Sharp 37GT-25 Service Manual ▷ View online
13
37GT-25H
WAVEFORM MEASUREMENT CONDITION:
Colour bar genetator signal of 70 dB from RF input.
Colour bar genetator signal of 70 dB from RF input.
DESCRIPTION OF SCHEMATIC DIAGRAM
1. The unit of resistance «ohm»is omitted (K=1000
ohms. M= Megaohm).
2. All resistors are 1/8 watt. unless otherwise noted.
3. All capacitors are
ohms. M= Megaohm).
2. All resistors are 1/8 watt. unless otherwise noted.
3. All capacitors are
µ
F, unless otherwise noted (P=
µµ
F).
4. The capacitor with Part No. RC-FZ9XXXBMNJ is
designed to with stand 63V.
5. The capacitor with Part No. RC-FZ4XXXBMNJ is
designed to with stand 50V.
designed to with stand 63V.
5. The capacitor with Part No. RC-FZ4XXXBMNJ is
designed to with stand 50V.
NOTE:
SERVICE PRECAUTION:
THE AREA ENCLOSED BY THIS LINE ( )
IS DIRECTLY CONNECTED WITH AC MAINS
VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN
ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE
HAZARD OF ELECTRIC SHOCK.
IS DIRECTLY CONNECTED WITH AC MAINS
VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN
ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE
HAZARD OF ELECTRIC SHOCK.
CAUTION
This circuit diagram is original one,
therefore there may be slight difference
from yours.
This circuit diagram is original one,
therefore there may be slight difference
from yours.
IMPOTANT SAFETY NOTE:
PARTS MARKED WITH «
» (
) ARE
IMPORTANT FOR MAINTAINING THE SAFETY
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR
MAINTAINING THE SAFETY AND PERFORMAN-
CE OF THE SET.
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR
MAINTAINING THE SAFETY AND PERFORMAN-
CE OF THE SET.
!
SAFETY NOTE:
1. DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
1. DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
2. SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
Power circuit drive. Q701 Drain
V. Division: 100V / Sec. Division: 5uS
V-output. F 5pin
V. Division: 10V / Sec. Division: 5mS
3
4
6
5
8
9
2
7
H-output. Q601 colector
H-drive. Q601 Base
V-output. F 4pin
Video out.IC201 54pin
H-sync. IC1001 19pin
V-sync. IC1001 24pin
Red cathode CRT socket 7pin
V. Division: 200V / Sec. Division: 20uS.
V. Division: 2.0V / Sec. Division: 20uS
V. Division: 2V / Sec. Division: 5mS
V. Division: 1V / Sec. Division: 20uS
V. Division: 1V / Sec. Division: 20uS
V. Division: 1V / Sec. Division: 5mS
V. Division: 20V / Sec. Division: 20uS
1
14
37GT-25H
Page 16
Page 15
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E
D
C
B
A
2
3
4
5
6
7
SCHEMATIC DIAGRAM (00 Version).
12
34
12
3
14
23
8
T700
Z0535BM
3
5
6
1
10
9
14
13
12
11
15
16
LED
C
H
+
C
H
-
V
O
L+
VOL-
4
56
IC501
MT1A / A
49
50
51
52
+5VB
AV
MUTE
POW
5V
SCL
KEY
VT
IC1001
SDA5552 A
IX1818BM
+150V
G2
FOCUS
PWB-B
DUNTK7284BMN2
CRT
VI
VB34EAC0136*N
H.V.
(0.8mA)
22.4KV
GND
R
GB
HEATER
4
3
2
1
(H)
150V
+7V
+2.5V
9
RESET
+20V
B
R
RI
FB
FBI
FB
B
R
SDA
LED
MUTE
AV/TV
FLY BA
H OU
T
VIDEO
SCL
+10V
BI
H PULSE
+105V
+3.3V
GI
G
G
AC 220-240V 50HZ
QACCB5008BMZZ
(G)
P702
N0207CE
L704
G0415BM
ADG COIL
C703
.01
(250V)
KZ0029CE
D703
DX0571BM
D701
DX0571BM
D704
DX0571BM
D702
DX0571BM
C704 .01
(250V)
KZ0029CE
R703
5.6
(5W)
(WKP)
R705
560K
(1/2W)
R704
560K
(1/2W)
C705
.01
(250V)
KZ0029CE
C726 470P
C718 220P
(2KV)
KZ0035CE
D718
(15V)
EX0419BM
R707
220.
Q702
BC338
H-TX0217BM
C709 .0033
C708
.068
(50V)
FZ4683BM
C707 .015
(63V)
FZ4153BM
D707
C5V6
EX0409BM
D719
DX0577BM
D709
DX0590BM
R709
33
C710
C721
.1
C725
220P
(2KV)
KZ0035CE
R702
220K
(1/2W)
D705
DX0539BM
D710 DX0577BM
D708
DX0507BM
R500
47K
R1083
330.
D1011
PX0104BM
S1001
K0079GE
S1002
K0079GE
S1003
K0079GE
S1004
K0079GE
R724
470
C715 .22
(50V)
FZ4224BMJ
D713
B3V9
EX405BM
R511
10K
C512 .001
R503
4K7
R504
5.6
(1/3W)
Q502
BD825
H-TX0140BM
D507
DX0045BM
C702 330nF
(275V)
FZ0192BM
R515
820
D503
4,7V
EX0490BM
R525 1K
R532 1K
D512
DX0045BM
R502
1K8
(1/2W)
C515 560P
D504 DX0045BM
Q509
BC337
H-TX0217BM
D501
DX0501BM
D502
DX0045BM
R501
1K
(1/2W)
R6 10
D
D
R434
1K
R412
470
R419
470
R1004 6K8
R1003 6K8
D1002
DX0045BM
R1001 22K
D1006
DX0045
D1007
DX0045
D1008
DX0045
D1009
DX0045
Q1004
2SC2412
R1026 10K
R1028
3K3
D602 DX00
R512
5.6
(1/3W)
R-XZ0109BM
L701
F0116BM
C728
.01
(250V)
KZ0029CE
PR701 P0001BM
R720
22K
D706 DX0045BM
R708 1K
(1/2W)
C723 .22
(50V)
FZ4224BMNJ
R1027 3K3
C706 68
(400V)
EZ0115BM
C719
220
(35V)
C502
100
(35V)
C501 220
(25V)
C514 220
(25V)
C521 10
(16V)
C519 100
(16V)
S701
P0612CE
F701
FS-C3226
T3.15A
(A)
P701
N0304CE
Q883
BF442
H-TX0180BM
R892
1K
D881
DX0045BM
D882
DX0045BM
D811
DX0045BM
D880
DX0045BM
C882 470P
C881 470P
Q871
BF422
H-TX0181BM
R893
1K
R885
2K7
(1/2W)
R883 2K7
(1/2W)
R887 2K7
(1/2W)
C880 470P
R894
1K
R879
470
R898
470
R886
15K
(2W)
(VV)
R888
470
C871
470P
Q872
BF422
H-TX0181BM
Q870
BF442
H-TX0181BM
R880
470
R881
470
C872
470P
C873
470P
C874 .001
(500V)
R519
10K
Q500
BC636
H-TX0112BM
R250
270
D714 (5.1V)
Q711
BC327
R737
1
(1/3W)
R713 330
2SC2412
Q704
R733
470
Q706
2SC2412KQ
Q709
BD825
TX0140BM
IC1002
24C04
IX1812BM
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
SC881
VD842CE
.
7
.
9
.
3
.
5
.
4
.
6
.
8
P883A
(L3)
QTIPM0017CEFM
1
P881A
(L2)
1
Q885
BF421
H-TX0180BM
Q887
BF421
H-TX0180BM
R899 470
P882
(K)
.
5
.
4
.
3
.
2
.
1
Q501
2SC2412KQ
C711
100
(160V)
Q1002
2SC2412
R1023
10K
R1020
10K
R1029 10K
R1002
22K
C757
10uF
(16V)
Q1007
2SC2412KQ
R415
470
D724
EX0152CE
R1088
4K7
R1089
10K
Q1010
2SC2412KQ
D1020
DX0508BM
R1032 1K
R839 22k
L702
P0144GE
3.3uH
L703
P0144GE
3.3uH
L710
(CF)
3.3uH
R711 1K
R729
4K7
D812
DX0045BM
R706 .47
(1W)
(NVV)
L881
12uH
(CF)
C713
1000
(16V)
C714
470
(10V)
C712
220
(16V)
D712 DX0574BM
R717
4.7
R275
2K2
C1030
1nF
R505
1K8
C1012
220nF
Q1006
2SA1037KQ
D755
3V0
EX0402BM
C517
.033
C804
33
(50V)
R516
4K7
Q701 H-TX0185BM
(3N80A)
R712
560
(TQ)
R884
15K
(2W)
(VV)
C878
10
(200V)
R882
15K
(2W)
(VV)
C876
.047
(2KV)
KZ0023CE
R533
270
R1069
4K7
(1/8W)
R1030
3K9
R1033
100
R1031
10K
15
37GT-25H
Page 17
Page 14
8
9
10
11
12
13
14
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F
E
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B
A
SCHEMATIC DIAGRAM (00 Version).
2
3
1.9
-1.6
-1.5
-1.5
0
-7.6
-1.6
-1.7
-5.6
9
2
5
68
3
10
7
11
4
H.V
T601
F2047BM
FOCUS
G2
TP601
10
4
56
3
2
1
IC501
MT1A / A
(DIP)
4
5
+5VB
V-B
FLY BACK
H OU
T
V-A
SDA
SCL
V-B
V-A
BI
RI
FBI
IR
+7V
GI
-10V
.
Q702
BC338
H-TX0217BM
C709 .0033
(50V)
FZ4332BMNJ
C708
.068
(50V)
FZ4683BM
C722
3300P
(4K)
KZ0106GE
R605 5.6
(1/4W)
R604 6.8
(1/4W)
R606
2.2
(1/2W)
Q602
BC635
H-TX0108BM
D619
DX0045BM
R632 470
(1/2W)
R603 1
(1/2W)
R-XZ0200BM
D609 DX0577BM
Q601
BU508DFI
H-TX0132BM
FB601
BLN-0037CE
C601
.0056
(1.5KV)
FZ0144BM
L601
4.7uH
(CF)
Q604
BC636
H-TX0112BM
R619 27
(1W)
(VV)
R616 27
(1W)
(VV)
C604 220
(10V)
D707
C5V6
EX0409BM
R709
33
C710
.001
R710 560
(1/2W)
D720 (4.7V)
EX0407BM
R714 100
D717
B75
EX0495BM
R716
27K
R724
470
FZ4224BMJ
D713
B3V9
EX405BM
Q708
BC338-40
H-TX0218BM
C511
2200P
R514 10K
.001
R529
1K
R530
3K3
R834
1K
R620
1K
(1/2W)
D620
DX0045BM
D604 DX0578BM
R623 390K
L604 22uH
(CF)
R618
1K
(1/2W)
R624
680K
R609
1.2
(1W)
(NVV)
D513 DX0045BM
D514
DX0045BM
R611
3K3
(1/2W)
R-XZ0242BM
D605
DX0577BM
R633
15K
R621
10K
C614 .01
D402
(7.5V)
EX0412BM
R1038
220
R1039
220
R1041
220
L201 47uH
(DF)
Q506
2SC2412KQ
Q505
BC547
H-TX0142BM
C503 68P
Q504
BC638
H-TX0131BM
D505
DX0501BM
R508
33
C504 68P
R503
4K7
Q503
2SA1037KQ
R506
1
(1/3W)
R-XZ0100BM
R504
5.6
(1/3W)
R-XZ0109BM
R407 47
(1/2W)
R507 560
(1/2W)
R510 15K
Q510
BC338
H-TX0217BM
R515
820
EX0490BM
D602 DX00
C603
.022
(50V)
FZ4223BMNJ
C609
.01
Q603
BC547
H-TX0142BM
C723 .22
(50V)
FZ4224BMNJ
C617
.1
(63V)
FZ9104BMNJ
R528 180K
C724
10uF
(16V)
C608
1
(160V)
100
(35V)
C505
4.7
(50V)
D714 (5.1V)
EX0408BM
R737
1
(1/3W)
R715
680
P601
(F)
N0505CE
.
1
.
2
.
3
.
4
.
5
P602
(H)
N0461CE
.
1
.
2
.
3
.
4
V-IN
V-OUT
.
17
.
18
.
19
.
20
.
21
D401
(7.5V)
EX0412BM
C620
.1
(50V)
FZ4104BM
C606
.47
(250V)
FZ6474BMJ
D723
DX0045BM
R718
33K
D715
(5.1V)
EX0408BM
C716
100
(16V)
R602
330
(1/2W)
IC701
PC123ZY1
4
1
2
3
C605
.1
(50V)
FZ4104BMNJ
D211
DX0577BM
R601
12K
L710
(CF)
3.3uH
R729
4K7
(1/4W)
(TQ)
R410
82
Q703
BC338
H-TX0217BM
R722
8.2M
(1/2W)
(UA)
R721
8.2M
(1/2W)
(UA)
C625
.22
(50V)
FZ4224BMNJ
2K2
C623
470P
(SL)
Q705
BC547
H-TX0142BM
C622
220
(10V)
R250
82
C717
.1
R505
1K8
R622
15K
R408
220
R531
100
C517
.033
R516
4K7
D610
DX0045BM
16
37GT-25H
Page 14
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4
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6
7
R
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P
O
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Page 17
SCHEMATIC DIAGRAM (01 Version).
+2.5V
44
47
46
3
4
5
6
7
8
9
10
11
12
13
14
+2.5V
6
+3.3V
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
32
1
RMC0001
R
M
C
U
0
222CE
U
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
RESET
ANA GN
D
ANA VCC
R
G
B
BLK
VCC2.5
GND
VCC
KEY
KEY
KEY
SDA
SCL
KEY
VT
OUT
5V
+7V
8
7
FRONT
VIDEO
FLY BACK
RESET
R
FB
H OU
T
B
VIDEO
SLOW
G
R613 100
R836
680
D802
DX0045BM
R838
820
R803 4R7
R901
1K
C825 .1
R1081
100
R1013
560
R1082
100
R1008
1K
R1007
220
R1006
220
FB1001
BLN-0020CE
004
412
R1075 10K
R1018 15K
L1002 12uH
R1022 10K
R904
0
L1004
12uH
R1073
2K2
R1021 22K
D1012
DX0045BM
R1066
10K
R1028
3K3
X801
4.43MHZ
B0115BM
R637
0
R814 100
R815 100
R810 100
R816 100
C235 1000
(10V)
R806 2.2
R802
Q801
2SC2412KQ
R612 15K
R615
15K
D603
DX0045BM
D602 DX0045BM
D301
DX0045BM
R317 1K
C306
2.2
(50V)
R314 4.7K
(1/2W)
R315
820
R307
100K
R303
100K
R302
33K
R309 10K
C302
47
(10V)
R306
1K
Q304
2SA1037KQ
R305 2.2
(1/2W)
R-XZ0204BM
R313 4K7
(1/2W)
R312 4K7
(1/2W)
Q303
2SC2412KQ
R308
100
R304 10K
R311
470
R310
470
L303
3.3uH
(DF)
J301
J0047CE
1
5
4
3
2
6
7
R1077 4K7
R1035 22K
R1034
15K
D1013
DX0045BM
R1048 4K7
(1/2W)
R1049 4K7
(1/2W)
R1059 4K7
(1/2W)
R903
47
Q901
2SC2412KQ
R1015
22K
L304 3.3uH (DF)
C304 100
(25V)
R1037 10K
C1002
100nF
C1008
22pF
C1009
22pF
C1033 1nF
C1005 100nF
C1028
1nF
C1011
5n6
C1023 220nF
C1024
150pF
C1026 100pF
C1003 100nF
C1027
100nF
C801
.1
C803
.1
C901 .22
C201
.047
C217
C805
.1(Z)
C607 39P
C307
.015
C305 .047
C303 .047
C1013
.047
C1016
.047
C816 .001
C802
.1
L202 12uH
(DF)
C827
100P
IC201
TDA8840
IX1630BM
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
BG
R
P402
(K)
.
1
.
2
.
3
.
4
.
5
P301
N0241CE
.
1
.
2
P301
80P-G5YB
.
1
.
2
IC1003
IX0037CE
C807
.022
C829
100P
R1072
1M
Q305
2SC2412KQ
C810
.1(Z)
R1078
470
Q301
BC337
H-TX0217BM
R1020
10K
R1080 3K3
R1029 10K
C1001 100nF
R1058
4K7
002
R809
100
C308
220
(10)
C1014
2.2uF
(50V)
C820
18P
CF301
C0023CE
C1004
47uF
(10V)
R801
100K
C909
4700p
X1001
6MHZ
B0100BM
C1032
330nF
R316 33K
Q1012
2SC2412
Q1001
2SC2412KQ
R1014
100K
C1015 100 nF
C1019 10uF
(16V)
R1017
47K
C226
100P
R902
220
FB301
BLN-0037CE
R1012
10K
C806
100
(16V)
C301
1
(50V)
Q1003
BF840
H-TX0113BM
1012
0nF
C309
1
(160V)
C906
.22
(25V)
D601
C3V3
EX0403BM
C804
33
(50V)
C828
100P
R318
15K
D1021
C5V1
EX0408BM
L1001
12uH
R607
4K7
R608
2K2
D403
IX0412BM
(7V5)
Q302
BC328
H-TX0218BM
R1005
220
R1069
4K7
(1/8W)
R201
1K
D441
DX0045BM
Click on the first or last page to see other 37GT-25 service manuals if exist.