Panasonic FA-DS725, FA-DS825 Service manual

FA-DS725/DS825 Back to Model List

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

Mechanical

components

Maintenance Introduction

Electrical

components

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)

Trouble

Shooting

Installation

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.

Section I Introduction

1.1 Specifications

Applicable models : FP-DS725 : FP-D250/D350 Series

FP-DS825 : FP-D450/D600 Series

Paper capacity : 550 sheets / Paper feed cassette

max. 1650 sheets /3 stages of paper feed cassette

Paper weight: standard: 20 lb , 80g / m

range: 16 lb to 24 lb , 60g / m2 to 90 g /m Paper size: Ledger/A3, Letter/A4, Legal/B4, Invoice/A5 Power source: DC24V (Power is supplied from main body of the copy

machine) Dimensions: 23.9" (W) x 25.0" (D) x 16.4" (H)

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

Relative humidity: 30 ~ 80 % RH Optional accessories: 550 sheet paper drawer

(System console) FP-DS725 : Storage tray + cover

(On 1st & 2nd stages, standard drive operation, on 3rd stage,

optional drive unit is needed.) FP-DS825 : 550 sheets + storage tray + cover

(On 1st, 2nd and 3rd stages, drive unit is standard.)

Introduction

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.

1-1

1.3 Names of exterior parts

Upper stage paper drawer

Middle stage paper drawer

Paper feed cover

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 motor

Pick up roller

Paper detecting sensor

SV003

Paper upper limit sensor

Paper feed roller

Middle roller

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)

Paper pass sensor Upper drive gear

DFP roller Paper level sensor (upper)

Middle drive gear

Introduction

Across section at the center

Lower drive gear

Paper level

sensor (middle)

SV001

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

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

Paper feed roller

Middle roller

Paper pass sensor

Middle roller gear

Upper drive gear

Middle drive gear

Paper feed clutch

Paper feed system clutch

DFP roller

Paper detecting sensor

Paper upper limit sensor

Pick up roller

Paper feed solenoid

2-2

Lower drive gear

Paper feed motor

Drive operation of Paper feed system

SV005

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.

Mechanical

components

Lift motor

Lift lever drive gear

Coupling

Paper lever sensor

Pick up roller

Lift lever

Paper upper limit sensor

Paper detecting sensor

Bottom plate

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.

2-3

Section III Maintenance

3.1 Maintenance components

The following is the maintenance replacement areas of the paper feed system.

Section

1 2 3

4 5

Paper feed system

Here the upper stage of paper feed unit is shown, but the middle and the lower are the same as the upper.

Part name

Paper feed roller Pick-up roller

DFP roller

Torque limiter Middle roller

Replacement interval

120K 120K

120K

1200K 1080K

213 54

SV210

Caution

Magnet clutch

Hook

Maintenance

"D" cut

Welded point

(Front view)

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.

(Side view)

Welded point

"D" cut

3-1

3.2 Disassembly and Assembly

1) Replacement of the paper feed roller/pick up roller

Paper feed cover

Cover stopper

1 Remove the right (back) cover and the

right (front) cover. (1 screw each)

2 3

2 Open the paper feed cover. 3 Remove the paper feed cover stoppers.

NOTE: Close the cover slightly and lift the

end of the link up out of the slot.

4 Loosen the two locking screws installed

at 45 degrees (1 each side) at the cover base pins.

SV002

5 Remove the paper feed cover.

1 Pull out the paper drawer. 2 Remove the connector of the paper feed

unit.

3 Remove the screws (x 4). 4 Remove the paper feed unit from the

system console.

SV202

3-2

1 Remove the touch ring 2 Remove the bracket guide. 3 Remove the paper feed roller. 4 Lifting the pick up roller, remove the pick

SV205

up roller.

2) Replacement of the DFP roller/torque limiter

SV206

3) Replacement of the middle roller

• By procedure 1 and 2, remove the paper feed unit.

1 Remove the screws. (x 2)

NOTE: Be carefull not to damage the

sensors.

2 Remove the lower roller cover. 3 Remove the touch ring. 4 Remove the DFP roller. 5 Remove the torque limiter.

NOTE: Confirm the setting direction of

torque limiter. (Clock wise from shaft end.)

• By procedure 1 and 2, remove the paper feed unit.

1 Remove the E ring of middle roller gear. 2 Remove the touch ring and bearing. 3 Move the middle roller sideways and

remove it.

NOTE: Be carefull not to lose the shock spring located inside the drive

gear.

Maintenance

SV203

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

4-1

CN610

123456789

10111213141516

CN603

LUM1-12LUM1-2

PPCR1

PUSOL

LVL

PEWSN1

CRRSN1

CN602

1234567

OQRRCR

VPV

CN611

123

OQDOSN

GND

: 24V

:5V

GND: 0V

PGND

OQMCT

OQMLK9OQMCLK

GND

VLVLLBSN1

PESN1

GND

+24V

+5V

24V

Q601

R638

DT603

IC606

IP601

24V

+24V

IC603A

R635

DT602

132021

IC602

121314

CN601

IC603B

IC605

CLUTCH ON

F4 MODE OUTPUT CHECK

F4-54: LIFT MOTOR ON

F4-55: PAPER FEED ROLLER

F4-54: PAPER FEED

LIFTING MOTOR

PAPER FEED ROLLER CLUTCH

SOLENOID ON

PAPER FEED SOLENOID

PAPER LEVEL SENSOR

PAPER PASS SENSOR

PAPER DETECTING SENSOR

PAPER UPPER LIMIT SENSOR

PAPER FEED COVER OPEN/CLOSE

SYSTEM CONSOLE PAPER FEED

ROLLER CLUTCH

DETECTING SENSOR

RELAY CONNECTOR OMITTED

FULL

PAPER FEED

CLUTCH ON

SOLENOID ON

LIFT MOTOR

PAPER FEED ROLLER

PAPER FEED SYSTEM CONSOLE (UPPER)

PAPER FEED DRIVER CIRCUIT

CONNECTING

CABLE

(TO COPIER

OR LCC)

PAPER FEED MOTOR

LIMIT

PAPER UPPER

(INTERCEPTED)

NO PAPER

(INTERCEPTED)

PAPER PASS

(UNINTERCEPTED)

4-2

4.2 Signal information table

Driver circuit of paper feed system

(CN601)

Pin No.

Signal Name

PGND

F32OUT

FENB

QLTH

F32CLK

OQLD

–

OQIN

OQMCLK

GND

Destination

Low voltage power supply circuit at main body CN856-1 or LCC driver circuit CN562-1

Low voltage power supply circuit at main body CN856-2 or LCC driver circuit CN562-2

Low voltage power supply circuit at main body CN856-3 or LCC driver circuit CN562-3

Low voltage power supply circuit at main body CN856-4 or LCC driver circuit CN562-4

Main body CPU circuit CN3-1 or LCC driver circuit CN562-5

Main body CPU circuit CN3-2 or LCC driver circuit CN562-6

Main body CPU circuit CN3-3 or LCC driver circuit CN562-7

Main body CPU circuit CN3-4 or LCC driver circuit CN 562-8

Main body CPU circuit CN3-5 or LCC driver circuit CN562-9

Main body CPU circuit CN3-7 or LCC driver circuit CN562-11

Main body CPU circuit CN3-8 or LCC driver circuit CN562-12

Main body CPU circuit CN3-9 or LCC driver circuit CN562-13

Main body CPU circuit CN3-10 or LCC driver circuit CN562-14

Status

Pulse

Shift

Pulse

Function

24V

DC+24V Power supply

DC+24V power ground

32 bit data output signal

32 bit data output enable

signal 32 bit data transfer latch

signal 32 bit data transfer /

receive clock signal 32 bit data receive shift/

Load

load control signal

32 bit data receive input signal

paper feed system motor clock or LCC drive motor clock signal

DC+5V power supply

DC+5V ground

Electrical

components

4-3

+ 32 hidden pages