Denon AVR-X250BT Service Manual

5. Bluetooth
The circuit around [BT PCB : BN912 and BT module : MB1520BD] is faulty.
Are [BT PCB: BN911, BN912] and [Digital PCB]
connected correctly?
Can you conrm the voltage (3.3V) between pin 3
and pin 5 of BT PCB [BN912]?
Is the Bluetooth device compatible with the A2DP
prole?
Is the Bluetooth function enabled on the
Bluetooth device?
Connect the connectors correctly.
The circuit around [Q7510] of the DIGITAL PCB is
faulty.
Use a device that is A2DP prole compatible.
Enable the Bluetooth function and try connecting
again.
Checking the unit
Check the Bluetooth device being used
NO
NO
NO
NO
YES
YES
YES
YES
5.1. Cannot establish a Bluetooth connection
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
65

Denon AVR-X250BT Specifications

General

Impedance	16 Ω
Receiver type	Surround
Frequency range	10 - 100000 Hz
Pre-out connectivity	Yes
Audio output channels	5.1 channels
Signal-to-Noise Ratio (SNR)	98 dB
Total Harmonic Distortion (THD)	1 %
Power output per channel (1KHz@6 Ohm)	90 W
Power output per channel (1KHz@8 Ohm)	70 W
Power output per channel (20-20KHz@8 Ohm)	130 W
AirPlay	No
Display	VFD
HDCP version	2.2
Product color	Black
Audio decoders	DTS-HD, DTS-HD Master Audio, Dolby Pro Logic II, Dolby TrueHD
HDMI in	5
Composite video in	2
Digital audio coaxial in	-
Supported graphics resolutions	3840 x 2160
AM band range	522 - 1611 kHz
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	330 W
Number of HDMI outputs	1
Connectivity technology	Wired & Wireless
Speakers connectivity type	Clamp terminals

Weight and Dimensions

Depth	319 mm
Width	434 mm
Height	151 mm
Weight	7500 g