Sony DSX-A410BT Service Manual page 13

5. The Factor that One Touch Connection is Impossible
The four following factors are considered as the factor that one touch connection is impossible.
Guess and check the defective factor by each checking result.
Note: The four following factors are examples.
Bluetooth manual con-
Factor
nection check by user
1 BT module defect
knob (VOL) assy
2
defect
NFC tag data
3
writing failure
4 Smartphone
AFFIXING OF LABEL (SERIAL NUMBER)
When the front panel assy (Ref. No. FP1) is replaced, it is neces-
sary to affi x the label (serial number).
2 labels (serial number) are included with a new front panel assy
(Ref. No. FP1). Affi x 1 label to the rear side of the front panel assy
(Ref. No. FP1). Affi x the other one to the bottom side of main unit.
Be sure to perform this procedure, as Bluetooth will not operate
correctly if the serial number of the front panel assy (Ref. No. FP1)
and main unit do not match.
Also, since the serial number has changed, print page 15 and hand
the tear-off with the product to the customer when returning the
product after repairs are complete.
label (serial number)
– Front panel assy rear view
label (serial number)
– Main unit bottom view –
NFC tag data check
―
NG
OK NG
OK NG
OK OK
–
DSX-A410BT/A415BT
Bluetooth manual connec- NFC one touch connection
tion check by servicing
NG
OK
OK
OK
check with smartphone
NG
NG
NG
NG
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