Read Sharp LC-42DH77EC (serv.man6) Service Manual online
LC-32/42/46DH77E/RU/S
4 – 3
[3] SYSTEM BLOCK DIAGRAM (LC-42/46DH77E/RU/S)
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10
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5
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J
A
B
C
D
E
F
G
H
I
13
11
19
18
16
15
14
12
17
SYSTEM BLOCK DIAGRAM
4 or 5-Wavelength
BU5V
NOISE_FILTER
13V
STBY
INV_60V
AC-DET
SYS
(12pin)
PS_ON
AC_INLET
CONTROL
60V
PFC
13V
BU+5V
(15pin)
(41pin)
(6pin)
(6pin)
(6pin)
(3pin)
(3pin)
(4pin)
(4pin)
PNL+12V
PNL+12V
INV_60V
INV_12V
OFL1
STB
ERR
ERR
REG2
OFL2
INV_12V
INV_12V
AC-DET
OVP
SW.
INV
PNL_12V
IC2004
DET_POW3_D3V3
LCD_EN
REG2
EEPROM
SW_TMDS_D0P/N
RXD/TXD_DBCG
S24C508J
[DV] INTERFACE
D102
R/C
P2603
HP_PLUG
SLOWSW1
PC_RGB
LNB_SHORT
CVBS_IN_L/R
CONT_DET
TEST_MODE
Piogram
STBY_POW
DET_SYNC
TU_CVBS_OUT_MUTE
DEBUG
D3.3V
etc.
D103
CVBS/LR
BACK-UP_SYSTEM
DDC_1
Disclete
RS_ON
CNVss
TEST_MODE
PNL_IC2_EN
PC_RGB
EXE_LED
CVBS_MONI_OUT
MONITOR_L/R
SW_TMDS_D1
CIEN,CIDET
SC1_Y/C
SC1502
PDD[0:7]
MUTE
D3.3V
CONT_TEST
IR_PASS
AV_LINK
LED_G
SC1_IN_L/R
DDC_2
MUTE
LR_OUT
MAX3221
EXE_LED1
POWG_LED
BU3.3V
BU+5V
LVDS_OUT
BU+5V
7WH126FU
DET_POW1_13V
BU+3.3V
OPC
CVBS__IN
SW
OPC
OPC
RESET
COMP_IN_L/R
CEC_LINE
HDMI-4
N_SRESET
RS_BUF_CNT
YPbPr/LR
SW.
SC1FSW
D3.3V
PS_ON
TU1101
SW.
SC1_IN_L/R
AV_LINK
D_IF IN P/N
D5V
SLOWSW1
HV_MODE
AV_LINK_O
IR_SW.
RGB
OFL2
POW_SW
(PC)
PNL_WP
BU+3.3V
OPT_OUT
N_CPU_RST
J506
LINE REG
HDMI_2
SC1801(21pin)
IC9601
J3301
CVBS_IN
HDMI_3
POWR_LED
CVBS/LR
X2002
D1.8V
CVBS/LR
CPU_UATXD2_UCOM
SP
SPDIF_OUT
CPU_UARXD2_UCOM
ERR_L
KEY1
W_PROT_M
SC4401
To External
S+8V
PC_H/Vsync
Disclete
ERR_PNL
SC2_CVBS/Y
RGB
(41pin)
AC_DET
PM_REQ,CBOOTS
SC501
OFL1
P2701
SC2_IN_L/R
ANT_5V_SW
POW13V
SW_TMDS_D2
SC1503
IC8455
AUDIO_OUT
TUNER_CVBS
D3.3V
QSTEMP
Flash Memory
IC2008
SM_POW
RGB
MUTE_A_ALL
AV_OUT
IC8454
AHC1G08W
SC2_CVBS_Y
TS_CPU_IN
D3.3V
TVPOW
HDMI-2
PE
SC1_CVBS_Y
SC2_V_OUT
DDC_3
IC506
RC
Disclete
RS_ON
CEC_0
I2C1_SCL
X2001
OPT_OUT
(COMMON
PM_REQ,CBOOTS
(12pin)
J504
AIN0+/-,AIN1+/-,AIN2+/-,AIN3+/-,AIN4+/-,ACK+/-,
SC8452
LED_OPC
TUNER_OUT_L/R
RXD/TXD_CPU
TUNER
IC501
D_IF IN P/N
RESET
PNL_EN
RXD/TXD
BIN0+/-,BIN1+/-,BIN2+/-,BIN3+/-,BIN4+/-,BCK+/-
HP_L/R
I2C1_SDA
OPC+3.3V
CPU1.2V
LR_OUT
(MINI_PLUG)
SC1_CVBS/Y
TUNER_SDA/SCL
IC2009
HDMI-1
SIF
KEY2
CEC_I12
UR+13.5V
TC7SH00U
OPC
DET_SYNC
SPK_OUT
FS/
P2001
TUNER_OUT_L/R
SC2_Y/C
DET_COND
COMP_YPbPr
R
CEC_O12
Connector
S80927NM
TS_CI_IN
J505
SW
LED_R
SC2_Y/C
VCOM_WP
Debug &
AC_DET
EEPROM
HP
SLOWSW2
LED_OPC
SC503
CVBS BYPASS
DET_POW2_PNL12V
HP_L/R
BR24C21F
DET_COND
IC503
CVBS_YU_OUT
AV_LINK
TMDS_Rx/ I2C_SINK
CI_CEB, CI_RB
OFL1
INTERFACE)
IC3301
EXE_LED
SC1501
SC2_IN_L/R
KEY2
STB
CNVss
(9pin)
STB
IFAGC
IC2001
RXD,TXD_CPU
ANALOG_RGB
D_POW
RGB
D520
KEY1
TUNER_CVBS_SEL
BUSY/CE/EPM/SCLK
SPK_OUT_L/R
PNL_ROM_EN
D_POW
BR24S64F
TH2001
OPT OUT
MUTE
D1.05V
MONITOR_L/R
MAIN_SYSTEM
HC2G66DP
HDMI2/PC
Disclete
PC_H/Vsync
TUNER_OUT
T7SET08
AV_LINK_I
MUTE_A_ALL
G/B
PC/HDMI_L/R
RS232C TxRx
RS_BUF_CNT
BU+3.3V
J506
OFL2
MUTE
COMP_YPbPr
SC1505
Spliter
MUTE
UCOM_RST
VON
J501
SC1_V_OUT
HDMI-3
N_RESET
GPFSV51V
MONITOR_OUT_L/R
EEPROM
SC1_Y/C
VCOM_SCL/SDA
SDA.SCL(400Hz)
TS_CI_OUT
(10pin)
ERR
AHC1G08W
HDMI_1
CVBS_IN_L/R
20MHz
OPC+3.3V
TS_CPU_OUT
(10pin)
20MHz
CI_CNT_RESET
SIF
BU+3.3V
FS/FB
SC1FSW
USB_DP/N
LNB_SHORT
BD6538G
SLOWSW2
IFAGC
PC/HDMI_L/R
COMP_IN_L/R
IC8452
LCX157FT
DET
AUDIO(R/L)
CI_D[7:0] /CI_A[14:0]
SC502
ANT_POW
IC2007
USB
N_SRESET
SW_TMDS_CLKP/N
S156
MENU
MENU
S152
S153
(5pin)
CH-DOWN
CH-UP
INPUT
VOL-DOWN
S151
S157
S155
POWER
S154
VOL-UP
VOL-UP
(4pin)
27MHz
X4401
TUNER_CVBS
CI_DATA
(15pin)
CNVss
S+13.5V
AMP13V
IC2601
Spliter
HC2G66DP
LCD_PANEL
1920x1080
POWER_UNIT
PD
LW
LP
LCD PANEL UNIT
LCD_CONTROLLER
LB1
LB(CN7502A)
INVERTER_UNIT
LB2
LA(CN7501A)
LA
PL
PL
512Mbit
IC3502
IC4405
EXT4
R/C, LED UNIT
EXT3(COMP/AUD)
MUX
EXT8
CIRCUIT
IR
FLASH
Digital AV decode
CI Controller
IC1504
HDMI-SW
EXT1(CVBS/YC/RGB)
IC2701
LB(P9602)
SP AMP
MM1756AU
LW(P2601)
CI
IC101
POWER_SUPPLY
1066Mbit
IXC786WJ
IXC790WJ
TUNER OUT
LP(P2602)
MM1507XN
OPC
AUDIO_OUTPUT
EXT4/6
IC2002
IC8401
PD(P9601)
SENSOR
EXT6
SII91873
RS-232C
IXC721WJQZ
YDA148SZ
IC3501
EXT2(CVBS/YC)
IC508
EXT7
IXC773WJQZ
DDR2
DIGITAL
SP_L
RECEVER
MM1506XN
MONITOR_MICON
RMC101
USB
OUTPUT(AUDIO)
EXT5
MAIN UNIT
IXC790WJ
RA(P2003)
1066Mbit
MT8295
RA(P102)
SP_R
DDR2
MONITOR OUT
IC3302
IC504
IC507
KEY UNIT
KM(P151)
KM(P2004)
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