instance), as this may destroy solid state devices. / After repairsare completed, restore power
gradually using a variac, to avoid overcurrent. / Current consumption at AC230V, 50Hz in NO
SIGNAL mode should be less than 300mA.
2. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
- No sound is heard when the power is turned on.
- Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and
negative speaker connection wires are “shorted”, or if speaker systems with an impedance less
than the indicated rated impedance ofthe amplifier are used. / If this occurs, follow the procedure
outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate
unless the power is first turned off and then on again.
3. Accessories
4. Handling Precautions for Traverse Deck
The laser diodes in the traverse deck (optical pickup) may break down due to potential difference
caused by static electricity of clothes or human body. / So, be careful of electrostatic breakdown
during repair of the traverse deck (optical pickup).
4.1. Handling the traverse deck / (optical pickup)
1. The traverse deck (optical pickup) is an extremely high-precision
construction and must not be subjected to impact, excessive
vibration, or other types of rough handling.
4
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