Action Yes No
Step 4
a From the control panel home screen, go to Settings > Reports
> Device > Device statistics.
b Check if the install date reflects the date you replaced the
cartridge.
c Check the supply level and capacity of the toner cartridge.
d Check the supply level and capacity of the imaging unit.
Is there sucent supply level, and does the install date reflect the
cartridge replacement date?
Go to step 5. Go to step 7.
Step 5
Check the cables for proper connection and damage.
Are the cables properly connected and free of damage?
Go to step 7. Go to step 6.
Step 6
Replace only the damaged cable.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
a Reseat all the cables on the controller board.
b Check if the controller board LED lights up.
c Check the controller board for proper installation and damage.
Is the controller board properly installed and free of damage?
Contact the next
level of support.
Go to step 8.
Step 8
Replace the controller board. See
“Controller board removal” on
page 228.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
55 user attendance messages
55 user attendance messages
Error code Description Action
55.1 Unsupported USB device. See
“Unsupported USB device service check”
on page 131.
55.2 Unsupported USB hub.
3400-48x
Diagnostics and troubleshooting
130
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