Denon AVR-S900W Service Manual

The circuit around CX870 is faulty.
YES
YES
YES
YES
YES
YES
Can an output voltage (3.3V) to
U1070(DC-DC Conv.) be conrmed?
Can an output voltage (3.3V) to
Q1071(FET_SW) be conrmed?
Can an output voltage (1.2V) to U1067
be conrmed?
Can an output voltage (1.9V) to U1069
be conrmed?
Are the versions of the Ethernet SBL and IMG displayed in Version
Check Mode?
Can a voltage (5V) be conrmed between pin 2 and pin 5 of
N1029?
Is D5V_POWER (U1018 uCOM 85pin)
"Hi" ?
Is E_POWER1 (U1018 uCOM 53pin)
"Hi" ?
Is E_POWER4 (U1018 uCOM 53pin)
"Hi" ?
Is E_POWER2 (U1018 uCOM 54pin)
"Hi" ?
The circuit of D5V_POWER between
U1018 and U1070 are faulty.
The circuit of E_POWER1 between
U1018 and Q1071 are faulty.
The circuit of E_POWER4 between
U1018 and Q1071 are faulty.
The circuit of E_POWER2 between
U1018 and U1069 are faulty.
The circuit around U1070(DC-DC.
Conv.) is faulty.
The circuit around Q1071(FET_SW) is
faulty.
The circuit around U1067(DC-DC.
Conv.) is faulty.
The circuit around U1069(DC-DC.
Conv.) is faulty.
The Ethernet software is faulty.
The circuit between the AC inlet and N1029
is faulty. Check the SMPS PCB.
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
91

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)