Read Sony HCD-GPX3G (serv.man2) Service Manual online
SERVICE MANUAL
SUPPLEMENT-1
1
9-890-598-81
E Model
Ver. 1.1 2012.07
File this supplement with the service manual.
Subject: Addition of SERVICING NOTES (TROUBLESHOOTING)
HCD-GPX3G
HCD-GPX3G
2
SECTION 1
SERVICING NOTES
TROUBLESHOOTING
Switching Regulator Diagnosis Flow
(1) A
C
in
pu
t
(2) Fu
se
(3) S
ub P
ow
er t
ran
sf
orm
er
(4
) CN 3
Co
nn
ec
to
r
pi
n1
:13.5V
, pi
n2
:GN
D
, pi
n3
: A
C
D
ET
, pi
n4
: MA
IN
ON
pi
n5
: SU
B
O
N
(5) MA
IN
P
ow
er tran
sf
orm
er
(6
) CN 2
Co
nn
ecte
r
pi
n1-3: P
VD
D
(D
C
+54.5V
)
pi
n4
: P
VDD
(DC+
22
V)
pi
n5
: G
ND
pi
n6
: P
VDD
(DC-
22
V)
pi
n7
-9
: P
VDD
(DC-
54
.5
V)
AC
IN
Th
e P
ow
er
C
on
trol
s
ign
al
to S
w
itc
hi
ng r
egu
lat
or
is
c
hec
ked.
Is
fol
low
in
g
pow
er
v
ol
tage
O
K?
Ch
ecks
wh
et
he
r th
e
sta
te
o
f a
Ca
bl
e
an
d
O
ut
let
ar
e
nor
m
al
. I
f t
her
e ar
e n
o
pr
obl
em
s,
ch
ecks cir
cu
m
fe
re
nce
cir
cu
it
fo
r M
ain
on
/S
ub on
O
ut
pu
t of
M
ai
n m
ou
nt
s
ide .
Ye
s
No
Th
e
O
ut
pu
t f
ro
m
S
w
itch
in
g
re
gu
la
to
r
is ch
ecke
d.
Is
fol
low
in
g pow
er
v
ol
tage
up t
o
st
an
dar
d?
S
tan
dby
D
em
o
m
ode
C
N
3 1p
in
:
C
N
2 1p
in
:
Re
pl
ac
es
S
wit
ch
in
g
re
gu
la
to
r
if
it is n
ot
up t
o
st
an
dar
d.
No
Ye
s
EN
D
13.5V ± 0.5V
13.5V ± 0.5V
7.5V ± 0.5V
54.5V
±
0.5V
Po
w
er
O
n
Main on/Sub on Standby
Demo mode Power On
CN 3 :4pin: Low (0V) Low (0V)
Hi (3V)
CN 3 :5pin
Low (0V) Hi (3V) Hi (3V)
( 1
)
(2
)
(
3)
(4
)
( 5
)
(
6
)
0V
0V
HCD-GPX3G
3
D-AMP
Mount Diagnosis Flow (1/2)
PL
AY
M
U
SI
C
Ye
s
No
C
hec
ks
O
U
T t
er
m
in
al
-4
3V
ou
tpu
t of
R
EG
IC
1
40
2
Or
, C
he
cks
GN
D
and
OU
T
Te
rm
ina
l w
ith
Te
ste
r.
Is
it
s
hor
ted
ou
t?
Ch
ecks
cir
cu
m
fe
re
nce
cir
cu
it o
f RE
G
IC
1402.
If
the
re
a
re
no
p
ro
bl
em
s,
ex
ch
an
ge
s
IC
1402.
Ye
s
C
he
ck
s 13.
5V
o
ut
put o
f
N
O
806
1p
in.
Is
th
e pow
er
v
ol
tage
O
K?
Ye
s
Ch
ecks
3V
o
utp
ut
o
f NO
80
2
5p
in
(M
ain
o
n)
Is
th
e pow
er
v
ol
tage
O
K?
Ch
ecks 3
V
ou
tp
ut
o
f
NO
80
2
6p
in
(S
ub
o
n)
.
Is
th
e pow
er
v
ol
tage
O
K?
Ye
s
C
he
ck
s 54.
5V
o
ut
put o
f
N
O
1402
1p
in(P
VD
D
).
Is
th
e pow
er
v
ol
tage
O
K?
A
B
Ye
s
Is
th
er
e au
di
o
ou
tpu
t f
rom
D
-A
M
P
Boar
d?
R
ei
ns
er
ts
th
e c
abl
e
or
E
xc
han
ges
.
If
th
er
e a
re
n
o p
ro
ble
m
s,
Ch
ecks Ou
tp
ut
of
S
ub on
O
ut
pu
t of
M
ai
n B
oar
d
si
de.
R
ei
ns
er
ts
th
e c
abl
e
or
E
xc
han
ges
.
If
th
er
e ar
e
no pr
obl
em
s,
C
hec
ks
S
ub
on
O
ut
pu
t of
M
ai
n
Boar
d
si
de.
R
ei
ns
er
ts
th
e c
abl
e
or
E
xc
han
ges
.
If
th
er
e a
re
n
o p
ro
ble
m
s,
Ch
ecks o
utp
ut
of
S
wit
ch
in
g
re
gu
la
to
r
Bo
ar
d
.
Ye
s
R
ei
ns
er
ts
th
e c
abl
e
or
E
xc
han
ges
.
If
th
er
e a
re
n
o p
ro
bl
em
s,
Ch
ecks o
utp
ut
of
S
w
itc
hi
ng
regu
lat
or
B
oar
d.
No
No
No
No
No
HCD-GPX3G
4
D-AMP
Mount Diagnosis Flow (2/2)
A
B
No
No
No
Ye
s
No
Ye
s
Ye
s
Ye
s
EN
D
R
epl
ac
es
D
-A
M
P
Boar
d
C
he
ck
s
O
U
T T
ermi
na
l 5V
o
ut
put
of
R
EG
IC
1414
or
,
Ch
ecks GND
an
d OUT
Te
rm
in
al
with
T
este
r.
Is
it
s
hor
ted
ou
t?
C
he
cks OU
T
Te
rm
ina
l -
5V
o
utp
ut o
f
R
EG IC
1415
or
,
Ch
ecks GND
an
d OUT
Te
rm
in
al
with
T
este
r.
Is i
t sho
rte
d
ou
t?
Leav
e
D
-A
M
P M
ou
nt
t
o a
st
at
e
of
it
on
ly
an
d
, c
hec
ks
P
ow
er
Au
di
o D
riv
er(MO
S
FE
T)
w
ith
Te
st
er.
Is
it
s
hor
ted
ou
t?
䋨
R
ef
er
to
P
ag
e
5.
䋩
As
sem
bl
es
in
to
th
e u
ni
t agai
n
th
en
,c
he
ck
s
w
het
her
t
her
e
is
th
e au
di
o
ou
tpu
t f
rom
D
-A
M
P
Boar
d.
R
epl
ac
es
D
-A
M
P
Boar
d
Che
cks cir
cum
fe
re
nce
cir
cui
t o
f
RE
G IC1414.
If the
re
a
re
no
p
ro
bl
em
s,
ex
cha
ng
es
IC
1414.
Che
cks
cir
cum
fe
re
nce
cir
cui
t o
f RE
G IC1415.
If the
re
a
re
no
p
ro
bl
em
s,
ex
cha
ng
es
IC
1415.