Appendixc - Fax Problem Checklist - Oki C9850 Series Troubleshooting And Maintenance Manual

A C – F
PPENDIX
NOTE
The information codes are not displayed on-screen. Print a fax log to view the
delivery status or message codes associated with your document.
If a problem occurs, read through the list of problems and solutions before calling for
service.
The MFP will not dial a telephone number. Check the power cable and wall outlet. Make
sure that the telephone line is connected to the LINE socket on the back of the machine.
Check for a dial tone; disconnect telephone line from the MFP and connect to an external
handset. If there is no dial tone, there may be a problem with the telephone line. If there
is a dial tone, the MFP may be using the wrong dialling method (pulse or tone) for the
region. If alternating tones are heard instead of dialling pulses and the region uses pulse
dialling, change the call parameters (Refer to the Advanced User's Guide). Reconnect the
telephone line to the LINE socket on the back of the machine.
The fax log shows a communications error. This indicates any of a number of problems:
> The MFP may be incompatible with the remote machine, or the remote machine may
not be able to perform the function requested of it such as confidential faxing.
> The remote machine may also be out of paper or experiencing a paper jam.
> Bad telephone line conditions can also cause communication errors. Try sending the
fax again and check to make sure that the correct telephone number is being dialled.
> If a prefix number must be dialled to get an outside line, or if the call is to an
international destination, a pause may need to be entered after the dial prefix or
international dialling code to tell the machine to wait for a dial tone. If there are
frequent problems communicating with a particular remote machine, try
programming the telephone number into a short cut button, and then change the
parameters for that key (Refer to the Advanced User's Guide).
> Lastly, either the local or remote machine may require servicing. Try sending a fax to
another location to check the local MFP.
Faxing is possible but the image of the document printed by the remote machine
is very poor. If the faxed document has small type, complex illustrations, photos, or is
very light or very dark, try changing the fax quality and density settings (Refer to the
Advanced User's Guide). Copy the document on the machine to determine how it will
transmit. The problem may be caused by telephone line interference. Try sending the
document again later.
Fax sent but received message was completely blank. Make sure that the document
is loaded correctly before faxing; with text face UP in the ADF or face DOWN on the glass.
Image of received fax is very poor. Try making a copy of a document on the local
machine to make sure it is working properly. If there is still a problem, contact the person
sending the fax and ask them to change their fax quality and density settings. Ask the
person to make a copy of the document on their machine to ensure that it is working
properly. Then ask them to send the fax again.
Dialling was tried with a short cut button but nothing happened. Make sure that the
short cut button being used is programmed correctly.
Documents received are light or have vertical streaks on them, and MFP is not out
of toner. Gently wipe the lens surface of the MFP's LED array, and then check to see if the
machine is working properly (See
does not work properly, remove the image drum (See
maintenance items" on page
degrees vertically several times. Be careful not to let the toner leak from the cartridge. If
AX PROBLEM CHECKLIST
"Cleaning the LED heads" on page
36), tap the toner cartridge, and slowly swing it 20 to 30
Appendix C – Fax problem checklist > 61
37). If the MFP still
"Replacing consumables/