Troubleshooting

6.1.5 Light Image

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

The printed image is light, with no ghost.

 

Check and Cause

 

Solution

 

 

1. Toner Save mode enabled

1. Ensure the Toner Save mode is off. Check

 

 

 

set and driver settings.

2.

Develop roller is contaminated or the

2.

Replace the toner cartridge and try to print

 

toner cartridge is almost empty.

 

out again.

3. Ambient temperature is below than 10°C.

3.

Wait 30 minutes after printer is powered on

 

 

 

before you start printing.

4.

Bad contact caused by dirty terminals on

4.

Clean the cartridge and set contacts.

 

the toner cartridge or set.

 

Generally clean dirt from inside the set.

5.

Abnormal output from the HVPS.

5. Replace the HVPS if the problems are not

 

(Run EDC mode – see sections 6.1.2

 

solved by the above four instructions.

 

and 6.1.3)

 

 

 

 

 

 

6.1.6 Dark Image or a Black

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

The printed image is dark.

 

Check and Cause

 

Solution

1.

No charge voltage in the engine board.

1.

Check the state of the connector which

 

 

 

connects the engine board and HVPS.

2.

Charge voltage fault due to bad contact

2.

Clean the high voltage charge terminals.

 

between toner cartridge and set contacts.

Note if 1 and 2 do not resolve the problem

 

 

 

and the problem persists replace the

 

 

 

HVPS.

3. VD0 signal of the Main PBA is Low state.

3. Replace the LSU Unit or Main PBA.

 

Service Manual

6-3

Samsung Electronics

 

 

 

Page 84
Image 84
Samsung SCX-4200 manual Light Image, Dark Image or a Black