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%)
CUP11911Y (MAIN PCB)
DC VOLTMETER ; Connect to
CN66(SL),CN61(CEN),CN64(SR),CN63(FL),CN65(SBL/SL(AVR132,144,145)),CN62(FR),CN67(SBR)
CN61
CN65
Adjust for
Adjustment
25.92mV (± 5%)
CN64
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
25.92mV (± 5%)
CN63
CN62
Channel
Front Left
Front Right
Center
Surround Left
Surround Right
4
5
NO.
1
2
3
CN61
VR32
CN64
VR33
CN63
VR34
CN65
VR35
CN62
VR36
+
-
DC EVM
harman/kardon
AVR137/230 Service Manual
Page 80 of 87
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