Samsung CLP-510_XEV Troubleshooting

8

8

8-1

Samsung Electronics

Troubleshooting

Service Manual

8. Troubleshooting

8.1 Procedure of Checking the Symptoms

Before attempting to repair the printer first obtain a detailed description of the problem from the customer.

OP Panel

ON?

Refer to
"8.1.1 Basic Check List"

Print

Printing

guality is

normal?

END

Ready

or

Power Save

Indicate

"Error Message"

Power On

- No Power

- LCD Module

- Main PBA

Refer to
"8.5 Error Message"

Refer to
"8.2 Solution of Image Problem"

8-2

Troubleshooting

Samsung Electronics

Service Manual

8.1.1 Basic Check List

1. Check the Power.

• Does "Warming Up" appear on the display?

--> If not check power cable, switch or SMPS. (see section 8.1.2 below)

--> 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 LCD Panel.

• Is there any display at all?

--> If not check power cable, switch or SMPS. (see section 8.1.2 below)

--> Does the wall socket work?

• Is the display a meaningful message (are there any broken or badly formed characters)?

--> Check the main PBA and cable harness.

• Is the message on the LCD Panel a standard error message?

--> Refer to section 8.4 or 8.5 (Page 8-14 or 8-18).

3. Check the Paper Path

• Is there a Paper Jam?

--> Remove any paper fragments caught in the paper path.

--> Refer to section 8.3 (Page 8-10).

• Paper Jam occurs repeatedly at a specific point in the Paper Path

--> 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).

• Is there a problem?

--> If there is an error see section 2) or 3) above.

• 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 8.2 (Page 8-5).

6. Check consumables (toner etc.).

•Using the keys print the Information Page.

--> Refer to 8.1.4 below and to section 3.5 (Page 3-3) for expected life of various consumable parts, compare this with
the figures printed and replace as required

8-3

Samsung Electronics

Troubleshooting

Service Manual

8.1.2 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.
C. Check any error message display on the LCD panel and refer to the troubleshooting section 8.4 or 8.5 (Page 8-14 or 8-18).

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.

8-4

Troubleshooting

Samsung Electronics

Service Manual

8.1.3 Check the length of life of components

The length of life of consumable components is displayed either by operating time (% of life) or quantity of output. The
printer will not work if any of these parts have exceeded there expected life. When a user replaces any of these consumable
parts they must reset the appropriate counter using the maintenance menus (see section 7.4, page 7-13).

The printer calculates the working time and quantity of output for each component and saves this information.

1. The Working time for each component (OPC Drum, Toner Cartridge, Image Transfer Belt, Fuser Unit) is measured
every 30 seconds when the Transport Motor and Fusing Contact Motor are active.

2. In order to calculate the number of images printed 1 is added to the appropriate counter every 30 seconds. The
amount of waste toner is calculated based on the number of pixels in the image.

3. When the user replaces any of the consumable parts and resets the appropriate counter it starts again from 0.

8-5

Samsung Electronics

Troubleshooting

Service Manual

8.2 Solution of Image Problem

Cause Sequence of Treatment

Driver Installation Problem.

Toner cartridge contacts dirty or not making
good contact or empty Toner Cartridge
(when printing a single color image)

ITB cartridge contacts dirty or not making
good contact or Faulty ITB unit

LSU cable harness plugs not fitted properly
or faulty LSU.

Toner transfer problem

Try printing a Demo Page.
Check that the operating system driver was
installed correctly.

Check and clean the toner contacts.
Re-seat the Toner Cartridge.
Replace the Toner cartridge

Check and clean the ITB contacts.
Re-seat the ITB Unit.
Replace ITB Unit

Check the connectors on the LSU Unit and
main PWAare properly inserted.
Replace the LSU Unit, cables or MAIN PWA
as required

Check all HV contacts and cables.
Replace the HVPS.

- No Image

Cause Sequence of Treatment

OPC Drum BIAS contacts dirty or not mak­ing good contact.

Charge Voltage of the OPC Drum is unstable.

Clean Drum contacts..
Replace the OPC Drum.

Replace the HVPS Board.

- Completely Black Image

Cause Sequence of Treatment

Contamination of the internal mechanism of the
toner cartridge

OPC Drum surface contaminated or damaged.
ITB Unit belt is contaminated or damaged.
Fuser Unit is contaminated.

Replace the Toner Cartridge.

Replace the OPC Drum.
Replace the ITB Unit Belt.
Clean or replace the Fuser Unit.

- White Spots / Black Spots / Colored Spots

8-6

Troubleshooting

Samsung Electronics

Service Manual

Cause Sequence of Treatment

Paper Path is contaminated.
ITB Unit Belt is contaminated.
Pressure Roller of Fuser Unit is contaminated.

Open covers fully and clean the Paper Path.
Clean or replace the ITB Unit.
Clean or replace the Fuser Unit.

- Toner Smudges on the reverse side.

Cause Sequence of Treatment

If the background is contaminated with only
one color.

If the background is generally contaminated
with all color.

If Printing Density is dark(one color only).
If Printing Density is dark(all colors).

Replace the appropriate Toner Cartridge

Ensure TDC process is enabled.
If problem persists replace the OPC Drum

Replace the appropriate Toner Cartridge
Ensure TDC process is enabled.

If problem persists replace the OPC Drum

- Foggy back ground

Cause Sequence of Treatment

Poor toner transfer to OPC-one color only

Poor toner transfer to OPC- al colors

Poor toner transfer to ITB Unit

ITB Bias voltage incorrect.

Check and clean Toner contacts
Replace the appropriate Toner Cartridge

Check and clean Toner, ITB and OPC unit
contacts
Ensure TDC process is enabled.
If problem persists replace the OPC Drum

Check and clean ITB Unit contacts.
Re-install or replace the ITB Unit.

Check and clean ITB Unit contact.
Replace the HVPS.

- Low image density

8-7

Samsung Electronics

Troubleshooting

Service Manual

Cause Sequence of Treatment

Developing process is contaminated.

ITB Unit is damaged or dirty
Fuser Unit is damaged or dirty
Lens Cover of LSU is damaged or dirty.

Replace the Toner Cartridge.
Replace the OPC Drum.

Replace the ITB Unit.
Clean or Replace the Fuser Unit.
Clean the Lens Cover of LSU.

Replace the LSU if the glass is damaged

- Black / White / Colored Lines and Bands

Cause Sequence of Treatment

Afterimage on the OPC
Afterimage on the ITB Unit.
Toner Cartridge is installed incorrectly.
Individual color layers offset.

Replace the OPC Drum.
Re-install or replace the ITB Unit.
Re-set the Toner Cartridge.
Replace ITB Unit.

- Offset Image

Cause Sequence of Treatment

Problem transferring intermediate images to
the ITB .

Contamination of the Paper Path.

Problem transferring intermediate image onto
paper

Check and clean ITB contacts
Re-install or replace the ITB Unit.

Open the covers, check and clean the Paper
Path.

Check and clean T2 roller contacts
Check T2 Solenoid and cam operation - ensure
T2 comes properly into contact when solenoid
operates.

- Deterioration of Print Quality for all Colors.

8-8

Troubleshooting

Samsung Electronics

Service Manual

Cause Sequence of Treatment

If the of Toner Cartridge is bad
If the alignment betweem the OPC and ITB

Units is not carrect.
Uneven contact between OPC and ITB or

between ITB and T2 roller .

Check or replace the Toner Cartridge.
Re-install the OPC and ITB Units.

Re-install or replace the ITB Unit.
Check T2 roller , solenoid and cam operation.

- Deterioration of Printing Quality for Specific Color.

Cause Sequence of Treatment

Uneven contact between OPC and ITB or
between ITB and T2 roller.

Uneven color may occur when a toner
cartridge has just been installed.

Re-install or replace the ITB Unit.
Check T2 roller, solenoid and cam operation.

Make test printing a couple of times.

- Uneven Color Density

Cause Sequence of Treatment

Moisture or wet paper.

Creases in paper.

Fault occurs in Duplex Printing only.

Ensure paper is stored properly and is not damp.
Check paper storage conditions.

1) Creases : Replace the Guide Input.

2) Replace the Fuser Unit.

3) Check OPC, Drum, Toner Cartridge and ITB
Unit for contamination and replace as required.

Replace the Duplex Unit.

- Whited out area