Main L Board-3 (L-Ch) - Sony WH-1000XM4 Service Manual

WH-1000XM4

2-19. MAIN L BOARD-3 (L-ch)

Note 1: Replacing only the MAIN L board is not possible.
When replacing the MAIN L board, be sure to replace the MAIN L board and NFC L board simultaneously.
The NFC L board and NFC L board connection wire are included in the repair parts of MAIN L board.
Also, when MAIN L board and NFC L board are replaced, then it is always necessary to work the writing
for multiple information such as Bluetooth address and adjustment value of noise canceling function etc..
When MAIN L board is replaced, be sure to refer "NOTE FOR REPLACING THE MAIN L BOARD" on page 6.
1 Draw the KEY L FPC
out of the connector
in MAIN L board.
Align the KEY L FPC constriction
and MAIN L board edge.
4 Draw the flexible flat cable (6 core) out
of the connector in MAIN L board.
Note 4: When removing the flexible flat cable (6 core) from
the MAIN L board, do not pull the flexible flat cable
(6 core) with excessive force.
If the flexible flat cable (6 core) breaks or disconnects
from the connector on the SENS L board side, the IR
sensor will malfunction.
42
– L-ch –
MAIN L board
MAIN L
board
boss
guide line
(edge)
The opposite side
is terminal side.
5 MAIN L board
(See Note 1)
2 tapping screw P2
(L = 5.0 mm)
3 Open the MAIN L board
in the direction of the arrow.
Note 2: When installing the MAIN L board,
boss
hole
hole
Note 3: The flexible flat cable (6 core) connecting the SENS
L board and MAIN L board is connected.
Do not pull the MAIN L board with excessive force.
If the flexible flat cable (6 core) breaks or disconnects
from the connector on the SENS L board side, the IR
sensor will malfunction.
How to install the flexible flat cable
Insert the flexible flat cable straight into the interior.
There is a possibility that using this unit without the
connector correctly installed will damage it.
Insert straight into the interior.
flexible flat
cable
colored line
connector
Insert at a slant.
flexible flat
cable
colored line
connector
Sony CONFIDENTIAL
For Authorized Servicer
2 tapping screw P2
(L = 5.0 mm)
2 tapping screw P2
(L = 5.0 mm)
align the two holes and two bosses.
MAIN L board
OK
NG NG
Insert only part way.
flexible flat
cable
colored line
connector
SYS SET