Dell 1135N Service Manual page 108

7) Uneven Density
Description : Print Density is uneven between left and right.
on the left and right springs of the
transfer roller is not even, the springs are
damaged, the transfer roller is improperly
installed, or the transfer roller
2. The life of the Toner cartridge
3. The toner level is not even on
the toner cartridge roller due to the
Service Manual
Alignment and Troubleshooting
1. The pressure force
bushing or holder is
damaged.
has expired.
bad blade.
4-35
Replace both the left and right
Spring Holder.
Occur in the toner cartridge gently
shake the toner cartridge.
Replace the toner cartridge and
try to print out.