MVH-290BT/XEUC
8
1
2
3
4
1
2
3
4
C
D
F
A
B
E
A5V
Detachment is not illuminated.
Check if the BT device is correctly paired or not?
*How to check: See "BT CONNECT" of "Bluetooth settings"
In case correctly paired : Refer to "No sound from the speakers" for further troubleshooting.
In case incorrectly paired : Attempt to pair the BT device again.
In case correctly paired: Play the BT audio and if it is still no audio, refer to "No sound from the speakers" for further troubleshooting.
In case incorrectly paired: Check if other BT devices can be paired or not.
In case correctly paired with other BT devices: The cause should be BT device factor.
In case incorrectly paired with other BT devices: Replace the product (otherwise MBL CMPX MODULE if it is available).
Defect of BT Telephone use
Can't hear receiver voice: Refer to "No sound of BT AUDIO" for further troubleshooting.
How to check
Check if there is any signal on the line of "MIC-P" and "MIC-N" on the MIAN BOARD PCB. (Check between the line and GND.)
In case of no signal: The cause should be microphone factor
In case of correct signal: Replace the product (otherwise MBL CMPX MODULE if it is available).
No sound of BT audio
Check the power of MAIN BOARD PCB (Connector J9 2-pin: LAMP (5V)).
If an error occurs in the power, replace the product (otherwise MBL CMPX MODULE if it is available).
If you do not find any error, replace the detach grill (Detachable Assy).
(Check Point)
A5V
K5V
LAMP
K5V
A5V
LAMP(5V)
(Check point)
Bluetooth settings
Menu Item
Description
BT CONNECT
Display the paired Bluetooth devices. “*” appears on the
device name when the Bluetooth connection is
established.
[ON], [OFF]
Check point of MIC-P
(One side of R516)
Check point of MIC-N
(One side of R517)
