Samsung ML-651x series Service Manual page 235

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
even on the imaging unit roller due to
Service Manual
ML-551x / 651x series
4. Alignment and Troubleshooting
1. The pressure force
installed, or the transfer roller
bushing or holder is
damaged.
2. The toner level is not
the bad blade.
Replace both the left and right
Spring Holder.
Occur in the imaging unit,
replace the
print out.
4-140
Developer and try to
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