Error codes Error message Solution
12.11, 12.21, 12.31, 12.41 Change <source/> to <type/>
<size/>.
Open the indicated tray, remove
paper, and then load the correct
paper type and size. For more
information, see
“Loading trays” on
page 28.
12.12, 12.22, 12.32, 12.42 Change <source/> to <type/>
<size/> <orientation/>.
12.91 Change multipurpose feeder
to <type/> <size/>.
Remove paper, and then load the
correct paper type and size. For more
information, see
“Loading the
multipurpose feeder” on page 29.
12.92 Change multipurpose feeder
to <type/> <size/>
<orientation/>.
29.08 Remove packing material.
1 Open door A.
2 Remove the toner cartridge.
3 Remove the imaging unit.
4 Remove the packing material.
Warning—Potential
Damage: Do not expose the
photoconductor unit to direct
light for more than 10 minutes.
Extended exposure to light may
cause print quality problems.
Warning—Potential
Damage: Do not touch the shiny
photoconductor drum under the
imaging unit. Doing so may
aect the quality of future print
jobs.
5 Insert the imaging unit.
6 Insert the toner cartridge.
7 Close door A.
8 Remove all trays, and then
remove all packing materials.
9 Insert all trays.
31.40z Reinstall missing or unresponsive
cartridge.
1 Open door A.
2 Remove the toner cartridge.
3 Insert the toner cartridge.
4 Close door A.
Troubleshoot a problem 125