SAMSUNG FAXF4500 Service Manual

SF-4500/4500C Msys4700/4800 MJ-4500C

SERVICE

Manual

INKJET PRINTER COMPOUND CONTENTS

1. Precaution

2. Specifications

3. Installations

4. Disassembly & Assembly

5. List of Abbreviations

6. Special Circuit Descriptions

7. Theory of Mechanism

8. Troubleshooting

9. Exploded Views and Parts List

10. Packing Diagram and Parts List

11. Electrical Parts List

12. Block Diagrams

13. PCB Diagrams

14. Schematic Diagrams

ELECTRONICS

1-1Samsung Electronics

1-1 Safety Precautions

1. Be sure that all built-in protective devices are in place. Restore any missing protective shields.

2. Make sure there are no cabinet openings through which people- particularly children- might insert fingers or objects and contact dangerous voltages.

3. When re-installing chassis and assemblies, be sure to restore all protective devices, including control knobs and compartment covers.

4. Design Alteration Warning: Never alter or add to the mechanical or electrical design of this equipment, such as auxiliary connectors, etc. Such alterations and modifications will void the manufacturer’s warranty.

5. Components, parts, and wiring that appear to have overheated or are otherwise damaged should be replaced with parts which meet the original specifications. Always determine the cause of damage or overheating, and correct any potential hazards.

6. Observe the original lead dress, especially near sharp edges, AC, and high voltage power supplies. Always inspect for pinched, out-of-place, or frayed wiring. Do not change the spacing between components and the printed circuit board.

7. Product Safety Notice: Some electrical and mechanical parts have special safety-related characteristics which might not be obvious from visual inspection. These safety features and the protection they provide could be lost if a replacement component differs from the original. This holds true, even though the replacement may be rated for higher voltage, wattage, etc.

Components critical for safety are indicated in the parts list with symbols . Use only replace-

ment components that have the same ratings, especially for flame resistance and dielectric specifications. Areplacement part that does not have the same safety characteristics as the original may create shock, fire, or other safety hazards.

Follow these safety, ESD, and servicing precautions to prevent personal injury and equipment damage.

1. Precautions

1-2 Samsung Electronics

1-2 ESD Precautions

Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called “Electrostatically Sensitive (ES) Devices”, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip” components. The techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.

CAUTION: Be sure no power is applied to the

chassis or circuit, and observe all other safety precautions.

1. Immediately before handling a semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, employ a commercially available wrist strap device, which should be removed for your personal safety reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESDs, place the assembly on a conductive surface, such as aluminum or copper foil, or conductive foam, to prevent electrostatic charge buildup in the vicinity of the assembly.

3. Use only a grounded tip soldering iron to solder or desolder ESDs.

4. Use only an “anti-static” solder removal device Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ESDs.

5. Do not use Freon-propelled chemicals. When sprayed, these can generate electrical charges sufficient to damage ESDs.

6. Do not remove a replacement ESD from its protective packaging until immediately before installing it. Most replacement ESDs are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable conductive material.

7. Immediately before removing the protective shorting material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed.

8. Maintain continuous electrical contact between the ESD and the assembly into which it will be installed, until completely plugged or soldered into the circuit.

9. Minimize bodily motions when handling unpackaged replacement ESDs. Normal motions, such as the brushing together of clothing fabric and lifting one’s foot from a carpeted floor, can generate static electricity sufficient to damage an ESD.

1-3 Lithium Battery Precautions

1. Exercise caution when replacing a Lithium battery. There could be a danger of explosion and subsequent operator injury and/or equipment damage if incorrectly installed.

2. Be sure to replace the battery with the same or equivalent type recommended by the manufacturer.

3. Lithium batteries contain toxic substances and should not be opened, crushed, or burned for disposal.

Precautions

Specification

Samsung Electronics 2-1

2. Specification

2-1 Printer Engine

2-2 Head

Technology

Speed Color (*1)

Mono (*2)

Resolution

Color Mono

Printing Width

Feeding Method

Automatic

Manual Tray Emulation Printer Driver Interface

Thermal Inkjet 1-pen & Print Head Swapping Type 3ppm at Draft Mode 8ppm at Draft Mode 600 x 600 dpi (1200 x 1200 dpi Addressable) 600 x 600 dpi (1200 x 1200 dpi Addressable) 203mm 130 Sheets of 20lb cut sheets No Host Based Printing (GDI) Windows 3.1/3.11, Windows 95/98 driver IEEE 1284 Compatible Parallel Interface (ECP)

Ink M-3 Ink C-3 Print Head 208 nozzles 192 nozzles Ink type Pigment Dye Ink Color Black Color Ink Yield about 600 sh. about 200 sh.

(*1) The average printing time with 15%/A4 test image of Samsung. (*2) The average printing time with 4%/A4 test image of Samsung.

Specification

2-2 Samsung Electronics

2-3 Facsimile

Compatibility Scan method Scan width Scan Resolution Scan Speed Feeding method ADF Guide Stacker Paper Tray Modem Speed Coding Method LCD

Resolution

Gray Scale & Contrast

Capacity (*3)

Back-up Time Confidential Delayed Group Dial Forced Memory Tx. Priority Tx. Memory Rx.

ITU-G3 CIS Max. 216mm, Effective: 210mm 300 x 300 dpi 3 sec Sheet-fed 30 sheets Document Input Guide Document Output Stacker (No Paper Stacker) BIN Type (No Manual Tray)

14.4 Kbps MH, MR, MMR, Error Correction Mode 2 Lines Each of 16 Characters Selectable by 1-Key, 2-LEDs

- Standard : 200 x 100 dpi

- Fine : 200 x 200 dpi (Default)

- Superfine : 300 x 300 dpi Selectable by 1-Key, 2-LEDs

-Darken

- Lighten

- Photo : Error diffusion SF-4500/Msys4700 : 1.0 Mbyte (Factory Option : 3M)

SF-4500C/Msys4800/MJ-4500C : 0.5 Mbyte (Factory Option : 2.5M) 30 Minutes (Continuous Power Failare) No Upto 30 Locations 5 Number Programmable Yes Yes Automatic reception when paper empty.

GENERAL

SCANNING

MEMORY

(*3) Monochromatic CCITT NO. 1 CHART can be saved by 80 sheets per 1.0M Byte.

Specification

Samsung Electronics 2-3

2-3 Facsimile (continued)

One-touch Dial Speed Dial Chain Dial Handset & Cradle On-hook Dial Last Number Redial Auto Busy Redial No Power Operation Hold & Mute Pause Ringer Volume Tone/pulse Select Flash Mercury DRPD TX/RX Journal Image TCR Delayed Dial List System Data Tel Number List Help List Multipage Copy Gray Scale Reduction &

Enlargement Answering I/F Ext. Phone Polling Sensors Error Indicator Voice Request Real Time Clock RTI

20 Locations 50 Locations Yes Option Yes, 1-Key Yes, 1-Key Yes UK : CALLING only, Other Country : No No Yes, Use Redial Key S/W Option Setting (4Steps) S/W Option setting (Pulse for NPO) UK : Yes, Other Country : No No US : Yes, Other Country : No Yes Yes, Reduction of First Page Sent by Memory Tx Yes Yes Yes Yes Upto 99 Pages 256 Levels 25%~200%

(Reference is the top center of Document) Yes 1-jack, Extension Phone Transfer Yes No Paper, Paper Jam 1-LED Yes, On-hook Dial Yes Yes

TELEPHONE

REPORT & LIST

COPY

TEL I/F

OTHERS

Specification

2-4 Samsung Electronics

2-4 Scanner

Compatibility TWAIN Technology Platen CIS Light Source for Color CIS RGB LEDs (Line Order Control)

2-5 Power & Size

2-6 Accessaries

Power Source USA : 110V 60 Hz, UK/GER : 220V 50 HZ Dimensions (W x D x H) 360 x 325 x 190 mm (Without Handset) Weight 5.7Kg

Tel

Handset / curlcord

Tel Line Power Cord Parrallel Cable FAX Driver Ink Cartridge Manual Carrier Sheet

Bundle S/W

Contents (*5) (one CD-ROM)

Supply

1EA / 1EA 1EA 1EA No 2 Diskettes INK-M3 (MONO) 1EA (*4), INK-C3 (COLOR) 1EA (*4’) Yes Yes (*4) Electronic Manual, Prt Driver, Presto page manager, Smart_Fax,

Photo Album, Twain Driver Default

(*4) SF-4500/SF-4500C/Msys4700/Msys4800 only (*4’) SF-4500C/MJ-4500C only (*5) The smart_fax allows a on-screen remote control.

Samsung Electronics 3-1

3. Installation

3-1 Handset and Handset Cradle

1. Plug one end of the coiled cord into the jack on the handset.

2. Plug the cradle’s modular cords into the modular jacks on the left side of your machine.

3. Attach the handset cradle to the main body. Insert the two tabs of the cradle into the slots on the left side of the main body as shown, and push it up.

Note: If you want to remove the handset, slide it down, then take it out.

1. Pull the document tray upward. 2. Fold out the extender on the document tray.

0000000000

00000000000000000000000000

Cradle

Handset

Be sure to insert white cord into the front hole

3-2 Document Tray

3-2

Samsung Electronics

3-3 Document Exit Tray

1. Insert the two tabs on the document exit tray into the slots on the front of your machine.

2. Fold out the extender, if necessary.

3-4 Telephone Line

Plug one end of the telephone line cord into the TEL LINE jack and the other end into a standard phone wall jack.

Document exit tray

Extender

3-5 Extension Phone (Optional)

Plug one end of the modular cord into the EXT.TEL jack on the back of your machine.

Plug the other end of the cord into a modular jack on a telephone answering device or a regular telephone to use as an extension.

Samsung Electronics 3-3

3-6 AC Power Cord

Plug one end of the cord into the back of the machine and the other end into a standard, grounded 3-prong AC power outlet.

The machine turns on. All lamps on the control panel light up and the LCD displays ‘SYSTEM INITIAL’ then ‘PAPER OUT’. Load the paper as described on page 3-4.

If you want to turn it off, unplug the power cord.

Note : If documents are deleted from memory due to a power failure, the machine automatically prints out a Power failure report after power is supplied.

1. Connect a bi-directional parallel printer cable to the 36 pin printer jack on your machine.

It is recommended to use the parallel cable that supports IEEE-1284 bi-directional communications.

2. Fasten the metal clips to the parallel cable.

3. Connect the other end of the parallel cable to your computer.

3-7 Connecting Printer Cable

Printer cable

3-4

Samsung Electronics

3-8 Loading Paper

1. Pull the paper support on the paper bin all the way up.

2. Fan the paper and insert the paper with the print

side facing you.

3. Hold the left paper guide and move it to the right to match the width of the paper.

The LCD displays ‘PAPER OUT’ when paper is not loaded. You can load approximately 130 sheets of paper.

3-9 Loading an Envelope

You can load a standard or non-standard sized envelope.

Paper support

Paper Guide

1. Turn the envelope guide upright.

2. Load the envelope and move it to the far right 1. Then push it slightly down 2. The right edge of the envelope must align with the raised edge of the envelope guide.

3. Slide the left paper guide to the right to match the width of the envelope.

Notes :

•If you remove the envelope after it is loaded, you

must press the Form Feed button to load the envelope again.

•The acceptable width of the envelope is in the

range of 98.5mm ~ 215.9mm.

•The envelope should be made of 20-24lb paper.

Envelope Guide

Paper Guide

Samsung Electronics 3-5

3-10 Installing Print Cartridge

3-10-1 Print Cartridge

1. When you install a new print cartridge, press the

Cartridge button on the control panel. The LCD displays ‘CHECK CARTRIDGE! PLEASE INST ALL’, and the print cartridge moves to the load position.

If you install a color cartridge, use ‘Install Cartridge’ tab in the SF4400 Control Program on your PC.

2. Lift the control panel 1 with your hand and open the cartridge compartment cover 2.

3. If you are replacing a used cartridge, remove the old cartridge.

Pull the print cartridge handle toward you until you hear a click, then remove the print cartridge.

4. Remove the new print cartridge from its packaging. Hold the print cartridge by the black areas or colored top only. Do not touch the copper area.

5. Carefully remove the tape covering the printhead. Be sure to remove all the tape.

Control panel

Cartridge compartment cover

Cartridge handle

3-6

Samsung Electronics

6. Insert the print cartridge in the carrier.

7. Push the cartridge firmly in the direction of the arrow until it clicks into place.

8. After installing the print cartridge, close the cover and replace the control panel.

9. Use ‘Install Cartridge’ tab on your PC for a color

cartridge. The LCD displays ‘THE CARTRIDGE IS 1:NEW

2:USED’.

10. Choose ‘1:NEW’ by using the F or E button, or

by pressing the 1 button.

11. Press the Cartridge button. The LCD displays

briefly ‘MONO INSTALLED’ (or ‘COLOR INST ALLED’for color print cartridge).

Use ‘Install Cartridge’ tab on your PC for a color cartridge.

If the cartridge is not installed properly, the LCD displays ‘CHECK CARTRIDGE! PLEASE INST ALL’. Remove the cartridge and re-insert it.

Notes :

• When you install a new cartridge, you must choose

‘1:NEW.’ When you install a used cartridge, select ‘2:USED’, which helps you check the amount of ink remaining. If you mix up several used cartridges, it will be difficult to check the amount of ink remaining. Once a new print cartridge is installed, use it until it has completely run out of.

• If you want to install a color cartridge to print a file

from your PC, you should use ‘Install Cartridge’ tab in the SF4500 Control Program on your PC. If you use the Cartridge button on this machine, the machine beeps a warning tone and briefly displays

‘RE-INSTALL COLOR USING PC-DRIVER’. Press ‘Install Cartridge’ tab on your

PC, or the file may print using composite black.

Samsung Electronics 3-7

3-10-2 Print Cartridge Storage Unit

The print cartridge storage unit provides a convenient place to store an extra black or color print cartridge, and prevents an opened cartridge from drying out.

TO STORE A PRINT CARTRIDGE IN THE STORAGE UNIT

Insert the print cartridge into the storage unit and slightly push it down.

When switching between the color and black print cartridges, keep the unused one in the print cartridge storage unit. The storage unit prevents the print cartridge from drying out while providing easy access to it.

TO REMOVE A PRINT CARTRIDGE FROM THE STORAGE UNIT

Push the cartridge slightly down and pull it toward you.

Storage unit

Cartridge

Samsung Electronics 4-1

4. Disassembly and Reassembly

4-1 General Precautions on Disassembly

When you disassemble and reassemble components, you must use extreme caution. The close proximity of cables to moving parts makes proper routing a must. If components are removed or replaced, any cables disturbed by the procedure must be replaced as close as possible to their original positions. Before removing any component from the machine, note the cable routing that will be affected.

Whenever servicing the machine, you must perform as follows:

1. Check to verify that documents are not stored in memory.

2. Move the printer cartridge to far right to cap the nozzle.

3. Unplug the power cord.

4. Use a flat and clean surface.

5. Replace only with authorized components.

6. Do not force plastic-material components.

7. Make sure all components are in their proper position.

1. Lift the control panel using hand.

2. Push the bushing on both ends of the roller slightly inward, then rotate it until it reaches the slot as shown below. Then lift the roller out.

Note : Check the roller for any dirt. If dirty, wipe it

off with soft cloth dampened with water. If the roller is heavily worn, replace it with a new one.

4-2 White Roller Ass’y

Bushing

White roller

Control panel

4-2 Samsung Electronics

Disassembly

4-3 Top Cover Ass’y

1. Lift the control panel and open the print cartridge compartment cover. Remove the white roller ass’y. Remove the six screws shown below.

2. Remove the print cartridge. Remove the two screws shown below and take out the top cover ass’y.

Note: When you reassemble the top cover ass’y,

make sure the tabs in the bottom of the ass’y fit into the slots in the base ass’y.

Control panel

Cartridge compartment cover

Top cover ass’y

Base ass’y

Samsung Electronics 4-3

Disassembly

4-4 Rear Cover Ass’y

1. Holding the paper guide, move it in the direction of arrow.

2. Remove the storage Unit, and remove the six screws shown below.

3. Holding the rear cover ass’y, take it out by rotating it to be released properly.

Paper guide

Rear cover ass’y

4-4 Samsung Electronics

Disassembly

4-5 Base Ass’y

4-5-1 Rollers (ADF Roller, Drive Roller,

Exit Shaft)

1. Before you disassemble the rollers, you should remove:

– Top Cover Ass’y (see page 4-2)

2. Take out the rollers from the base ass’y.

Note : Clean the surface of the rollers with ethyl alco-

hol. After wiping them, you must dry them completely.

4-5-2 CIS (Contact Image Sensor)

1. Before you disassemble the CIS, you should remove: – Top Cover Ass’y (see page 4-2)

2. Remove the drive roller as described in ‘4-5-1 Rollers’.

3. Remove the one screw securing the CIS ass’y and unplug the CIS harness. Take out the CIS ass’y.

4. Turn the CIS ass’y over. Remove the one screw to release the CIS from the bracket.

Note: Be careful not to lose the springs.

Note : Check the glassy surface of the CIS for any

stain or scratch. If stained, wipe off with ethyl alcohol. If it is heavily stained or scratched, replace it with a new one.

Note : There is a little difference mono bracket and

color bracket.

ADF roller

Drive roller

Exit shaft

CIS ass’y

Drive roller CIS harness

Spring

Mono

Bracket

CIS

Spring

Color

Bracket

CIS

Samsung Electronics 4-5

Disassembly

4-5-3 Scan Motor

1. Before you disassemble the CIS, you should remove:

– Top Cover Ass’y (see page 4-2) – Rear Cover Ass’y (see page 4-3)

2. Unplug the motor connector from the main PBA. Make sure the harness is released from two hooks securing the harness as shown below.

3. Remove the two screws as shown below and take out the scan motor ass’y.

4. Remove the two screws securing the motor to the motor bracket.

Main PBA

Motor harness

Hook1

Hook2

Scan motor ass’y

Motor bracket

4-6 Samsung Electronics

Disassembly

4-5-4 SMPS

1. Before you disassemble the SMPS, you should remove:

– Rear Cover Ass’y (see page 4-3)

2. Unplug the SMPS connector from the Main PBA. Make sure the harness is released from the hook as shown below.

3. Remove the one screw securing the ground wires to the bracket as shown.

4. Remove the one screw securing the ground wire to the main frame as shown. Make sure the harness is released from the hook securing as shown below.

5. Pushing down the hooks on both ends, pull out the SMPS.

Hook

Bracket-LF

SMPS connector

LIU ground wire

Ground wire 2

SMPS

Main frame

Hook

SMPS

Samsung Electronics 4-7

Disassembly

4-5-5 LIU PBA

1. Before you disassemble the LIU PBA, you should remove:

– Rear Cover Ass’y (see page 4-3)

2. Remove the one screw securing the ground wires to the bracket.

3. Pulling the snap fits locking the PBA outward, push up the LIU PBA.

4. Unplug all the connectors from the LIU PBA.

Bracket-LF

LIU ground wire

SMPS ground wire

LIU PBA

4-8 Samsung Electronics

Disassembly

4-5-6 Speaker and Buzzer*

1. Before you disassemble the speaker and buzzer, you should remove:

– Printer Unit (see page 4-11)

2. Remove the four screws securing the speaker and buzzer .

4-5-7 Volume PBA

1. Before you disassemble the Volume PBA, you should remove:

– Top Cover Ass’y (see page 4-2)

2. Unplug the one connector and remove the one screw shown below, and take out the PBA.

Speaker

Buzzer*

*Optional

Samsung Electronics 4-9

Disassembly

4-6-1 ADF Rubber Pad

1. Open the OPE unit.

2. Insert a flat blade screw driver into the slot as shown below, and release the latches. Take out the rubber holder, sheet ADF and the rubber pad.

Notes:

• When you reassemble the rubber pad, be sure that the rubber pad, sheet ADF and holder fit into the guide boss and the holder latches fit into the corresponding hole. Then push firmly until it clicks.

• Clean the surface of the rubber pad with ethyl alcohol. After wiping it, be sure to dry it. Check the rubber wear. If the wear reaches 1/2 its original thickness, replace it with a new one.

OPE unit

Rubber pad

Rubber holder

Guide boss

4-6 OPE Ass’y

4-10 Samsung Electronics

Disassembly

4-6-2 OPE Unit

1. Before you disassemble the OPE unit, you should remove:

– Top Cover Ass’y (see page 4-2) – Rear Cover Ass’y (see page 4-4)

2. Unplug the OPE (NPO) connector from the LIU

PBA.

3. Turn the tie stopper 90 degrees as shown below and take out the OPE unit.

OPE unit

Tie stopper

Samsung Electronics 4-11

Disassembly

4-6-3 Roll Pinch

1. Before you disassemble the roll pinch, you should remove:

– OPE Unit (see page 4-9)

2. Remove the four screws securing the OPE unit.

3. Turn the upper scan frame of the OPE unit over.

4. Remove the three screws and take out the spring pinch. Then take out the roll pinch.

4-6-4 OPE PBA

1. Before you disassemble the OPE PBA, you should remove: – OPE Unit (see page 4-9)

2. Remove the four screws securing the OPE unit.

3. Remove the nine screws and take out the PBA and LCD.

Notes:

• Do not turn the OPE unit upside down after you

remove the screws securing the PBA. Keys and rubber contacts may be separated and easily lost.

• When you reassemble the OPE unit, make sure

the keys are in correct position.

• When you reassemble the PBA, secure the screws

according in the order of the number printed on the PBA.

• After reassembling, operate the machine to make

sure it works properly.

• After reassembling, make sure the LCD is not

blocked.

Upper scan frame

Spring pinch

Roll pinch

4-12 Samsung Electronics

Disassembly

4-7 Printer Ass’y

4-7-1 Printer Unit

1. Before you disassemble the printer unit, you should remove: – Top Cover Ass’y (see page 4-2) – Rear Cover Ass’y (see page 4-3)

2. Remove the two screws securing the printer unit, and unplug the six connectors from the Main PBA. Take out the printer unit.

Note: When you reassemble the unit, do not pinch or

short the wire harness.

3. Remove the ASF feeder ass’y from the printer unit by pushing the tab inward and take the ass’y out in the direction of arrow.

Main PBA

Print Head

Main PBA

Speaker

SMPS

Senser

LIU OPE

CIS

LF motor

TX motorCR motor

ASF feeder ass’y

Samsung Electronics 4-13

Disassembly

4-7-2 ASF Feeder Ass’y

1. Before you disassemble the ASF feeder ass’y, you should remove:

– Rear Cover Ass’y (see page 4-3)

2. Unplug all connectors from the Main PBA and remove the two screws shown below.

4. Remove the one screw, then remove pick up shaft from the ASF frame while pushing it to the right to disengage the gear.

Note : When you reassemble the ASF feeder ass’y,

insure the harness in the line feed motor is not pinched or shorted.

Pick up shaft

4-14 Samsung Electronics

Disassembly

4-7-3 Home Ass’y

1. Before you disassemble the home ass’y, you should remove: – Printer Unit (see page 4-11)

2. Pushing the both ends of the home ass’y, take out the ass’y in the direction of arrow.

4-7-5 Base Frame Ass’y

1. Before you disassemble the base frame ass’y, you should remove:

– Printer Unit (see page 4-11) – Carrier Ass’y

2. Remove the friction ass’y, then take out the actuator feed.

3. Pull out the base frame ass’y.

Home ass’y

Roller friction ass’y

Actuator feed

Base frame ass’y

Samsung Electronics 4-15

Disassembly

4-7-4 Carrier Ass’y

1. Before you disassemble the carrier ass’y, you should remove:

– Printer Unit (see page 4-11)

2. Remove the cable holder. Remove the one screw on the right side of the main frame, and remove the spring. Then take out the carrier shaft.

4-7-6 Feed Roller Ass’y

1. Before you disassemble the feeder roller ass’y, you should remove: – Printer Unit (see page 4-11) – Carrier Ass’y – Base Frame Ass’y

2. Remove the bearing feed from the main frame. Pull the feeder roller in the direction of arrow and take it out.

Carrier shaft

Head cable

Cable holder

Feed roller

Bearing feed

+ 75 hidden pages