Samsung ML-2010 Troubleshooting
Troubleshooting
Samsung Electronics
Service Manual
6-1
6
6. Troubleshooting
6.1 Checking Symptoms
Before attempting to repair the printer first obtain a detailed description of the problem from the customer.
Power On
Indicate
"Lamp toggle"
On-Line LED
Green OK?
Print(test pattern)
printing
Quality is
Nomal?
Refer to "Solution
of Image Problem"
Refer to
"Chapter 4.4"
END
- No Power
- Power Module error
- Main PBA
On-Line LED
ON?
Samsung Electronics
Service Manual
Troubleshooting
6-2
6.1.1 Basic Check List
1. Check the Power.
• Does "Warming Up" appear on the display?
--> If not check power cable, switch or SMPS.
--> Does the wall socket work?
• Do the Motors or other components initialize (listen for main motor, fan and LSU sounds)?
--> If not or there are none of the normal startup sounds check cable, switch or SMPS.
--> Does the wall socket work?
2. Check the LED of Panel.
• Is there On-Line LED ON?
--> If not check power cable, switch SMPS or Main board.
--> Does the wall socket work?
• Is the abnormal Lamp?
--> Check the main PBA and cable harness.
3. Check the Paper Path
• Is there a Paper Jam?
--> Remove any paper fragments caught in the paper path.
• Paper Jam occurs repeatedly at a specific point in the Paper Path
--> Open the fuser cover, Jam clear.
--> Dismantle the machine and carefully inspect the region where the jam occurs.
(Especially, check if paper fragments are caught in the Fuser
4. Print the Information Page (Configuration).
• Try printing a test page from a computer.
--> If there is an error check cables and driver installation.
5. Check the Print Quality.
•Is there are a Print Quality Problem?
--> Refer to section 6.5 (Page 6-17).
6. Check consumables (toner etc.).
•Using the keys print the Test Pattern.
--> Expected life of various consumable parts, compare this with the figures printed and replace as required
Troubleshooting
Samsung Electronics
Service Manual
6-3
6.1.2 Initial Inspection
1. Check Power part
1. The printer does not work no matter how long you wait.
A. Is the Power Switch (printer and wall socket) turned on ?
B. Is the Power Cord connected to the printer correctly ?
C. Is the Power cord connected to the wall socket correctly ?
D. Is wall socket working ?
E. Is the unit rated at the same voltage as the supply ?
2. Does the Fan work when power is turned on?
A. Check the connectors on the SMPS.
B. Check the fuses in the SMPS.(F1)
2. Check the Installation Environment.
1. Ensure the installation surface is flat, level and free from vibration.
If necessary move the printer.
2. Ensure that the temperature and humidity of the surroundings are within specification
If necessary move the printer.
3. Ensure that the printer is position away from any air conditioning or other heating or cooling equipment. Also ensure
that is not positioned in a direct draft from any air conditioning, fan or open window.
If necessary move the printer.
4. Ensure the printer is not positioned in direct sunlight.
If it is unavoidable use a curtain to shade the printer.
5. Ensure the printer is installed in a clean dust free environment.
Move the printer to clean area if necessary.
6. Some industrial or cleaning processes give of fumes which can affect the printer.
Move the printer away from this type of air pollution
3. Check paper type.
1. Use only paper which is of a suitable quality, weight and size?
See the user guide.
4. Check the overall condition of the printer
1. Is the printer properly maintained ?
Clean the Paper Transport Passages.
Any rollers with dirt surfaces should be cleaned or replaced.
Samsung Electronics
Service Manual
Troubleshooting
6-4
• Description Printing begins at wrong position on the paper.
Check and Cause Solution
Wrong sense time caused by defective feed sensor
actuator.
Replace the defective actuator
Check and Cause Solution
1. Check the Solenoid by using DCU diagnostic mode
06.
2. Check if the pad is loose due to bad sealing of the
side-pad.
3. Check the surface of the roller-pickup for foreign matter.
4. If the paper feeds into the printer rand Jam 0 occurs,
perform DCU to check feed-sensor of the engine
board.
1. Replace the solenoid.
2. Replace the side-pad Assembly Lor R, if necessary.
3. Clean with soft cloth dampened with IPA(Isopropyl
Alcohol) or water.
4. Replace the SMPS, HVPS or Sensor.
6.2.2 JAM 0
• Description
1. Paper is not exited from the cassette.
2. Jam-0 occurs if the paper feeds into the printer.
BIN PATH
6.2 Bad discharge
6.2.1 Wrong Print Position
Troubleshooting
Samsung Electronics
Service Manual
6-5
Check and Cause Solution
1. If the recording paper is jammed in front of or inside
the fuser. (Perform DCU diagnostic code 08)
2. If the recording paper is stuck in the discharge roller
and the fuser just after passing through the ActuatorFeed, Feed Actuator may be defective.
1. Replace the SMPS.
2. Reassemble the Actuator-Feed and Spring-Actuator
if the returning is bad.
6.2.3 JAM 1
• Description
1. Recording paper is jammed in front of or inside the fuser.
2. Recording paper is stuck in the discharge roller and in the
fuser just after passing through the Actuator-Feed.
BIN PATH
Check and Cause Solution
1. If the paper is completely fed out of the printer, but Jam
2 occurs : Exit sensor is defective.
• After the paper is completely discharged, actuator
Exit should return to the original position to shut the
photo-sensor. Sometimes it takes longer hour than it
should and does not return.
2. If the paper is rolled in the Fuser Roller:
• This occurs when a Guide claw is broken away or
transformed.
• It occurs when the Spring of a Guide claw is broken
away or transformed.
• It occurs when the Heat-Roller or Pressure-Roller is
seriously contaminated with the toner.
3. Paper is accordion in the fuser.
1. Check if the exit sensor actuator is defective.
• Check if the actuator exit is unformed (Check if the
lever part is unformed in shape).
• Check whether burrs occur in the assembly part of
the actuator exit or not and if the actuator is
smoothly operated.
• Check if foreign matters and wire get caught in the
actuator exit's operation.
2. If the paper is stuck in the fuser : disassemble the
fuser and remove the jammed paper, and clean the
surface of the pressure roller with dry gauze.
3. Remove the jammed paper after disassembling the
fuser : Clean the surface of the pressure roller with
dry gauze.
• Remove the toner particles stained on the rib.
• Check the assemblage and performance of the exit.
6.2.4 JAM 2
• Description
1. Recording paper is jammed in front of or inside the fuser.
2. Recording paper is stuck in the discharge roller and in the
fuser just after passing through the Actuator-Feed.
BIN PATH
Samsung Electronics
Service Manual
Troubleshooting
6-6
6.2.5 Multi-Feeding
• Description Multiple sheets of paper are fed at once.
Check and Cause Solution
1. Solenoid malfunction(the solenoid does not work
properly): Perform DCU Diagnostic Code 06.
2. Pad-Friction is contaminated with foreign matter.(oil...)
3. The face of paper is blended.
1. Replace the solenoid if necessary.
2. Clean the pad friction with soft clothe dampened
with IPA(Isopropyl Alcohol).
3. Use the smooth paper.
6.2.6 Paper rolled in the Fuser
• Description If contaminated at intervals of 57mm on the back of a paper.
Check and Cause Solution
1.
Contamination of the pressure roller or heat
roller (Background, Hot off set).
2.
Check the claw of the fuser whether it is unfitted.
1.
After disassembling the fuser, clean contamination between the heat roller and the thermostor and remove the contamination of the
pressure roller.
2.
If there is heavy background, repair it by the
background troubleshooting method.
3. The surface of the heat roller with IPA or
water
4. Check the warp or separation of the sprint
claw and the holder plate claw, and then manage it.
Troubleshooting
Samsung Electronics
Service Manual
6-7
6.2.7 Paper rolled in the Toner Cartridge (OPC Drum)
• Description Paper is rolled up in the OPC.
Check and Cause Solution
1. Paper is too much thin.
2. The face of paper is curled.
1. Recommend to use normal paper.
2. How to remove the rolled in the OPC Drum.
• Remove the paper while turning the OPC
Drum against the ongoing direction.
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