Uneven Density - Samsung SCX-4216F Service Manual

7.3.7 Uneven Density

• Description Print density is uneven between left and right.
1. The pressure force on the left and right
2. The life of the Developer has expired.
3. The toner level is not even on the devel-
7.3.8 Background
• Description Light dark background appears in whole area of the printing.
Digital Printer
1. Recycled recording paper has been
Digital Printer
Digital Printer
2. The life of the Developer has expired.
Digital Printer
Digital Printer
3. The up-to-down movement of the trans-
4. The HVPS is normal?
Samsung Electronics
Check and Cause
springs of the transfer roller is not even,
the springs are damaged, the transfer
roller is improperly installed, or the trans-
fer roller bushing or holder is damaged.
oper roller due to the bad blade.
Check and Cause
used.
fer roller is swift?
(Perform Engine Test Mode diagnostic
code 4)
TROUBLESHOOTING
Solution
1. Replace both the left and right Spring
Holder.
2. Problem with the toner cartridge, replace
the toner cartridge and try to print out.
Solution
1. Quality is not guaranteed when using recy-
cled paper.
2. Replace the toner cartridge.
3. Clean the busing on the transfer roller.
4. Replace the HVPS.
Service Manual
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