Sharp LC-20B4E (serv.man10) Service Manual ▷ View online
25
LC-20B4E
24
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
V112 V176 V235 V255
TUNER
AUDIO
IC1905
I
2
C
MSP
IC3301
SC3901
IC1901
SC_L/RO
IC304
TV_V
IC3501
PAVCC(+13V)
V1.SY
VPC0
∼
7
I
2
C/UART
SYNC SIGNAL
IC2010
S
SY
SC
MICON
IC2001
VIDEO
V1_V
L_ERR
OUTCON
VCOM
AUDIO
V1.L/R
(AV2) INPUT
Q1602
Q1604
Q1606
Q1604
Q1606
REG
IC2003
J3701
DC13V
REG IC2004
L_ERR
INPUT
REG IC707
Q3707
PAVCC
Q3705
REG IC705
IC3702
DC/AC
INVERTER
DRIVE
Q6700
∼
6714
DC/AC
INVERTER
TRANS
T6700
∼
6709
I
2
C
Q3708
+32V
CONVERTER
IC702
TELETEXT
Q3709
+8V
CPU
IC1601
KEY
PWM IC3701
REG IC805
REMOTE
CONTROL
RECEIVER
REG IC704
REG IC1607
B12V1A
Q3703
REG IC1602
REG IC1605
ANTENNA
SCART
(AV1)
AUDIO IN
AUDIO OUT
VIDEO OUT
SDA/RXD
SCL/TXD
VIDEO
IN
SC_R/G/B
SC5001
J5003
J5001
(AV2) INPUT
(AV2) INPUT
SIGVCC
INVVCC
REG IC706
+
3.3V
+3.3V
+1.8V
+5V
+9V
DC/DC
CONVERTER
T3701
+34V
+5V
+3.3V
+3.4V
+3.3V
−
11V
+23V
+17V
CHROMA
SELECTOR
IC803
AMP
IC808
TV/AV
SELECTOR
IC806
AMP
IC808
AUDIO MAP
IC1902
SIF1
AI_L/R
ANA_IN1+
SC2_IN_L/R
SC1_OUT_L/R
SC1_IN_L/R
CVBS/SY_IN
R/G/B_IN
SC_IN
+2.5V
+3.3V
+5V
REG IC703
−
8V
VOLTAGE
−
16V
CVBS
R/G/B
FLASH 4M
IC1611
SRAM 2M
IC1612
OFL REVERSE
Q3606
INVVCC(+13V)
OFL
TEXT R/G/B /FBL
LAMP ERROR
DETECTOR
Q3601
∼
3605
HV1/2/3
CSCOM
P4004
P4001
BACK
LIGHT
LAMP
∼
P6704
P6700
P3601
P3602
R0
∼
7 G0
∼
7 B0
∼
7
PANEL
LCD
SC1202
SC1203
SC1204
V0 V7 V21 V64
AUDIO OUT
SPEAKER
HL/R
FLSP/FRSP
P3301
P3302
HEADPHONE
JACK
J5002
J3901
AUDIO ACTIVE FILTER
L/R_IN
POWER AMP
AO_L/R
DACM_L/R
I
2
C
I
2
C
DACA_L/R
AUDIO AMP
AUDIO AMP
SC2_OUT_L/R
VPC
IC801
V2VO
SYNC SEP
IC802
E
2
PROM
IC2008
E
2
PROM
CSYNC
I
2
C
UART
RESET
RESET
IC2006
IC2006
CONTROL SIGNAL
YIN0
∼
7
DPS
IC1201
OSD
R/G/B
OFL1
VPC
R/G/B/FB
REV
LEVEL
SHIFT
DAC1CS
MPCLK_5
MPDA_5
IC1101
POWER
GRADATION
BLOCK DIAGRAM
Display