2M4/2M5/2M6/2M7
1-4-9
F040
Communication Error
between Main PCB and
Engine PCB
Communication is failed
between the controller and the
engine.
Defective main
PWB.
Turn the main power switch off/on to restart
the machine. If the error is not resolved,
replace main PWB (see page 1-5-18).
F050 No Engine Main Program
Engine program failure.
Defective engine
software.
Install the engine software.
Defective main
PWB.
Turn the main power switch off/on to restart
the machine. If the error is not resolved,
replace main PWB (see page 1-5-18).
Code Contents Causes
Check procedures/
corrective measures
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