Amp Bias Adjustment - Harman Kardon AVR147 Service Manual

AVR147
AMPLIFIER SECTION BIAS ADJUSTMENT
Measurement condition
.No input signal or volume position is minimum.
Standard value
.Ideal current = 48mA (± 5%)
.Ideal DC Voltage = 25.92mV (± 5%)
DC EVM
+
VR32
DC VOLTMETER ; Connect to
CN61(CEN),CN64(SR),CN63(FL),CN65(SBL/SL(AVR132,144,145,146,147)),CN62(FR)
NO.
1
2 Front Right
3
4 Surround Left
5 Surround Right
CUP11911* (MAIN PCB)
-
CN61 CN64
VR34
VR33
Channel
Front Left
Center
CN63 CN65
VR35 VR36
Adjust for
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
39
CN62
Adjustment
CN63
CN62
CN61
CN65
CN64
harman/kardon