Circuit Description - Pioneer M-10X Service Manual

7.2 CIRCUIT DESCRIPTION

Use a wide range linear circuit of A-607R series
for voltage stage, and use HEX POWER MOS-
FET for output stage.
This circuitry eliminates source resistance, and reduce
power loss in large amount with super low capacity
resistor of output stage device and realize the low
generation of heat, low source voltage.
This circuitry eliminates source resistance and listing
electric coil, and achieve the damping factor that is flat
with band (20Hz - 20kHz).
8. PANEL FACILITIES AND SPECIFICATIONS
PANEL FACILITIES
2
STANDBY/ON
POWER
OFF ON
1
—
1
Main power ( OFF/
If the button is OFF (—), the power of the amplifier is shut
off and the STANDBY/ON button on the amplifier does not
function.
Pressing the main power button will turn the amplifier ON
(_).
2
STANDBY/ON button
Press to switch the amplifier ON or into STANDBY mode.
3
STANDBY indicator
Lights when the amplifier is in STANDBY mode. (Please
note that this amplifier consumes a small amount of
power (1 W) during the standby mode.)
4
POWER indicator
Lights when the power is switched on.
(The illustration shows the KU/CA type.)
3
v¿,?m
Î
STEREO POWER AMPLIFIER
STANDBY
REFERENCE STEREO POWER AMPLIFIER
_
ON ) button
4
NOTE:
The protection function will operate in case of internal amplifier
malfunction or in case of external causes such as static electric-
ity or speaker terminal short circuits. When the protection func-
tion operates, the POWER indicator flashes, and the unit goes
out into standby mode.
If this occurs, check the speaker terminals and speaker cords to
make sure they are not shorted, then press the STANDBY/ON
button to turn on the unit.
If the protection function then operates again, unplug the power
cord and contact a service center.
M-10X
+B1
+B2
–B2
–B1
21