Denon AVR-1912 Service Manual

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YES
YES
YES
YES
Check operation of IC12(ADV7511)
Check operation of IC9(ADV7623)
(10) Check RESET.
Is RESET waveform conrmed in IC12 (38pin), when the power
is turned on? (If the waveform is not the reference waveform,
proceed to NO.)
(14) Check RESET.
Is RESET waveform conrmed in IC9 (97pin), when the power
is turned on? (If the waveform is not the reference waveform,
proceed to NO.)
(9) Check power supply.
Are 1.8V or 3.3V supplied to IC12(each power supply pin)?
(12) Check power supply.
Are 1.8V or 3.3V supplied to IC9(each power supply pin)?
The power supply circuitry is defective.
The power supply circuitry is defective.
The RESET circuitry (Q22 and surrounding
circuitry) or IC12 is defective.
The RESET circuitry (Q18 and surrounding
circuitry) or IC9 is defective.
NO
NO
NO
NO
YES
(11) Check output signal.
Is TMDS waveform conrmed at IC9(112pin/113pin/115pin/116pi
n/118pin/119pin/121pin/122pin).
(If the waveform is not the reference waveform, proceed to NO.)
The IC12 is defective.
NO
(13) Check xtal oscillator.
Is oscillation of XTAL1(28.6363MHz) transmitted?
The XTAL1 or IC9 is defective.
NO
YES
The pattern and circuit from the HDMI connector (JACK6) to the
IC(IC9) are defective, or HDMI output circuitry is defective (IC9 and
surrounding circuitry).
(8) Check the input signal
Is each waveform conrmed with the following terminal of IC12?
2pin : 1TXVSYNC
79pin : 1TXPCK
97pin : 1TXDE
98pin : 1TXHSYNC
(If the waveform is not the reference waveform, proceed to NO.)
YES
The U4 is defective.
NO

Denon AVR-1912 Specifications

General

Impedance	47 Ω
Receiver type	Surround
Frequency range	10 - 100000 Hz
Input sensitivity	200 mV
Audio output channels	7.1 channels
Audio A/D Converter (ADC)	24-bit/96kHz
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.08 %
Power output per channel (1KHz@6 Ohm)	125 W
Power output per channel (20-20KHz@8 Ohm)	90 W
HDMI in	6
Composite video in	3
Component video (YPbPr/YCbCr) in	1
Headphone connectivity	6.3 mm
Connectivity technology	Wired
Speakers connectivity type	Banana connector/Binding posts
Audio formats supported	AAC, FLAC, MP3, WAV, WMA
Image formats supported	JPG
Wi-Fi	No
Ethernet LAN	Yes
AM band range	520 - 1710 kHz
FM band range	87.5 - 107.9 MHz
Supported radio bands	AM, FM
Preset stations quantity	56
Supported video modes	1080i, 1080p, 480i, 480p, 576i, 576p, 720p
Analog signal format system	NTSC, PAL
Display	-
Product color	Black
Audio decoders	Dolby Digital EX, Dolby Digital Plus, Dolby Pro Logic II, Dolby Pro Logic IIx, Dolby Pro Logic IIz, Dolby TrueHD, DTS 96/24, DTS Neo:6, DTS-ES, DTS-ES (Discrete 6.1), DTS-ES (Matrix 6.1), DTS-HD
Apple docking compatibility	iPhone, iPod
AC input voltage	120 V
AC input frequency	60 Hz
Power consumption (standby)	0.1 W
Power consumption (typical)	460 W

Weight and Dimensions

Depth	382 mm
Width	435 mm
Height	167 mm
Weight	10200 g