LG 55GA7800-CB Schematic
中国印刷P/NO :MFL67866601(1308-REV00)
系列 :LC37G
型号名 :55GA7800-CB
注意：
维修电视机以前请仔细阅读本维修手册
液晶电视机
维修手册
http://biz.LGservice.com
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软件升级
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电路图 .
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- 2 -
Ω
Ω
1.5 K / 10 0.15 uF
1000 ohms/volt
0.75 volt RMS
1.5 Kohm/10W
To Instrument’s
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
0.15uF
Ω
- 3 -
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1 Market
China
PAL D/K : VHF/UHF 1~62, CATV 1~4
1
规格性能
1. 适用范围.
此规格仅适用于 LC37G 基板的 LG 液晶电视机
2. 规格
无特殊要求各个部品 按照如下方法测试
2.1
T 温度 : 25±5℃ (77±9℉), CST : 40±5℃
2.2
湿度 : 65±10%
2.3
电压: 标准输入电压 (100~220V@ 50 for CHINA) (100~240@ 50/60 FOR HONGKONG)
*每个型号的标准输入电压都在产品上有标注
2.4
每个产品部品的规格和性能都与 BOM 中相应的 P/NO 的图纸和性能相同
2.5
调整前，接收器必须先操作 5 分钟
3. 测试方法
3.1 性能:根据 LGE TV 测试标准
3.2 其它规格要求
安全: UL, CSA, CE, IEC 规格
EMC: FCC, ICES, CE, IEC 规格
无线 : Wireless HD 规格 (可选)
4. 电路规格
一般规格
序
号
2
项目 规格 备注
Broadcasting system
1) PAL-I
2) PAL-DK
3) NTSC-M
4) DTMB
5) DVB-C(CHINA Only)
[CHINA]
PAL I : VHF/UHF 1~69, CATV 1~47
NTSC M : VHF/UHF 2~78, CATV 1~71
DTMB: 1 to 57
DVBC: 52.5Mhz ~ 866Mhz
DTMB : DMB-T (Multi Carrier) + ADTB-T (Single Carrier)
RGB
-PC à
Spec out
序
号
Receiving system
3
4 Video Input (1EA) PAL, NTSC
Component Input
5
(1EA)
6 RGB Input
7 HDMI Input (4EA)
8 Audio Input (1EA) Component/AV common L/R Input
9 SDPIF out (1EA) SPDIF out
10 USB (3EA)
项目 规格 备注
▶ DTMB
(Carrier, Code Rate, Constellation, Frame Header,
Interleaving)
※China
- MODE1 : 3780, 0.4, 16QAM, PN945, 720, 9.626Mbps
- MODE2 : 1, 0.8, 4QAM, PN595, 720, 10.396Mbps
- MODE3 : 3780, 0.6, 16QAM, PN945, 720, 14.438Mbps
- MODE4 : 1, 0.8, 16QAM, PN595, 720, 20.791Mbps
Analog : Upper Heterodyne
Digital : COFDM, QAM
Y/Cb/Cr
Y/Pb/Pr
HDMI1-DTV/ARC
HDMI2-DTV
HDMI3-DTV
HDMI4-DTV/MHL
EMF, DivX HD, For SVC
(download)
- MODE5 : 3780, 0.8, 16QAM, PN420, 720, 21.658Mbps
- MODE6 : 3780, 0.6, 64QAM, PN420, 720, 24.365Mbps
- MODE7 : 1, 0.8, 32QAM, PN595, 720, 25.989Mbps
※ Hong Kong
- 3780, 0.4/0.6, 4/16/64QAM, PN945, 720
▶ DVB-C
- Symbolrate :
4.0Msymbols/s to 7.2Msymbols/s
- Modulation :
16QAM, 32-QAM, 64-QAM, 128-QAM and 256-QAM
AV gender jack 1EA
Component Gender 1EA
PC(HDMI version 1.4)
Support HDCP
JPEG, MP3, DivX HD
Analog ( D-SUB 15PIN )
11 Ethernet Lan Jack
12
IR Blaster
IR Blaster jack
5.外部输入模式
2D 模式
分量输入(Y, CB/PB, CR/P
No
1.
2.
3.
4.
5.
6.
7. 1280*720 44.96 59.94 74.176 HDTV 720P
8.
9. 1280*720 45.00 60.00 74.25 HDTV 720P 50Hz
10.
11. 1920*1080 33.72 59.94 74.176 HDTV 1080I
12.
13.
分辨率
720*480i 15.63 59.94 13.500 SDTV, DVD 480I(525I)
720*480i 15.73 60.00 13.514 SDTV, DVD 480I(525I)
720*480p 31.47 59.94 27.000 SDTV 480P
720*480p 31.50 60.00 27.027 SDTV 480P
720*576i 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz
720*576p 31.25 50.00 27.000 SDTV 576P 50Hz
1280*720 45.00 50.00 74.250 HDTV 720P
1920*1080 28.125 50.00 74.250 HDTV 1080I 50Hz,
1920*1080 33.75 60.00 74.25 HDTV 1080I
1920*1080 56.25 50 148.5 HDTV 1080P
)
R
H-freq(kHz) V-freq.(Hz) Pixel clock Proposed
No
H-freq(kHz)
V-
freq.(Hz)
Pixel
Proposed
Remark
Single Frame
L
1920*1080 67.5 60.00 148.5 HDTV 1080P
14.
3D 模式
RF 输入
分辨率
1
1920*1080
2
1280*720
3D 输入模式
No Side by Side Top & Bottom Checkerboard
1
R
45.00 60 74.25
45.00 60 74.25
clock(MHz)
Sequential
HDTV 1080I
HDTV 720P
Frame Packing Line Interleaving
R
L
Side by Side
Top & Bottom
Side by Side
Top & Bottom
Column
Interleaving
Model
Tool
1
Tool 2
Tool 3
Tool 4
Tool 5
Tool 6
Tool
7
USB 软件下载
1）电视处于关机状态
2）将升级程序重命名为lg_ota.zip , 放于USB根目录下
3）将USB设备连接至电视USB1 端口
4）按工厂遥控器 B-tooth 键3-4秒开机
程序升级开始。
软件升级
(5) 更新结束后，电视将自动重启
下载结束后，您需要再调整TOOL OPTION.
1. 按下工厂服务遥控器上的"IN-START"按键.
2.选择"Tool Option 1" 然后按 “OK”按键.
3.输入数字 (每个型号都有他们的数字.)
55GA7800-CB 33241 27323 21280 13805 6157 1322 30411
47GA7800-CB 33239 27323 21280 13805 6157 1322 30411
,IC703,IC704),IC702
Debugger Debugger
P3000P3000
MICOM_DEBUG/MICOM_RESET
Power B/DPower B/D
IR & KEYIR & KEY
,IC703,IC704),IC702
P2301P2301
P4102P4102
2Gbit*4+1Gbit
( IC700,IC701
INV_CTL,RL_ON
KEY1/2 ,IR
LED_B/GP4_LED_R
EEPROM_SCL/SDA
DDR3
NVRAMNVRAM
((32KB32KB, IC10, IC1022))
AMP_RESET N
MicomMicom
IC3000IC3000
M0/1/2_DDR[A0~A14]/[B0~B2]/CLK/CLKN/CKE/
CSN/ODT/RASN/CASN/WEN/RESET_N/DML
M0/1/2_DDR_DQSL_P/N/DQ[0~7]
I2C_ SDA/SCL5
SOC_RESET
I2C_SDA3/SCL3
LG1152DLG1152D/A/A
(IC10(IC100/1010/101))
I2C_SDA1/SCL1
SPI_DO/CS/SCLK/DI
FRC_RESET
SOC_TXA [0-4] N/P, CLKN/P
SOC_TXB[0-4] N/P,CLKN/P
DDR3_DQU/DQL[0-7]
P7600(local dimming)P7600(local dimming)
SPI FLASH
( IC9601,2M)
URSA 5URSA 5
IC9600IC9600
DDR3
( IC9700
TXA [0-4] N/P, CLKN/P
TXB[0-4] N/P,CLKN/P
TXC [0-4] N/P, CLKN/P
TXD[0-4] N/P,CLKN/P
DDR3_A[0-13],DDR3_BA0/1/2,DDR3_M CLK…
P7100(51PIN)P7100(51PIN)
P7101(41PIN)P7101(41PIN)
EMMC EMMC
8GB8GB
IC8100IC8100
EMMC_DATA[0-7]
EMMC_CLK/CMD/RST
AUD_LRCH/LRCK/SCK, AMP_Mute
I2C_SDA1/SCL1
AUD_MASTER_CLK
Audio AMPAudio AMP
NTPNTP--7400L7400L
IC5400IC5400
SPK_L+/-
SPK_R+/-
Speaker
P5400
TDSNTDSN--G251DG251D, , TU6501TU6501
HDMI_RX0+/-,
RX1+/-,RX2+/-,CLK+
/-
I2C_SCL5/SDA5/
SPDIF_OUT_AR
C/HDMI_INT/HD
MI_SW_RESET/D
DC_SCL/SDA
MHL_DET
IC3201
HDMI
SWITCH
SII9587C
NUC
D0/1/2+/-, HDMI_HPD_1,CK+/-_HDMI1
HDMI_HPD_1
DDC_SCL1/SDA1/ARC_HDMI_OUT
D0/1/2+/-, HDMI_HPD_1,CK+/-_HDMI1
HDMI_HPD_2
DDC_SCL2/SDA2
D0/1/2+/-, HDMI_HPD_1,CK+/-_HDMI1
HDMI_HPD_3
DDC_SCL3/SDA3
D0/1/2+/-, HDMI_HPD_1,CK+/-_HDMI1
HDMI_HPD_4/MHL_DET
DDC_SCL4/SDA4
HDMI1 In ARC
(JK3202)
HDMI2 In
(JK3200)
HDMI3 In
(JK3201)
HDMI4 In
(JK3203)
HP JK3403
SPDIF JK3602
CVBS GenderJK3800
Comp GenderJK3801
ETHERNET
LAN
(JK5000)
HP_LOUT_AMP
HP_ROUT_AMP
SPDIF_OUT
AV1_CBVS_IN, AV1_CVBS_DET ,AV1_L/R_IN
COMP1_Y/Pb/Pr, COMP1_DET
EPHY_TDP/TD
N/RDP/RDN
IC6100IC6100
AMPAMP
Ethernet ICEthernet IC
IC5200IC5200
HP_LOUT_MAIN
HP_ROUT_MAIN
EPHY_REFCLK/CRS_DV/RXD0/1
EPHY_MDC/EN_TXD0/1
MDIO
LG1152DLG1152D
(IC10(IC1000))
USB_HUB_IC_IN_DP
/DM/DM2/DP2
WIFI_DM/WIFI_DP
M_REMOTE_RX
M_REMOTE_TX
M_RFModule_RESET
M_REMOTE_CTS
M_REMOTE_RTS
IC4306
CTL1/OCD1/CTL2/OCD2
USB HUBUSB HUB
IC4200IC4200
USB_DM1/DP3/CTL1/OCD3
USB_DM1/DP1
USB_DM1/DP2
P4300
P4302
P4303
P4100
TUNER AND CI BLOCK
RF_SWITCH_CTL/; /TU_RESET ; I2C_SCL6/SDA6; TUNER_SIF ; TU_CVBSRF_SWITCH_CTL/; /TU_RESET ; I2C_SCL6/SDA6; TUNER_SIF ; TU_CVBS
FE_TS_DATA[0FE_TS_DATA[0--7], FE_TS_CLK, FE_TS_SYNC, FE_TS_VAL7], FE_TS_CLK, FE_TS_SYNC, FE_TS_VAL
TDSN-C251D
TU6501
P6200P6200
CI_IN_TS_DATA[0CI_IN_TS_DATA[0--7]7]
CI_IN_TS_CLKCI_IN_TS_CLK
CI_IN_TS_SYNCCI_IN_TS_SYNC
CI_IN_TS_VALCI_IN_TS_VAL
CI_TS_DATA[0CI_TS_DATA[0--7]7]
CI_TS_SYNCCI_TS_SYNC
CI_TS_VALCI_TS_VAL
CI_TS_CLKCI_TS_CLK
CI_DATA[0CI_DATA[0--7]7]
CI_ADDR[0CI_ADDR[0--1414]];;
/PCM_OE;/PCM_OE;
/PCM_WE;/PCM_WE;
/PCM_IORD;/PCM_IORD;
/PCM_IOWR/PCM_IOWR
/PCM_REG/PCM_REG
AR904/AR905
/AR903
resister
IC903
buffer
AR911~AR911~
resisterresister
AR915AR915
TPO_DATA[0TPO_DATA[0--7]7]
TPO_CLKTPO_CLK
TPO_SOPTPO_SOP
TPO_VALTPO_VAL
TPI_DATA[0TPI_DATA[0--7]7]
TPI_SOPTPI_SOP
TPI_VALTPI_VAL
TPI_CLKTPI_CLK
IC904IC904
EB_ADDR[0EB_ADDR[0--1414]]; ;
EB_OE_N; EB_OE_N;
EB_WE_N;EB_WE_N;
EB_BE_N1EB_BE_N1;;
EB_BE_N0EB_BE_N0
CAM_REG_NCAM_REG_N
LG1152LG1152
(IC10(IC1000))
EB_DATA[0EB_DATA[0--7] 7]
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