Read Sony BDP-S1700ES / BDP-S770 Service Manual online
9-17
BDP-S770/S1700ES
HU
B boa
rd flow cha
rt (1/2)
(1) Does not
recognize a U
SB device a
t the front
panel
Insert a
US
B memory
device to t
he term
ina
l on front
pa
nel.
St
art
t
he serv
ice mode.
Perform
Dia
g>Wireless LAN
Test
>Show WLAN H
wInfo
Is "WLAN
HwInfo" displa
yed properly
?
Replace t
he harness for t
he CN103.
Do t
he symptoms improv
e?
Is 3.3 V present a
t IC102 pin 4?
Is 3.3 V present at
IC102 pin 1
?
A
B
Defective IC102.
Perform
Dia
g>Device Test
>U
SB Host
Is "Front U
SB Media check" OK?
Replace t
he harness for t
he CN104.
Do t
he symptoms improv
e?
Replace t
he FR board.
Do t
he symptoms improv
e?
Is 5 V present
at IC105 pin 4?
Is 3.3 V present at
IC105 pin 1?
D
No defect
.
Or noncompliant U
SB memory device.
Defectiv
e harness for t
he CN104.
Defect
iv
e FR board.
Is 5.8 V present at
IC 105 pin 2?
Repla
ce the ha
rness for the CN102.
Do the sy
mpt
oms improv
e?
A
Repla
ce HUB board.
Do the sy
mpt
oms improv
e?
Defective IC104.
Repla
ce the MB board.
Then perform the drive adjustment.
HU
B
boa
rd flow cha
rt (2/2)
(2) From WLAN flow
Insert a
US
B memory
device to t
he term
ina
l on front
pa
nel.
St
art
t
he serv
ice mode.
Perform Dia
g>Device Test
> U
SB Host
Is "Front U
SB Media check" OK?
Replace t
he harness for t
he CN103.
Do t
he symptoms improv
e?
Is 3.3 V present a
t IC102 pin 4?
Is 3.3 V present at
IC102 pin 1
?
E
Repla
ce the ha
rness for the CN102.
Do the sy
mpt
oms improv
e?
F
Replace t
he WLAN
module.
Do t
he symptoms improv
e?
Replace t
he harness for t
he CN101.
Do t
he symptoms improv
e?
Replace t
he EM boa
rd.
Do t
he symptoms improv
e?
Repla
ce the ha
rness for CN401(EM
board.)
Do the sy
mpt
oms improv
e?
Is 5 V present
at IC103 pin 4?
Is 3.3 V present at
IC103 pin 1?
E
EM boa
rd.
Defect
ive harness for t
he CN401(EM
board).
Defective IC103
Repla
ce HUB board.
Do the sy
mpt
oms improv
e?
Defect
ive IC104.
Repla
ce the MB board.
Then perform the drive adjustment.
B
A
C
C
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
D
G
YES
YES
YES
NO
NO
YES
NO
NO
NO
YES
YES
YES
NO
NO
YES
E
NO
F
G
YES
NO
NO
YES
YES
Defectiv
e harness for t
he CN103.
NO
NO
NO
Is 5.8 V present at
IC102 pin 2
?
YES
YES
Defect
ive IC105.
Defect
ive harness for t
he CN102.
NO
NO
NO
YES
YES
YES
NO
Defectiv
e harness for t
he CN103.
Defectiv
e WLAN module.
Defectiv
e harness for t
he CN101.
Is 5.8 V present at
IC102 pin 2
?
Defective IC102.
Defect
ive harness for t
he CN102.
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