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4.11 Troubleshooting for Other Problems
4.11.1 Cannot print
4.11.2 Cannot update firmware
4.11.3 USB direct interface errors
<User Check>
- Turn the power switch OFF and then ON again.
- Check that the USB cable is connected to the host correctly.
- Check that the LAN cable is connected to the host correctly.
- Replace the USB cable.
- Replace the LAN cable.
- Check that the maximum printable page number has not been exceeded.
- Check that the PC Print is not forbidden.
- Check the print limit ID.
- Check the network connection.
- Check the relevant section in the Network Setting Guide.
- Check that the print data is not damaged.
- Install the latest main firmware.
- Match the document size with the one specified in the driver.
Step
Cause
Remedy
1
Connection failure of the wireless
LAN connector
Reconnect the wireless LAN connector.
2
Wireless LAN PCB failure
Replace the wireless LAN PCB.
3
Main PCB failure
Replace the main PCB ASSY.
<User Check>
- Make sure that there is no other function running.
- Turn the power switch OFF and then ON again.
Step
Cause
Remedy
1
Firmware version does not match
Reinstall the latest sub firmware and main
firmware in this order.
2
Main PCB failure
Replace the main PCB ASSY.
<User Check>
- Replace the USB flash memory.
- Check that the extension of data in the USB flash memory is correct.
Step
Cause
Remedy
1
USB host circuit failure
Replace the main PCB ASSY.