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Denon AVR-S750H Service Manual

Denon AVR-S750H
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IDLING CURRENT CHECK for E3, E1C, S750 model
Checking Idling Current
NOTEChecking the idling current when "ECO Mode" is set may damage the Power AMP.
1. Preparation
(1) Prepare a DC voltmeter.
(2) Place the unit under normal usage conditions, away from highly ventilated areas such as next to an
air conditioning machine or electric fan.
The set requires an ambient temperature of 15℃ to 30℃ and standard humidity.
(3) Settings of This Unit
POWER (Power source switch) STANDBY
SPEAKER (Speaker terminal) No load
(Do not connect equipment such as speakers or dummy resistors.)
2. Adjustment Procedure
(1) Make sure that "ECO Mode" is off.
Press the "
SETUP
" button on the remote control to display the GUI menu.
Press the cursor button to select "General" → "ECO" → "Mode" → "Off".
(2) Remove the top cover and turn VR510 (ALL Channel) of the MAIN PCB counterclockwise(
c
) as far as
possible.
(3) Connect the DC Voltmeter to the test points.
FRONT-Lch : CN510
FRONT-Rch : CN550
CENTER ch : CN530
SURROUND-Lch : CN520
SURROUND-Rch : CN540
SURROUND-BACK Lch : CN560
SURROUND-BACK Rch : CN570
(4) Connect the power cord to an outlet. Next, press the power button to turn on the power.
(5) Set this unit as follows.
MASTER VOLUME : "---" (
c
min.) : turn counterclockwise to the lowest position.
SPEAKER (Speaker terminal) : No load
(Do not connect equipment such as speakers or dummy resistors.)
MODE : MCH STEREO
FUNCTION : TUNER
(6) Wait 10 minutes after turning on the power and check that the voltage becomes "2.0mV ± 0.5mV
DC".
(7) Use the same method to check the voltage of each channel.
F Rch S Rch C Rch S Lch F Lch S Back Rch S Back Lch
SBRSBL
SL SR
CEN
FL
FR
CN550 CN540 CN530 CN520 CN510 CN570 CN560
DC Voltmeter
AMP UNIT
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
150

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Denon AVR-S750H Specifications

General IconGeneral
Receiver typestereo
Frequency range10 - 100000 Hz
Input sensitivity200 mV
Audio output channels7.2 channels
Signal-to-Noise Ratio (SNR)98 dB
Total Harmonic Distortion (THD)10 %
Power output per channel (1KHz@6 Ohm)165 W
Power output per channel (20-20KHz@8 Ohm)75 W
AirPlayYes
DisplayVFL
HDCP version2.3
Apple dockingNo
Product colorBlack
Audio decodersDTS-HD Master Audio, Dolby TrueHD
Volume controlRotary
HDMI in6
Composite video in2
Digital audio optical in1
Package depth432 mm
Package width523 mm
Package height229 mm
Package weight10614 g
AC input voltage120 V
AC input frequency60 Hz
Power consumption (standby)0.5 W
Power consumption (typical)400 W
AM band range520 - 1710 kHz
FM band range87.5 - 107.9 MHz
Supported radio bandsAM, FM
Audio formats supportedAAC, ALAC, DSD, FLAC, MP3, WAV, WMA
Image formats supportedJPEG
Speakers connectivity typeRCA
Weight and Dimensions IconWeight and Dimensions
Depth330 mm
Height152 mm
Weight8618 g

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