Brother FAX-2840 Service Manual page 95

Error code ED and EE
These errors do not usually occur in the normal use. The conceivable causes are noise
around the installation site, fluctuation of the power supply voltage, and failures in the
software.
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An unidentified error occurred.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Error code EF
Print Unable EF
Turn the power off and then back on again.
Unstable power supply was detected.
Step
Irregular power supply detected Replace the low voltage power supply PCB
1
2 Main PCB failure
CAUTION:
• The irregular power supply detection error (error code EF) 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.
Error code F0
Print Unable
Turn the power off and then back on again.
Malfunction of the flash memory on the main PCB
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Malfunction of firmware
2 Main PCB failure
Cause
Replace the main PCB ASSY.
Cause
ASSY. Reset the irregular power supply
detection counter following the procedure
described in
VOLTAGE POWER SUPPLY PCB ASSY" in
Chapter
Replace the main PCB ASSY.
Cause
Rewrite the latest firmware.
Replace the main PCB ASSY.
2-58
Remedy
Remedy
"3. IF YOU REPLACE THE LOW
4.
Remedy
Confidential