Sharp LC-37GD7E (serv.man2) Service Manual ▷ View online
44
Mainfilter & Rectification
Active PFC
Stand By
Resonant Converter
Class D audio amplifier
Buckconverter
12V
Buckconverter
9V
Dual
Buckconverter
5V
3,3V
Inverter
-5V
Self osc.
Booster
33V
W691
SB supply
on/off
9V
33V
W652
W651
BL supply
W811
Audio in
Mute
W898
W889
LS left
LS right
W450
ext.
Audio supply
5V
W661
Control / Prot.
W103
W102
W101
Mainswitch
Main in
390V
15V / 24V
15V
ICE2A0565G
MC33262
L6598
MPS7731
L5973
L5973
ST755
L5994
10A
100mA
750mA
2500mA
300mA
100mA
5mA
400mA
2A
Block diagram basicboard
45
SCART2S
C
A
R
T
2
1or21
o
r2
TUNERT
U
N
E
R
HDMIH
D
M
I
SCART1S
C
A
R
T
1
MPEG_D
ec
oder
M
P
E
G
_
D
e
co
d
e
r
ST 5518S
T
5
5
1
8
64Mbit 6
4
M
b
it
SDRAMS
D
R
A
M
32Mbit3
2
M
b
it
F
lash
F
la
sh
64Mbit 6
4
M
b
it
SD RAMS
D
R
A
M
DVB_SD
V
B
_
S
F
ront
end
F
ro
n
te
n
d
ST
V0299
S
S
T
V
0
2
9
9
DVB_TD
V
B
_
T
F
ront
end
F
ro
n
te
n
d
Multistandar
d
M
u
lt
is
ta
n
d
a
rd
A
u
dio_P
ro
ce
ssor
A
u
d
io
_
P
ro
ce
ss
o
r
.
MSP44xx KM
S
P
4
4
x
x
K
Multistandar
d
M
u
lt
is
ta
n
d
a
rd
V
ideo_
V
id
e
o
_
F
ront
e
nd
F
ro
n
te
n
d
V
SP94x7
V
S
P
9
4
x
7
HDMIH
D
M
I
Rec
eiv
er
R
e
ce
iv
e
r
OptionalO
p
ti
o
n
a
l
D
eint
e
rlac
er
D
e
in
te
rl
a
ce
r
FRCA9429F
R
C
A
9
4
2
9
ScalerS
ca
le
r
DPS9455D
P
S
9
4
5
5
P
roc
essor
M2M
2
64Mbit 6
4
M
b
it
SDRAMS
D
R
A
M
F
lash
F
la
sh
EAROME
A
R
O
M
LV
D
S
LV
D
S
C
o
mponent
C
C
o
m
p
o
n
e
n
t
VGAV
G
A
DVB-SA
T
D
V
B
-S
A
T
TunerTu
n
e
r
CinchC
in
ch
Au
d
io
A
u
d
io
FPGAF
P
G
A
32Mbit3
2
M
b
it
Block diagram signalboard
46
1
2
4
3
5
6
7
8
TV
TV
TXD1
RXD1
RXD2
TXD2
U5
U5
200R
100R
3K3
4K7
680R
R330
6K8
Service
Bootload
Connect 1
U5
50mA max.
protected
Service interface
47
Scart 1/6 (l)
Cinch R (W2171/7
)
Cinch
Center (W2171/1)
Cinch
L F
ront (W2181/4)
Scart 1/1(r)
Cinch R (W2221/4)
Headphone (W2181/10)
SIF (from terr
. T
uner)
4.5....6.5MHz
Output to Amplifier
MSP
44xxK
56
53
50
59
47
33
41
36
24
67
27
DVB I²S
HDMI I²S
4/5/7
19/20/
22
SPDIF out
external
SPDIF in
external
SPDIF internal
SPDIF
DVB
SPDIF
HDMI
NJM2293
HDR I²S
(W2151/8)
HDR I²S
(W2151/10)
17
6
76
I 3951
I 3001
57
Scart 1/2 (r)
(l)
(r)
Scart 2/6 (l)
Scart 2/2 (r)
54
(l)
(r)
51
Cinch L (W2171/4)
(l)
(r)
60
48
Cinch
R F
ront (W2181/2)
(l)
(r)
Scart 1/3(l)
34
Scart 2/1(r)
Scart 2/3(l)
37
42
(r)
(r)
(r)
(r)
(l)
(l)
(l)
(l)
Cinch L (W2221/1)
Headphone (W2181/11)
25
68
(U2141/2-9)
(U2141/2-10)
28
(W2231/2)
(W2231/4)
(r)
(l)
(W2221/3)
(W2221/6)
1
16
7
9
14
Signal path audio
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