Sony WH-1000XM4 Service Manual page 18

WH-1000XM4
6. Tap the "MDR NFC Writer" icon on the smartphone screen to
start the application.
MDR NFC
Writer
7. Tap the [Read] button on the application screen.
8. In the state of step 7 for the smartphone, touch the N-mark part
of the smartphone to the N-mark part of headset.
3-5. The Factor that One Touch Connection (NFC function) is Impossible
The four following factors are considered as the factor that one touch connection (NFC function) is impossible.
Guess and check the defective factor by each checking result.
Note: The four failure factors are examples.
Bluetooth manual con-
Factor
nection check by user
Left channel side
1
defect
2 NFC L board defect
NFC tag data writing
3
failure
4 Smartphone trouble
18
– Continued on upper right –
NFC tag data check
NG ―
OK NG
OK NG
OK OK
9. Check that the alphanumeric characters of "BD_ADDR" dis-
played on the application screen matches the value recorded in
step 4.
Note 3: If "0000 (Read-only)" is displayed in the "MODE" column on
the application screen, NFC tag data has been written without any
problem and cannot be changed.
MDR NFC Writer screen
Check
10. End the NFC Tag Data Writing Application (MDR NFC Writer).
11. Press the [1] button for about 2 seconds until the blue indicator
of left channel side on the headset lights off to turn the power off ,
and then perform the "INITIALIZING METHOD" on page 5 to
delete the connection history.
about 2
seconds
Bluetooth manual connec-
tion check by servicing
NG
OK
OK
OK
Sony CONFIDENTIAL
For Authorized Servicer
Value recorded
in step 4
match 045D4B7D67BD
Blue Light off
Perform the
initialization
NFC one touch connection
check with smartphone
NG
NG
NG
NG
SYS SET