Samsung SF4500 User manual

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

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 safe-
ty 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 dielec-
tric specifications. A replacement 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 per-
sonal 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 suf-
ficient 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 unpack-
aged 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 dis-
posal.
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
ImageTCR
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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 communica-
tions.
2. Fasten the metal clips to the parallel cable.
3. Connect the other end of the parallel cable to
your computer.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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 enve-
lope 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
12

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
INSTALL’, 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 1with 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 packag-
ing. 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
1
2
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 For Ebutton, or by
pressing the 1 button.
11. Press the Cartridge button. The LCD displays
briefly ‘MONO INSTALLED’ (or ‘COLOR
INSTALLED’ 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
INSTALL’. 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 remain-
ing. 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 APRINT 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 APRINT 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 slight-
ly 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
A
B
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
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