Read Harman Kardon AVR 141 (serv.man4) Service Manual online
AMPLIFIER SECTION BIAS ADJUSTMENT
Model
: AVR139/230, AVR141/230, AVR142/230
Date 2009.04.28
Rated voltage
: AC 230V 50 Hz
JM.Kang
Measurement condition : No input signal or volume position is minimum.
Standard value
: 1) Ideal current
: 48mA (± 5%)
2) Ideal DC Voltage : 25.92mV (± 5%)
* CUP12186Z ( MAIN PCB )
No.
Channel
Adjust
Adjustment
1
FR-CH
25.92mV (± 5%)
CN66
2
CNT-CH
25.92mV (± 5%)
CN61
3
SR-CH
25.92mV (± 5%)
CN64
4
FL-CH
25.92mV (± 5%)
CN63
5
SL-CH
25.92mV (± 5%)
CN62
FR-CH
CNT-CH
SR-CH
FL-CH
SL-CH
VR86
VR85
VR84
VR82
VR87
CN66
CN61
CN64
CN63
CN62
VR ADJUST
+
-
DV
harman/kardon
AVR 139-141-142/230 Service Manual
Page 76 of 83
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