Denon AVR-S540BT 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-S540BT Specifications

General

Channels	5.2
Power Output per Channel	70 W (8 ohm, 20 Hz - 20 kHz, 0.08% 2ch Drive)
Output Power (6 ohm, 1 kHz, 0.7% 2ch Drive)	90 W
Output Power (6 ohm, 1 kHz, 10% 1ch Drive)	140 W
HDMI Inputs	5
HDMI Outputs	1
HDMI Version	2.0a
HDCP Support	2.2
4K/60 Hz Pass-through	Yes
Dolby Format	Dolby TrueHD, Dolby Digital Plus
DTS Format	DTS-HD Master Audio
Auto Speaker Setup	Yes (Audyssey MultEQ)
Bluetooth	Yes
FM Tuner	Yes
AM Tuner	Yes
Input Sensitivity/Impedance	200 mV / 47 kOhm
Dimensions (W x H x D)	434 x 151 x 319 mm
Ethernet Port	No
Wi-Fi	No
HDR Support	HDR10, HLG
Frequency Response	10 Hz - 100 kHz - +1/-3 dB
Total Harmonic Distortion	0.08% (20 Hz - 20 kHz)
Signal-to-Noise Ratio	98 dB (IHF-A weighted)
USB Port	Yes (Front)