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fas fer,
STEREO AMPLIFIER
Instructions
Song, A=570
Operating
Thank you for buying this Pioneer product.
Please
read
through
these operating
instructions
so you
will know how to operate your model properly. After you have
finished reading the instructions, put them away in a safe
place for future reference.
In some countries or regions, the shape of the power plug and
power outlet may sometimes differ from that shown in the ex-
planatory
drawings.
However,
the method
of connecting
and operating the unit is the same.
WARNING: to prevent Fine oR SHOCK HAZARD,
LINE VOLTAGE SELECTOR SWITCH
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
Only multi-voltage
models are provided with this
switch. U.S., Canadian, European, U.K., and Australian
models are not provided with this switch.
The line voltage selector switch is on the rear panel. Before
your modei is shipped from the factory, this switch is set to
the power requirements of the destination. Check that it is
set properly
before plugging the power cord into the AC
selector, and adjust so that the tip of the arrow points
to the voltage value of your area.
{For Canadian model]
CAUTION:
to prevent eLectRic SHOCK DO NOT
VOLTAGE SELECTOR
USE THIS (POLARIZED) PLUG WITH AN EXTENSION CORD,
RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN
ATTENTION:
pour prevenin tes cHocs ELec-
TRIQUES NE PAS UTILISER CETTE FICHE POLARISEE AVEC
UN PROLONGATEUR UNE PRISE DE COURANT OU UNE
AUTRE SORTIE DE COURANT, SAUF Si LES LAMES PEUVENT
ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE
A DECOUVERT.
120v-240V
Medium size screw driver
QPIONEER'
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Do you have a question about the SA-570 and is the answer not in the manual?
Questions and answers
the Amplifier was good till it started cracking seriously more than thunder, after changing the transistor drivers, it was ok. Played on low volume for 3 days. when I increased the volume to more than half of he Volume slide, it fried out the output transistors and more.
The Pioneer SA-570 amplifier's output transistors could fail after increasing the volume due to several possible reasons:
1. Overload or Overheating – Running the amplifier at high volume for extended periods can cause excessive current draw, leading to overheating and potential failure of the output transistors.
2. Impedance Mismatch – Using speakers with an impedance lower than what the amplifier is designed to handle (e.g., below 8 ohms) can cause excessive current flow, stressing the output transistors.
3. Short Circuit in Speaker Wires – If speaker wires are frayed or touching each other, it can create a short circuit, leading to high current flow and damaging the transistors.
4. Faulty or Aged Components – Aging capacitors, resistors, or other circuit components may degrade, leading to unstable voltage regulation and increased stress on the transistors.
5. Insufficient Ventilation – If the amplifier is in an enclosed space or has blocked ventilation, heat buildup can cause components to overheat and fail.
6. Defective Bias Circuit – If the biasing circuit is faulty, the transistors may operate outside their safe range, leading to thermal runaway and failure.
To prevent failure, ensure proper speaker connections, maintain adequate ventilation, and avoid excessive volume levels for prolonged periods.
This answer is automatically generated
@Mr. Anderson thanks