Action Yes No
Step 3
a Reseat all the scanner cables on the controller board.
b Enter the Diagnostics menu, and then navigate to:
Scanner diagnostics > Motor tests > Flatbed scanner
Did the motor run?
Go to step 6. Go to step 4.
Step 4
a Make sure that the flatbed scanner cables are properly
connected and free of damage.
b Check the flatbed scanner for proper installation and damage.
Is the flatbed scanner properly installed and free of damage?
Go to step 6. Go to step 5.
Step 5
Replace the flatbed scanner. See
“ADF scanner and flatbed
scanner removal” on page 261.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
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 7.
Step 7
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.
Other symptoms
Base printer symptoms
Symptom Action
Front door is closed or open. See
“Door switch service check” on page 178.
Tray 1 is empty. See
“Load tray 1 with A4 plain paper service check” on page 179.
Paper did not arrive in the bin. See
“Paper did not arrive in the bin service check” on page 181.
Tray insert is obstructed. See
“Tray insert obstructed service check” on page 183.
Unable to remove the toner cartridge. See
“Unable to remove toner cartridge service check” on page 183.
Fax not detected. See
“Fax not detected service check” on page 184.
3400-48x
Diagnostics and troubleshooting
177
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