7. Maintenance & Troubleshooting
7-1 Preventative Maintenance
The cycle period outlined below is a general guideline for maintenance. The example list is for an average
usage of 50 transmitted and received documents per day. Envir onmental conditions and actual use will vary
these factors. The cycle period given below is for refer ence only.
Samsung Electronics 7-1
COMPONENT CLEANING CYCLE REPLACEMENT CYCLE SOLUTION
SCANNER
PRINTER
ADF Rubber
ADF Roller
Drive Roller
White Roller
CIS
Cartridge
Pickup Roller
Feed Roller
Transfer Roller
Fuser
Driver
6 Months
1 Year
1 Year
6 Months
6 Months
1 Year
1 Year
10,000 Pages
20,000 Pages
50,000 Pages
50,000 Pages
5,000 Pages
50,000 Pages
50,000 Pages
50,000 Pages
30,000 Pages
50,000 Pages
7-2 Diagnostics
This section describes methods and procedure s t o isolate the cause of a malfunction in the machine. This
machine displays diagnostic information on the LCD. In addition, it can perform a series of tests that allow the
machine to observe individual machine functions.
7-2-1 Error Messages
Error Message Description Solution
BUSY! REDIAL? The machine is waiting the programmed You can press STA RT to immediately
interval to automatically redial. redial, or STO P to cancel the r edial
operation.
COMM. ERROR A problem with the facsimile Tr y again.
communications has occurre d.
DOCUMENT JAM Loaded document has Jammed Clear the document Jam.
in the feeder
7-2 Samsung Electronics
Maintenance & Troubleshooting
Error Message Description Solution
The top cover is not securely latched.DOOR OPEN or
NO TONER
Replace the cover firmly until it clicks in
place.
You have tried to select a gr oup location
where only a single location number can be
used, such as when adding locations for a
multi-dial operation.
GROUPNOT
AVAILABLE
Try again, check location for group.
No toner cartridge in the fax machine.
The machine stops.
Install the toner cartridge in place
properly.
Your unit cannot connect with the r emote
machine, or has lost contact because of a
problem on the phone line.
LINE ERROR Try again. If failure persists, wait an hour
or so for the line to clear then try again.
You have attempted to set up a sending
operation with no document loaded.
LOAD DOCUMENT Load a document and try again.
The memory has become full.MEMORYFULL Either delete unnecessary documents, or
retransmit after more memory becomes
available, or split the transmission into
mo re than one operation.
The remote machine was not answere d after
all the r edial attempts.
NO ANSWER Try again.
Make sure the remote machine is OK.
The one-touch or speed dial location you
tried to use has no number assigned to it.
NO. NOT
ASSIGNED
Dial the number manually with the
keypad, or assign the number.
The recording paper has r un out. The printer
system stops.
NO PAPER Load the recording paper in the paper
feeder.
Recording paper has jammed in paper
feeding are a.
PAPER JAM 0 Press ST O P and clear the jam.
Recording paper has jammed inside the unit.PAPER JAM 1 Clear the jam.
The printer part has overheated.OVERHEAT Your unit will automatically return to the
standby mode when it cools down to
normal operating temperature . If failure
persists, call service.
Samsung Electronics 7-3
Maintenance & Troubleshooting
Error Message Description Solution
The jammed paper still remains inside the
unit.
PAPER JAM 2 Clear the jam.
When setting up to poll another fax
machine, you have used an incorrect poll
code.
POLLCODE ERROR Enter the correct poll code.
The remote fax machine you want to poll is
not r eady to r espond to your poll.
POLLING ERROR The remote operator should know in
advance that you are polling and have
their fax unit loaded with the original
document.
A power failur e has occurred .POWER FAILURE If ther e has been documents stored in
memory. Power failur e report will be
printed automatically when the power is
restored.
The machine is warming up and is off line. PLEASE WAIT W ait until the machine is on-line.
Refer to tr oubleshooting “FUSER
ERROR”.
There is a problem in the Fuser unit.FUSER ERROR
Refer to tr oubleshooting “ENGINE
ERROR”.
There is a problem in the LSU (Laser
scanning unit)
ENGINE ERROR
Maintenance & Troubleshooting
7-2-2 Test Mode
The test mode is used to test certain functions of the
machine. The available tests are:
•User mode : Self Test
•Tech mode : Switch Test → Modem Test →
Memory Test → ROM Test →
DRAM Test → Pattern Test
To enter the Test Mode:
1. Get into the Tech mode by pressing Menu,#,1,
9,3,4.
2. In Tech mode, press Menu, and ‘Maintenance’ on the
one-touch keypad.
3. Scroll to the options by pressing „or
repeatedly until you find the one you want.
4. Press Enterto initiate the test mode.
waveform in the pattern. It is best when the wave
form is level. If there are many points sharply
broken, perform the Make shading procedure
several times until you get a level waveform.
SWITCH TEST
This test checks the operation of the LCD display
and the LED indicators that interface the switches
on the operation panel.
MODEM TEST
This test causes the machine to generate a particular
frequency to verify the operation of the modem
control circuits and the modem.
MEMORY TEST
This test is used for checking the Random Access
Memory (RAM) on the main PBA. If all memory is
working normally, the LCD shows TESTING OK!.
When this testing is carried out, any picture data
stored in memory is erased.
CLEANING FUSER
This procedure removes excess toner on the OPC
drum.
1. Make sure that paper is loaded in the automatic
feeder.
2. Press Menu, and Self-Test on the one-touch
keypad.
3. Press Enter. The machine automatically pulls in a
sheet of paper, and prints out. The toner particles
on the OPC drum surface is fixed to the paper.
MAKE SHADING
This procedure is needed to set (make) a new
shading reference value. The reference value is
preset at factory. However, when the CIS or the
main board is replaced with new one, the reference
value must be set again.
Load the white, letter-sized paper into the feeder
and perform the test mode (MENU+ONE-TOUCH
04 ‘SYSTEM SETUP’). Follow the next steps as
instructed through the LCD window. After the
shading value is newly set, the shading value
pattern is automatically printed. The shading value
pattern shows the value of the white reference level
of the Contact Image Sensor. Check for the
ROM TEST
This test mode will display and check the current
ROM level in your machine.
FLASH VER. : 1.0.0
ENGINE VER : 1.0.1
DRAM TEST
This test checks the DRAM memory status and
shows if it is functioning properly
PATTERN TEST
1. Pattern Test ?
2. Pattern 1 ? - There are 4 different pattern tests.
Scroll to the options by pressing „or
repeatedly until you find the one you want.
3. Press START key.
4. Key in the number of pages.
5. Press START key.
7-4 Samsung Electronics
Samsung Electronics 7-5
Maintenance & Troubleshooting
SAMPLE OF APROTOCOL DUMP LIST
7-2-3 Maintenance List
A number of reports can be printed from the fax
machine within the test mode. The protocol list and
memory dump list all contain detailed information
which may be required when contacting technical
support.
To printout the pr otocol and memory dump lists:
1. Get into the Tech mode by pressing Menu,#,1,
9,3,4.
2. In Tech mode, pre ss Menu, and ‘ Tx. Confirm’ on
the one-touch keypad.
3. Pr ess „ or repeatedly until you find the
P rotocol Dump List. When you find ‘PROTOCOL
REPORT?’, pr ess ENTER. SAMPLE OF A
PROTOCOL DUMPLIST
7-6 Samsung Electronics
Maintenance & Troubleshooting
7-3 Print Quality
Error Status Check Solution
Vertical black line and band
Vertical white line
No image
Light image
Dark image
Background
Ghost
1. Change Toner cartridge
2. Replace LSU
1. Clean LSU window
2. If not LSU, change Toner cartridge
1. Removing seal tipe
2. Measure the resistance between frame
ground and the ground spring attached
frame. Confirm stable ground. Unless
bad ground, detach cabinet, check where
is bad point
3.Adjust LSU or replace it
4. Normal Dev bias = -300V
5. Shake toner cartridge and print.If a liitke
good, toner is empty
6. Test engine test pattern with DCU,
replace Video board
1. Check and remove tape
2. LSU light power check is difficult.
Compare with new one and check.
3. Check toner and developer counter
4~5. Measure all high voltage output
6. Leakage toner cause bad contact and
increase contact resistance. Clean
contaminated area.
1. Check the rated level and replace
2. Set to power rating
3. Replace defected board
1. Adjust to the rated status
2. Replace Toner cartridge
1. Check every high voltage
2. Check the turn-on PTL, LED crash
3. Clean the inside machine or replace
toner cartridge
1. Bad blade of Toner cartridge
2. LSU
1. LSU window contamination
2. Toner cartridge
1. Seal tape is removed?
2. GND OPC is well grounded?
3. LSU running well?
4. Biss voltage is normal?
5. Lower toner?
6. Is there video data from controller?
1. Check seal tape removing
2. LSU light power normal?
3. Enough toner?
4. High charger voltage?
5. Lower bias voltage
6. Contamination of high voltage
contact
7. Transfer volatge and roller
1. LSU light power normal?
2. Bias voltage output is high?
3. Video data is always supplied?
1. High voltage output is normal?
2. C/R of Toner cartridge is
contaminated?
1. High voltage output
2. Pre-Transfer Lamp
3. Bad high voltage contact
Samsung Electronics 7-7
Maintenance & Troubleshooting
Error Status Check Solution
Stains on back of
paper
Poor Fusing
Partial blank image
(not periodic)
Partial blank image
(periodic)
Different image density
(left and right)
Horizonral band
1. Clean the transfer roller with vaccum
cleaner
2. Clean the area of paper path with cloth
or air cleaner.
3. Remove fuser and replace it
1. Should use recommended paper
2. Check engine controller board.
If you have not thermometer, measure
the thermistor voltage to CPU, If
2.98V±5% in printing CPU works well.
Then, disassemble fuser and check the
thermistor contact and thermistor.
3. Re-check after putting the machine in the
warm place for certain period.
1. Replace Toner cartridge
2. Checkand adjust
1~2. Replace toner cartridge
3. Replace transfer roller
1~2. Change toner cartridge
3. Check left and right spring of transfer
roller and the spring pressing the
developer inside the machine
1. Clean each contact and check good
contact
2. Clean charge roller
3. Replace fuser unit
4. Check engine controller
1. Contamination of transfer roller
2. Stains of paper path
3. Pressure roller’s contamination
1. Use recommended paper?
2. Check fusing temperature
3. The machine was under the low
temperature for a long time?
1. Toner is low?
2. The toner cartridge is out of
position?
1. Develope roller scar or particle
2. Scar or particle (94 mm)
3. Transfer roller scar or particle
(47 mm)
1. Charge roller’s pressure force
unbalance
2. Dev. roller and OPC or Dev. roller
and blade’s pressure force
unbalance
3. Transfer roller’s pressure force
unbalance of each side
1. Unstable high voltage contact
2. Charge roller’s contamination
3. Contamination of heat roller
4. Malfunction of LSU
7-8 Samsung Electronics
Maintenance & Troubleshooting
No Roller Abnormal image period Kind of abnormal image
1 OPC Drum 96.2mm White spot
2 Charge Roller 37.7mm Black spot
3 Supply Roller 31.3mm Horizontal density band
4 Develope Roller 46.1mm Horizontal density band
5 Transfer Roller 47.1mm Black side contamination/transfer fault
6 Heat Roller 56.4mm Black spot, White spot
7 Pressure Roller 56.5mm Black side contamination
Samsung Electronics 7-9
Maintenance & Troubleshooting
No Image
Samsung Electronics
Maintenance & Troubleshooting
7-10
Samsung Electronics 7-11
Maintenance & Troubleshooting
All Black
7-12 Samsung Electronics
Maintenance & Troubleshooting
Vertical White Line (Band)
Samsung Electronics 7-13
Maintenance & Troubleshooting
Dark Image
7-14 Samsung Electronics
Maintenance & Troubleshooting
Background
Samsung Electronics 7-15
Maintenance & Troubleshooting
Ghost
7-16 Samsung Electronics
Maintenance & Troubleshooting
Black Dot
Samsung Electronics 7-17
Maintenance & Troubleshooting
Horizontal Band
7-18 Samsung Electronics
Maintenance & Troubleshooting
Irregular Density
Samsung Electronics 7-19
Maintenance & Troubleshooting
White Spot
7-20 Samsung Electronics
Maintenance & Troubleshooting
Trembling at the End When OHP Printing
Samsung Electronics 7-21
Maintenance & Troubleshooting
Poor Fusing Grade
7-22 Samsung Electronics
Maintenance & Troubleshooting
7-4 Malfunction
Error Status Check Solution
No power
Fuser Error
Cover open
Jam 0
Jam 1
1. If supplying power differs from machine’s
power rating, replace the machine.
2. Replace it.
1. Detach AC connector and measure the
resistane between pin 1 and 2. If it is megohm,
thermostat is open, Replace it.
2. Check bad connector contact or wire is cut.
3. Check thermistor wire and its connection.
4. Replace Engine Control board
1. Open top cover and press the lever with pen. If
Controller detects cover close, there is some
mechanical trouble in top cover and lever’s
assembly. If not so there is electrical problem.
1. Check whether solenoid is working or not by
using DCU mode #6 (Acoustic judgement)
2. Check feed sensor malfunction.
Check if it is misplaced with paper width
sensor.
3. Re-try inserting a fewer papers.
•fan the papers and align
•take out the loaded papers and insert
them reverse direction
4. Take out the loaded papers and insert them
reverse direction
•inserted papers as recommended for
Manual Feeding?
•When loading, tap the papers until paper
detect sensor senses loading
5. When using long papers, use the Stacker
Extender
6. Adjust Guide to fit the paper width
1. It is mostly resulted from double feeding.
Check paper is well stocked in feeder.
2. Check feed actuator position and actuator’s
operating. There may be stiff movind or double
reflection. If not so, check the operation of feed
sensor by DCU mode #8.
3. Check exit lever operation. Remore jam and
check actuator moving by hand. If actuator is
too stiff, paper is wrapped around the heat
roller. Remove obstacles or replace.
1. Check power is supplying
2. Check fuse F1 open
1. Thermostat open
2. AC wire open
3. Thermistor wire open
4. Engine Controller
1. When close Top cover, check the
lever is pressed
2. Micro switch’s contact
3. CPU and related circuit
Check where Jam 0 happens
1. Paper is not picked up
2. Paper is located in feed sensor
3. Happened when inserting specific
papers such as envelope into the
MPF (Multipurpose Paper Feeder)?
4. Happened when inserting specific
papers such as envelope into the
Manual Feeder?
5. Is the Stacker Extender is folded out?
6. Does not the Guide Adjust distort the
papers
Paper is stopped in just after of fuser
unit.
Samsung Electronics 7-23
Maintenance & Troubleshooting
Error Status Check Solution
Jam 2
Jam 2 at face-up
tray
Jam 2 at face-down
tray
Cutch error
High voltage error
Feeding obstacles
Skew
1. Remove paper using pinset or some tool and
watch if separate claws have any troble. Clean
around fuser.
2. Check locking works wells. Watch whether the
ribs of exit cover hace any burr or resisitive
edge. If they do, remove obstacles or replace.
1. When using the thick paper such as envelope,
card stock, label and OHP, one-sheet printing
is recommended
2. To use thin paper, face-down is recommended
1. Load recommended quantity of papers
2. Open the Cover Front and check whether roller
or spring, which are related to paper out, is not
out of position. If so, re-locate or replace.
1. Check whether the spring is expanded or not.
2. Check armature is well installed. It may be
unstable assemble.
3. Remove the Joint board.
1. Remove the Toner cartridge and open the
cover and press cover open switch lever and
measure the voltage with high voltage probe
and sending printing data. If the voltage is
normal, change the toner cartridge.
2. Disassemble the left side cover, and check HV
of the solder side of HVPS and change it.
1. Re-insert the film neatly into the front. When
inserting it, the Plate-knockup needs to be
aligned to the front.
2. Turn the power off and on. Open and close the
Top cover to return to the original state.
Fit the paper width using the Guide adjust.
Check where Jam 2 happens
1. Paper is curled and cannot exit.
2. Paper is curled in the exit cover?.
1. Tried to print and stack pages which
are not allowed for specific paper
type?
2. Does the too thin paper, which
passed through the fuser, touch the
Cover Fornt?
1. Then paper is not drawn in because
of the stack of papers in the Out tray
2. Does it curl while coming out?
1. Check the spring of solenoid
2. Check the armature
assembly/cushion
3. Electrical check
1. Check the terminal output voltage
2. Check HVPS
1. Does the black film in MPF prevent
the paper loading?
2. Does the Plate-knockup prevent the
paper loading?
Is the Guide adjust set to the paper
width?
7-24 Samsung Electronics
Maintenance & Troubleshooting
Error Status Check Solution
Stacking
Engine Error
1. Use extender as per the paper length.
2. The Face-up stacker normally can hold 100
pages when using 75g/m
2
, however, stacking
capacity can be lowered depending on the type
of papers.
3. Face-down stacking is recommended for
specific papers and one-sheet feed. So, the
multiple page stacking is not guaranteed.
1. Took out the Stacker extender to
support long papers?
2. Stacked too many papers more than
Stacker can hold?
3. Face-up stacker does not neatly
stack the papers and stack not in
order.
Refer to troubleshooring “ENGINE ERROR”.
1. Check CBF Harness_5P/6P.
(HVPS B’D to LSU)
2. Check CBF Harness-24P.
(ENGINE B’D to HVPS B’D)
3. Check CBF Harness-20P.
(ENGINE B’D to JOINT B’D)
Samsung Electronics 7-25
Maintenance & Troubleshooting
No Power (LCD NO display LED Off)
Fuser Error
7-26 Samsung Electronics
Maintenance & Troubleshooting
Samsung Electronics 7-27
Maintenance & Troubleshooting
Paper Jam (Mis-feeding)
7-28 Samsung Electronics
Maintenance & Troubleshooting
Paper Jam (Jam1)
Samsung Electronics
Maintenance & Troubleshooting
7-29
Engine Error
7-30 Samsung Electronics
Maintenance & Troubleshooting
Memo
Loading...