Service manual

(47uF) through R69 (100k) and the release by the discharge if C4 through R92 (2k2). The other channels
operate in a similar manner. Note that VCA will mute at 250mV (-80dB) below the reference voltage so the
muting will occur only over the range of approximately (depends on VCA production batch) 7.2V to 7.5V.
The charging of the capacitor occurs from approximately 1V to 8.1V.
VCA M5222P pin out
1 – Output1
2 – Input1
3 – Reference voltage (½ Vcc)
4 – Gnd
5 – Control
6 – Input2
7 – Output2
Note: The M5222P is a current in, current out device. Voltage conversion is done through resistors. The
maximum input current is 50uA rms. Current gain is 0.5.
Fuse Sizes
(240V version)
Mains: 230 VAC 3.15 Amperes Slow Blow
DC: 10 Amperes Slow Blow
(115V version)
Mains: 230 VAC 4 Amperes Slow Blow
DC: 10 Amperes Slow Blow