Sharp 51GT-25 (serv.man8) Service Manual ▷ View online
25
51GT-25S
Page 23
8
9
10
11
12
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14
R
Q
P
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N
M
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Page 24
SCHEMATIC DIAGRAM (01 Version).
51GT25S
+8V
2
7
-10-2000
GA-1
Q
5
ELECTRONICA
E
S
P
A
N
A
S
.A
.
FECHA
4
B
K
6
CODIGO
IP
1
0
2
2
REVISIONES
ESCALA
REALIZADO
3
MODELO
APROBADO
T
3
M
0
7
N
FECHA
VERIFICADO
N
A-2
SHARP
NOMBRE
7
2
5
-0
9
-2000
HASTA INFO 07
8
2
6
-0
9
-2000
H
A
S
T
A
I
N
F
O
0
8
0
5
6
0
5
-10-2000
HASTA INFO 0
8
5
1
8
-10-2000
H
A
S
T
A
I
N
F
O
0
8
6
8
9
HASTA INFO 0
8
8
2
3
-1
0
-2000
24-10
-2000
HASTA INFO 09
0
10
V-B
V-A
SDA
SCL
VIDEO
+8V
SLOW
.
+5VB
R404 1K
R418 1K
R416 1K
R407 47
(1/2W)
D412
DX0045BM
C412
10nF
FB304
BLN-0037CE
C408 100P
C414 330pF
C409 100P
C407 .001
C413 330pF
R366
220
R365
220
R428
100K
R421
47
R425
100K
C243 .01
C244 .01
C245 .01
C211 .1
R238
47K
R239 330
R263
56K
R231 18K
R232 22K
D201
DX0045BM
R228 3K3
R233
470
C209
.022
D212
DX0045BM
D213
EX0413BM
(8,2v)
Q209
(BC337-40)
H-TX0218BM
R240 1
(1/3W)
R-XZ0100BM
C230 1nF
R236 1K2
(1/2W)
Q202
2SA1037KQ
R205 6K8
D203 DX0045BM
R364 470
R362 2K2
Q355
TX0235BM
Q354
TX0235BM
R209 47K
R203 560
C207 .1
C229 10P
L301 3.3uH
(XF)
R513 1K8
C235 1000
(10V)
R806 2.2
R802 220
R804
39K
C205
10
(16V)
RJ42
0
Q201
TX0235BM
R211 100
R210 100
R202
150
R253 47
R608 2K2
R612 15K
R615
15K
D603
DX0045BM
D602 DX0045BM
R805
3M9
Q401
BC337
H-TX0217BM
R427
6K8
R426
6K8
C420
47
(16V)
C421
47
(16V)
C410
47
(16V)
C213
22
(16V)
C422
47
(16V)
C210
.22
(25V)
C218
100P
C202
.022
C217 .047
C818
330pF
C203
3300P
C204
68P
C250 .22
(25V)
R422
100K
C508
.1
(ML)
C610
.01
P201A
(L2
)
1
IC201
TDA8842
RH-IX1812BMZZ
. IF IN
1
. IF IN
2
. EHT
3
. VERT SAW
4
. VERT REF
5
. AGC
6
. AGC OUT
7
.
8
.
9
. IF IN
10
. EXT IN
11
. NC
12
. FI LC
13
. FI LC
14
. PLL FIL
15
. CVBS OUT
16
. SCL
17
. SDA
18
. B-GAP
19
IN .
20
AV .
21
VCC .
22
VCC .
23
VIDEO IN .
24
GND .
25
NC .
26
. FIL2
58
. FIL1
59
. GND
60
. GND
61
. VL
62
. VERT B
63
. VERT A
64
R363
1K
R518
1.5
(1/2W)
V
-IN
V-OUT
FB
RG
SLOW
B
L-IN
L-OUT
R-IN
R-OUT
S
C
401
Z2107BM
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
.
9
.
10
.
11
.
12
.
13
.
14
.
15
.
16
.
17
.
18
.
19
.
20
R201
1K
C612
1
(50V)
R301
470
C613
4700P
CF302
C0270CE
R408
220
C252
.1
FB201
BLN-0037CE
R809
100
C206
1000
10V
IF O2
IF O1
+5V
BL
BM
BU
VT
AGC
TU201
RTUNH0124BMZ
Z
.
1
.
2
.
3
.
4
.
5
.
6
.
11
.
10
C242
.01uF
D410
(7.5V)
EX0412BM
R424
10K
R423
4K7
SF201
RFILC0274BM
G1984
.
2
.
5
.
1
.
4
.
3
R420
82
R414
82
R417
82
R410
82
C225
220
(16V)
C826
4,7
(50V)
C815
2.2
(50V)
C236
220
(25V)
R235
56K
C411
100P
R825
6K8
CF301
C0020CE
R225
180
R807
220
C817
.001
R250
82
C234
2.2
(50V)
C212
.1
C240
100nF
R204 4M7
R208
47K
C208
470nF
FZ4474BMNJ
FB351
BLN-0037CE
D510
EX0404BM
(3V3)
D511
(3V3)
EX0404BM
26
51GT-25S
Page 27
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
BLOCK DIAGRAM
1
2
3
4
1
2
3
1
4
2
3
8
T700
3
5
6
9
2
5
6
8
3
10
7
11
H.V
FOCUS
G2
10
9
14
13
12
11
15
16
CH+
CH-
VOL+
VOL-
4
5
6
3
2
1
I C 5 0 1
49
50
51
52
AV
MUTE
POW
5V
SCL
KEY
VT
IC1001
+150V
G 2
FOCUS
PWB-B
DUNTK7284BMN2
CRT
H.V.
GND
R
G
B
HEATER
4
3
2
1
(H)
150V
T601
Q 7 0 1
+10V
110V
20V
-10V
7V
Q 7 0 5
3.3V
Q711
2.5V
Q709
+ 1 0 V
- 1 0 V
Vertical
D r i v e r
Q 5 0 5 , Q 5 0 6
O U T P U T
A M P
Q 5 0 2 , Q 5 0 4
Feed back
150V
6.3V
1 2 V
Q601
Q 6 0 2
Q 6 0 4
Q 6 0 3
1 1 0 V
Q883
Q885
Q887
Q870
Q871
Q872
2,5V
Q 5 0 3 , Q 5 0 4 , Q 5 0 5
Fly Back
P u l s e
P u l s e
V-Pulse
4
5V
Q708
G 2
F o c u s
.
.
(G)
A D G C O I L
S1001
S1002
S1003
S1004
L701
PR701
S 7 0 1
F701
T3.15A
(A)
P701
N0304CE
IC1002
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
SC881
VD842CE
.
7
.
9
.
3
.
5
.
4
.
6
.
8
P881A
(L2)
(L2)
1
(K)
.
5
.
4
.
3
.
2
.
1
P601
(F)
.
1
.
2
.
3
.
4
.
5
(H)
.
1
.
2
.
3
.
4
V-IN
V-OUT
.
18
.
19
.
20
.
21
IC701
4
1
2
3
L702
L703
D211
D604
AC 220-240V
50HZ
50HZ
27
51GT-25S
Page 26
8
9
10
11
12
13
14
I
H
G
F
E
D
C
B
A
BLOCK DIAGRAM
44
47
46
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
45
48
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
49
50
1
3
2
1
RMC0001
R M C U 0 222CE
POW
5V
SLOW
PROT
AGC
FRONT
VCC2.5
GND
VCC
CVBS
ANA VCC
ANA GND
V
VL
H
BG/L
IR
VSYNC
U
L/L
´
AGC
VH
GND
VCC
RESE
T
ANA G
N
D
ANA VCC
R
G
B
BLK
VCC2.5
GND
VCC
KEY
KEY
KEY
SDA
SCL
KEY
OUT
5V
Q901
B
G
R
F e e d b a c k
3 . 3 V
Q 1 0 0 3
Q305
Mute
A M P
Audio
Q401
Q354
Q355
+ 8 V
Q209
10V
Sound Filter
CF302
S o u n d Trap
C F 3 0 1
SF201
S A W F ilter
Q202
5V
7 V
D 1 0 2 1
.
X801
4.43MHZ
4.43MHZ
J 3 0 1
1
5
4
3
2
6
7
P 3 0 1
.
1
.
2
S P 3 0 1
.
1
.
2
V-OUT
FB
R
G
SLOW
B
L-IN
L-OUT
R-IN
R-OUT
SC401
Z2107BM
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
.
9
.
10
.
11
.
12
.
13
.
14
.
15
.
16
.
17
.
18
.
19
(K)
.
5
.
4
.
3
.
2
.
1
IC201
. IF IN
1
. IF IN
2
. EHT
3
. VERT SAW
4
. VERT REF
5
. AGC
6
. AGC OUT
7
. AUDIO OUT
8
. S- IF IN
9
. IF IN
10
. EXT IN
11
. NC
12
. FI LC
13
. FI LC
14
. PLL FIL
15
. CVBS OUT
16
. SCL
17
. SDA
18
. B-GAP
19
IN .
20
AV .
21
VCC .
22
VCC .
23
VIDEO IN .
24
GND .
25
NC .
26
AUDIO OUT .
27
CAL .
28
EXT VIDEO .
29
SENS .
30
B OUT .
31
G OUT .
32
R OUT .
33
ABL .
34
R IN .
35
G IN .
36
B IN .
37
FB .
38
Y IN .
39
Y OUT .
40
NC .
41
NC .
42
NC .
43
NC .
44
B-Y OUT .
45
R-Y OUT .
46
B-Y IN .
47
R-Y IN .
48
SECAN_REC .
49
.
50
XTAL .
51
. OSC_PLL
52
. VCC
53
. VIDEO_OUT
54
. BLACK
55
. H_OUT
56
. FLY_BACK
57
. FIL2
58
. FIL1
59
. GND
60
. GND
61
. VL
62
. VERT B
63
. VERT A
64
X1001
6 MHZ
IF O2
IF O1
+5V
VT
AGC
TU201
.
1
.
2
.
3
.
4
.
5
.
6
.
11
.
10
28
51GT-25S
NO FUNCTION(NO SOUND AND NO PICTURE)
Yes, red
Not light
Approx. 0 V
Approx. 8 V
Check R204, Q209
and Q500.
and Q500.
Approx. 0 V
Approx. 3.3 V
Approx. 0 V
Check R737, D755,
Q709 and IC1001.
Q709 and IC1001.
Check IC201, IC1001,
IC1002
Normal
Broken
Check Q701,
D718, C718
and
Q601
D718, C718
and
Q601
Normal
Broken
Check D708,
C711
and IC701
and IC701
Check Q601,
D708
and C711
D708
and C711
Check F701,
R703 and
Q701
R703 and
Q701
Is D1011
(LED) on a
light?
(LED) on a
light?
Check D724
Check Q711
emitter
voltage
emitter
voltage
Check C206
Voltage
Voltage
Check Q709
emitter
Voltage
emitter
Voltage
Check R737,
D713,Q704,
IC1001 and
IC1003.
D713,Q704,
IC1001 and
IC1003.
TROUBLESHOOTING TABLES.
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