LCD display
|
Symptom
|
Cause and Remedy
|
OVERLOAD
|
Speaker short, amplifier failure
|
Speaker short and failure in power amplifier, pre-amplifier circuits. Check for faulty parts and replace with new parts if necessary.
|
Humidity protection activated
|
FANLOCK
|
The fan stops suddenly.
|
Failure in fan or fan control circuits. Check for faulty parts and replace with new parts if necessary.
|
F70
|
Communication error between sub micro processor and its peripheral LSI
|
Failure sub-micro processor and its peripherals LSI. Check for faulty parts and replace with new parts if necessary.
|
F76
|
When the power is turned on, the unit power automatically turns off; the power cannot be turned on.
|
Failure in the power circuit system of the unit. This may happen when the direct current electricity is supplied to speaker terminals. Check for the above and replace with new parts if necessary.
|