7
GM-X622,GM-X522
5
6
7
8
A
B
C
D
5
6
7
8
Fig. 3
A-b
A
POWER AMP
BFC
THERMO DETECTOR / PROTECTOR
OVER VOLTAGE DETECTOR / PROTECTOR
MUTE CONTROL
REGULATOR CONTROL
VR451:BASS BOOST LEVEL
VR452:BASS BOOST fc
VR453:GAIN
S451:BASS BOOST
BASS BOOST
SWITCHING
CONTROL