Read Harman Kardon AVR 2550 (serv.man6) Service Manual online
AMPLIFIER SECTION BIAS ADJUSTMENT
CUP11517X (MAIN PCB)
Measurement condition
. No input signal or volume position is minimum.
Standard value.
. Ideal current = 48mA (
±
5%)
. Ideal DC Voltage = 21.12mV (
±
5%)
DC VOLTMETER..............Connect to CN61, CN62, CN63, CN64, CN65
NO.
Channel
Adjust for
Adjustment
1
Front Left
21.12mV (±5%)
VR61
CN61
VR61
2
Front Right
21.12mV (±5%)
21.12mV (±5%)
21.12mV (±5%)
21.12mV (±5%)
VR62
CN62
VR62
3
Center
VR63
CN63
VR63
4
Surround Left
VR64
CN64
VR64
5
Surround Right
VR65
VR65
CN65
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