Troubleshooting

6.1.7 Uneven Density

Description Print density is uneven between left and right.

 

Check and Cause

Solution

 

 

 

1.

The pressure force on the left and right

1. Replace both the left and right bush and

 

springs of the transfer roller is not even,

spring assemblies.

 

the springs are damaged, the transfer

 

 

roller is improperly installed, or the trans-

 

 

fer roller bushing or holders are damaged.

 

2.

The life of the Toner cartridge has

2. Replace the toner cartridge and try to print out

 

expired.

 

3.

The toner level is not even on the toner

3. Gently shake the toner cartridge and try

 

cartridge roller due to the damaged blade

printing again. If the problem persists

 

or low toner.

replace the toner cartridge.

 

 

 

6.1.8 Background

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Light dark background appears in whole area of the printing.

 

Check and Cause

Solution

 

 

 

1.

Printing large quantities of low coverage

1. The toner cartridge is basically designed to

 

(2%) pages or the printer has not been

print 3,000 sheets with 5% image. If it

 

used for a long time.

prints more than 3,600 sheets with 2%

 

 

coverage, a background can occur.

2.

Is a recycled toner cartridge be

2. The A/S is not guaranteed if using a recy-

 

used?

cled toner cartridge.

 

 

Note try shaking the toner cartridge gently

 

 

from side to side. If the problem persists

 

 

replace the toner cartridge.

3.

Has the life span of the toner

3. Replace the toner cartridge when its life is

 

cartridge ended?

expired.

4.

Is the movement(Up and Down) of

4. Clean the transfer roller bushes.

 

the transfer roller smooth?

 

5. Is the HVPS normal?

5. Clean the high voltage charge terminals.

 

 

If this does not resolve the problem replace

 

 

the HVPS.

 

 

 

6-4Service Manual

Samsung Electronics

Page 85
Image 85
Samsung SCX-4200 manual Uneven Density, Background