Brother MFC-8510DN, Service Manual, Page: 112 / 373

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Confidential
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Error code EE00
Detected communication failure after communication between the wireless LAN PCB and the
main PCB was established.
„ Error code EF00
The supplied power is unstable.
„
Error code F000
Malfunction of the flash memory on the main PCB
Print Unable EE
Turn the power off and then back on again.
Step Cause Remedy
1 Wireless LAN PCB failure Replace the wireless LAN PCB.
2 Main PCB failure Replace the main PCB ASSY.
Print Unable EF
Turn the power off and then back on again.
<User Check>
• Turn OFF the power switch. After several seconds, turn ON the power again and check
that this error is reset.
Step Cause Remedy
1
Low-voltage power supply PCB
failure Replace the low-voltage power supply PCB
ASSY, and then reset the irregular power
supply detection counter.
2 Main PCB failure Replace the main PCB ASSY.
CAUTION:
• The irregular power supply detection error (error code EF00) occurs when there is a
large distortion in the power supply voltage supplied to the machine. In this case, if the
same power supply is used, the same error may occur even when the low-voltage
power supply PCB ASSY is replaced. Ask the user to review the installation
environment.
Print Unable F0
Turn the power off and then back on again.
<User Check>
• Turn OFF the power switch. After several seconds, turn ON the power again and check
that this error is reset.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.