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AMPLIFIER SECTION BIAS ADJUSTMENT
Measurement condition
.No input signal or volume position is minium.
.Do not adjust at FM/AM.
.No input signal or volume position is minium.
.Do not adjust at FM/AM.
Standard value
.Ideal current = 48mA (±7%)
.Ideal DC Voltage = 22.5mA (±7%)
.Ideal current = 48mA (±7%)
.Ideal DC Voltage = 22.5mA (±7%)
( AMP PCB )
CN51
CN41
DC VOLTMETER : Connect to
CN51 ( L-CH), CN41 ( R-CH)
CN51 ( L-CH), CN41 ( R-CH)
No.
Channel
Adjust for
Adjust
1
Left
22.5mV(±7%)
CN51
2
Right
22.5mV(±7%)
CN41
VR203
VR204
Harman Kardon
HK 3770 Service Manual
Page 14 of 120
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