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Precautions
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Samsung Electronics
1. Precautions
The cautions in the below are items needed to keep in mind when maintaining and servicing.
Please read carefully and keep the contents in mind to prevent accidents while servicing and to prevent that the machine
gets damage.
1.1 Warning for safety.
(1) Request the service by qualified service person.
The service for this machine must be performed by a service person who took the additional education of this field.
It is dangerous if unqualified service person or user tries to fix the machine.
(2) Do not rebuild it discretionary.
Do not attach or change pats discretionary. Do not dissemble, fix, and rebuilt it. If do, printer will abnormally work and
electric shock or a fire can be occurred.
1.2 Caution for safety
Caution 1>> Precaution related noxious material
There is a possibility to get harm from noxious material if you ignore the below information.
(1) Do not touch the damaged LCD. This FAX has LCD in control panel. Noxious liquid to human
body exists in the LCD. If it is got into mouth, immediately see a doctor. If it is got into eyes or
on skin, immediately wash off over 15 minutes with flowing water and see a doctor.
Caution 2>>Precaution related electric shock or fire
It is possible to get electric shock or burn by fire if you don't fallow the instructions of the manual.
(1) Use exact voltage. Please do use an exact voltage and wall socket. If not, a fire or an electric
leakage can be caused.
(2) Use authorized power code. Do use the power code supplied with FAX. A fire can be occurred
when over current flows in the power code.
(3) Do not insert many codes in an outlet. If do, a fire can be occurred due to flow over current in
an outlet.
(4) Do not put water or extraneous matter in the FAX. Please do not put water, other liquid, pin,
clip, etc. It can cause a fire, electric shock, or malfunction. If it is happened, turn off the power
and remove the power plug from outlet immediately.
(5) Do not touch the power plug with wet hand. When servicing, do remove the power plug from
outlet. And do not insert or take off it with wet hand. Electric shock can be occurred.
(6) Caution when inserting or taking off the power plug. The power plug has to be inserted com-
pletely. If not, a fire can be caused due to poor contact.
When taking off the power plug, do grip the plug and take it off. If grip the line and pull over, it
could be damaged. Afire or electric shock could cause.
(7) Management of power code. Do not bend, twist, or bind it and place other materials on it. Also,
do not fix it with staples. If the power code gets damage, a fire or electric shock can be caused.
A damaged power code must be replaced immediately. Do not repair the damaged part and
reuse it. Arepaired part with plastic tape can be occurred a fire or electric shock. Do not spread
chemicals on the power code. Do not spread insecticide on the power code. A fire or electric
shock can be occurred due to thinner(weak) cover of the power code.
(8) Check whether the power outlet and the power plug are damaged, pressed, chopped, or blaz-
ing fire or not. When such inferiorities are found, repair it immediately. Do not make it pressed or
chopped when moving the machine.
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Precautions
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Samsung Electronics
(9) Caution when thundering, and being flash of lightening. It causes a fire or electric shock. Take
the power plug off when thundering. Do not touch cable and device when thundering and being
flash of lightening.
(10) Do avoid the place where is moisture or has dust.
Do not install the printer in where have lots of dust or around humidifier. Afire can be occurred.
A plug part need to clean well with dried fabric to remove dust. If water drops are dripped on
the place covered with dust, a fire can be occurred.
(11) Avoid direct sunlight. Do not install the printer near to window where directly contacts to the
sunlight. If the machine contacts sunlight long time, the machine cannot work properly
because inner temperature of the machine is getting higher. Afire can be caused.
(12) Turn off the power and take off the plug when a smoke, strange smell, or sound from the
machine. If you keep using it, a fire can be occurred.
(13) Do not insert steel or metal piece inside/outside of the machine. Do not put steel or metal
piece into a ventilator. An electric shock could be happened.
Caution 3>>Precaution related handling the machine.
If you ignore this information, you could get harm and machine could be damaged.
(1) Do not install it on the different levels, or slanted floor.
Please confirm whether it is balanced or not after installation. If it is unbalanced, an accident
can be happened due to the machine fell over.
(2) Be careful not to insert a finger or hair in the rotating unit.
Be careful not to insert a finger of hair in the rotating unit (motor, fan, paper feeding part, etc)
while the machine is operating. Once it happens, you could harm.
(3) Do not put the ink cartridge into a fire. It could blow up.
(4) Do use copies if it is important document when using fax or complex machine. It is possible to
tear an important doc. or expensive picture when faxing and scanning.
(5) Do not place a pot contains water/chemical or small metals. If those are got into the inner side
of machine, a fire or electric shock can be occurred.
(6) Do not install it in where lots of moisture or dust exists or where raindrop reaches. A fire or elec-
tric shock can be caused.
(7) Do not place a candlelight, burning cigarette, and etc. on the machine. Do not install it near to
heater. A fire can be occurred.
Caution 4>>Precaution when assembly/disassembly
When replace parts, do it very carefully. Do memorize the location of each cable before replace
parts for reconnecting it afterwards. Do memorize.
Please perform the below before replace or disassembly the parts.
(1) Check the contents stored in the memory. All the information will be erased after replace main
board. The information needed to keep has to be written down.
(2) Before servicing or replacing electric parts, take off a plug.
(3) Take off printer cables and power code connected to printer.
(4) Do use formal parts and same standardized goods when replacing parts.Must check the prod-
uct name, part code, rated voltage, rated current, operating temperature, etc.
(5) Do not give an over-force when release or tighten up the plastic parts.
(6) Be careful not to drop the small parts such as screws in the printer.
(7) Be careful not to change the location of small parts such as screws when assembling and dis-
assembling.
(8) Do remove dust or foreign matters completely to prevent fire of tracking, short, or etc.
(9) After finished repair, check the assembling state whether it is same as before the repair or not.
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Precautions
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Samsung Electronics
1.3 ESD Precations
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 “antistatic” 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.
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Precautions
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Samsung Electronics
1.4 Tool for Troubleshooting
The following tools are recommended for safe and smooth troubleshooting described in this service manual.
Caution>> Mind your hands not to be touched when you disassemble and reassemble
PBAASS'Y, such as the main board.
DVM(Digital Volt Meter)
Standard: Indicates more than 3 digits.
1
Pinset
Standard: For general home use, small
type.
4
Pinset
Standard: For general home use, small
type.
4
Software(Driver) installation CD
ROM(SF-331P only)
7
Cotton Swab
Standard : For general home use, for
medical service.
5
Cleaning Equipments a IPA
(Isopropyl Alcohol)dry cloth or a
soft stuff neutral detergent.
6
Electronic Scale
Standard: Equipment to check the weight
of consumables supplied by
Samsung Electronics.
(The gram unit can be measured.)
2
Driver
Standard : "-" type, "+" type (M3 long, M3
short, M2 long, M2 short).
3
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Precautions
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Samsung Electronics
1.5 Acronyms and Abbreviations
The table in the below explains abbreviations used in this service manual.
The contents of this service manual are declared with abbreviations in many parts. Please refer to the table.
ADF.................................... Automatic Document Feeder
ASF.................................... Automatic Sheet Feeder
BPS.................................... Bits Per Second
CID..................................... Caller ID
CIS ..................................... Contact Image Sensor
CN...................................... Connector
CNG................................... Calling
CPM .................................. Copy Per Minute
CR...................................... Carriage Return
DPI ..................................... Dot Per Inch
DRPD................................. Distinctive Ring Pattern Detection
DTMF................................. Dual Tone Multi Frequency
ECM .................................. Error Correction Mode
FF....................................... Fast Forward
I/O....................................... Input/Output
ICM..................................... In Coming Message
IP........................................ Image Processor
KBPS ................................ Kilo Bits Per Second
LCD.................................... Liquid Crystal Display
LED.................................... Light Emitting Diode
LF....................................... Line Feed
LIU ..................................... Line Interface Unit
MFP ................................... Multi function Peripheral
MIC..................................... Microphone
MODEM ............................ MOdulation-DEModulation
NVRAM ............................. Nonvolatile Random Access Memory
OGM ................................. Out Going Message
OHD................................... On Hook Dial
OPE.................................... Operational Panel
PABX.................................. Private Automatic Branch EXchange
PBA.................................... Printed Board Assembly
PCL3.................................. Printer Command Language 3
PPM ................................... Page Per Minute
PSTN ................................ Public Switched Telephone Network
PWM ................................. Pulse Width Modulation
REW .................................. Rewind
RTC ................................... Real Time Clock
RX ...................................... Reception
SMPS................................. Switching Mode Power Supply
SS....................................... Service Station
SW .................................... Switch
TAM ................................... Telephone Answering Machine
TCR.................................... Transmission Confirmation Report
TTI ..................................... Transmit Terminal ID
TX ...................................... Transmit
U.I ...................................... User Interface
USB ................................... Universal Serial Bus
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