Troubleshooting
Phaser 6121MFP Multifunction Printer
User Guide
186
Some parts of the image are 
lost during 2-up copying.
When printing envelopes, the scale 
was specified and then 2-up 
copying was set.
With 2-up copying, the scale is 
automatically adjusted. For 2-up 
copying on media with a narrow 
printing area, set 2-up copying and 
then adjust the scale if necessary.
The printer resets or turns off 
frequently.
The power cord is not correctly 
plugged into the outlet.
Turn off the printer, confirm that 
the power cord is correctly plugged 
into the outlet, then turn on the 
printer.
A system error occurred. Contact Technical Support with the 
error information.
The printer is making unusual 
noises.
The printer is not level. Place the printer on a flat, hard, 
level surface.
The paper tray is not installed 
correctly.
Remove the tray that you are 
printing from and reinsert it 
completely into the printer.
There is a foreign object stuck inside 
the printer.
Turn off the printer and remove the 
object. If you cannot remove it, 
contact Technical Support.
With 2-up on multiple copies, 
the output is incorrect.
Both the printer driver and the 
application have been set for 
collation.
For 2-up copying on multiple copies, 
choose Collate only in the printer 
driver’s Basic tab. Do not set 
collation in the application.
Booklet Left and Right Binding 
output is incorrect.
Both the printer driver and the 
application have been set for 
collation.
For Booklet Left Binding and 
Booklet Right Binding, choose 
Collate only in the printer driver’s 
Basic tab. Do not set collation in the 
application.
When copying or scanning with 
the auto document feeder, a 
band appears at the end of the 
image or paper (5 to 6 mm).
A malfunction may have occurred 
while paper was being transferred 
with the auto document feeder.
• If a band appears in the copy 
after copying, select a copy 
density setting that is one level 
darker.
• If a band appears in the image 
after scanning, scan using the 
document glass instead of the 
auto document feeder.
Cannot copy using the auto 
document feeder.
Envelope DL or Envelope C6 is set to 
the auto document feeder.
Place the document on the 
document glass. With the Envelope 
DL size, some areas may not be 
copied.
Scanned images are not clear. Resolution is set to 150 x 150 dpi 
while the Original Document Type is 
set to Mixed or Text.
Set the Original Document Type to 
Photo.
Symptom Cause Solution