Sony BDP-S485 Service Manual ▷ View online
9-1
SECTION 9
TROUBLESHOOTING
Main Flow ............................................................................... 9-2
Power (System) Flow ............................................................. 9-3
IFcon Section Flow Chart (1/2) ............................................... 9-4
IFcon Section Flow Chart (2/2) ............................................... 9-5
Audio section flowchart........................................................... 9-6
Video section flowchart ........................................................... 9-7
FL-204 Board flowchart ......................................................... 9-8
IF-172 Board flowchart ......................................................... 9-9
Power (System) Flow ............................................................. 9-3
IFcon Section Flow Chart (1/2) ............................................... 9-4
IFcon Section Flow Chart (2/2) ............................................... 9-5
Audio section flowchart........................................................... 9-6
Video section flowchart ........................................................... 9-7
FL-204 Board flowchart ......................................................... 9-8
IF-172 Board flowchart ......................................................... 9-9
Drive flowchart
........................................................................ 9-12
Ethernet flowchart................................................................... 9-14
USB (Front) Device Flow........................................................ 9-15
USB (Rear) Device Flow......................................................... 9-16E
USB (Front) Device Flow........................................................ 9-15
USB (Rear) Device Flow......................................................... 9-16E
Remote does not operate....................................................... 9-10
BDP-S485
FAN......................................................................................... 9-13
KARA section.................. ....................................................... 9-11
9-2
Main Flowchart
No
No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
No
No
Yes
Yes
Yes
No
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Yes
Power ON by power switch on front or remote
control.
Has system reset (SYSCON_RST) been
cancelled?
Measurement point JL1122
To Video section flowchart
To IFcon section flowchart
Start (and return from each flowchart)
Approximately 10 seconds after the AC is
applied, the WAIT display flashes several
times and the power is turned OFF
automatically.
Are the power supply voltages on the MB
board normal?
To Power Supply (System) flowchart.
END
Replace the MB board.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
To Drive flowchart
To FL/FR board flowchart
Check the parts and mounting around X401.
Replace the MB board.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
Is OPEN or CLOSE displayed on the
fluorescent tube?
Is there any problem in the FFC connection to
CN2470 which connects the drives?
To FR board flowchart
Is XMB or the SETUP screen displayed on the
video output screen?
Do the up, down, left, and right arrow keys of
the remote control permit operations on the
XMB?
Is the main clock (X401) oscillating properly at
27 MHz?
Check the flexible cable of the drive.
Are CN2470,CN2462 or CN1401
disconnected?
Check the connections of the connectors.
If there is no improvement, replace the MB
board.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
SYS ERR display appears on fluorescent tube.
To Drive flowchart
Is the sound reproduced properly when a BD,
DVD, or other disc is played?
To Audio section flowchart
Is the picture reproduced properly when a BD,
DVD, or other disc is played?
To Video section flowchart
Are BD, DVD, or other discs that are loaded on
the drive recognized correctly?
BDP-S485
9-3
Pow
er (Sy
s
tem) F
low
AC
I
N
C
hec
k
th
e
out
p
ut
v
o
lt
ages
fr
o
m t
h
e pow
er
s
upply
bloc
k
.
C
N
301
pin
1
: +12V (
U
NS
W
12V)
C
N
301 pin 2:
+12V (U
N
SW
12V)
C
N
301 pin
3:
+12V (FE_U
N
SW12V)
- -
No
Yes
Ch
e
ck t
he
fu
s
es
Ha
v
e any
o
f t
he
below
f
us
e
s
blow
n?
No
M
B
board: PS301,
PS302
PS1201 -
Yes
Ch
e
ck
th
e
fo
llo
w
ing
po
w
er c
on
trol
s
ignal
s
wh
ile
th
e
pow
er is
ON
P
CO
NT_
CO
RE
: MB board
R3
2
7
PC
ON
T2
:
M
B board
R1236
P
CO
N
T
3
: M
B
board
R
3
05,R
307,R
3
09,R
343
A
T
A_P
C
ON
T
: M
B board
R
376
No
Yes
Ch
e
c
k
t
he
vo
lta
g
e
s ba
se
d
on
th
e
s
che
m
a
ti
c
diagram
No
Volt
age
lines
th
a
t are no
t ou
tpu
t
are short
e
d
to
G
N
D
No
F
ailure o
f
pow
er
su
p
p
ly
IC
->
R
eplac
e
th
e
IC
R
eplac
e t
he MB board if
t
here is no
improvement
Ch
e
c
k
th
a
t
th
e
harnes
s
ha
s
been ins
er
ted
properly.
I
f t
here
is
no problem
, replac
e
t
he
po
w
er
s
upply
blo
c
k
.
Re
plac
e bl
own
fu
ses
Re
p
lac
e t
he
MB
b
oard i
f the
re
is n
o
improve
m
en
t
To
IF
co
n
s
e
cti
o
n
Fl
o
w
BDP-S485
IF
co
n
Sectio
n
F
lo
w
Ch
ar
t(1/2
)
IF Con block power supply check
UNS
W
3.3V vol
tage (+3.3V
)
Is
3
.3
V
output f
ro
m
IC301 pi
n
4
?
N
o
Inpu
t
vol
ta
g
e
Is +3.8V i
nput to IC301 p
in5?
No
No
Input voltage
Is +11.8V input to IC302 pin2?
Ye
s
Yes
Yes
Rep
lace IC301
If sym
p
to
m
s do not i
m
prove,
check for a
short
on t
he
c
ir
c
u
it
boa
rd
RE
G cont
rol
vo
lt
a
g
e
Is
+3
.8
V
i
nput
to IC301
pi
n
1
?
No
Replace R304
If the symtoms, replace IC301
Y
e
s
Re
pl
a
c
e I
C3
01
P_F
AI
L
d
etec
tion
o
p
er
a
tio
n
c
h
e
ck
Check t
h
e
P_
F
A
IL vol
tag
e
No
No
Is +3.3V
output f
ro
m
IC120
4
p
in2
?
Yes
M
ai
n uni
t
key check
Chec
k
of key vol
tage fr
o
m
m
a
in
uni
t K
e
y
T
abl
e (
*) w
hen key i
s
pressed or not pressed
No
No
POW
E
R:
CN1203 pi
n1(JL126
9
)
KEY0
S
T
O
P
:
C
N1204 pi
n21(JL1233)
KEY1
OPE
N/CLOSE
:
CN1204
pi
n22(JL1232)
KE
Y
2
P
L
A
Y
:
CN
1204 p
in23(JL1231
)
K
E
Y3
Yes
R
em
o
te co
nt
ro
l
o
p
e
ra
ti
o
n
ch
eck
Chec
k
t
he w
avef
o
rm
w
hen
the
rem
o
te
contr
o
l but
ton i
s
not pres
s
ed
No
Chec
k
w
hether
t
h
e
F
FC
i
s
d
isconnect
e
d
from
CN12
0
4
. (Ot
he
r than the
POW
E
R key)
No
Check
of the 3.3V vol
tage
C
N1204 pi
n19
a
nd
IC1203
pi
n31
Yes
Check
o
f
th
e
w
ave
fo
rm
w
hen
th
e
key
is
pres
sed
In com
p
ari
s
on w
ith
a
norm
al
w
a
ve
fo
rm
,
is
the w
a
v
eform
o
f t
h
e
vol
ta
ge
o
utp
u
t
tl
?
No
Is
the rem
o
te
c
on
tro
l
tha
t
is used i
n
th
e
inspect
io
n
broken
?
No
Does repl
acem
e
nt of the
IF
board resul
t i
n
im
p
rovem
ent?
No
Ye
s
Check w
h
ether the F
F
C i
s
di
sconnected
fro
m
CN
120
4
.
Yes
Re
p
la
ce
R1264
and chec
k
for
+
3.3V
at
I
C120
4
pi
n1
If sym
p
tom
s do not
i
m
prove, rep
lace
IC120
4
(P
_FAIL detecti
on)
* Ke
y T
ab
le
In
pu
t
(K
EY0
)
(K
EY
1)
2.
90
-
0.
00 -
Ke
y_O
FF
PO
WER
Ke
y_
OF
F
ST
OP
O
PEN/
CLOSE
(K
EY
2)
(K
EY
3)
Ke
y_
OF
F
Key_
OF
F
PLAY
B
To
IF
boar
d
Fl
ow
9-4
Is there voltage of about 3.3V at pin 21,22
and 23 of CN1204 and pin 1 of CN1206
without pressing the keys?
Is there a problem with the mounting
condition of RB1201,RB1202,C1213,C1214,
C1215 and C1216?
Y
es
Replace RB1201,RB1202,C1213,C1214,
C1215 and C1216. If the symptoms do not
improve, replace IC1203 or MB board
Ye
s
DCDC4V voltage (+3.8V)
Is 3.8V output from IC302 pin 3?
Does repl
acem
en
t
of
t
h
e
IF
board resul
t i
n
im
provem
e
nt?
No
Yes
To
IF
boar
d F
lo
w
If the FFC from CN1204
disconnected?
(other than POWER KEY)?
Is the harness from CN1203
disconnected?
(POWER KEY)
No
Yes
Replace R302
If the symtoms do not improve, replace IC302
Is the fuse (PS301) blown?
Replace PS301
if the symptoms do not improve,check for
a short on the circuit
No
To
Power Supply (System)
o
EN control voltage
Is +11.8V input to IC302 pin2?
No
N
Yes
Replace IC302
A
BDP-S485
Click on the first or last page to see other BDP-S485 service manuals if exist.