Sony NW-A100TPS Service Manual page 25

NW-A100TPS/A105/A105HN/A106HN
NFC function checking fl ow chart:
Disassemble until you see the built-
in NFC antenna of main unit.
Note 1: That the main unit is state to
operate.
The NFC antenna terminal is
properly connected to the KEY FPC
terminal.
Yes
The appearance of the NFC antenna
is normal.
(breaking of wire, damage etc.)
(See Footnote 1)
Yes
State that does not removed the
NFC antenna from the plate rear,
release the connection between the
KEY FPC. Then a new NFC
antenna connecting to the KEY
FPC, as a result of perform the NFC
connection check again, pop-up
menu is displayed. (See Footnote 2)
Note 2: Be careful not to slip out of
place the terminal connection.
Yes
Replace a new NFC antenna, NFC
connection checking is complete.
Footnote 1: After checking that the NFC antenna terminal is properly connected to the KEY FPC terminal, connect the tester to the NFC antenna terminal and
confi rm that the resistance is close to 0Ω. (Check for breaking of wire of the NFC antenna)
Footnote 2: If the pop-up menu is not displayed even after replacing with a new NFC antenna and checking the connection, check the status of the KEY FPC.
The NFC antenna is connected to the main board via the KEY FPC.
Check if the buttons on the right side of the main unit function and confi rm that the KEY FPC is properly connected to the main board. If the but-
tons do not function properly, the KEY FPC connection may be poor or disconnected.
25
After the NFC antenna terminal is
properly connected to the KEY FPC
terminal, as a result of perform the
No
NFC connection check again,
pop-up menu is displayed.
Note 2: Be careful not to slip out of
place the terminal connection.
Yes
NFC connection checking is
completion.
Replace a new NFC antenna, as a
No
result of perform the NFC
connection check again, pop-up
menu is displayed. (See Footnote 2)
Yes
NFC connection checking is
completion.
Replace the MAIN board, as a result
No
of perform the NFC connection
check, pop-up menu is displayed.
Yes
NFC connection checking is
completion.
No
No
Replace the KEY FPC, as a result
No
of perform the NFC connection
check again, pop-up menu is
displayed.
Yes
Replace a new KEY FPC, NFC
connection checking is complete.
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