Onkyo TA-RW255 - Bias Dac; Level Meter

HA12167FB/HA12169FB
27
BIAS DAC
The full-scale of DAC is computed by the formula mentioned below.
29
14 to 16
10
V
2.4
R
R
V=×
[]
32
14 to 16
13
V
2.4
R
R
V=×
[]
R
14
: Normal Tape (pin 35)
R
15
: Metal Tape (pin 36)
R
16
: Chrome Tape (pin 37)
The maximum source current of DAC output (pin 29, 32) is 2 mA. Therefor the Bias-osc is drived through
external transisitor of emitter-follower.
Level Meter
The coupling capacitor of LMIN pin (9 pin and 52 pin).
For these capacitors, please employ a small object of the leak.