Sharp LC-20B5E (serv.man16) Service Manual ▷ View online
29
LC-20B5E
17
16
19
18
15
14
13
12
11
10
TUNER Unit
INVERTER Unit
OPERATION Unit
30
LC-20B5E
8
7
10
9
6
5
4
3
2
1
A
B
C
D
E
F
G
H
BLOCK DIAGRAM
TUNER
SDA/SCL
TU2201
STANDARD
TV_V
SDA/SCL
SC1_OUT_L/R
DACA_L/R
SC2201
SCART
SC_L/R OUT
IC3210
SC1_IN_L/R
IC3201
SC2_OUT_L
V 1_L/ R
12S_DA_IN1/ OUT
SDA/SCL
IC3202
V1_V
V1_V
SDA/SCL VPC_YIN0~7
SDA/SCL
IC3401
IP_AD0~10
R/G/B/FB IN
VOUT
VD_
IC8502
IP_DQ0~
J2201
S
V2_SY/SC
R / G /B
( AV2) INPUT
V2V0
SYNC SEP
SC_R/G/B/FB
IC1602 IC8803
MICON
J2202
V2_V
R/ G/ B/ FB
SDA/SCL
IC2001
(AV2) INPUT
TELETEXT
TXD/RXD
TXD/RXD
IC1601
CVBS
AUDIO
V2_L/R
RESETI
(AV2) INPUT
IC2003
SRAM 2M
SDA/SCL
J3701
DC12V IC1611 IC1610
SDA/SCL
IC2005
SOUND_VCC
+31V
DC/ DC
+ 9V
+35V
IC3701
+23V
+5V
IC701
-7V
REG IC1701
-8V
SIGVCC
REG IC8503
REG IC5004
REG IC5409
+1.8V
V CC
IC703
+3.3V
REG IC2004
REG
+1.5V
+12V
+3.3V
REG IC1702
+4V
INV+B
REG IC1603
REG
SW REG
REG
+ 2.5V
IC702 IC3203
REG
+5V
P4050
KEY
REG
AV1_L/R
PROCESSOR
IC704
HEAD
AUDIO PROCESSOR
AUDIO OUT
AUDIO IN
VIDEO OUT
VIDEO IN
INPUT
REG
SW REG
SW REG
-12V
CONVERTER
FB SW
VPC_R/G/B/FB
SDRAM 64M
DECODER
DACM_L/R
ANTENNA
VIDEO
VIDEO
CSYNC
E
2
PROM
IC1801
FLASH 4M
VIDEOCONVERT
MULTI
SOUND
PROCESSOR
ANA_IN1+
AUDIOAMP
SIF_OUT
AVSW
IC8801
(AV1)
VIDEO
31
LC-20B5E
17
16
19
18
15
14
13
12
11
10
SDA/SCL
AUDIO
IC3301
IN 1/2
L/R+OUT
SPEAKER
P3302
CA_L/R
IC3304
SOUND_VCC(+12V)
P3303
IC3305
HP L/R
SC2_OUT_L/R
HEADPHONE
J4021
IC3211
JACK
AUDIO OUT
J2203
R/G/BDD0~7
OFL1/2
OFL REVERSE
LCD
Q3701,3702
CONTROLLER TEMP
P9201
VD_V/HS
IC1201
2
IP_DQ0~31
REV
IC1208
OFL1/2
R0~7 G0~7 B0~7
GRADATION
V0 V7 V21 V64
L CD
SC1201
MICON
MP_DA MP_CLK
IC1101
V112 V176 V235 V255
PANEL
SC1202
IC2001
REV
VCOM
V/HOUT
ESETI
YIN0~7
2003
YOUT0~7
PROCESSOR
IC5401
DA/SCL
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
IC5001
IC5003
IC5404
EA0~15
PC
SC5401
IC2005
VPC_0~7
CARD
IC5006
FLASH 32M
IC5402
IC8602
IC5403
PCA0~15
12SDA_OUT
SIGNAL
12SDA_IN2
PROCESSOR
12SDA_IN1
IC5201
ED0~15
IC5405
IC5406
PCD0~15
2004
REG IC2002
+ 3.3V
LMP_ERR
+ 5V
Q6706,6713,6717
BACK
P6700
702
+3.4V
LIGHT
~P6704
L AMP
603
REG IC1604
+ 2.5V
INVERTER
HV1/3
+ 5V
OFL1/ 2
DRIVE
REG IC1605
+ 3.3V
Q6700~6705
T6700~6704
Q6707~6712
R /C
P4001
REG IC1802
+1.8V
Q6714~6716
INV+B(+12V)
&
OPC
SDRAM 64M
SDRAM 64M
EA0~2
SC1204
HEADPHONE AMP
POWER AMP
64M
AUDIO ACTIVE FILTER
DAC1CS OUTCON
L_ERR
CSCOM
SENSOR
TRANS
DC/AC
DC/AC
LAMP ERROR
MEDIA
CM_L/R
IC8603
E
2
PROM
C8606
DETECTOR
EOCONVERTER
AUDIO_L/ROUT
AUDIOAMP
12SDA_OUT
32
LC-20B5E
8
7
10
9
6
5
4
3
2
1
A
B
C
D
E
F
G
H
OVERALL WIRING DIAGRAM
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