
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24V |
PAPER FEED |
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0V |
SOLENOID ON |
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IC602
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IC605 |
12 |
3 |
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13 |
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14 |
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5V |
PAPER UPPER |
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LIMIT |
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0V |
(INTERCEPTED) |
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5V |
PAPER PASS |
5V |
NO PAPER |
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(UNINTERCEPTED) |
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0V |
0V |
(INTERCEPTED) |
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+24V |
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CN610 |
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VP |
1 |
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VP |
2 |
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PPCR1 |
3 |
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PUSOL |
4 |
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VL |
5 |
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VL |
6 |
PEWSN1 7
CRRSN1 8
GND |
9 |
GND |
10 |
VL |
11 |
VL |
12 |
LBSN1 |
13 |
PESN1 |
14 |
GND |
15 |
GND |
16 |
CN602
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OQRRCR 1 |
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VP |
2 |
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VP |
3 |
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VP |
4 |
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PGND |
5 |
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PGND |
6 |
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OQMCT |
7 |
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OQMLK |
8 |
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OQMCLK |
9 |
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CN611 |
1 |
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VL |
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OQDOSN 2 |
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GND |
3 |
VP |
: 24V |
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VL |
: 5V |
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GND : 0V
LIFTING MOTOR
PAPER FEED ROLLER CLUTCH
PAPER FEED SOLENOID
PAPER LEVEL SENSOR
PAPER PASS SENSOR
PAPER UPPER LIMIT SENSOR
PAPER DETECTING SENSOR
RELAY CONNECTOR OMITTED
SYSTEM CONSOLE PAPER FEED
ROLLER CLUTCH
PAPER FEED MOTOR
F4 MODE OUTPUT CHECK
F4-54: LIFT MOTOR ON
F4-55: PAPER FEED ROLLER CLUTCH ON
F4-54: PAPER FEED
SOLENOID ON
PAPER FEED COVER OPEN/CLOSE DETECTING SENSOR
4.2 Signal information table
Driver circuit of paper feed system (CN601)
Pin |
Signal Name |
Destination |
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Status |
Function |
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No. |
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Low voltage power |
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1 |
Vp |
supply circuit at main |
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body CN856-1 or LCC |
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driver circuit CN562-1 |
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24V |
DC+24V Power supply |
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Low voltage power |
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2 |
Vp |
supply circuit at main |
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body CN856-2 or LCC |
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driver circuit CN562-2 |
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Low voltage power |
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3 |
PGND |
supply circuit at main |
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body CN856-3 or LCC |
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driver circuit CN562-3 |
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0V |
DC+24V power ground |
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Low voltage power |
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4 |
PGND |
supply circuit at main |
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body CN856-4 or LCC |
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driver circuit CN562-4 |
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5 |
F32OUT |
Main body CPU circuit |
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Pulse |
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CN3-1 or LCC driver |
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32 bit data output signal |
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circuit CN562-5 |
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6 |
FENB |
Main body CPU circuit |
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32 bit data output enable |
CN3-2 or LCC driver |
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ON |
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circuit CN562-6 |
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signal |
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7 |
QLTH |
Main body CPU circuit |
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Pulse |
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32 bit data transfer latch |
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CN3-3 or LCC driver |
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signal |
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circuit CN562-7 |
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Main body CPU circuit |
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Pulse |
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32 bit data transfer / |
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8 |
F32CLK |
CN3-4 or LCC driver |
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receive clock signal |
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circuit CN 562-8 |
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OQLD |
Main body CPU circuit |
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32 bit data receive shift/ |
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9 |
CN3-5 or LCC driver |
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Load |
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load control signal |
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circuit CN562-9 |
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Shift |
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10 |
– |
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Main body CPU circuit |
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Pulse |
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32 bit data receive input |
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11 |
OQIN |
CN3-7 or LCC driver |
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signal |
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circuit CN562-11 |
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Main body CPU circuit |
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paper feed system motor |
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CN3-8 or LCC driver |
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12 |
OQMCLK |
circuit CN562-12 |
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clock or LCC drive motor |
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clock signal |
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Main body CPU circuit |
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5V |
DC+5V power supply |
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13 |
VL |
CN3-9 or LCC driver |
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circuit CN562-13 |
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Main body CPU circuit |
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DC+5V ground |
14 |
GND |
CN3-10 or LCC driver |
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0V |
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circuit CN562-14 |
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Electrical |
components |
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4-3
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