Troubleshooting.pdf

Chapter 8. Troubleshooting

8. Chapter 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.

Power On

Refer to

"8.1.1 Basic Check List"

OP Panel

ON?

- No Power

- LCD Module

- Main PBA

Ready

Power Save

Indicate

"Error Message"

Refer to

"8.5 Error Message"

Printing

guality is

normal?

Refer to

"8.2 Solution of Image Problem"

END

Service Manual

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Samsung Electronics

Chapter 8. Troubleshooting

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

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Service Manual

Samsung Electronics

Chapter 8. Troubleshooting

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.

Service Manual

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Samsung Electronics

Chapter 8. Troubleshooting

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.

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Service Manual

Samsung Electronics

Chapter 8. Troubleshooting

8.2 Solution of Image Problem

- No Image

Cause

Sequence of Treatment

Driver Installation Problem.

Try printing a Demo Page.

Check that the operating system driver was

installed correctly.

Toner cartridge contacts dirty or not making

good contact or empty Toner Cartridge

(when printing a single color image)

Check and clean the toner contacts.

Re-seat the Toner Cartridge.

Replace the Toner cartridge

ITB cartridge contacts dirty or not making

good contact or Faulty ITB unit

Check and clean the ITB contacts.

Re-seat the ITB Unit.

Replace ITB Unit

LSU cable harness plugs not fitted properly

or faulty LSU.

Check the connectors on the LSU Unit and

main PWA are properly inserted.

Replace the LSU Unit, cables or MAIN PWA

as required

Toner transfer problem

Check all HV contacts and cables.

Replace the HVPS.

- Completely Black Image

Cause

Sequence of Treatment

OPC Drum BIAS contacts dirty or not mak-

ing good contact.

Clean Drum contacts..

Replace the OPC Drum.

Charge Voltage of the OPC Drum is unstable.

Replace the HVPS Board.

- White Spots / Black Spots / Colored Spots

Cause

Sequence of Treatment

Contamination of the internal mechanism of the

toner cartridge

Replace the Toner Cartridge.

OPC Drum surface contaminated or damaged.

Replace the OPC Drum.

ITB Unit belt is contaminated or damaged.

Replace the ITB Unit Belt.

Fuser Unit is contaminated.

Clean or replace the Fuser Unit.

Service Manual

8-5

Samsung Electronics

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