Read Sharp LC-42DH77EC (serv.man6) Service Manual online
LC-32/42/46DH77E/RU/S
4 – 2
[2] SYSTEM BLOCK DIAGRAM (LC-32DH77E/RU/S)
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A
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SYSTEM BLOCK DIAGRAM
4 or 5-Wavelength
BU5V
OFL
60V
13V
NOISE_FILTER
60V
13V
REG2
STBY_CONV.
(9pin)
60V
60V
FB
AC-DET
MAIN_CONV.
(12pin)
PS_ON
AC_INLET
CONTROL
ADIM
ERR
60V
PFC
13V
BU+5V
STB
OVP
(41pin)
KEY2
AMP13V
CVBS_YU_OUT
CNVss
P2001
TUNER_CVBS
SC1503
I2C1_SCL
(41pin)
BU+3.3V
SC1_CVBS_Y
Spliter
20MHz
OFL2
IC2009
To External
SC2_IN_L/R
RXD,TXD_CPU
DET_SYNC
D3.3V
PC/HDMI_L/R
S+8V
MONITOR_OUT_L/R
SC1_IN_L/R
LR_OUT
HDMI-1
(MINI_PLUG)
USB
D_IF IN P/N
AC_DET
POW_SW
IR_PASS
OPT_OUT
TUNER_CVBS
7WH126FU
MUTE
RGB
D102
TS_CI_OUT
SW_TMDS_D1
(12pin)
LNB_SHORT
IC2004
STB
CEC_O12
MONITOR_L/R
CVBS_MONI_OUT
W_PROT_M
HP_L/R
P2701
LNB_SHORT
MUTE
MENU
COMP_IN_L/R
CONT_DET
FS/FB
SW_TMDS_CLKP/N
TS_CI_IN
R/C
RS_BUF_CNT
POWR_LED
SC1_V_OUT
HP_L/R
TEST_MODE
X2002
PNL_ROM_EN
POW13V
D_POW
SPDIF_OUT
OFL1
SW_TMDS_D0P/N
TUNER_OUT_L/R
CVBS/LR
D520
SC1FSW
SIF
D3.3V
MAIN_SYSTEM
D5V
BU+3.3V
R
VCOM_SCL/SDA
J504
CI_CEB, CI_RB
VOL-DOWN
REG2
BU+5V
BACK-UP_SYSTEM
RXD/TXD_DBCG
UR+13.5V
COMP_YPbPr
IC9601
TUNER_OUT
I2C1_SDA
MUTE
FS/
N_CPU_RST
EEPROM
INTERFACE)
AC_DET
BUSY/CE/EPM/SCLK
RS232C TxRx
D3.3V
J3301
AV_LINK
CI_D[7:0] /CI_A[14:0]
S2004
MAX3221
HDMI_1
AV_LINK
J506
IC8455
P2603
(PC)
PM_REQ,CBOOTS
D1.8V
Flash Memory
QSTEMP
DET_SYNC
G/B
PNL_WP
AIN0+/-,AIN1+/-,AIN2+/-,AIN3+/-,AIN4+/-,ACK+/-,
Connector
TVPOW
SP
(10pin)
S2007
D3.3V
RGB
SW
D_POW
HDMI_2
SC2_Y/C
SC1_CVBS/Y
SLOWSW1
BU3.3V
SC2_V_OUT
AV_OUT
CVBS/LR
D3.3V
CIEN,CIDET
IFAGC
IR_SW.
KEY2
OPC+3.3V
PC_H/Vsync
CH-DOWN
N_SRESET
IC8454
AHC1G08W
PNL_IC2_EN
OPC
BD6538G
X2001
27MHz
LED_OPC
RXD/TXD_CPU
SC1FSW
IC2601
SC2_Y/C
SW.
RESET
AV_LINK_I
EXE_LED1
POWG_LED
T7SET08
CEC_LINE
SC8452
AUDIO_OUT
DDC_1
EEPROM
J505
D_IF IN P/N
IC2008
MUTE
BR24S64F
20MHz
TU_CVBS_OUT_MUTE
COMP_IN_L/R
(10pin)
SLOWSW2
CVBS/LR
DET_COND
CVBS BYPASS
HC2G66DP
SW
VCOM_WP
SDA.SCL(400Hz)
SC1_IN_L/R
OPC+3.3V
etc.
BR24C21F
CVBS_IN_L/R
BU+5V
TEST_MODE
SLOWSW2
N_RESET
IC3301
SC2_CVBS_Y
SPK_OUT
S24C508J
CPU_UATXD2_UCOM
X4401
SC502
OPT_OUT
SC2_CVBS/Y
USB_DP/N
DDC_3
SC2_IN_L/R
SC501
CVBS__IN
VOL-UP
DDC_2
Disclete
RS_BUF_CNT
D1.05V
(COMMON
SIF
STB
Disclete
HP_PLUG
Spliter
HDMI-2
Disclete
SC4401
GPFSV51V
SC1_Y/C
HDMI-3
HV_MODE
CI_DATA
ANALOG_RGB
S2002
TUNER_SDA/SCL
EXE_LED
DET_POW3_D3V3
EEPROM
IC8452
LCX157FT
DET_POW1_13V
RXD/TXD
SW_TMDS_D2
CONT_TEST
SC1502
HDMI-4
CVBS_IN_L/R
UCOM_RST
S80927NM
RC
CNVss
SM_POW
PC_RGB
POWER
PM_REQ,CBOOTS
TMDS_Rx/ I2C_SINK
TS_CPU_OUT
TC7SH00U
Disclete
CI_CNT_RESET
SC503
Debug &
KEY1
OPC
J506
IFAGC
RGB
ERR
YPbPr/LR
TUNER
PNL_EN
INPUT
LED_OPC
ANT_POW
LVDS_OUT
S2001
S+13.5V
SC1_Y/C
PS_ON
CPU_UARXD2_UCOM
N_SRESET
STBY_POW
HC2G66DP
[DV] INTERFACE
ANT_5V_SW
CNVss
CH-UP
D103
PE
IC503
SLOWSW1
BU+3.3V
AUDIO(R/L)
HDMI2/PC
Piogram
S2006
HP
SC1505
OPC
IC2001
HDMI_3
DET_COND
DET
CPU1.2V
BU+3.3V
KEY2
S2003
DEBUG
CVBS_IN
SPK_OUT_L/R
RGB
AV_LINK
IC501
TS_CPU_IN
SC1801(21pin)
TU1101
SC1501
EXE_LED
MONITOR_L/R
(15pin)
IC506
OPT OUT
OFL2
BIN0+/-,BIN1+/-,BIN2+/-,BIN3+/-,BIN4+/-,BCK+/-
LCD_EN
S2005
TH2001
AHC1G08W
PC_RGB
MUTE
PC_H/Vsync
(9pin)
PDD[0:7]
CEC_0
LR_OUT
IC2007
LED_G
COMP_YPbPr
AV_LINK_O
TUNER_CVBS_SEL
RESET
ERR_L
OPC
J501
MUTE_A_ALL
RS_ON
RS_ON
DET_POW2_PNL12V
PC/HDMI_L/R
ERR_PNL
LINE REG
VON
SW.
MUTE_A_ALL
OFL1
LED_R
KEY1
TUNER_OUT_L/R
CEC_I12
(15pin)
LCD_PANEL
1920x1080
LB
POWER_UNIT+INVERTER
CONTROLLER
BACKLIGHT
IC7501
PD
CCFL
BD9883FV
LW
LP
LCD PANEL UNIT
LCD_CONTROLLER
IXC721WJQZ
IC2701
EXT1(CVBS/YC/RGB)
CIRCUIT
MONITOR OUT
Digital AV decode
IC8401
1066Mbit
IC1504
IC4405
DIGITAL
TUNER OUT
EXT6
OPC
USB
RA(P102)
DDR2
PD(P9601)
MM1506XN
IC3302
EXT5
IC3501
EXT2(CVBS/YC)
MM1507XN
AUDIO_OUTPUT
512Mbit
IXC786WJ
IR
RA(P2003)
R/C, LED UNIT
FLASH
EXT8
EXT4
IXC790WJ
RECEVER
RMC101
HDMI-SW
IC2002
SP_L
MM1756AU
SP AMP
IC101
MAIN UNIT
EXT7
MT8295
MUX
SP_R
POWER_SUPPLY
EXT4/6
IC508
IXC790WJ
SII91873
MONITOR_MICON
LP(P2602)
IC507
OUTPUT(AUDIO)
YDA148QZ
IXC773WJQZ
CI
LW(P2601)
1066Mbit
LB(P9602)
RS-232C
DDR2
CI Controller
EXT3(COMP/AUD)
SENSOR
IC504
IC3502
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