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
Page 4
1-2Samsung 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
Page 5
Specification
Samsung Electronics2-1
2. Specification
2-1 Printer Engine
2-2 Head
Te c h n o l o g y
Speed Color (*1)
Mono (*2)
Resolution
C o l o r
M o n o
Printing Wi d t h
Feeding Method
A u t o m a t i c
Manual Tr a y
E m u l a t i o n
Printer Driver
I n t e r f a c e
Thermal Inkjet
1-pen & Print Head Swapping Ty p e
3ppm at Draft Mode
8ppm at Draft Mode
600 x 600 dpi (1200 x 1200 dpi A d d r e s s a b l e )
600 x 600 dpi (1200 x 1200 dpi A d d r e s s a b l e )
2 0 3 m m
130 Sheets of 20lb cut sheets
N o
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 D y e
Ink Color Black C o l o r
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.
Page 6
Specification
2-2Samsung Electronics
2-3 Facsimile
C o m p a t i b i l i t y
Scan method
Scan width
Scan Resolution
Scan Speed
Feeding method
A D F
G u i d e
S t a c k e r
Paper Tray
Modem Speed
Coding Method
L C D
R e s o l u t i o n
Gray Scale & Contrast
Capacity (*3)
Back-up Time
C o n f i d e n t i a l
D e l a y e d
Group Dial
Forced Memory Tx.
Priority Tx.
Memory Rx.
I T U - G 3
CIS
Max. 216mm, Effective: 210mm
300 x 300 dpi
3 sec
S h e e t - f e d
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
SF-4500C/Msys4800/MJ-4500C : 0.5 Mbyte (Factory Option : 2.5M)
30 Minutes (Continuous Power Failare)
N o
Upto 30 Locations
5 Number Programmable
Y e s
Y e s
Automatic reception when paper empty.
G E N E R A L
S C A N N I N G
M E M O R Y
(*3) Monochromatic CCITT NO. 1 CHART can be saved by 80 sheets per 1.0M Byte.
Page 7
Specification
Samsung Electronics2-3
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
P a u s e
Ringer Vo l u m e
Tone/pulse Select
F l a s h
M e r c u r y
D R P D
TX/RX Journal
Image T C R
Delayed Dial List
System Data
Tel Number List
Help List
Multipage Copy
Gray Scale
Reduction &
E n l a r g e m e n t
Answering I/F
Ext. Phone
P o l l i n g
S e n s o r s
Error Indicator
Voice Request
Real Time Clock
RT I
20 Locations
50 Locations
Ye s
Option
Yes, 1-Key
Yes, 1-Key
Y e s
UK : CALLING only, Other Country : No
N o
Yes, Use Redial Key
S/W Option Setting (4Steps)
S/W Option setting (Pulse for NPO)
UK : Yes, Other Country : No
N o
US : Yes, Other Country : No
Ye s
Yes, Reduction of First Page Sent by Memory T x
Ye s
Ye s
Ye s
Ye s
Upto 99 Pages
256 Levels
2 5 % ~ 2 0 0 %
(Reference is the top center of Document)
Ye s
1-jack, Extension Phone T r a n s f e r
Ye s
No Paper, Paper Jam
1 - L E D
Yes, On-hook Dial
Ye s
Ye s
T E L E P H O N E
R E P O RT &
L I S T
C O P Y
T E L I / F
O T H E R S
Page 8
Specification
2-4Samsung Electronics
2-4 Scanner
Compatibility T WA I N
Technology Platen CIS
Light Source for Color CIS RGB LEDs (Line Order Control)
2-5 Power & Size
2-6 Accessaries
Power Source U S A : 110V 60 Hz, UK/GER : 220V 50 HZ
Dimensions (W x D x H) 360 x 325 x 190 mm (Without Handset)
Weight 5 . 7 K g
Tel
Handset / curlcord
Tel Line
Power Cord
Parrallel Cable
FAX Driver
Ink Cartridge
M a n u a l
Carrier Sheet
Bundle S/W
Contents (*5)
(one CD-ROM)
S u p p l y
1 E A / 1EA
1 E A
1 E A
N o
2 Diskettes
INK-M3 (MONO) 1EA (*4), INK-C3 (COLOR) 1EA ( * 4 ’ )
Ye s
Yes (*4)
Electronic Manual, Prt Driver, Presto page manager, Smart_Fax,
Photo Album, Twain Driver
D e f a u l t
(*4) SF-4500/SF-4500C/Msys4700/Msys4800 only
(*4’) SF-4500C/MJ-4500C only
(*5) The smart_fax allows a on-screen remote contro l .
Page 9
Samsung Electronics3-1
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
Page 10
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
Page 11
Samsung Electronics3-3
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 ‘SYSTEMINITIAL’ 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.
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
Page 12
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
1
2
Page 13
Samsung Electronics3-5
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! PLEASEINSTALL’, 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
1
2
Cartridge
handle
Page 14
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 ‘COLORINSTALLED’ 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! PLEASEINSTALL’. 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.
Page 15
Samsung Electronics3-7
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
Page 16
Samsung Electronics4-1
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
B
A
Page 17
4-2Samsung 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
Page 18
Samsung Electronics4-3
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
Page 19
4-4Samsung 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
Page 20
Samsung Electronics4-5
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
Page 21
4-6Samsung 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
Page 22
Samsung Electronics4-7
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
Page 23
4-8Samsung 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
Page 24
Samsung Electronics4-9
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
Page 25
4-10Samsung 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
Page 26
Samsung Electronics4-11
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
Page 27
4-12Samsung 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
Page 28
Samsung Electronics4-13
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
Page 29
4-14Samsung 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
Page 30
Samsung Electronics4-15
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
Page 31
4-16Samsung Electronics
Disassembly
4-7-7 Line Feeder Bracket Ass’y
1. Before you disassemble the line feeder bracket
ass’y, you should remove:
– Printer Unit (see page 4-11)
– Feeder Roller Ass’y (see page 4-12)
2. Remove the two screws and take out the LF
bracket ass’y.
4-7-8 Main PBA
1. Before you disassemble the Main PBA, you
should remove:
– Top Cover Ass’y (see page 4-2)
– Rear Cover Ass’y (see page 4-3)
2. Remove the three screws securing the Main PBA.
When you remove the one screw at the bottom,
pull the timing belt.
3. Unplug all connectors from the Main PBA.
4. Pull the sensor lever towards you and take out
the Main PBA.
LF bracket ass’y
Main PBA
Sensor lever
Timing belt
Page 32
6. Circuit
6-1 Main PBA
6-1-1 Summary
The main circuit that consists of CPU, MFP
c o n t roller (built-in 32bit RISC processor core :
ARM7TDMI) including various I/O device
drivers, system memory, scanner, printer, motor
d r i v e r, PC I/F, and FAX transceiver controls the
whole system. The entire stru c t u re of the main
c i rcuit is as follows:
Fig.6-1-1. Entire Structure of Main Circuit for Each Key Signal
Samsung Electronics6-1
Page 33
6-1-2 MFP Controller (KS32C6200 : U16)
M F P C o n t roller consists of CPU(ARM7TDMI RISC
p rocessor), 2K-byte cache, data and address buses,
serial communication part with LIU(Line Interface
Unit), OPE(OPERATION PANEL) print head cont ro l l e r, parallel port interface, external DMApart to
receive data from external color image pro c e s s o r
(SCANIP:U18), LF/CR motor diver
c o n t roller and I/O contr o l l e r.
6-1-2-1. SYSTEM CLOCK
The internal clock frequency is 30MHz. 30MHz
system clock (MCLK) supplied from the outside is
used without being divided inside.
6-1-2-2. DATA& ADDRESS BUS CONTROL
• /RD & /WR
/RD & /WR signals are synchronized with
MCLK(30MHz) and become LOW ACTIVE.
These signals are strobe signals used to read and
write data when each CHIP SELECT is connected
with /RD and /WR pin of RAM, ROM, MODEM
and the outside devices and becomes active.
• C H I P SELECT (/IP_CS, /ROMCS, /MCS /
R A M C S )
- /IP-CS : SCANIP(U18) CHIP SELECT (LOW
A C T I V E )
- /ROMCS : ROM/FLASH MEMORY(U5) CHIP
SELECT (LOW A C T I V E )
- /MCS : MODEM(U15) CHIP SELECT (LOW
A C T I V E )
- /RAMCS : SRAM (U14) CHIP SELECT (LOW
A C T I V E )
When each CHIP SELECT is low, data can be read or
w r i t t e n .
• D0 - D15
- 16bit data bus
• A0 - A 1 7
- ADDRESS BUS (A18 - A21 are re s e r v e d . )
6-2Samsung Electronics
Page 34
6-1-2-3, LIU(Line Interface Unit) Serial
Communication Part
U A RT (Universal A s y n c h ro n o u s
R e c e i v e r / Transmitter) at KS32C6200 enables the
main and LIU, main and OPE to transmit serial
Fig.6-1-2. UART BLOCK DIAGRAM
data. The block diagram of UART is as follows:
(Fig.6-1-2) KS32C6200 has 2 UART channels. The
baud rate is 9600bps.
Fig.6-1-3 UART DATAFORMAT
Samsung Electronics6-3
Page 35
6-1-2-4 EXTERNAL D M A
It brings data from an external device (SCANIP:U18)
using DMAchannel 0. DMAREQUEST sent from an
external device to KS32C6200 activates DMA
ACKNOWLEDGE signal and drives DMAchannel 0
to produce CHIP SELECT and READ STROBE (/RD)
at the external
device and bring data from it. It generates address of
destination memory, CHIP SELECT and WRITE
STROBE (/WR) in order to move this data into
destination memory, and then stores the data.
Fig.6-1-4 EXTERNAL DMA TIMING DIAGRAM
6-4Samsung Electronics
Page 36
6-1-2-5. DRAM CONTROLLER
6-1-2-6. PARALLEL PORT INTERFACE
As KS32C6200 has DRAM controller in it, DRAM can
be connected with external memory.
The control mode of DRAM controller enabling
E A R LY WRITE, NORMALREAD, PAGE MODE,
and BYTE/HALF WORD ACCESS supports EDO
DRAM as well as normal DRAM. DRAM
READ/WRITE signals are /R D and /W Rs i g n a l s
used to control system buses. It supports CAS
BEFORE RAS for DRAM REFRESH and self-re f re s h
mode for DRAM backup. Connected with common
/L C A S , /U C A Sand RAS [1:0], it consists of 2 banks.
Though each may be connected with up to 1M - 4M
h a l f w o rd, two (2) of 512 Kbytes are
connected for this pro d u c t .
This part connected with the computer through the
c e n t ronics connector makes possible parallel
interface with the computer. Data is transmitted
a c c o rding to the standard of IEEE P1284. This MFP
c o n t roller supports compatibility mode the
traditional way to transmit print data, nibble mode
(4bit data) to upload data to the computer, and
duplex high-speed transmission with the computer
E C P (Extended Capabilities Port: 8bit data
transmission) all together.
It enables PC data to be printed and scanned data to
be uploaded quickly to the computer. Besides,
various data transmission and reception with the
computer such as uploading received fax data,
downloading fax data to be sent, and monitoring system control signals and system conditions are carried
out here .
This part produces major control signals used to
drive INKJET head. It consists of signals to drive
head nozzles, /HGA[13:1], HOE[16:1], /F A U LTT E S T, /HEAD-EN, and BIASOFF, and consists of signals to check the status of the head, HEAD-DATA .
It has double height print head, system 208 nozzles
for mono and 192 nozzles for color, and uses
/HGA[13:1], HOE[16:1] signals and /HEAD-EN to
drive these nozzles. Fig.5-1-8 is timing diagram of
each signal.
Fig.6-1-8 Timing Diagram to Drive Head
Samsung Electronics6-7
Page 39
Fig.6-1-9. Timing Diagram for Each Nozzle
The above control signals are sent to head driver and
the head driver converts these signals to the level
( + 11.75V) to drive head nozzles.
M F P C o n t roller (KS32C6200:U16) supports 2
stepper motors. It controls CR (Carriage Return)
motor used to print documents and LF (Line Feed)
motor used to feed and eject paper.
CR motor controller can support 75, 150, 200, 300,
600, or 1200dpi according to resolution, while LF
motor controller supports uni-polar and bi-polar
a c c o rding to the kind of motors. Though full step,
half step and software control are possible for both,
bi-polar CR motor is controlled half step and LF
motor is controlled half step and quarter step here .
6-8Samsung Electronics
Page 40
5-1-2-9. I/O PORT FOR KS32C6200
PIN NAME
G O P 0 / T X D 0
G O P 1 / T X D 1
G O P 2 / n E D A C K
G O P 3 / TO N E
G O P 4 / n R S T 0
G O P 5 / n I O W R 1
G O P 6 / n I O W R 2
G O P 7 / n I O R D 1
G O P 8 / n I O R D 2
G O P 9 / C L K O U T
G O P 1 0 / F I R E P S
G O P 11 / n H S C
– Head Data Read
G O P 1 2 / n H S M
G I P 0 / n R X D 1
G I P 1 / n R X D 2
G I P 2 / n E I N T 1
G I P 3 / n E I N T 2
G I P 4 / n E D R E Q
G I P 5 / U C L K
G I O P 0 / T C K
G I O P 1 / T M S
G I O P 2 / T D I
G I O P 3 / n T R S T
G I O P 4 / T D O
3 0
1 2 3
1 2 5
1 3 6
1 3 7
1 3 8
1 2 8
3 7
3 8
3 9
4 0
4 1
p
I
I
I
I
I
I
B
B
B
B
B
C R _ R E F
L I U _ R X D
O P E _ R X D
n M I R Q
n T X _ I N T
n X D R E Q
H E A D _ D ATA
T C K
T M S
T D I
n T R S T
T D O
LQ Mode Printing Draft Mode Printing
Serial Data Input from ILIU
Serial Data Input from OPE
– Modem Interrupt request
SCAN motor Interrupt
–
–
Serial Head Data from Head
Test Clock for ICE
TA P Controller Enable –
Serial Data Input from Emulator
– TA P Controller Reset
Serial Data Output to Emulator
D M ARequest from Scan_IP
r e q u e s t
Samsung Electronics6-9
Page 41
6-1-2-10. RESET CIRCUIT
As for this product, there are 2 power resets of primary reset(/F-POR) and secondary reset(/POR) and
also reset by watchdog timer (/RSTO). Primary re s e t
is used to initialize flash memory when the system is
turned on, while secondary reset is used to initialize
the whole system by initializing MFP c o n t ro l l e r
(KS32C6200) after primary
reset. Primary reset makes flash memory wait in
READ mode to fetch program
codes, and secondary reset makes the main
c o n t roller (KS32C6200) wake up and initialize
external peripherals to operate the system.
Fig.5-1-10 is Power Reset Timing Diagram.
Fig.6-1-10 POWER RESET TIMING DIAGRAM
• POWER MONITOR (U103: KIA7045F)
If +5V supplied to KIA7045F is so unstable as to
reach +4.65V - +4.35V (typically 4.5V), it will
recognize it as power failure. Then KIA7045F
output terminal becomes low (0V) and the voltage
is impressed to flash memory and KS32C6200, ru n-
KS32C6200 are reset first. Thereafter modem, print
c o n t rol parts and SCANIP(Color Image Pr o c e s s o r )
linked to /RSTOUT terminal of KS32C6200 are
reset as well. KIA7045F output
terminal of open drain stru c t u re is pulled up 5.1k Ω
and put out.
ning RESET (LOW ACTIVE). Flash memory and
6-10Samsung Electronics
Page 42
6-1-3 System Memory
6-1-4-2. SCAN RESOLUTION
System memory consists of 512KB flash memory,
2MB DRAM, and 32KB SRAM. Flash memory,
DRAM and SRAM are selected by each CHIP
SELECT (/ROMCS, /RAS0, /RAS1, /LCAS, /UCAS,
/RAMCS), and data is accessed half word (16bits) by
half word and one byte (8bits) by one byte.
DRAM is designed to be able to add 2MB to the basic
2MB so that buyers can make their options.
In addition, the backup circuit built in for DRAM
keeps data in user memory during at least
30-miniute power failure. Super capacitor
(1F) is used as a backup element. SRAM holds
telephone numbers and journal information and can
keep minimum information using backup battery
( L i t h i u m ) .
6-1-4. Scanner
6-1-4-1. SUMMARY
This sheet-fed type device to read manuscripts has
300dpi CIS as an image sensor. The design is focused
on 30-sheet ADF and 3-second quick scan functions.
– Normal(Quick) : 1/3.85mm, 1/8mm (98×2 0 3 d p i )
– Fine : minor scanning 1/7/7mm, main
scanning 1/8mm (196×2 0 3 d p i )
– Super Fine : minor scanning 1/300inch, main
scanning 1/300inch(300×3 0 0 0 d p i )
6-1-4-3. CIS : Contact Image Sensor improves
p roductivity and is designed to be replaced easily.
Color models have color CIS.
➀ SF-4500/Msys4700/MJ-4500 : BN-30216D, 10Pin
C o n n e c t o r
– Minimum Scan Line Time: 1.8mS
– Light Source Power : 12V
– Maximum Pixel frequency : 2MHz
– Effective Sensor Element : 2552
– Clamp Level : 1.2 - 1.6V
– Bright Output : MIN 0.8V
➁ SF-4500C/Msys4800/MJ-4500C : CXB-30216G, 12
Pin Connector
– Minimum Scan Line Time for one color : 1.5mS
– Color Separation : RGB LED transfer mode
– Light Source Power : 12V
– Maximum Pixel frequency : 2MHz
– Effective Sensor Element : 2552
– Clamp Level : 1.2 - 1.6V
– Bright Output : MIN 0.8V
C I S
S C A N I P
CIS Control
Fig.6-1-11 CIP1A Block Diagram
Samsung Electronics6-11
Page 43
6-1-4-4. IMAGE PROCESSING
1) Image signal input: CIS output signals are offset at
1-4V with about 2.8V white level. Optimum input
level of SCANIP is 1.5V offset and 3.5V white
level. So OPA M P is used to design
interface circuit of SCANIP.
2) Image processing : The scanner reads pixel data
value of image sensor CIS(Contact Image Sensor)
300dpi lines by 300dpi lines, and stores it in scan
b u ffer through TIP algorithm if Normal is
selected for Image Processor SCANIP, thro u g h
E r ror Diffusion algorithm if medium, or thr o u g h
D M A without algorithm if PC Scan mode.
Commonly for all the three modes, it is pro c e s s e d
after shading correction and gamma corre c t i o n .
5×5 Window Processing begins after data is store d
in 32K Byte external SRAM.
Image Processor SCANIPhas the following
s p e c i f i c a t i o n s :
– Internal 8bit A D C
– Black/White shading correction for each color
R . G . B
– Gamma correction for each color R.G.B
– Mono CIS (Canon, Dyna) interface
– Color CIS (Canon, Dyna, Toshiba) interface
– Automatic Motor Contro l
– Image Processing Mode : TIP, Ord e red dither,
E r ror diff u s i o n
– 256 Gray Scale
– AGC function
– PC Gray Scan function
➆ External SRAM: 32Kbyte, 15Ns Access Ti m e
3) CIS LED Driver: LED in CIS is on with 11 . 7 5 V. TR
c i rcuit is built in to drive this LED.
– Maximum LED current: 300mA
4) PC Scan function
– Resolution(V×H) : 3 0 0×3 0 0 / 7 5×75dpi
( P re-scanning mode)
1 9 6×2 0 3 / 9 8×2 0 3 d p i
– Mono Bit Depth : 8bits Gray Scan/1bit Te x t
Scan/1bit Halftone Scan
– Color Bit Depth : 24bits (8bits/R.G.B.)
– PC Interface: IEEE 1284 NIBBLE, BYTE, ECP
– T WAIN Driver: 1CD-ROM title provided along
with Bundle S/W.
5) Additional Spec.
– Scan Line Time : 2.5mS/line
– Contrast Control : 3 Step
( N o r m a l / D a r k e n / L i g h t e n )
– Enlargement & Reduction : 25 ~ 200%
6-12Samsung Electronics
Page 44
6-1-4-5 I/O PORT FOR SCANIP
R E G I S T E R
N A M E
G P I
G P O
PIN NAME
for A S I C
G P I 0
G P I 1
G P I 2
G P I 3
G P I 4
G P I 5
G P I 6
G P I 7
G P O 0
G P O 1
G P O 2
G P O 3
G P O 4
G P O 5
I / OP O RT N A M E
I
I
I
I
I
I
I
I
p
p
p
p
p
p
O K 2 P R I N T
H O M E _ S E N
r e s e r v e d
n P _ E X I T
P _ E M P T Y
n R I N G _ D E T
n H O O K _ O F F
RY / n B Y
r e s e r v e d
n O P E _ R S T
B L E D ( C / – )
R L E D ( C / – )
G L E D ( C / M )
RT C _ E N
DESCRIPTION FOR STA T E
H L
Head OK Head NG
Head parking –
– Paper Detected
Paper empty–
–Ring Detected
– H/S hook off
Flash ReadyFlash Busy
OPE reset offOPE seset on
1
1
2
BLED OnBLED Off
RLED On RLED Off
GLED OnGLED Off
RTC Enable RTC disable
G P I O 1
G P I O 2
G P O 6
G P O 7
G P I O 0
G P I O 1
G P I O 2
G P I O 3
G P I O 4
G P I O 5
G P I O 6
G P I O 7
G P I O 8
G P I O 9
G P I O 1 0
G P I O 11
G P I O 1 2
G P I O 1 3
p
p
p
p
p
p
p
p
p
p
p
p
p
p
p
p
P R E _ H E AT
C L K _ S E L
r e s e r v e d
r e s e r v e d
r e s e r v e d
r e s e r v e d
r e s e r v e d
r e s e r v e d
r e s e r v e d
r e s e r v e d
C M L O N
V O L 2
V O L 1
V O L 0
r e s e r v e d
n S P K _ C T L
Head Preheat On–
Jupiter idle mode Jupiter ?? mode
Fax or Tel Line Ext Phone Connection
C o n n e c t i o n
Bell (3 level) Volume (4 level)
Bell or Volume control
–
Audio amp. off Audio amp. on
G P I O 1 4
G P I O 1 5
p
B
T H M _ C L K
T H M _ D ATA
Clock IN for T h e r m o m e t e r
Serial Data from/to T h e r m o m e t e r
1 C/– : Color Only
2 C/M : Color/Mono
Samsung Electronics6-13
Page 45
6-1-5 Printer
6-1-5-1. GENERAL
It drives inkjet head to print printing data re c e i v e d
f rom the computer or fax data coming through the
line. It roughly consists of head driver, head
c o n t ro l l e r, and the ambient temperature sensor. Fig.61 - 11. Block Diagram of Printer shows the entire stru ct u re .
6-1-5-2. HEAD DRIVER (U26, U27, U32, U22)
This part drives and inks inkjet head. Color inkjet
head drives 192 nozzles, while mono inkjet head drives 208 nozzles. Mono inkjet head is composed of 16
g roups of 13 nozzles. As to the driver that composes
each nozzle, 13 row 7-bit driver (U26, U27) selects
head address and 16 column 8-bit
driver (U32, U33) sends head data. Head driver
converts control signals from MFP c o n t roller to
+ 11 . 7 5 V, the level to be able to drive the head, and
p rovides them for the inkjet head.
• Row Driver Circuit (HD7:U26:U27)
This is a 13-line signal impressed to row drive IC
t h rough the output port of MFPc o n t ro l l e r ( / H G A 1
- /HGA13), used as an address to drive the head in
ink cartridge. Pulse period differs according to
head driving
f re q u e n c y. In 1200dpi (in case of Head: 12KHz)
mode, timing period is 2.6usec (1/1200÷16 gro u p s ) .
The signal put in each driver(window time) is
active “L”, with the biggest driver current max
1 0 0 m Aand output voltage +1 1 . 7 5 V .
• Column Driver Circuit (HD8:U32,U33)
It is the fire enable pulse of real head. 16 lines are
put out as head driving data lines through the output port of MFP c o n t roller (HOE1 - HOE16).
Enable pulse impressed to the head is put out within window time (Low). It has the function to move
it forward or backward by the register in MFP c o nt ro l l e r. Besides the output signal may
d i ffer in accordance with the type of head (mono or
color). If there is data, printing image is put out at
“H”. If not, it is put out at “L”. In case of Babbage
head, pulse width is always 1.3use re g a rdless of
the type of the head, with the
maximum driving current 400mAand output voltage +11 . 7 5 V.
6-14Samsung Electronics
Page 46
6-1-5-3. HEAD CONTROLLER
This part consists of +22V Power Controller to
c o n t rol head driver, Fault Test, Head Detection,
Substrate Heating and ambient Te m p e r a t u re
S e n s o r. It checks and controls head driver and ink
c a r t r i d g e .
Fig.6-1-12 Block Diagram of Printer
Samsung Electronics6-15
Page 47
• +22V Power Contro l l e r
If you insert power cords, the main board will be
supplied with power. /POR signal put out thro u g h
reset circuit activates MFP c o n t ro l l e r
(K32C6200:U16) and MFP c o n t roller puts out external circuit reset signal /RST - O U T. This /
R S T-OUT signal and Vrefx (+2.5V) divided thro u g h
+30V are impressed to the input
terminal of the comparator, putting out +22V if the
output of the comparator is “high” or getting
turned off if “low”.(in case of /FA U LT-TEST
signal: HIGH) While +22V is being impressed after
/ R S T-OUT is “High”, comparator output gets
“low” and turns off +22V driving TR(TIP112) if
/ FA U LT-TEST signal is put out at “low” when you
check a short of the head driver and the ink cartridge (head).
• FA U LT TEST CIRCUIT
This is a signal to detect whether the head
receiving the output of head column driver is in a
short. After /F A U LT-TEST signal is put out at
“low” and +22V is turned “off”, “OK2PRINT”
signal is entered. The port of KS32C6200(U16)
shows normal condition if “H” and a short if “L”.
If you make FA U LT-TEST output “L” to detect
fault of the head, +22V gets off. If the head is in a
short (LOW), when the level of “/FA U LT- T E S T ”
signal goes “L” and final “OK2PRINT” output
goes “L”. KS32C6200(U16) reads this signal and
checks whether the head input receiving the
driver output is in a short. Diode cathode is
attached to each output transistor collector in the
column driver. 8 anode terminals of diode become
common as one and put out /FA U LT signal, which
is pulled up by bias circuit controlled by /F A U LTTEST and shows the condition by OK2PRINT
t h rough the comparator.
• S U B S T R ATE HEAT CIRCUIT
Mono ink cartridge of Babbage head is 600dpi head
that uses pigment ink. It is very sensitive to the
t e m p e r a t u re in and around the cartridge. In
p a r t i c u l a r, the viscosity of ink affects print quality
as it is inversely proportional to temperature by an
exponential function. This signal used to
compensate it helps you get equal inking quality
by warming the ink chamber in the cartridge with
aluminum pattern heater before starting to print if
the surrounding temperature is lower than
s t a n d a rd (below 35°…).(Refer to Timing Chart.) It
sends PRE-HEAT signal through I/O port of
SCANIP(Color Image Processor:U18) and supplies
+ 11 . 7 5 V.
Mono Head
7 0 ° C
3 5 ° C
Pre-Heat if below 35°c
Fig.6-1-13. Temperature around Mono Head
6-16Samsung Electronics
Page 48
Color Head
7 0 ° C
Fig.6-1-14. Temperature around Color Head
• HEAD DETECTION CIRCUIT
Babbage ink cartridge has 8-bit mask ROM I.D. to
check the type of cartridge. In order to detect the
head, HSM signal is used as ENABLE signal and
BA3 signal as STA RT & STO P B I T, and BA1 and
BA2 as clock signal of each bit, and ID signal in the
cartridge is put in HEAD-DATAport of KS32C6200
t h rough BSF line. With each bit
c o n t rolled, 8bit I.D data is read and ST O Pbit is put
out of BA3(LOAD) port. Then it finishes.
If data is mono, it is 07H. If color, 08H.
Fig.6-1-15. HEAD DETECTION TIMING DIAGRAM
Samsung Electronics6-17
Page 49
• SURROUNDING TEMPERATURE SENSOR
DS1621S(DALLAS SEMI.) is applied to read the
t e m p e r a t u re around ink cartridge. It is used to get
optimum inking quality by keeping the viscosity of
ink in the cartridge in the specified lerel. The way
to read temperature is similar to EEPROM, cont rolled by THM-CLK, THM-DATALINE. Digital
thermometer to check the surrounding temperature
is assembled along with home sensor in the frame
of assembly CR. After each line is inked, it re a d s
the surrounding temperature and heats substrate
heater in the ink cartridge during the accelerating
time of CR to keep the viscosity of ink in the specified lere l .
6-1-5-4. HEAD DRIVING TIMING
C o n t rol signal from MFPc o n t roller (KS32C6200:U16)
enters the head driver (U26, U27, U32, U33) and it
becomes the level to be able to drive the head nozzles
( + 11.75V). It is depicted in the following diagram.
Fig.6-1-16. HEAD DRIVING TIMING DIAGRAM
6-18Samsung Electronics
Page 50
Fig.6-1-17. TIMING DIAGRAM FOR EACH NOZZLE
Samsung Electronics6-19
Page 51
6-1-5-5. INK CARTRIDGE
• PIN A R R AY OF MONO INK CART R I D G E
T h e re are 208 heater chips in mono ink cartridge.
• PIN A R R AY OF COLOR INK CART R I D G E
T h e re are 192 heater chips in mono ink cartridge. One cartridge has 64 Cyan, 64 Magenta, 64 Yellow heaters
and (64 x 3 colors) 192 nozzles.
This product use 3 stepper motors, i.e. CR(Cartridge
Return) motor and LF(Line Feed) motor, TX
( Transmission) motor.
CR motor moves left and right all-in-one carriage of
inkjet head and shuttle scanner. It helps the printer
print accurately on the paper. LF motor is driven to
feed and eject paper for printing and to feed and eject
documents to read for scanning. Bi-polar CR motor is
c o n t rolled half step with maximum 24ips(inch/sec),
while LF motor half step and
quarter step at maximum 6ips.
C R _ R E F
HLL4 9 0Mono LQ is being driven
C R I A 1C R I A 0
( C R I B 1 )( C R I B 0 )
C U R R E N T ( m A )O P E R AT I O NR E M A R K
6-1-6-2. CR (CARRIAGE RETURN) MOTOR
DRIVING CIRCUIT
CR motor moves the carriage left and right when ink
cartridge prints something on paper.
- Motor Type : Stepper motor, bi-polar
- Driving Voltage : +30V
- Winding Resistance : 6Ω ± 10%
- Driving IC : TEA3718DP × 2
LLL6 7 0Color draft is being driven
LLL6 7 0Mono draft is being driven
XHH0No current
As shown in the above table, current in each mode is
adjusted by voltage of driver(U25, U28) CRV R E F
input. If the output of CR_REF signal controlled by
M F P c o n t roller(U16) is “low”, TR(Q12) will be turned
o ff and the voltage put in to CRVREF of
driver (U25, U28) with +5V divided will go up
(+4.5V).
It becomes the standard of the driver, resulting in
high current. If CR_REF output is “high”, TR(Q12)
will be turned on and the voltage put in to CRV R E F
will go down (+3.0V), resulting in low current in the
m o t o r.
6-22Samsung Electronics
Page 54
6-1-6-3. LF (LINE FEED) MOTOR DRIVING CIRCUIT
LF motor is driven to feed and eject documents and paper.
- Motor Type: stepper motor, bi-polar
- Driving Voltage : +30V
- Winding Resistance : 12Ω ± 10%
- Driving IC : PBL3717A × 2
L F I A 1L F I A 0C U R R E N T ( m A )O P E R AT I O NR E M A R K
TX Motor is driven at maximum 1200pps when feeding or ejecting sheets.
- Motor Type: stepper motor
- Driving Voltage : +30V
- Winding Resistance : 4.6Ω ± 10%
- Step Degree : 7.5 deg/step
- Driving IC : PBL3717A× 2
T X I A 1T X I A 0C U R R E N T ( m A )O P E R AT I O NR E M A R K
LL6 7 0Quick Scan/Fine/Super Fine
HL2 2 1S t a n d b y
HH0I d l e
Driving speed for each mode
MODE PHASE S P E E DR E M A R K
Quick Scan2–2 phase1 2 0 0 p p s
F i n e1–2 phase4 0 0 p p s
Super Fine2–2 phase4 0 0 p p s
Samsung Electronics6-23
Page 55
6-1-7 FAX Transceiver
6-1-7-1. GENERAL
This circuit processes transmission signals of modem
and between LIU and modem.
This circuit is added only to SmartJet 2000,
S F - 4 3 0 0 C .
6-1-7-2. MODEM (U15)
K S 1 6 117 is a single chip fax modem. It has functions
of DTMF detection and DTMF signal production
as well as functions of modem. TX OUT is
transmission output port and RX IN is received data
input port. /POR signal controlled by MFP
c o n t roller (U16:KS32C6200) can initialize
modem(/RST_OUT) without turning off the system.
D0 - D7 are 8-bit data buses. RS0 - RS4 signals to
select the register in modem decide the mode. /CS is
a
signal to select modem chips. /RD and /WR signals
c o n t rol READ and WRITE re s p e c t i v e l y. /IRQ is a signal for modem interrupt.
Transmission speed of KS16117 is supported up to
1 4 . 4 k .
6-1-7-3. TRANSMITTER
This circuit processes transmission output, analog
signal of modem(KS16117).
Output signal in each mode goes out of modem
( T X O U T:U15-44). After D/Asignals are smoothed
and filtered through active filter (U12-2), they are
b u ff e red under OPAMP(U12-6) and put out to LINE
t h rough LIU boar d .
6-1-7-4. RECEIVER
In the receiving mode, analog signals coming in
t h rough LIU board are amplified at OPA M P
(U13-6), and then transmitted to input terminal of
modem (RXIN:U15-45) through smoothing filter
( U 1 3 - 2 ) .
M O D E M
K S 1 6 11 7
( U 1 5 )
U 1 2
U 1 3
Fig.6-1-18. FAX TRANSCEIVER
FAX T R A N S M I S S I O N
LIU
FAX RECEPTION
6-24Samsung Electronics
Page 56
6-2. OPE PBA
6-2-1. SUMMARY
OPE Board is separated functionally from the main
b o a rd and operated by the micom(Z8601) in the
b o a rd. OPE and the main use UART (universal async h ronous receiver/transmitter) channel to exchange
information. OPE reset can be controlled by the main.
OPE micom controls key-scanning and LCD and
LED display, detects documents and
senses SCAN position. If there occurs an event in
OPE (such as key touch and sensor level change), it
sends specific codes to the main to respond to the situation and the main analyzes these codes and operates the system. For example, if the main is to display
messages in OPE, the main transmits data thro u g h
U A RT line to OPE according to the
designated format and OPE displays this on LCD,
LED. OPE’s sensing is also transmitted to the main
t h rough UART line and then the main drives
necessary operation.
6-2-2 OPE Circuit
OPE PBAconsists of U1 (MICOM, Z8601), LCD, key
matrix, LED indicators, SCAN position sensor and
the document detect sensor. Refer to OPE Schematic
Diagram and Wiring Diagram sections of this manua l .
• Signals from the key matrix are delivered to
U 1 X / Y input pin group (P1-x).
• U1 pin 4 (TXD ATA) is the UART code sent to
MAIN PBA.
• Display from the controller is received at U1 pin 5
(RX DAT A ) .
• LCD drive signals are sent from U1 P2-x pin gro u p ,
P3-4~P3-6 pins.
• Machine status LED drive signals are sent from U1
P0-x pin gro u p .
• Document detect sensor output is received at U1
pin 33 (P3-3).
• Scan position sensor output is received at U1 pin 43
( P 3 - 1 ) .
Fig.6-2-1. OPE BLOCK DIAGRAM
Samsung Electronics6-25
Page 57
6-3 LIU PBA
6-3-1 Summary
LIU(Line Interface Unit) circuit added only to
SF-4500, SF-4500C is controlled by the main circuit.
It monitors telephone line and helps interface
between the system and the telephone line. It uses
1-LIU(STI9510) to control the whole LIU,
MODEM/LINE INTERFACE, RING SIGNAL
D E T E C TOR, DIALER, LINE CURRENT
D E T E C TOR, and SERIALI N T E R FA C E .
6-3-2 Modem/Line Interface
This is the path through which transmitted and
received data of modem is put in and out.
• CML1 Relay: It divides telephone line into
external telephone and fax.
• U3-3 TIT(Transformer Input from T r a n s f o r m e r ) :
This single ended input receives image signals
f rom modem through transformer T2 and
transmits them on telephone line.
• U3-40 ROT(Receive Output Transformer): This output transformer receives signals on telephone line
and delivers them to modem through
transformer T1. It has AC impedance of 10Kohm or
o v e r.
• AC impedance: Normal operation range of
U3(STI9510) is from 15mAto 100mA. DC
characteristics depend on the voltage of U3-37
LI(Line Input) terminal and the voltage of
resistance R48 between U3-37 LI(Line Input)
terminal and U3-39 LS terminal.
6-3-3 Ring Signal Detector
• U3-28(MO) terminals are ring signal output
terminals. Q4 and Q5 put out ring signals and
drive Piezzo. It has only the functions related to
ring detection such as driving the photocoupler of
U4 and delivering ring signals to MFP
c o n t roller of the main.
6-3-4 Dialer
6-3-4-1. MF DIAL
• Default mode it is set in DP. You can change it to
MF mode by control of MFP c o n t ro l l e r.
• MF signal can be measured at (tone level of low
g roup: typical - 14dBm) U3-4 MFO(DTMF
Generator Output). The signal is adjustable by R40,
R41 and C29. The adjusted signal enters U3-9 MFI
(DTMF Amplifier Input) and is amplified to be
transmitted on telephone line.
• U3-39 LS(Line Current Sense Input) terminals
show the final signals transmitted to telephone
l i n e .
6-3-4-2. DP DIAL
• If U3-2(DMS) is made Vcc by R42, it is set at 33:67
D P signal. If it is made Vss by R43, it is set at DP
signal. This product is set at DP s i g n a l .
• D P signal is made by U3-27(DPn) terminals. This
signal turns on/off Q1. The signal made at that
time turns on/off Q2, which interrupts DC
c u r rent on telephone line and puts out pulse
signal on telephone line.
• U3-35 CS terminals : It makes Make Resistance by
shorting telephone line with Vss during Make period of DPd i a l .
6-3-5 Line Current Detector
• When CML1 relay connects telephone line, U3
(STI9510) of LIU board and MFP c o n t roller of the
main board (U16) start communication thro u g h
U A RT. U3 of LIU board sends signal that includes
information of line current value, whenever it
receives orders or data from U16 of the main board .
6-26Samsung Electronics
Page 58
6-3-6 Serial Interface
• This part does serial communication with MFP
c o n t roller of the main board (MAIN PBA:U16) that
c o n t rols the whole system. It controls LIU by giving and taking all control orders and line
s t a t u s .
• U 3 - 11 RxD : Schmitt Trigger input, Receiving
t e r m i n a l .
• U3-29 TxD : Open Drain output terminal
• S t a n d a rd UART communication
- Baud Rate : 9600bps
- Start, Stop bit : 1bit each
- Data bits : 8 bit
- Parity bit : none
6-3-7 MAJOR FUNCTIONS OF PARTS
1) U3 : S T I 9 5 1 0
- Key part of LIU board. Speech Network,
D i a l e r, Ringer and UART are built in one IC
p a c k a g e .
2) U5 : PC817
- Photo coupler. It enables UART of
U3(STI9510) to receive control signal or
dialing information from MFP c o n t roller of
the main board (U15).
- Insulation Detween prinary and secondany
c i rcuit part.
3) U6 : PC817
- Photo coupler. It enables UART ( U 3 - 2 9 : T x D )
of U3(STI9510) to deliver telephone line
status or response signal about control
signal or dialing information from LIU MFP
c o n t roller of the main board (U15).
- Insulation Detween prinary and secondany
c i rcuit part.
4) U4 : PC817
- It senses and delivers ring signal to the main
b o a rd .
- Insulation Detween prinary and secondany
c i rcuit part.
5) U2 : PC814
- It senses hook-off (Line connection) of the
external telephone and delivers it to the
main board .
- Insulation Detween prinary and secondany
c i rcuit part.
6) BD1 : BRIDGE DIODE
- R e g a rdless of the polarity of DC power
f rom telephone line, the voltage put out on
Pin.1 has always + polarity against pin
Pin.2. So DC loop forms always in the same
d i rection re g a rdless of the polarity of the
telephone line.
7) T2,T3 : T R A N S F O R M E R
- It delivers signals from the telephone line
to modem or signals from modem to the
t e l e p h o n e
l i n e .
- Insulation Detween prinary and
secondany circuit part.
Samsung Electronics6-27
Page 59
6-4 SMPS
6-4-1 Block Diagram of Power Circuit
Refer to the following block diagram.
POWER SUPPLY
6-4-2. Specifications of Power Circuit
6-4-2-1. INPUT CONDITIONS
120V220VFree Voltage
1 Input Rated Voltage A C 1 2 0 Vac (a) A C 2 2 0 – 2 4 0 Vac (a) A C 11 0 – 2 4 0 Vac (a)
2 Input Voltage Turning Range A C 8 5 – 1 3 5 Vac (b) A C 1 8 0 – 2 7 0 Vac (b) A C 8 5 – 2 7 0 Vac (b)
3 Rated Grequency 60Hz 50–60Hz 5 0 – 6 0 H z
4 Frequency Range 57–63Hz 47–63Hz 47–63Hz
5 Input Current 0.5Arms 0.3Arms 0 . 5 A r m s
This product is equipped with a thre e - w i re
g rounding-type power inlet. Insulation is class 1.
When a power device part breaks down or some
t rouble in this circuit causes a short, excess curr e n t
runs through a fuse and blows it to protect power
devices and the system from excess current and
p revent a fire .
Input filter of power input terminal removes line
noise flown in from outside and reduces noise which
is made in power circuit and logic part and conducted or radiated through power cord s .
AC input voltage is rectified by bridge diode of full
wave re c t i f i e r, is converted to DC voltage by smoothing circuit, and switches the power device of this
voltage.
As switching is in RCC(Ringing Choke Converter)
mode, switching frequency changes from about
50KHz to 100KHz.
PWM(Pulse Width Modulation) Control Circ u i t
adjusts the duty of the switching device by sensing
the change of output voltage, and protects this
p roduct from excess current by receiving signals
f rom excess current detecting circ u i t .
6-4-3-2 DRIVING CIRCUIT (START-UP CIRCUIT)
If you insert a power plug into AC outlet, full-wave
rectified DC output voltage is generated at input
e l e c t rolysis condenser and supplied to the gate of a
switching device through driving resistance. This
voltage drives the switching device. Once it is
driven, it continues to switch via PWM control
c i rcuit with power supplied by auxiliary coil Nb.
6-4-3-3 SWITCHING CIRCUIT
(VOLTAGE STABILIZATION)
11.75V of 2nd voltage is detected by voltage detector
and feeds back through photo coupler to 1st PWM
C o n t rol Circuit signals compared by error amplifier.
PWM Control Circuit controls the gate of power transistor according to the feedback voltage so as to supply load with stable output voltage.
Samsung Electronics6-29
Page 61
6-4-3-4 OCP CIRCUIT
(OVER CURRENT PROTECTIVE CIRCUIT)
If a short in secondary load terminal or a short inside
power device causes excess current, power consump-
tion increases. Then it increases current of power
t r a n s i s t o r.
The current of power transistor increases linearly
when it is on. This current is detected by sensing
resistance and is impressed to excess voltage
p rotective circuit of PWM control circuit through RC
integration circuit where over current protection is
built in.
If this voltage becomes bigger than Vbe of excess
c u r rent control transistor, the potential of power tran-
sistor gate falls immediately and it stops driving
power transistor to protect it from excess current.
6-4-3-5 O V P CIRCUIT
(OVER VOLTAGE PROTECTIVE CIRCUIT)
If the main power of power device 11.75V incre a s e s
a b n o r m a l l y, this excess voltage is detected by OVP
detecting circuit and 11.75V output terminal shifts to
a state similar to
a short.
If 11.75V output terminal shorts, over current runs on
over current detecting terminal and OCP c i rc u i t
operates to prevent a fire in power device.
6-4-3-6 +5V OUTPUT TERMINAL
S q u a re wave voltage generated by Ns1 produces DC
voltage rectified and smoothed by half-wave re c t i f i e r.
This voltage put in to a thre e - w i re regulator generates stable DC power of +5V.
6-4-3-7 +30V OUTPUT TERMINAL
S q u a re wave voltage generated by Ns2 is r e c t i f i e d
and smoothed by half-wave rectifier and supplies
load with output voltage without separate
regulation.
6-4-3-8 +11.75V OUTPUT TERMINAL
S q u a re wave voltage generated by Ns3 is r e c t i f i e d
and smoothed by half-wave re c t i f i e r, and then detected by voltage detector. Signals compared by erro r
amplifier are fed back to primary PWM
c o n t rol circuit through photo coupler.
PWM control circuit controls the voltage of power
transistor gate driver according to the voltage to supply load with stable output voltage.
6-5. Others
6-5-1. Paper Sensing Circuit
This circuit senses whether there is paper or not,
using photo interru p t e r. If there is no paper, the lever
will cover its sensor and output “/P_EXIT”
will become “High”. If there is paper, the lever will
be lifted and output “/P_EXIT” will become “Low”.
6-30Samsung Electronics
Page 62
6-5-2. Home Sensing Circuit
This circuit senses whether carriage is at home or
not. This function is carried out when the system is
turned on or when the head is capped. Photo
i n t e r rupter is used as a home detecting sensor,
attached to the back of the carriage. When the
carriage moves left and right, output is “high” if the
frame rib covers the center of the sensor and “low” if
it is out of home.
6-5-3 Temp IC Driving Circuit
T E M P IC(DC1621S, Thermometer) mounted on the
sensor card on the back of the carriage is used to re a d
the temperature around ink cartridge.
This IC converts the temperature around IC
package into digital and sends the temperature data
to serial to make it sense the temperature
a round the head. It senses temperature so that the
t e m p e r a t u re of the head can be the optimum when
you print something. The above IC sends data serially using signal lines(THM_DATA, THM_CLK).
Samsung Electronics6-31
Page 63
Samsung Electronics8-1
8. Troubleshooting
8-1 SCANNER
PROBLEM ITEMS TO BE CHECKEDHOW TO SOLVE
White Copy
Black Copy
Defective image
quality
• Check shading profile.
• Check white Ref. value and black
Ref. value.
• Check CIS signal input level.
• Check shading profile.
• Check if CIS LED is on/off.
• Check white ref.value and black
Ref.value.
• Check CIS signal input level.
• Check shading profile.
• Check printing quality.
• Remake shading profile in the tech mode.
• Replace U17 if it is defective.
(white Ref. =3.0V. black Ref=1.4V)
• Check if it is 3.0V when operating and
1.5V when idle. If defective, replace CIS.
• Remake shading profile in the tech mode.
• Check if CIS harness is pluged.
• If defective, replace U17.
(white Ref.=3.0V. black Ref=1.4V)
• Check if it is 3.0V when operating and
1.5V when idle. If defective, replace CIS.
• Remake shading profile.
• Refer to printing quality.
8-1-1. COPY
PROBLEM ITEMS TO BE CHECKEDHOW TO SOLVE
Scanning error
Defective image
quality
• Check if printer cable is installed.
• Check if printer cable is appropriate.
• Check how TWAIN driver is installed.
• Check parallel port I/P part.
➀
Check the early state of J2 print
signals.: #1, 10-14, 31, 32, 36
• Reboot the system after TWAIN driver is
installed again.
• Replace the main PBA.
Refer to ‘1.COPY’.
8-1-2. PC-SCAN
Page 64
Samsung Electronics8-2
8-1-4 Setting-up System
8-1-4-1 Options
8-1-3 Service Mode
8-1-3-1 HOW TO ENTER SERVICE MODE
In service (tech) mode, the technician can check the
machine and perform various test to isolate the cause
of a malfunction.
To enter the service (tech) mode, press MENU, #, 1,9, 3, 4 in sequence, and the LCD briefly displays
‘TECH’, the machine has entered service (tech) mode.
While in service (tech) mode, the machine still
performs all normal operations. To return to normal
user mode, press MENU, #, 1, 9, 3, 4 in sequence
again, or turn the power off, then on by unplugging
and plugging the power cord.
Options changed while in service mode do not
remain changed unless you clear the machine’s
memeory.
Options in User Mode Item Default Status
RINGER VOLUME [LOW/MEDIUM/HIGH] HIGH
HOME SETTING
E RESOLUTION [STANDARD/FINE/SUPER FINE] FINE
E CONTRAST[NORMAL/DARKEN/LIGHTEM/PHOTO] MORMAL
Options in Tech Mode Item Default Status
MODEM TESTFSK/2400/4800/7200/
9600/12000/14400 bps
DTMF TEST1100/1650/1850/2100Hz
ADJUST SCAN LED ON TIME
RINGER VOLUME [LOW/MEDIUM/HIGH] HIGH
HOME SETTING
E RESOLUTION [STANDARD/FINE/SUPER FINE]FINE
E CONTRAST[NORMAL/DARKEN/LIGHTEN/PHOTO] NORMAL
PROGRAM DOWNLOAD
Page 65
Samsung Electronics8-3
8-1-4-2 OPTIONS IN SYSTEM SETUP
MODEM TEST
The modem will send various transmit signals on the
telephone line you can check the fallowing:
• FSK tect
• Tones : 1100Hz, 1650Hz, 1850Hz, 2100Hz
• G3 training : 14400, 12000, 9600, 7200, 4800, 2400bpi
DTMF
DTMF (Dual Tone Multiple Frequency) signal can be
checked.
• 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #
ADJUST SCAN LED ON TIME
• It is used to adjust the anount of light of CIS. It is
already set at CIS LED ON TIME to get optimum
quality.
ADJUST SEQUENCES
1. Load All White Document in scanner Unit
2. Enter ‘Tech Mode’
3. Press MENU→ 04(SYSTEM SETUP)
→ ✔ → ✔
4. LCD will display ‘ADJUST SCAN LED ON TIME?’
5. Press ‘START’ then LCD will display ‘SHADING..’
6. After scanning, Shading waveform will be printed
out.
7. Press ‘STOP’
8. Turn OFF system and Turn ON
WARNNING!
Shading profile MUST be made after
Downloading a new Firmware. If not, system
will not work properly.
Fig.8-1-4-2-1 Mono Shading Waveform
Fig.8-1-4-2-2 Color Shading Waveform
Page 66
Samsung Electronics8-4
RINGER VOLUME
•Refer to User ’s Guide.
HOME SETTING
•Refer to User ’s Guide.
PROGRAM DOWNLOAD
• It is used to download ROM files into the machine
using its flash ROM. If you download CIS or the
main board again, you should adjust SCAN LED
ON TIME.
• Download Sequences:
➀
Press the ‘START’ key in ‘PROGRAM DOWNLOAD?’ then the display shows ‘ARE YOU
SURE? 1. YES 2. NO’
➁
Press the ‘I’ key
➂
Download ROM files from a PC that can be connected with Pallel cable (IEEE 1284).
8-1-5 Changing System data
8-1-5-1 Selectable System data
System data in User Mode Item Default Status
FAX PAPER SIZE [LETTER/A4/LEGAL]A4
MESSAGE CONFIRMATION REPORT[ON/OFF/ERROR]ON-ERROR
AUTO TX/RX REPORT[ON/OFF]OFF
REMOTE RCV MF CODE[0-9]*9*
DIAL MODE[TONE/PLUSE]TONE
ECM MODE [ON/OFF]ON
DIRECT COPY[ON/OFF]OFF
AUTO REDUCTION[ON/OFF]ON
E VERTICAL REDUCTION ONLY[ON/OFF]OFF
DISCARD SIZE[0-30]8mm
RETRY INTERVAL[1-7]3minutes
RETRY COUNT[0-2]2
AUTO RECEIVE ON RING COUNT[1-7]2
FORCED MEMORY TX[ON/OFF]OFF
RECEIVE TERMINAL ID.[ON/OFF]OFF
CONTINUOUS POLL REPORT[ON/OFF]OFF
FAX PRINT QUALITY[LQ/DRAFT]LQ
Select baud rate of 14400, 12000, 9600, 7200, 4800, or
2400 bps. The lower the baud rate, the larger the
acceptable error rate. T30 protocol has a fixed speed
of 300 bps in the protocol mode. When the TX speed
is set to 14400 or 12000 bps, the RX speed will be
either V.17 or V.33. When the TX speed is set to 9600
or 7200 bps, the RX speed will be either V.29 or V.27
ter. When the TX speed is set to 4800 or 2400 bps, the
RX speed will be V.27 ter.
FAX TX LEVEL
Default = –12 dBm
FCC requires that the transmission level be less than
–9 dBm. From –9 dBm to –15 dBm is acceptable. You
can set the transmission level between 0 and –15
dBm in 1dBm steps using the control panel keypad.
Accuracy is +0/–3 dBm.
FAX RX LEVEL
Default = –43 dBm
Reception level may be too low due to cable losses. If
set to –43 dBm, reception sensitivity will be betWeen
0 and –43 dBm.
FLASH TIME
Default = 100 mseconds
Choose flash time 100/280/600 milliseconds.
PAUSE TIME
Default = 4.0 seconds
This sets the length of the pause time from 1 through
9 seconds, when the pause button is pressed.
8-1-5-3 CHANGING SYSTEM DATA
Press MENU and one-touch button 01 system data.
Then press 1 to choose ‘Tech’. Press ▲ or
▼
repeatedly to select the desired system data.
When the desired system data appears, enter the corresponding information to change the status of the
selected function. Press STOP to return to the date
and time display.
Page 68
Samsung Electronics8-6
8-2 FAX/TELEPHONE Precautions
PROBLEM ITEMS TO BE CHECKEDHOW TO SOLVE
TEL LINE CANNOT
BE ENGAGED (NO
DIAL TONE)
Cannot MF dial.
MF dial is possible
but not DP dial.
Defective fax
transmission
Defective automatic
fax reception
• When you pick up the handset:
➀
Check line cord connection and
P3(LIU) connection.
➁
Check hook switch of H/B Cradle
and D2(LIU) connection.
➂
Check the circuit around R2, Q1
and Q2 of LIU PBA.
➃
Can’t you hear dial tone though the
line is engaged?
• When you press “OHD” key:
➀
Check line cord connection.
➁
Check U7(main PBA), main LIU
harness, and P1(LIU PBA).
➂
Check relaying operation of LIU
PBA : Is the control signal of
U18-49(main) high?
• Check U7(main PBA), main-LIU
harness, and P1(LIU PBA)
• Check signals of U16-122, 123.
• Check DP control signal of U3-27 of
LIU PBA and the circuit around R2, Q1
and Q2.
• Check connection of R43 of LIU PBA.
• Check U7(main PBA), main LIU
harness, and P1(LIU PBA).
• aIs the external phone hooked off?
b
Is the output of U2-4(LIU PBA) low?
• Check ‘hook off’. : Refer to ‘TEL LINE
CANNOT BE ENGAGED’.
• Check the control signals of U15-122,
123.
• Check transmission path.: Check
output of U15-44(main PBA) and input
of U3-3(LIU PBA).
• Check reception path.: Check output of
U3-40(LIU PBA) and input of
U15-45(main PBA).
• Is the ring checked?
Check ring pattern at U18-84(main
PBA).
• Refer to ‘Defective Transmission’.
• ➀Insert it correctly into the connection jack
called “line”.
➁
Replace defective parts.
➂
Replace LIU PBA.
➃
Replace the handset.
• ➀Insert it correctly into the connection jack
called “line”.
➁
Replace defective parts.
➂
Replace main PBA IF the control signal of
U18-49(main) is low. Replace LIU PBAif
high but phone line cannot be connected.
• Replace defective parts.
• Replace main PBA if the signals of U16-
122(LIU_TXD) are abnormal. Replace LIU
PBA if the signals of U16-123(LIU_RXD).
• Replace LIU PBA.
• Replace LIU PBA.
• Replace defective parts.
• aHook on the external phone correctly.
b
Replace LIU PBA if low.
• Refer to ‘TEL LINE CANNOT BE
ENGAGED’.
• Replace main PBA if the signals of
U15-122 (LIU_TXD) are abnormal.
Replace LIU PBA if the signals of
U15-123 (LIU_RXD) are abnormal.
• Replace main PBA, if abnormal.
• Replace LIU PBA if the output of
U3-40 (LIU PBA) is not confirmed.
Check the circuit around U6 (main PBA)
if the input of U21-45 (main PBA) is not
confirmed though the output of
U3-40 (LIU PBA) is confirmed.
• Replace LIU PBA if it cannot be checked.
• Refer to ‘Defective Transmission’.
Page 69
Samsung Electronics8-7
8-3 Paper Feed
PROBLEM ITEMS TO BE CHECKEDHOW TO SOLVE
ASF feeds paper
but paper is not
supplied to the
engine.
ASF cannot feed
paper.
Can’t feed
envelopes
Tilted Printing
• Check if actuator feed operates
perfectly.
• Check if paper sensor is normal.
• Check if stopper clutch operates
perfectly.
• Check if too much paper has been
supplied.
• Check if pickup roller rubber of the
ASF is worn out.
• Check the location of the envelope
guide of ASF.
• Check if paper guide of the ASF is
adjusted to the size of paper.
• Replace actuator-feed, spring, or other
defective parts.
• Replace the paper sensor.
• Replace stopper clutch assembly.
• Supply appropriate amount of paper(130
sheets of normal copying paper).
• Replace pickup roller rubber.
• Open the envelope guide when you feed
envelopes.
• Adjust paper guide to the size of paper.
* ASF: Automatic Sheet Feeder
Page 70
Samsung Electronics8-8
8-4. Printing Quality
8-4-1 White lines on letters or graphics.
■
Cause
If nozzles in print head has a problem, white lines
are marked on the print.
‘Self-Test printing’ will let you know if nozzles have
fallen problems.
■
Solution
1) Run ‘print control panel’ to “clean cartridge” and
check if nozzles have been blocked.
2) Wipe with soft cloth the contact surfaces of ink cartridge and carriage, and check if nozzles have been
cleaned properly.
3) Separate ink cartridge from carriage and combine
them. Repeat it about 5 to 6 times and check if connection is proper.
4) Replace ink cartridge and check whether there’s a
problem with thehead.
5) Check if head cable is inserted well into the main
circuit board and then check if nozzles have problems.
6) Check if head cable is broken or torn and then
check if nozzles have problems.
7) Replace the main circuit board with a new one and
check if nozzles have problems.
If this line is broken, it confirms that
nozzles have problems.
Page 71
Samsung Electronics8-9
8-4-2 When Vertical lines are printed
crookedly
■
Cause : Vertical lines are printed crookedly if you
do not “align Vertical lines” on the printer.
■
Solution
1) Run print control panel to “align Vertical lines”,
and
2) Select the best one of the above samples and enter
the number.
3) This function to align Vertical lines is available
both for mono and color cartridges.
8-4-3 When ink spreads on transparent
film
■
Cause : You selected a wrong medium on the
driver or you did not use transparent film
designated for inkjet.
■
Solution
1) Use only transparent film designated for inkjet
when you print on transparent film by an inkjet
printer.
2) Run “Windows driver” and select “transparent
film” as the kind of paper if you print on
Windows.
12 3 45
Page 72
Samsung Electronics8-10
8-5. Defective Operation
PROBLEM ITEMS TO BE CHECKEDHOW TO SOLVE
LCD does not
display
(operation panel)
Cannot enter by
keys(operation
panel)
LF MOTOR does
not operate.
CR MOTOR does
not operate.
TX MOTOR does
not operate.
Paper Jam
• Powered up?
• VCC(+5v) M+4.5V?
• Is the level of U16-130(_POR) high
(more than +4V)?
• Check Main to OPE harness and
J3(main).
• Is the level of U16-153 (_RST_OUT)
high (more than +4V)?
• Is the level of U18-31 (_OPE_RST)
high (more than +4V)?
• Check control signals of U16-124,
125(OPE_TXD, OPE_RXD).
• Refer to 4-7 of “LCD does not display”.
• Check OPE key contacts.
• Check the control signals of U16141~145.
• Check input signals and driving output
of U1 and U2.
• Check the control signals of U1631~36.
• Check input signals and driving output
of U25 and U28.
• Check the operation of the document
sensor of OPE PBA.
• Check the operation of TX Motor.
➀
Check the control signals of U18105~110.
➁
Check input signals and driving output of U23 and U24.
• Check sheet feeder and ejector.
• Check the operation of LF motor.
• Check paper exit sensor.
• Check power.(SMPS)
a
Check if the cord is connected.
b
Check each power channel. (+5V,
+11.75V, +30V)
• Check power harness.
• Check the circuit around U103.
• Replace defective parts.
• Check the state of data bus of U16.:
Replace the main PBA.
• Check the circuit around U18.
• If signals of OPE_TXD are defective,
replace the main PBA. If signals of
OPE_RXD is defective, replace OPE
PBA.(Refer to circuit explanation.
• Refer to 4-7 of “LCD does not display”.
• Replace OPE.
• If control signals are not made when the
other functions are normal, replace the
main PBA.
• If driving output is defective when input
signals are normal, replace U1 and U2.
• If control signals are not made when the
other functions are normal, replace the
main PBA.
• If driving output is defective when input
signals are normal, replace U25 and
U28.
• If defective, replace the sensor.
• ➀If control signals are not made when
the other functions are normal, replace
the main PBA
➁
If driving output is defective when the
other functions are normal, replace
U23 and U24.
• Get rid of jammed paper.
• Refer to “LF motor does not operate.”
• If the sensor senses paper exit when it
operates normally, replace the main
PBA.
Page 73
Samsung Electronics8-11
PROBLEM ITEMS TO BE CHECKEDHOW TO SOLVE
Document Jam
No Paper
No Document
No Cartridge
Bad Cartridge
Ink low
Can’t PRINT
• Check document feeder.
• Check the operation of TX motor.
➀
Check the control signals of U18105~110.
➁
Check the input signals and driving
output of U23 and U24.
• Paper Empty?
• U18-48 is HIGH? (+4V or over)
• No document?
• Check the document sensor of OPE
PBA.
• Check if ink cartridge is installed.
• Check contacted part of the head.
• Check head checking circuit and
driver.: Check U16-8,9,10,128,154,156,
U18-103 control signals and head data.
• Check if ink cartridge is defective.
• Check the output level of U22-1.
• Check the amount of ink.
• Check centronics cable connection.
• Check what type of print driver has
been installed.
• Check I/F part of parallel port.
➀
Check the initial state of J2 print
control signal of CON8.: No.1,
10 - 14, 31, 32, 36
➁
Check input and output signal of U4.
➂
Check input and output signals of
U16-43 ~ 51 and U16-53 ~ 61.
• Remove jammed documents and insert it
again.
• ➀If control signals are not made when
other functions are normal, replace
the main PBA
➁
If driving output is defective when
input signals are normal, replace U23
and U24.
• Feed paper.
• If high, replace the paper empty sensor.
If low, replace the main PBA.
• Insert documents.
• If high, replace the document sensor. If
low, replace the OPE PBA.
• Insert ink cartridge.
• Clean it.
• Replace the main PBA.
• Replace ink cartridge.
• If low, replace the main PBA.
• Replace ink cartridge using ‘cartridge’
key.
• Connect it correctly.
• Install the print driver again and reboot
the system.
40Gear-17/27JG66-40037A1
C2Ring-C (ID3)6044-0001592
S1Screw-Tapping, M3 u L86002-00017513v
S2Screw-Tapping, M2.5 u L66003-0001931v
S3Screw-Taptite, M3 u L66003-0002692v
S1Screw-Taptite, M3 u L66003-0001262v
S2Screw-Taptite, M3 u L66003-0001793v
S3Screw-Taptite, M36002-0010163v
S4Screw-Machine, M3 u L66001-0001312v
S5Screw-Taptite, M36003-0002692v
S6Screw-Taptite, M2.5 u L66003-0001931v