LC-20B2E (serv.man5). - Part 3 - Chassis layout, Block diagram Notes on schematic diagrams (18-26) - Sharp TV Service Manual (repair manual)

Model: LC-20B2E (serv.man5)
Pages: 5 Few pages! See other manuals at the bottom of the first or last page.
Size: 87.3 KB
Type: PDF
Document: Service Manual
Brand: Sharp
Device: TV / LCD / - Part 3 - Chassis layout, Block diagram Notes on schematic diagrams (18-26)
File: lc-20b2e-sm5.pdf
Date: 2018-11-20

Next: Sharp LC-20B2E (serv.man6) Service Manual

Read Sharp LC-20B2E (serv.man5) Service Manual online

19
LC-20B2E
18
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
JACK Unit
INVERTER-A Unit
INVERTER-B Unit
OPERATION Unit
R/C RECEIVER Unit
TUNER Unit
CHASSIS LAYOUT
MAIN Unit (Side A)
MAIN Unit (Side B)

21
LC-20B2E
20
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
BLOCK DIAGRAM
Ë
TUNER Block Diagram
I
2
C    bus
AV1
INPUT/
OUTPUT
TUNER
INPUT
AV
OUTPUT
AV1
INPUT/
OUTPUT
ANT
INPUT
AV
OUTPUT
SCL, SDA
H
V
R_VPC, G_ VPC, B_VPC
SUBCLK
SUBIN
SUBOUT
M/S IN
M/S OUT
V OUT VPC
SC1 OUT L/R MSP
V IN3 VPC
SC2 IN L/R MSP
V IN2 VPC
AN IN1 MSP
SC2 OUT L/R MSP
SC902
I
2
C
I
2
C
I
2
C
OSD
SC802
DC 13V
SIG Vcc
INV Vcc
PA Vcc
HR
HL
P904
ANALOG SWITCH
I4
MICON
I9
ANALOG SWITCH
I13
R_OSD, G_OSD, B_OSD
H
V
TUNER
W7, W14
SOUND(L/R)
RF
AV1 SOUND(L/R)
AV1 PICTURE
R_SCART, G_SCART, B_SCART
AV1 SOUND OUTPUT(L/R)
AV1 PICTURE OUTPUT
SCL, SDA
I
2
C
I
2
C
E
2
PROM
I2
ROM
I3
MEMORY
I6
DC JACK
HEADPHONE
JACK
J3702
SC903
J902
J903

23
LC-20B2E
22
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
Ë
MAIN Block Diagram
LAMP
T5701~T5702
DC/AC
TRANCE
LAMP ERROR
DET
L_ERR
COMMON DRIVE
IC1109
CSCOM
LCD
PANEL
V0,V16,V32
V48,V64
DAC
IC1101
MP_CLK, MPDA, DAC1CS
CS
GRADUATION
POWER FOR
LCD
IC1102~IC1108, IC1110
R0~R5, G0~G5, B0~B5, CK
FRONT SPEAKER
L/R
FLSP
FRSP
GCK
PA VCC
AUDIO
AMPLIFER
IC3305
PA DC12V
ANALOG MULTIPLEXER
IC1205
L/R
REVERSE
IC303
FIFO
IC1202
LPF
IC903
AUDIO
AMPLIFER
IC304
LCD
CONTROLLER
IC1201
OFL1
DC/AC
INVERTER
DRIVE
Q3603
Q5701~Q5703
INV VCC
INV
DC12V
KEY
REMOTE CONTROL
RECEIVER
RESET
IC2002
CS
E
2
PROM
IC2004
I
2
C
I
2
C
I
2
C
I
2
C
MICON
IC2001
MP_CLK, MPDA, DAC1CS
CONTROL SIGNAL
LLC1, LLC2, FIELD
VSY
HSY
UV0~UV7, VP_Y0~VP_Y7
DACM_L/R
DACA_L/R
MSP
IC901
VPC
IC801
HSY
ANALOG
SWITCH
IC2007
HSY2
HD
CSYNC
+5V
+31V
+14V
+8V
+38V
+16V
+9V
+5V
-8V
+3.3V
+3.3V REG
IC752
IC201
Q204
Q202
Q203
+5V REG    IC751
DC/DC
T701
PWM
IC702
INV DC 13V
PA DC 13V
PA VCC
INV VCC
SIG VCC
DC 13V
OSD
S INPUT
AV2 INPUT
AV1
INPUT/
OUTPUT
TUNER
INPUT
HR
HL
AV
OUTPUT
P901
OSDHD
V1 SC
V1 SY
V1 IN
V1 L/R
V2 VO
V2 LO/RO
V2 V
V2 L/R
TV   V
SIF
SC2 OUT L/R
SC902
J5001
SC5001
OSDVD
OSDR, OSDG, OSDB
SUBCLK, SUBIN, SUBOUT, M/S IN, M/S OUT
SC801
CSYNC
SYNC SEPARATE
IC401
SC
AV3
VO
AV2
AV1
BUFFER
IC902
TV/AV
SELECTION
IC402
I
2
C    bus
SCL, SDA
I
2
C
P2004

25
LC-20B2E
24
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
O
VERALL WIRING 
DIA
GRAM
MONOS
GND
SIF
B31V
GND
SCL1
SDA1
GND
V2 L
V2 R
GND
V2LO
V2RO
GND
SC2OUTL
SC2OUTR
GND
V2VO
GND
V2VO
GND
TV_V
GND
SCY
B12V1A
GND
OFL
LMUTE
HSYNC_SW
GND
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
MA
PAVCC
PAVCC
N. C
PAGND
PAGND
SIGGND
SIGGND
N. C
SIGVCC
SIGVCC
1
2
3
4
5
6
7
8
9
10
MB
OPTION
IREM
MRDY
B5VA
SUB_CLK
SUB_IN
SUB_OUT
MIS_IN
MIS_OUT
OSDCK
OSDVD
OSDHD
B5V500MA
TEXTBLK
TEXTB
TEXTG
TEXTR
GND
GND
VIDEO
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
MT
MONOS
GND
SIF
B31V
GND
SCL1
SDA1
GND
V2 L
V2 R
GND
V2LO
V2RO
GND
SC2OUTL
SC2OUTR
GND
V2VO
GND
V2VO
GND
TV_V
GND
SCY
B12V1A
GND
OFL
LMUTE
HSYNC_SW
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
MA
GND
SCL0
SDA0
SCL1
SDA1
RSIG
JST
1
2
3
4
5
6
7
TA
PAVCC
PAVCC
N. .C
PAGND
PAGND
SIGGND
SIGGND
N. C
SIGVCC
SIGVCC
1
2
3
4
5
6
7
8
9
10
MB
V1IN
VGND
V1_L
V1_R
SGND
V1_SY
V1_SC
1
2
3
4
5
6
7
MV
LIGHT COLD
LIGHT COLD
LIGHT COLD
1
2
3
IB
LIGHT COLD
LIGHT COLD
LIGHT COLD
1
2
3
IC
L SP
PA GND
1
2
 
R SP
PA GND
1
2
 
IREM
B5VA
POW
GND
L_ERR
RC_IND
1
2
3
4
5
6
MR
IREM
B5VA
POW
GND
L_ERR
RC_IND
1
2
3
4
5
6
MR
MT
IR_EM_OUT
IR_EM
MRDY
B5VA
SUB_CLK
SUB_IN
SUB_OUT
MIS_IN
MIS_OUT
NC
V
H
B5V500MA
FB_VPC
B_VPC
G_VPC
R_VPC
GND
GND
VIDEO-VPC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VCOM
VCOM
DGND
CSCOM
CSCOM
SGND
V0
V16
V32
V48
V63
DGND
3.3V VSH
3.3V VSH
5V VLS
5V VLS
DGND
R5
R4
R3
R2
R1
R0
DGND
G5
G4
G3
G2
G1
G0
DGND
B5
B4
B3
B2
B1
B0
DGND
CK
DGND
SPIO
SPOI
LBR
HG
DGND
YOBI8
YOBI7
YOBI6
YOBI5
YOBI4
YOBI3
YOBI2
YOBI1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
LS
VLS
VLS
DGND
DGND
DGND
DGND
DGND
VGL
VGL
VGL
VSH
VSH
VGH
VGH
U/D
GSP
POWER
GCK
CSCOM
CSCOM
YOBI1
YOBI2
YOBI3
YOBI4
YOBI5
YOBI6
YOBI7
YOBI8
DGND
DGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
LG
INV Vcc
OFL
INV GND
1
2
3
VE
INVGND
INVGND
1
2
VD
T
E
R
M
I
N
A
L
U
N
I
T
R
U
N
T
K
0
7
0
4
C
E
Z
Z
V1IN
VGND
V1_L
V1_R
SGND
V1_SY
V1_SC
1
2
3
4
5
6
7
MV
JACK UNIT
DUNTKA699DE
R/C RECEIVER UNIT
OPERATION UNIT
DUNTKA696DE
MAIN UNIT
INVGND
INVGND
1
2
VD
H_L
GND
H_R
NC
1
2
3
4
MH
H_L
GND
H_R
NC
1
2
3
4
MH
INV Vcc
OFL
INV GND
1
2
3
VF
B
A
C
K
L
I
G
H
T
DUNTKA700DE
LIGHT HOT
LIGHT HOT
LIGHT HOT
1
2
3
HV
INV Vcc
OFL
INV GND
1
2
3
VE
INVERTER-A UNIT
DUNTKA400DE
LIGHT HOT
LIGHT HOT
LIGHT HOT
1
2
3
HV
INV Vcc
OFL
INV GND
1
2
3
VF
INVERTER-B UNIT
DUNTKA430DE
L
C
D
S
O
U
R
C
E
L
C
D
G
A
T
E
LMRDY
SCL1
SDA1
GND
MRDY
1
2
3
4
5
MC
POW2
POW1
KEY1
KEY2
GND
1
2
3
4
5
MS
POW2
POW1
KEY1
KEY2
GND
1
2
3
4
5
MS
DUNTKA6980DE

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Download Sharp LC-20B2E (serv.man5) Service Manual (Repair Manual)

Here you can read online and download Sharp LC-20B2E (serv.man5) Service Manual in PDF. LC-20B2E (serv.man5) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp LC-20B2E (serv.man5) LCD. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.

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