Amp Bias Adjustment - Harman Kardon AVR 160 Service Manual

harman/kardon
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
25.9mV
- +
CN66 CN61
VR86 VR85
DC VOLTMETER ; Connect to
CN66(SL),CN61(CEN),CN64(SR),CN63(FL),CN65(SBL),CN62(FR),CN67(SBR)
NO.
1 Front Left
2 Front Right
3
4 Surround Left
5 Surround Right
6 Surround Back Left
7 Surround Back Right
CUP12170 (MAIN PCB)
CN64
VR82
VR84
Channel
Center
CN63 CN65
VR83 VR87
Adjust for
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
AVR 160/230 Service Manual
CN62 CN67
VR81
Adjustment
CN63
CN62
CN61
CN66
CN64
CN65
CN67
106 of 116