Denon AVR-791 Service Manual

35
Input
S
B
Check power supply voltage.
FRONT CONNECTOR B'D
V+5V : CP13B-4pin
V-5V : CP13B-1pin
Check on set value of each IC.
HDMI B'D
L2706 : L(0V)
L2707 : L(0V)
L2708 : L(0V)
L2709 : L(0V)
L2710 : L(0V)
L2711 : L(0V)
Check power supply voltage.
V+5V : IC811-21pin
V-5V : IC811-16pin
Check output of video amplier.
S-Y : IC808-7pin
S-C : IC805-7pin
Check output of video amplier.
Y/C MIX : IC807-7pin
Check output of video amplier.
Y/C MIX : IC807-1pin
Check power supply voltage of
IC806 and IC808, and surrounding
circuitry soldering.
Check power supply voltage of IC8
1
0,
and check oscillation of IC810.
(X'TAL / LC oscillation)
Check power supply voltage of
IC807 and IC804, and surrounding
circuitry soldering.
Check power supply voltage of
IC807, and surrounding circuitry
soldering.
Check cable between main
unit and monitor or check
monitor.
Check power supply voltage of
IC808, and surrounding circuitry
soldering.
Check input selector(IC806).
S-Y : 13pin
S-C : 2pin
Check output of video amplier(IC805)
.
S-Y : 1pin
S-C : 7pin
Check input of selector(IC804).
Y/C MIX : 12pin
Check output of video amplier(IC808).
S-C : 1pin
Check cable between main unit and
player or check player.
Check input circuitry soldering of
OSD IC(IC810).
Extend HDMI B'D using a jig.
REGULATOR B'D aw.
HDMI B'D aw.
Check connection of FRONT
CONNECTOR BD and AV BD.
NG
NG
NG
NG NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
NG
NG
b
Unless specied, AV B'D part.
Check input of OSD IC(IC810)
.
S-Y : 15pin

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)