SMSL M400 - Advanced Instructions; Flags, Bluetooth, and Reset

Connect the power cord when pressing the power button, until the
screen shows the logo. Then stop pressing and restart the unit.
I
2
S DSD FLAG
DSD FLAG=PIN15
DSD FLAG=PIN14
Factory Resett
DSD FLAG 14DSD FLAG 15
BRIGHTNESS
LEVEL1-6
BRIGHTNESS
GND
I
2
S BCK +
I
2
S BCK -
GND
I
2
S MCLK +
I
2
S MCLK -
NC
MUTE
NC
I
2
S DATA +
I
2
S DATA -
GND
I
2
S LRCLK +
I
2
S LRCLK -
GND
NC
DSD FLAG
NC
GND
2
1
18
19
GND
I
2
S BCK +
I
2
S BCK -
GND
I
2
S MCLK +
I
2
S MCLK -
DSD FLAG
MUTE
NC
I
2
S DATA +
I
2
S DATA -
GND
I
2
S LRCLK +
I
2
S LRCLK -
GND
NC
NC
GND
2
1
18
19
NC
Instructions
Bluetooth operating instructionst
Connection:
Step 1: Switch the input source in the SETTING MENU or press the Bluetooth
button of the remote;
Step 2: Turn on the Bluetooth function of the mobile phone, search for
"SMSL HDBT", and tap to pairing. When the mobile phone displays
"connected", it has been successfully connected.
Re-connection:
When you had lost the connection with the M400, for example,going out, and
back home, some phones will not re-connect the M400 if the M400 has not
been re-boot, so you can press the Bluetooth button on the remote to Re-connect.
Clear pairing: Long press the "Bluetooth" button on the remote control. After clearing
the pairing, some phones may no longer be able to search for "SMSL HDBT". In
this case, you need to delete the Bluetooth device "SMSL HDBT" which saved in
the phone, and then search and pairing again.