2KR/2KS
1-4-47
F090 Fax control PWB communication
error
Defective main
PWB.
Replace the main PWB and check for cor-
rect operation.
F278 Power supply in drive system error Main power switch
was turned off with-
out using the
power key, or a
power failure has
occurred.
Turn on power.
(To switch off power, first press the power
key until the main power indicator goes off,
then turn the main power switch off.)
Code Contents
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Causes Check procedures/corrective measures
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