Action Yes No
Step 14
a Reinstall the memory.
b Perform a print job.
Does the problem remain?
Go to step 15. Go to step 16.
Step 15
a Install a Lexmark‑recommended optional memory.
b Perform a print job.
Does the problem remain?
Go to step 31. The problem is
solved.
Step 16
Verify if a modem is installed.
Is a modem installed?
Go to step 17. Go to step 21.
Step 17
a Reinstall the modem.
b Reset the printer.
Does the problem remain?
Go to step 18. Go to step 20.
Step 18
a Upgrade the firmware if it was not upgraded in a previous step.
Note: Contact your next level of support for the correct
firmware
level to use.
b Reset the printer.
c Perform a print job.
Does the problem remain?
Go to step 19. The problem is
solved.
Step 19
a Replace the modem.
b Reset the printer.
Does the problem remain?
Go to step 31. The problem is
solved.
Step 20
Perform a fax job.
Does the problem remain?
Go to step 31. Go to step 21.
Step 21
Verify if an optional ISP is installed.
Is an optional ISP installed?
Go to step 22. The problem is
solved.
3400-48x
Diagnostics and troubleshooting
163
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