Sharp 28HW-53 (serv.man9) Service Manual ▷ View online
21
28HW-53H
MOTHER UNIT (F7240N7A) PWB COMPONENT LOCATION TABLES.
Copper Side.
5HI1R ;XP
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4
5HI1R ;XP
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4
4
4
4
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4
4
4
5
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5
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5
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22
28HW-53H
MOTHER UNIT (F7240N7A) PWB
COMPONENT LOCATION TABLES.
Copper Side.
5HI1R ;XP
<XP
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
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5
5
5
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6
POWER / AV UNIT (F7342N1)
PWB COMPONENT
LOCATION TABLES
Component side:
Copper side:
No parts
23
28HW-53H
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CRT UNIT (F7273N3) PWB COMPONENT LOCATION
TABLES:
Component Side. Copper Side.
Copper side:
DINAMIC FOCUS & PFC UNIT
(F7314N3) PWB COMPONENT
LOCATION TABLES:
(F7314N3) PWB COMPONENT
LOCATION TABLES:
Ref No
Xum
Yum
(EW)
101600 46736
(F)
130048 38862
(FF)
121158 38862
(L5)
83566 56134
(L6)
30226 54102
(PWA)
66294 57150
(PWB)
52070 57150
C1601
170688 12192
C1602
174498 12192
C1603
176276 20574
C1604
198628 38100
C1701
14732 52832
C1702
33782
9144
C1703
41402 39116
C1704
56134 20066
C1707
58928 46482
C1708
68326 40132
D1601
194818 45212
D1602
202438 45212
D1703
61214 28956
FB1701
56642 10922
FOCO
213995 32512
J12
48514 33020
Q1601
183007 32512
Q1701
43840 16510
R1601
190754 45212
R1602
131826 53848
R1603
171196 45466
R1709
38100 24130
R1710
53086 31750
T1602
151384 27432
T1701
18034 29718
Component side:
Ref No
Xum
Yum
C1705
54864 29718
C1706
46482 38100
D1701
24638 33274
D1702
27432 33274
IC1701
47752 30226
R1701
15494 45974
R1702
21844 45974
R1703
21844 40132
R1704
36322 54102
R1705
40894 51562
R1706
41402 46990
R1707
22352 25146
R1708
36068 25400
R1711
46482 40132
R1712
58674 30988
R1713
60452 27178
R1714
67056 28702
R1715
67056 35052
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.
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
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
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.
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.
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.
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.
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.
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
15.625KHz
400Hz
!
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