Denon AVR-S900W Service Manual

Check the USB device being used
Checking the unit (If no picture is output)
YES
YES
Is the USB device supported by this unit?
•Check the VIDEO circuit of U1026 (ADV8003) or later.
Is a USB hub being used?
Are digital video signals((920PCK, 920VD0 - 920VD7)) output from
CX870 to U1045(V.PLD)?
This unit supports devices in the FAT16 and
FAT32-formatted mass storage class, MTP-
compatible devices and iPods (with the
exception of some models).
Do not use a USB hub.
NO
YES
NO
Checking the unit
Checking the unit:(If no sound is output)
YES
YES
YES
YES
Can a voltage (5V) be conrmed between pin 1 and pin 4 of CP4406
(USB Connector) on USB PCB?
The USB signal circuit between CX870 and CP4406 of the USB PCB
are faulty.
Check the AUDIO circuit of U1024(DSP) or later.
Are CN4402 of the 870JUNCTION PCB and N7000 of the USB PCB
correctly connected?
Are I2S signal output to pin 26, 28, 30, 34 of the U1008 HDMI PCB ?
(The 30, 32, 34pin in the case of DSD)
Are audio signal output to pin 8 of U1041(A.PLD) on HDMI PCB.
The circuit around U7000 of the 870JUNC-
TION PCB is faulty.
Connect the connectors correctly.
NO
NO
5.3. A connected USB device is not recognized.
5.4. No picture or sound is output
The circuit around CX870, U1045(V.PLD) is
faulty.
The circuit around CX870 or CX870JUNCTION PCB
is faulty.
The circuit around U1041(A.PLD) is faulty.
NO
NO
NO
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Denon AVR-S900W Specifications

General

Channels	7.2
HDMI Inputs	8
HDMI Outputs	2
Wi-Fi	Yes
Bluetooth	Yes
4K Ultra HD Pass-through	Yes
Dolby Atmos	Yes
DTS:X	No
HDMI Pass-Through	Yes
Input Impedance	47 kOhm
Input Sensitivity	200 mV
THD at rated output	0.08%
Signal-To-Noise Ratio	98 dB
DAC Resolution	24-bit / 192kHz
HDMI Switching	Yes
AirPlay	Yes
DLNA	Yes
Dimensions	17.1 x 6.6 x 13.3 inches
Power Output	90 W
Response Bandwidth	10Hz-100kHz
Output Impedance / Channel	6 Ohm
Inputs	HDMI
Outputs	HDMI
Supported Audio Formats	MP3, WMA, AAC, FLAC, WAV
Supported Video Formats	4K
Output Power / Channel	90W (8 ohms, 20Hz-20kHz, 0.08% THD)