Amplifier Section Bias Adjustment - Harman Kardon AVR245 Service Manual

AVR245

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
-
+
CN66
VR31 VR32
DC VOLTMETER ; Connect to
CN66(SL),CN61(CEN),CN64(SR),CN63(FL),CN65(SBL/SL(AVR132,144,145)),CN62(FR),CN67(SBR)
NO.
1
2
3
4
5
6 Surround Back Left
7 Surround Back Right
CUP11911Y (MAIN PCB)
CN61 CN64
VR34
VR33
Channel
Front Left
Front Right
Center
Surround Left
Surround Right
CN63 CN65
VR35 VR36
Adjust for
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
40
CN62 CN67
VR37
Adjustment
CN63
CN62
CN61
CN66
CN64
CN65
CN67
harman/kardon