Harman Kardon AVR 2550 Service Manual

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

Harman Kardon AVR 2550 Specifications

Audio Specifications

continuous average power (stereo mode)	50 watts per channel into 8 ohms @ 20Hz – 20kHz, <0.07% THD, both channels driven
continuous average power (five-channel surround mode)	40 watts per channel into 8 ohms @ 20Hz – 20kHz, <0.07% THD, all channels driven
high instantaneous current capability (HCC)	±25 amps

Tuner Specifications

usable sensitivity	IHF 1.3µV/13.2dBf
THD at 1kHz with 100% modulation (mono)	0.15%
THD at 1kHz with 100% modulation (stereo)	0.3%

Weight and Dimensions

dimensions (H x W x D)	165mm x 440mm x 365mm
weight	10.8 kg