28HW-53 (serv.man8). Part 5 - Schematic diagrams (24-32) — Sharp TV Service Manual (repair manual)

Model
28HW-53 (serv.man8)
Pages
9
Size
1.17 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / CTR / Part 5 - Schematic diagrams (24-32)
File
28hw-53-sm8.pdf
Date

View Sharp 28HW-53 (serv.man8) Service Manual online

24
28HW-53H
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 HAZ-
ARD OF ELECTRIC SHOCK.
DESCRIPTION OF SCHEMATIC DIAGRAM
NOTE:
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 mF, unless otherwise noted
(P= mmF).
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.
SAFETY NOTE:
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.
IMPORTANT SAFETY NOTE:
PARTS MARKED WITH  «
»  (
 
                      
) ARE
IMPORTANT FOR MAINTAINING THE SAFETY
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR MAINTAIN-
ING THE SAFETY AND PERFORMANCE OF THE
SET.
CAUTION
This circuit diagram is original one, therefore
there may be light difference from yours.
215 Vp-p    50Hz
45 Vp-p 113 KHz FM
WAVEFORM MEASUREMENT CONDITION:
Colour bar generator signal of 70 dB from RF input.
9
10
11
12
13
580V
1.3 KV  15.625KHz
4 Vp-p 15.625KHz
41 Vp-p 15.625KHz
1.8 Vp-p
50Hz
3.3V 50Hz
19V   50Hz
20.5 Vp-p  50Hz
400Hz
1.15 Vp-p
15.625KHz
400Hz
!
1
2
3
4
8
7
6
5
25
28HW-53H
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
SCHEMATIC DIAGRAM OF CRT SOCKET UNIT (F7273)
R
G
B
H.V.
27.5 KV
1
2
3
1
2
3
4
5
6
7
8
1
3
4
5
2
+10
V
+10
V
+10V
DUNTK7273
B
M
Z
1
FOCUS
+175V
+13V
+150V
+175V
+12V
SCREEN
R1806
220
R1811
220
R1816
220
C1801
100nF
C1805
220nF
C1806
10nF
C5405
220nF
Q5411 2SC2412
Q5412 2SA1037
Q5410
2SC2412
R1802
390
R1803
75
R1804
100
Q902
2SC2412
Q903
2SA1037
R1805
1K
C1822
22pF
R1801
220
Q901
2SC2412
R1807
390
R1808
75
R1835
1K
C1810
1nF
R1833
1K
C1802
5pF
R1817
1K2
C1803
15pF
R1818
1K2
R1819
1K2
C1804
15pF
Q905
2SC2412
R1810
1K
C1809
1nF
Q906
2SA1037
Q904
2SC2412
R1809
100
C1821
22pF
R1813
75
R1815
1K
Q908
2SC2412
Q909
2SA1037
R1812
390
R1814
100
C1820
22pF
Q907
2SC2412
C1811
10uF
(250V)
R1830
4K7
R5412
47
R5431
390
R5432
33
R1823
2K2
R1824
2K2
R1825
2K2
R5435
330
R5434
1K
R5433
100
R1839
10
R1820
82K
(1/2W)
R1821
82K
(1/2W)
R1822
82K
(1/2W)
D1809
1N4004
DX0501
D1805
C12
EX055
4
C1812
2,2uF
(250V)
C1815
100nF
C1807
1000uF
(16V)
C1814
4.7nF
PB3DE472Z
(2KV)
R1832
680
(1/2W)
R1834
680
(1/2W)
R1836
680
(1/2W)
C1808
1nF
R1831
1K
(H
)
(PU)
N
0341
C5415
22uF
(160V)
C5410
10nF
C5407
10nF
R5413
22
C5408
4n7
500V
R5415
1K2
R5420
56
(1/4W)
C5414
22uF
(160V)
R5422
2.7
(1/4W)
C5412
100uF
(16V)
R5424
220
Q5407
A1837
R5423
2.7
(1/4W)
R5416
68K
R5417
12K
R5418
68K
R5419
1K2
C5411
10nF
C5409
4n7
R5414
22
R5428
100
(1/4W)
R5421
56
(1/4W)
C5413
100uF
(16V)
Q5408
C4793
R5425
470
1W
D5403
DX0551
D5410
DX0551
Q5406
2SA1037
Q5405
2SC242
D5404
DX0501
1N4004
D5405
DX0501
1N4004
D1804
DX0505
Q912
TX
0130
C1825
10nF
250V
C1824
4,7nF
(K)
 
IC1801
IX
1803
STV51
0
9
4
3
1
14
13
11
10
12
6
7
9
15
2
5
8
TRC
VB76ERF3113*N
1
9
10
6
11
5
7
1
1
 
6
11
5
7
R1837
2M2
C1813
10nF
 
8
10
9
L1801
SHARP
E
L
E
C
T
R
O
N
IC
A ESPANA   S.A.
NOMBRE
C
O
D
IG
O
ESCALA
MODELO
FECHA
REVISIONES
N
2
3
4
5
6
FECHA
A-3
23-07-200
1
M
O
D
U
L
E
   C.T.R.
28HW53H
REALIZ
A
D
O
VERI
F
IC
A
D
O
APROBADO
1
Q
P
W
B
F
7
2
73B
M
N
3
Digitally signed by Adolfo Fernandez
cn=Adolfo Fernandez, ou=CAD GLOBAL NETWORK, o=SHARP, c=ES
Date: 2001.07.23 17:35:34 Z
Reason: This document is ready for approval
D
igitally signed 
b
y Castillo, Fco.
D
N: cn=Castillo, 
F
co., 
o
=Engineering 
D
ept., 
o
u=SEES, c=ES
D
ate: 
2
001.07.24 
1
4:11:58 +01'00'
R
eason: I have 
reviewed this 
d
ocument
Digitally 
signed by 
Castillo, Fco.
DN: 
cn=Castillo, 
Fco., 
o=Engineering 
Dept., 
ou=SEES, 
c=ES
Date: 
2001.07.24 
14:12:17 +
01'00'
26
28HW-53H
  SCHEMATIC DIAGRAM OF MOTHER UNIT (K7240)
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
Page 27
Page 28
27
28HW-53H
    SCHEMATIC DIAGRAM OF MOTHER UNIT (K7240)
8
9
10
11
12
13
14
I
H
G
F
E
D
C
B
A
Page 26
Page 29
Digitally signed by Adolfo Fernandez
cn=Adolfo Fernandez, ou=CAD GLOBAL NETWORK, o=SHARP, c=ES
Date: 2001.07.26 12:03:40 Z
Reason: This document is ready for approval
Digitally signed 
by Castillo, Fco.
DN: cn=Castillo, 
Fco., 
o=Engineering 
Dept., 
ou=SEES, c=ES
Date: 
2001.07.26 
12:12:54 +01'00'
Reason: I have 
reviewed this 
document
Digitally signed 
by Castillo, Fco.
DN: cn=Castillo, 
Fco., 
o=Engineering 
Dept., 
ou=SEES, c=ES
Date: 
2001.07.26 
12:13:17 +01'00'
Reason: I have 
reviewed this 
document
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Here you can view online or download Sharp 28HW-53 (serv.man8) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp 28HW-53 (serv.man8) CTR. Information contained in Sharp 28HW-53 (serv.man8) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).