MEX-XB100BT - Sony Car Audio Service Manual (repair manual). Page 28

When the complete MAIN board is replaced, it is necessary to replace knob (VOL) (SV) 
assy simultaneously. Also, the destination setting, Bluetooth operation check and Bluetooth 
information writing is necessary. Refer to “DESTINATION SETTING METHOD” on page 
4, “BLUETOOTH FUNCTION CHECKING METHOD USING A CELLULAR PHONE” 
on page 8 and “BLUETOOTH INFORMATION WRITING METHOD” on page 9.

6 three screws
 (PTT2.6 

u 6)

6 screw
 (PTT2.6 

u 6)

3 Remove the solder.

4 Fix the bent legs of chassis. 

5 three ground point screws
 (PTT2.6 

u 6)

9 MAIN board 
 block

8 Remove the MAIN 
 

2 lead wire with connector
 (CN1002)

1 Remove the cable 
 

7 claw

Bend legs of chassis 
the angle of bending 
is 75° to 90°.

Note 3: The heat transfer sheet must be pasted on this 
 

position. However, when the MAIN board block 

 

is removed, the heat transfer sheet may adhere 

 

to the MAIN board. 

 

Paste the heat transfer sheet on this place again 

 then.

Note 2: Arrange the lead wire 
 

along a white line.