Amp Bias Adjustment - Harman Kardon AVR 3550HD Service Manual

7 x 75w 7.1 channel
Hide thumbs Also See for AVR 3550HD:
Table of Contents

Advertisement

AVR3550HD
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
VR81
VR82
DC VOLTMETER ; Connect to
CN66(SL),CN61(CEN),CN64(SR),CN63(FL),CN65(SBL),CN62(FR),CN67(SBR)
NO.
1
2
3
4
5
6
Surround Back Left
7
Surround Back Right
CUP12026 (MAIN PCB)
CN61
CN64
VR84
VR83
Channel
Front Left
Front Right
Center
Surround Left
Surround Right
CN63
CN65
VR85
VR86
Adjust for
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
28
CN62
CN67
VR87
Adjustment
CN63
CN62
CN61
CN66
CN64
CN65
CN67
harman/kardon

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents