Action
Yes
No
Step 1
a
Check if the printer is using a genuine and supported toner
cartridge.
Note:
If the toner cartridge is not supported, then install a
supported one.
b
Print the document.
Do vertical dark lines or streaks appear on prints?
Go to step 2.
The problem is
solved.
Step 2
a
Remove, and then insert the imaging unit.
Warning—Potential Damage:
Do not expose the imaging unit
to direct light for more than 10 minutes. Extended exposure
to light can cause print quality problems.
Warning—Potential Damage:
Do not touch the
photoconductor drum under the imaging unit. Doing so may
affect the quality of future print jobs.
b
Print the document.
Do vertical dark lines or streaks appear on prints?
Go to step 3.
The problem is
solved.
Step 3
a
Replace the imaging unit.
b
Print the document.
Do vertical dark lines or streaks appear on prints?
Contact your
. The problem is
solved.
Vertical dark streaks with print missing
.
Troubleshooting
161
Summary of Contents for MX-B557P
Page 1: ...LASER PRINTER MX B557P MX B707P User s Guide October 2021 Machine type 4064 Models 29H 69H ...
Page 109: ...2 Unlock the fuser 3 Remove the used fuser 4 Unpack the new fuser Maintaining the printer 109 ...
Page 114: ...3 Remove the used hot roll fuser wiper Maintaining the printer 114 ...
Page 120: ...2 Remove the used pick roller 3 Unpack the new pick roller Maintaining the printer 120 ...
Page 121: ...4 Install the new pick roller 5 Close the multipurpose feeder Maintaining the printer 121 ...
Page 142: ...2 Remove the staple cartridge holder 3 Remove the loose staples Clearing jams 142 ...
Page 193: ...b Insert the tabs of the guide bar into the output expander Upgrading and migrating 193 ...
