Optimus STA-7500 - Page 5

BUILT-IN PROTECTION CIRCUITS
Your receiver has two special protection circuits:
¢ The thermal overload protection circuit automat-
ically turns off the receiver’s amplifier if it
overheats.
¢ The overdrive protection circuit automatically
turns off the amplifier if too much power is being
drawn from it.
If a protection circuit turns off the amplifier, the
PROTECTION indicator comes on.
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MONG AUTO
L PROTECTION] SLEEP
If this happens, press POWER to turn off the re-
ceiver’s power. Then check for proper ventilation
and proper speaker connections.
Note: Any speakers you connect to the receiver
must have an impedance of 8 to 16 ohms.
The protection circuits usually reset in only a few
minutes, so you can turn on and use the receiver
again. The circuits seldom take longer than 30
minutes to reset.