Samsung ML-7000N, Руководство по обслуживанию, Страница: 2 / 58

5. Troubleshooting
5-1 Print Quality
Error status Check Solution
1. Check HVPS output voltage 1. Refer to HVPS output spec
Dark Image
2. Check terminal contact for - Replace the engine board
HVPS. - Refer to “4 - 11”
2. Fix the terminal to contact well.
1. Check the toner quantity. 1. Replace image cartridge.
Light Image 2. Check HVPS output voltage 2. Refor to HVPS output spec.
3. Check the terminal contact for -Replace the engine board.
HVPS. 3. Fix the terminal to contact well.
1. Compare new image cartridge 1. Replace image cartridge
Horizontal Density with present one
Band. 2. Contamination of Transfer 2. Replace transfer roller
Roller
1. Contamination of Fuser Unit 1. Clean Fuser Unit or change
If not improved, replace it.
2. Contamination of Heat roller 2. Clean Heat Roller
Print Contamination
- Refer to “4-5”
3. Contamination of OPC Drum 3. Clean OPC Drum.
If not improved, replace image
cartridge.
1. Contamination of Fuser Unit 1. Clean Fuser Unit.
If not improved, replace it.
Toner on Backside - Refer to “4-5”
of printer page 2. Contamination of transfer Roller 2. Replace Transfer Roller
3. Contamination fo paper path 3. Remove the contamination on
paper path.
1. Check HVPS output voltage 1. Refer to HVPS output spec
2. OPC Drum contamination or - Replace the engine board
image cartridge life 2. Replace the image cartridge
3. Check the contamination of 3. Clean the lens with a soft
Back Ground
PTL lens dry cloth
4. Check the terminal contact for 4. Fix the terminal to contact well.
HVPS.
5. Check the contamination fo transfer 5. Relpace Transfer Roller
roller.
Vertical Black Streak 1. OPC Drum scar 1. Clean OPC Drum
and band 2. OPC Drum damage 2. Replace image cartridge
Vertical White Streak
1. Contamination of LSU window 1. Clean LSU window
2. If not improved,
replace image cartridge
1. OPC Drum scar or particle 1. Clean OPC Drum & roller
2. Heat roller scar or particle 2. Cleaning heat roller
3. Develope roller scar or particle 3. Clean the develope roller.
Partial Black Image If not improved,
(periodic) replace image cartridge.
4. Charge roller scar or particle 4. Clean the charge roller.
If not improved,
replace image cartridge.
Partial White Image 1. OPC Drum scar or particle 1. Clean OPC Drum
(not periodic) 2. Check the cartridge life 2. Replace image cartridge
Download Service Manual And Resetter Printer at http://printer1.blogspot.com