DOWNLOAD Sharp 28KF-84H (serv.man18) Service Manual ↓ Size: 5.58 MB | Pages: 80 in PDF or view online for FREE

Model
28KF-84H (serv.man18)
Pages
80
Size
5.58 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / CTR
File
28kf-84h-sm18.pdf
Date
PREV: Sharp 28KF-84H (serv.man17) Service Manual

Sharp 28KF-84H (serv.man18) Service Manual ▷ View online

45
28KF-84H
BLOCK DIAGRAM
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
T
H
 201
TUNER
SAW
SF 201
SF 202
SAW
IF
IC 2
0
1
T
D
A 
988
6
AV-1
21 PINS
SCART
Q723 
Q724 
T701
SWITCHED MODE
POWER SUPPLY
MAIN REG. 
KA431
+150V
ST-BY REG.
KA431
+12V
OSD
MICROCONTROLLER
IC
6001
SDA5550
VIDEO
PROCESSOR
IC
 600
7
VSP9402
DISPLAY & 
DEFLECTION
PROCESSOR 
IC
 600
6
 SDA9380B
IC303
M
S
P
 3
410 
G
S
O
UND
PR
OC
ES
S
O
R
+16V
-16V
+16V
-16V
TDA7480
TDA7480
C.R.T.
H.V.
VERT.
DEFLECT.
COIL
HORIZ. 
DEFLECT.
COIL
H
D
IGI
T
A
L
  MO
DUL
E
 TV
Te
xtP
RO
OSD
IC6002
FLASH
MEMORY
NVM
IC6003
A
UDIO
A
UDIO
RG
B
+13V
Q 502
-13V
TDA 7480L
Q 503
VERTICAL
POWER
VER
T
IC
A
L
F
L
YBA
C
K
RG
B
CRT 
M
O
D
U
L
E
HEATER
H.V.
+13 V
-13 V
+200 V
+25 V
H
O
RIZO
NTA
L
F
L
YBA
C
K
T
R
AN
SF
OR
M
E
R
T601
RG
B
A
UDIO
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B
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RRIE
R
C
VBS
IF
REG.
IC202
+33V
Q 601
HO
RIZO
NTA
L
 
D
E
FL
E
C
TIO
N
Q 602
EW
MO
DUL
A
T
O
R
EW
DRI
V
E
R
IC 601
H
. 
DRIV
E
R
Q 605
Q 613
EW
H.O
U
T
IC708
LM317T
Q 710
IC704
CURRENT
LIMITER
Q796
Q706
IC 706
M 1000
IR     
DETECTOR
PFC
IC701
Q701
T7
0
2
EMI
FILTER
2
3
0
V 
AC
 50H
z
ST-BY
D6001
Q6005
D6006
Q6007
SC 703
D723
+8V
+12V
IC 301
IC 302
FRO
NT M
O
D
U
L
E
SVM
SVM
M
A
IN
S 
AR
EA
L
R
Y-
C
S-
VI
DE
O
ST-BY
VI
D
E
O
VI
D
E
O
F
R
O
N
T  MO
DUL
E
 
28 
/ 
32K
F-
84H
 B
LOC
K
 D
IA
GR
A
M
 (
GA-200 CHASSIS)
SCREEN
FOCUS
+13V
ROTATION
-13V
AGC
FRONT VIDEO
T 1602
DYNAMIC MODULE (ONLY 32")
U
V
1316/
A 
1-2
IC 706
IC 707
+16V AUDIO
-16V AUDIO
+12V
+5.5V
-6V
+150
V
1.8V
+3.3V
+2.5V STBY
+3.3V STBY
+8V
+3.3V
+150
V
+180
V
+13V
+1.8V
+5V
+3.3V
+5V STBY
+3.3V STBY
+5.5V
+13V
+8V
+3.3V STBY
+2.5V
+5V
+5V
+200
V
-13V
+13V
+13V
-13V
+13V
+5V
-6V
+5V
.
+12V
+12V
+150
V
+25V
FUSE
AUDIO OUT L
AUDIO OUT R
IC 3
0
4
M
5
218L
HEADPHONE CONECTOR
IC 5
0
2
BA4558
V
 DRI
V
E
R
IC850-1-2
TD
A
6
1
1
1
RGB
AMPLIFIERS
IC 501
IC 1601
I2C
I2C33
I2C
I2C33
I2C
I2C
I2C
46
28KF-84H
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TROUBLESHOOTING TABLES
*Although the checking of these parts could be right, they may be partially damaged. So if the problem remains proceed
 to replace all parts.
       Test Point
xx
47
28KF-84H
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       Test Point
xx
48
28KF-84H
*   XXJF74E and XXKF84H models don’t have a stereo led. Please refer to “LED FLASHING CODES” (Page 13).
       Test Point
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xx
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