Check the “Transmission Results” in the Transmission Report - Job Undelivered and take an appropriate action.

If an error code is displayed, refer to Error Code Search in our official website to take action to resolve the error.

The machine is equipped with multiple connectors to which to connect phone lines. Communication is enabled only when the phone line is connected to the correct connector. When the cable connection is correct, the On-hook feature allows you to call via general lines.

Use a telephone near the machine to check whether you can make a phone call. If the phone call is disabled, the problem is in the phone line, not in the machine.

Confirm whether the connection device such as the terminal adapter or ONU is turned on.

Match the line type set for this machine to the line type (PB/10 pps/20 pps) subscribed for the machine.

The data cannot be sent if the fax machine of the recipient is turned off, is set to manual receiving mode, or does not support G3 reception. Paper might have run out or the memory might be full on the recipient’s machine. Call the recipient to confirm the machine condition.

Check the fax number and try sending it again.

You cannot use “*” and “#” with fax numbers when using G3 DP (Dial Pulse).

When calling from an extension line, the external access number is required. When dialing, dial the external access number such as “0”, and then dial the fax number. When the switchboard is changed and you cannot send faxes by dialing the external access number “0”, try the external access number “0*”.

In the case that you specified a recipient from the address book and appended the external access number when calling, it is possible that the external access number “0” has already been registered to the recipient’s number listed in the address book. Confirm the telephone number of the recipient on the Transmission Report - Job Undelivered.

The document data is too large in size.

Lower the resolution to reduce the data size or send the document in several pieces.

The document is too large in size.

Change the size to the readable size or send the document in small segments.

When using a feature such as the Polling feature, confirm whether the destination fax supports the feature.

When the Authentication/Accounting feature is used and you send a fax directly from the computer, set the correct user ID and passcode registered on the machine to the fax driver.

Additional services for Lines 1 to 3 are not set correctly. Check the line contract (caller ID display and Dial-In) concluded with your telephone company and configure settings.

The machine cannot receive a fax when switched off. Switch the machine power on.

The machine cannot print received documents when no paper is set.

Paper is jammed. Follow the instructions displayed on the Control Panel to remove the jammed paper.

The machine cannot receive a fax in Administrator Mode. Exit Administrator Mode.

When a reception password has been set, the machine accepts only data or polling fax sent with the correct reception password in F code.

The machine is in manual receiving mode. Cancel the manual reception, or set the fax receiving mode to automatic receiving.

To use the fax information service, set the receiving mode to the manual receiving mode on the on-hook or off-hook screen, enter an information code, and then tap on [Start].

The document is not loaded correctly on the sender’s machine. Check the machine condition with the sender.

During communication, errors may be caused by a problem with the sender’s machine, not just by a problem of the machine.

Set a correct IP address, subnet mask, and gateway address in the machine.

Set a correct SIP address in the machine.

Set a correct IP address of the SIP server in the machine.

Confirm with your network administrator whether the SIP server is operating correctly.

Registration of the machine information to a SIP server has failed.

Switch the machine power off and then on.

The data cannot be sent if the IP fax (SIP) machine of the recipient is turned off. Check the machine condition with the recipient.

The method for specifying the recipient is incorrect. Specify the following recipient information.

When using a feature such as the Polling feature, confirm whether the destination fax supports the feature.

When the Authentication/Accounting feature is used and you send a fax directly from the computer, set the correct user ID and passcode registered on the machine to the fax driver.

The number of simultaneous connections for IP fax (SIP) is one. The machine cannot send and receive at the same time.

Enable the port for IP fax (SIP) of the network relay device (such as a switch, router, and firewall).

If the reception IP address has been limited on the machine in the environment where the SIP server is used, add the IP address of the SIP server to the reception IP address.

If the Ethernet cable has been unplugged for more than one minute, the registration succeeds when Register recovery on the SIP server is completed. No measure is required.

The machine cannot receive a fax when switched off. Switch the machine power on.

The machine cannot receive a fax in the Administrator Mode. Exit the Administrator Mode.

When a reception password has been set, the machine accepts only data or polling fax sent with the correct reception password in F code.

Register the correct VoIP gateway on the machine.

Confirm with your network administrator whether the VoIP gateway is working properly.

Confirm with your network administrator whether the VoIP gateway settings are correct.

The destination G3 fax machine is not working properly. The data cannot be sent if the G3 fax machine of the recipient is turned off. Call the recipient to confirm the machine condition.

Increase the value for [Prioritize IP Packets] of the machine according to your network environment.

A large amount of communication data loss occurs because the queue (buffer) assigned to each QoS of the network relay device (such as a switch and router) is low.

Set an appropriate parameter on the network relay device for your network environment.

A large amount of communication data loss occurs because the communication rates differ within the network.

Use the same communication rate within the network.

A large amount of communication data loss occurs because the communication parameters (such as input gain, output attenuation, echo setting) of the VoIP gateway are inappropriate for the network environment.

Set appropriate parameters on the VoIP gateway for your network environment.

IP fax (SIP) machine is connected to the data network if the telephone and data networks are operated separately. Configure the QoS setting for the entire network environment and control traffic. Set [Prioritize IP Packets] for QoS of the machine.

Decrease the value for [Prioritize IP Packets] of the machine according to your network environment.

IP fax (SIP) machine is connected to the voice network if the telephone and data networks are operated separately. Configure the QoS setting for the entire network environment and control traffic. Set [Prioritize IP Packets] for QoS of the machine.

The document glass of the sender’s machine is dirty, or the resolution setting on the sender’s machine is set to low.

Check the machine condition with the sender.

During communication, image quality errors may be caused by a problem with the sender’s machine, not just by a problem of the machine.

If the image quality is poor after printing, refer to Image Quality Trouble.

The drum cartridge is damaged.

Copy a document. If the image quality is poor, replace the drum cartridge with a new one.

You can set the machine to process the received documents by using a combination of the Auto Reduce on Receipt feature and a border limit value for page splitting.

According to the setting combination specified, the received document is printed as follows.

An unregistered folder is selected on the Folder Selector feature. Select a registered folder.