Sharp LC-22SV2E (serv.man2) Service Manual ▷ View online
29
6
5
4
3
2
1
A
B
C
D
E
F
G
H
LC-22SV2E
BLOCK DIAGRAM 2/2
MAIN BLOCK DIAGRAM
TUNER
MSP
SPEAKER
AUDIO
SPEAKER
IC1901
OUT AMP
L/R
IC1903
IC3305
OUTPUT
AV2
RCA L/R
AUDIO
L/R AUDIO
OUT AMP
OUTPUT
INPUT
IC3500
J3902,J3903
J2202
HEADPHONE
HEADPHONE
AV2
AMP
J2204
VIDEO IN
IC304
J2203
TV/AV
TO DIGTAL
SELECTER
(ME)
AV2
IC3402
SC2202
S-VIDEO IN
J2204
VIDEO
AMP
IC2200
AV1
SCART
INPUT/
OUTPUT
SCART
OUT AMP
TEXT RGB
IC3402
AMP
IC1620,1621
IC1620,1621
SCART or TEXT
TELETEXT
RGB SELECTER
CPU
SRAM 2M
IC3404
IC1601
IC1603
SCART or TEXT
FLASH 4M
BLANKING
IC1602
SELECTER
IC3403
MICON
TO DIGTAL
CONTROL
IC2001
(MC)
BUS SW
SC2001
IC3101
R/C,LED UNIT
R/C,LED
TO DIGTAL
OPC
(MA)
SC2201
OPERATION UNIT
LAMP ERROR
INVERTER GND
BACK
KEY
DETECTOR
P3701,P3702
LIGHT
OPERATION
Q3705,Q3706
(GA,GB)
Q3707,Q3709
E2P ROM
E2P ROM
RESET
IC2030
IC2030
IC2002
DC/AC TRANCE
T6551-T6562
DC13V
INV_Vc c
INPUT
IC3701
+31V
INVERTER
J3701
S_Vc c
DRIVE
+8V
Q6551-Q6562
DC-DC
CONVERTER
+9V
T3701
+5V
TO INVERTER
(PF)
-8V
P3705
PWM
IC3701
POWER SW
5V
Q751,Q752
REG
+5V
Q753
IC751
3.3V
REG.
+3.3V
IC752
STAND-BY
SW
+13V
Q3711,Q3712
B13V1A
3.3V
REG.
+3.3V
IC1606
5V
REG
+5V
IC1610
2.5V
REG.
+2.5V
IC1613
SIF
OFL
INV_VCC
INVERTER
UNIT
TXD/RXD
SCL/SDA
CSYNC
SCALLER CONTROL
SCSB,SCK,SSI,SRDYB,SSO
G/A CONTRO
MP_CS,DA,CLK
OSD CONTROL
OSD R/G/B,CK,BLK,HD,VD
TEXT
BLANKING
RGB CONTRO
L
TEXT RGB
RGB SCART IN
AV1 VIDEO IN
AV1 AUDIO
OUT L/R
AV1 VIDEO
OUT
AV1 AUDIO
IN L/R
V1_S Y
V2V0
TEXT_RGB
FSW1
RGB_ST
V2_V
V1_SC
V1_IN
V AV1
TV_ V
TXD/SCL
RXD/SDA
POWER AMP
30
8
7
10
9
6
5
4
3
2
1
A
B
C
D
E
F
G
H
LC-22SV2E
OVERALL WIRING DIAGRAM
OPERA
TION UNIT
1
KEY1
1
KEY1
1
VSY
1
V
SY
1
VL0
2
KEY2
2
KEY2
2
HSY
2
H
SY
2
VL64
DUNTKB598DE
3
PO
W1
3
P
O
W
1
3
V
A
C
T
3
V
A
CT
3
VL96
4P
O
W
2
4
P
O
W
2
4
V
A
C
T_CONT
4
V
A
C
T_CONT
4
VL128
5
GND
5
GND
5
S
CSB
5
S
CSB
5
VL160
6
S
CK
6
S
CK
6
VL192
ANALOG UNIT
7
S
SI
7
S
SI
DIGT
AL UNIT
7
VL224
8
S
RD
YB
8
S
RD
YB
8
VL256
DUNTKB522DE
9
S
SO
9
S
SO
DUNTKB525DE
9
V
H256
10
GND
1
0
GND
10
VH224
11
CSYNC
11
CSYNC
11
VH192
1
R/C
1
R
/C
12
DDCRESET
1
2
DDCRESET
12
VH160
R/C
, LED UNIT
2
+5V
2
+5V
13
GND
13
GND
13
VH128
3
GND
3
GND
14
SCL3
14
SCL3
14
VH96
DUNTKB597DE
4
TV_PO
W
4
TV_PO
W
15
SD
A3
15
SD
A3
15
VH64
5O
P
C
5O
P
C
16
GND
16
GND
16
VH0
6
RCIND/SLEEP
6
RCIND/SLEEP
17
OFL
1
7
O
FL
17
GND
7
O
PC_LED
7
O
PC_LED
18
GND
18
GND
18
GO0
8
FLASH
8
FLASH
19
SW
-SYNC
1
9
S
W
-SYNC
19
GO1
20
NC
20
NC
20
GO2
21
NC
21
NC
21
GO3
22
NC
22
NC
22
GND
23
GO4
24
GO5
25
GO6
1
S
IG_VCC
1
SIG_VCC
2
6
G
O7
2
SIG_VCC
2
SIG_VCC
2
7
G
ND
3
B
13V1A
3
B
13V1A
28
R
O
0
4
B13V1A
4
B
13V1A
29
R
O
1
5
N
C
5
NC
30
R
O
2
6
B
9V200MA
6
B9V200MA
3
1
R
O3
SPEAKER L
1
LSP
7
GND
7
GND
32
GND
2
GND
8
G
ND
8
G
ND
33
R
O
4
SPEAKER R
3
RSP
9
GND
9
GND
34
R
O
5
4G
N
D
10
GND
1
0
GND
35
R
O
6
11
GND
11
GND
36
R
O
7
12
B-8V1A
12
B-8V1A
37
GND
38
RE0
39
RE1
40
RE2
1
GND
1
GND
41
RE3
2
L
CD_CONT
2
L
CD_CONT
42
GND
3
GND
3
GND
43
RE4
4
DDC_RST2
4
D
DC_RST2
44
RE5
5
D
A
C
2_CS
5
D
A
C2_CS
4
5
RE6
6
D
A
C
1_CS
6
D
A
C1_CS
46
RE7
7
GND
7
G
ND
47
Y
O
BI7
8
V
SH_OUT
8
V
SH_OUT
48
Y
O
BI6
9
V
SH_IN
9
V
SH_IN
49
Y
OBI5
10
GND
10
GND
50
Y
O
BI4
11
MP_CLK
11
MP_CLK
51
Y
O
BI3
12
MP_D
A
12
MP_D
A
52
Y
O
BI2
13
GND
1
3
GND
53
Y
O
BI1
14
MP_CS
1
4
MP_CS
15
OSD_B
1
5
O
SD_B
16
OSD_G
16
OSD_G
17
OSD_R
1
7
O
SD_R
1
C
SCOM
18
OSD_VD
18
OSD_VD
2
CSCOM
19
OSD_BLK
1
9
OSD_BLK
3
VCOM
20
OSD_CK
20
OSD_CK
4
V
COM
21
OSD_HD
2
1
O
SD_HD
5
GND
22
P-MUTE
2
2
P
-MUTE
6
VLS+13V
7
VLS+13V
8
VSH+3.3V
9
VSH+3.3V
10
LBR
11
GND
12
BO0
13
BO1
14
BO2
15
BO3
KK
RM
SA
MA
MB
MC
RM
KK
SCN2
SCN1
MA
MB
MC
1
V2V0
1
2
GND
2
3
T
EXT_R
3
4G
N
D
4
5
TEXT
G
5
ME
V2V0
GND
TEXT_R
GND
TEXT
G
ME
31
17
16
19
18
15
14
13
12
11
10
LC-22SV2E
7
VLS+13V
8
VSH+3.3V
9
VSH+3.3V
10
LBR
11
GND
12
BO0
13
BO1
14
BO2
15
BO3
16
GND
17
BO4
18
BO5
19
BO6
20
BO7
21
GND
22
BE0
23
BE1
24
BE2
25
BE3
26
GND
27
BE4
28
BE5
29
BE6
1
H_GND1
30
BE7
2
H_GND2
31
GND
3
H
_GND3
32
GE0
4
H_GND4
33
GE1
34
GE2
35
GE3
36
GND
1
H
_GND5
1
INV_VCC
37
GE4
2
H_GND6
2
INV_VCC
38
GE5
3
H
_GND7
3
INV_GND
39
GE6
4
H_GND8
4
INV_GND
40
GE7
5O
F
L
41
GND
42
REV
1
M
RD
Y
1
REG
43
LS
2
B
USY
2
MRD
Y
44
SPIO
3
CN VSS
3
S
D
A
1
45
SPOI
4
R
ESET
4
S
CL2
46
GND
5
RXD
5
G
ND
47
CK
6
TXD
6
48
GND
7S
C
L
K
49
POLA
8S
W
50
POLB
9
VCC
10
GND
1
CS-COM
2
CS-COM
3
V
GH+34V 0.5V
4
V
GH+34V 0.5V
5
G
SP2
6
P
O
WER
1
H
A1
INVER
TER UNIT
1
INV_VCC
7G
C
K
2
H
A2
2
INV_VCC
8
G
LBR
3
H
A3
DUNTKB526DE
3
INV_GND
9G
N
D
4
INV_GND
10
GND
5O
F
L
11
OEM
12
NC
1H
B
1
13
VSH+3.3V
2H
B
2
14
VSH+3.3V
3H
B
3
15
GSP1
16
VEE-6.0V
17
VEE-6.0V
18
V
G
L-6.0V
1
HC1
19
V
GL-6.0V
2H
C
2
20
GND
3
HC3
21
GND
22
GND
23
Y
OBI1
24
Y
OBI2
1H
D
1
25
Y
O
BI3
2H
D
2
26
Y
O
BI4
3H
D
3
27
Y
O
BI5
28
Y
OBI6
29
Y
O
BI7
30
VLS+13V
PF
LA
LB
LC
LD
GA
TP2
TP1
GB
PF
GD
1
V2V0
1
2
GND
2
3
TEXT_R
3
4
GND
4
5
TEXT_G
5
6
GND
6
7
TEXT_B
7
8
G
ND
8
9
V_A
V1
9
10
GND
1
0
11
B_ST
11
12
GND
1
2
13
G_ST
13
14
GND
1
4
15
R_ST
15
16
GND
16
17
V1_SC
1
7
18
GND
18
19
V1_IN
19
20
GND
20
21
V2_V
21
22
FSW1
22
ME
V2V0
GND
TEXT_R
GND
TEXT_G
GND
TEXT_B
GND
V_A
V1
GND
B_ST
GND
G_ST
GND
R_ST
GND
V1_SC
GND
V1_IN
GND
V2_V
FSW1
ME
BA
CK LIGHT
32
LC-22SV2E
VOLTAGE MEASUREMENT CONDITION:
1. The voltages at test points are measured on
exclusive AC adaptor and the stable supply voltage
of AC 120V. Signals are fed by a color bar signal
generator for servicing purpose and the above
voltages are measured with a 20k ohm/V tester.
of AC 120V. Signals are fed by a color bar signal
generator for servicing purpose and the above
voltages are measured with a 20k ohm/V tester.
INDICATION OF RESISTOR & CAPACI-
TOR:
TOR:
RESISTOR
1. The unit of resistance “
1. The unit of resistance “
Ω
” is omitted.
(K=k
Ω
=1000
Ω
, M=M
Ω
).
2. All resistors are ± 5%, unless otherwise noted.
(J= ± 5%, F= ± 1%, D= ± 0.5%)
3. All resistors are 1/16W, unless otherwise noted.
4. All resistors are Carbon type, unless otherwise
4. All resistors are Carbon type, unless otherwise
noted.
C
: Solid
W
: Cement
S
: Oxide Film
T
: Special
N
: Metal Coating
CAPACITOR
1. All capacitors are
1. All capacitors are
µ
F, unless otherwise noted.
(P=pF=
µµ
F).
2. All capacitors are 50V, unless otherwise noted.
3. All capacitors are Ceramic type, unless otherwise
3. All capacitors are Ceramic type, unless otherwise
noted.
(ML): Mylar
(TA): Tantalum
(PF): Polypro Film
(ST): Styrol
CAUTION:
This circuit diagram is original one, therefore there may be a
slight difference from yours.
slight difference from yours.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH “
å
” (
) A R E
IMPORTANT FOR MAINTAINING THE SAFETY OF
THE SET. BE SURE TO REPLACE THESE PARTS
WITH SPECIFIED ONES FOR MAINTAINING THE
SAFETY AND PERFORMANCE OF THE SET.
THE SET. BE SURE TO REPLACE THESE PARTS
WITH SPECIFIED ONES FOR MAINTAINING THE
SAFETY AND PERFORMANCE OF THE SET.
DESCRIPTION OF SCHEMATIC DIAGRAM
Click on the first or last page to see other LC-22SV2E (serv.man2) service manuals if exist.