Denon AVR-791 Service Manual

31
ADJUSTMENT
Audio Section
Idling Current
Required measurement equipment: DC Voltmeter
1. Preparation
(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room temperature
15 °C ~ 30 °C (59 °F ~ 86 °F).
(2) Presetting
• POWER(Powersourceswitch) STANDBY
• SPEAKER(Speakerterminal) Noload
(Donotconnectspeaker,dummyresistor,etc.)
2. Adjustment
(1) RemovetopcoverandsetVR401,VR402,VR403,VR404,VR405,VR406,VR407on7CHAMPUNITatfully
counterclockwise(
c
) position.
(2) ConnectDCVoltmetertotestpoints(FRONT-Lch:TP401,FRONT-Rch:TP402,CENTERch:TP403,SURROUND-
Lch:TP404,SURROUND-Rch:TP405,SURROUND-BACKLch:TP406,SURROUND-BACKRch:TP407.
(3) ConnectpowercordtoACLine,andturnpowerswitch"ON".
(4) Presetting.
MASTERVOLUME :"---"counterclockwise(
c
min.)
SPEAKER(Speakerterminal) :Noload
(Donotconnectspeaker,dummyresistor,etc.)
MODE :MCHSTEREO
FUNCTION :DVD
(5) Within2minutesafterthepoweron,turnVR401clockwise(
x
)toadjusttheTESTPOINTvoltageto
1.5 mV ± 0.5 mV DC.
(6) After 10 minutes from the preset above, turn VR401 to set the voltage to 2.0 mV ± 0.5 mV DC.
(7) AdjusttheVariableResistorsofotherchannelsinthesameway.
7CH AMP UNIT
DC Voltmeter
F Lch
S Lch
F Rch
C ch
S Rch
S Back Lch
S Back Rch
TP401
VR404
TP404
VR403
VR405
TP405
VR402
TP402
VR407
TP406
VR401
VR406
TP403
TP407

Denon AVR-791 Specifications

General

Number of Channels	7.1
HDMI Inputs	4
HDMI Outputs	1
Audyssey Technologies	Audyssey MultEQ, Audyssey Dynamic Volume, Audyssey Dynamic EQ
4K Pass-Through	No
Signal-To-Noise Ratio	100 dB
HDMI Switching	Yes
Input Sensitivity	200 mV
THD	0.08%
Surround Sound Effects	Yes
Digital Sound Processor (DSP)	Yes
DSP Preset Qty	7
Tuner Bands	AM/FM
Preset Station Qty	56
Auto Preset Memory	Yes
HDMI Pass-Through	Yes
Frequency Response	10Hz-100kHz
Power Output	90 W per channel (8 ohms, 20Hz-20kHz, 0.08% THD)
Dolby Technologies	Dolby Digital Plus, Dolby TrueHD
DTS Technologies	DTS, DTS-HD Master Audio, DTS-HD High Resolution Audio, DTS Neo:6
Response Bandwidth	10 - 100000 Hz
Input Impedance	47 kΩ
Audio D/A Converter	24-bit / 192kHz
DSP Presets	Rock Arena, Jazz Club, Mono Movie, Matrix, Virtual, Game
Tuning Range	AM: 520 - 1710 kHz, FM: 87.5 - 108 MHz
Connector Type	HDMI
Amplifier Output Details	90W x 7 (8 ohms, 20Hz-20kHz, 0.08% THD)
Video Conversion	Yes (Composite to HDMI)