Check “power on” pin is high

Standard Repair Process Detail Technical Manual

	Error	B. Power error _No power	Established	2012. 12 .06
LCD TV	symptom	B. Power error _No power	date	2012. 12 .06
LCD TV	Content	Checking method when power is ON	Revised		A19
			Revised
			date
			date

24 Pin (Power Board ↔ Main Board)

SMAW200-H24S


Power on	2	Inverter On/off

3.5V	4	PWM Dim #1
3.5V	6	PWM Dim #2
GND	8	GND

24V	10	24V
GND	12	GND

12V	14	12V
12V	16	24V
GND	18	GND

GND	20	GND
GND	22	L/DIMO_VS

L/DIM0_MOSI	24	L/DIM0_SCLK

Copyright © 2013 LG Electronics. Inc. All rights reserved.	50 / 88	LGE Internal Use Only
Only for training and service purposes	50 / 88

Page 123

Image 123

LG Electronics 32LA62**-Z* Standard Repair Process Detail Technical Manual, Check “power on” pin is high, SMAW200-H24S

Contents

LED TV MODEL 32LA62** 32LA62**-ZSERVICE MANUAL READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICING PRECAUTIONS CONTENTSCONTENTS SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE SAFETY PRECAUTIONS Electrostatically Sensitive ES Devices SERVICING PRECAUTIONS Removal IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement 3. Test method SPECIFICATION4. Model General Specification 1. Application range DVB-S QPSK 2 ~ 45Msymbol/s Symbolrate 4.0Msymbols/s to 7.2Msymbols/ssymbolrate DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s 5. Component Video Input Y, Pb, Pr 6.2. PC mode 6. HDMI Input 6.1. DTV mode 7.1. HDMI 1.4b 3D supported mode automatically 7.5. USB Input 3D supported mode manually 7.2. HDMI Input1.37.3. RF Input3D supported mode manually 7.4. RF Input 3D supported mode automatically 7.9. 3D Input mode 7.6. HDMI-PC Input 3D supported mode manually7.7. DLNA Input 3D supported mode manually 7.8. Component Input3D 3D supported mode manually 2. Designation ADJUSTMENT INSTRUCTION3. Automatic Adjustment 1. Application Range 3.5. CI+ Key checking method 3.3. LAN PORT INSPECTIONPING TESTSET PC 3.4. Model name & Serial number Download 4. Manual Adjustment 3.6. WIFI MAC ADDRESS CHECK4.1. EDID DATA 4.2.1. Overview 4.2. White Balance Adjustment4.2.4. Adj. Command Protocol 4.1.2. 2D EDID 4.2.5. Adj. method 4.2.6. Reference White balance Adj. coordinate and color temperature4.2.7. ALELF & EDGE LED White balance table 4.5. 3D function test 4.4. Magic Motion Remote control test4.6. Wi-Fi Test 4.3. Local Dimming Function Check 8. Audio 7. GND and Internal Pressure check5. Tool Option selection 6. Ship-out mode checkIn-stop After downloading, have to adjust Tool Option again 9. USB S/W DownloadService only reserved DIAGRAMBLOCK LGE2122 EXPLODED VIEW Model Option EAX64797001* LD33B EAX64872101* LA33BNVRAM X-TAL IC105 LGE2122A2M13 PLACE AT JACK SIDEIC105 LGE2122A2M13 ZD500 PLACE AT JACK SIDE PLACE AT MAIN SOC SIDEPLACE AT IC6000 IC703 K4B4G1646B-HCK0 DDR512MBSSIC701 K4B4G1646B-HCK0 Only for training and service purposes +5VNormal PANELPOWERPowerDET FROM LPB & PSU GP4 High/MID Power SEQUENCE Renesas MICOMFor Debug MICOM MODEL OPTION HDMI3 SIDE 2011.11.21 SPDIFSPDIF OUT JACK HIGH / MID JACKCOMMON UART FOR DEBUG AV/COMPONENT REAR 1/16W MAX 0.4AMREMOTE&WIFIWAFER AR4100 IC4306 OCP USB2/3USB2 MAX 1.5A USB3 MAX 1.5A IC4500 USB1OCP USB1 MAX 1.5A 2011.10.26 Full Scart18 Pin GenderJK4600 SCART GENDER Ethernet Block LANVERTICAL2012.03.08 AMPMUTEPWRDET 0x54 SCART AUDIO MUTE IC6000AZ4580MTR-E1 EARPHONE AMP 18pF HEADPHONE AMP2011.09.29 CI POWER ENABLE CONTROL CI SLOT2011.10.31 +5VNORMAL B-CAS SMART CARD INTERFACE+3.3VNORMAL TDA8024TT Vout=0.6*1+R1/R2 TDSS-G501DB TU6600TU6601 TU6602 RS-232C Control INTERFACE JP6800JP6801 Ouput trace widths should be sized to conduct at least 2A DVB-S2 LNB Part AllegroOptionLNB Input trace widths should be sized to conduct at least 3A LVDSHIGHMID LVDS51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT Connector I2CSCL1 L/DIMOUT8P R7602 LOCAL DIMMINGP7600 12507WR-08L L/DIMOUT8P R7601 10K L/DIMOUT8P L/DIM0SCLKPWR L/DIM0MOSIPWR R7603 T-Con POWER BLOCKTHIS IS REVERSE PATTERN LEVEL SHIFTER BLOCK LGE Internal Use Only EMMC Don’t Connect Power At VDDIeMMC I/F Just Interal LDO Capacitor +24VAMP OPT C5450 10uF 35V DEMODTSVAL ExtTsVAL DEMODTSDATA1 EXT2TsCLK DEMODTSDATA3 EXT2TSSync JAPAN TUNER INTERFACEUSE Two serial TS Port for Japan MTK A2 Ball Name Function DEMODTSCLK ExtTSCLK DEMODTSSYNC ExtTSSync DEMODTSDATA0 ExtTsD0Page Applicable Model Mid-end Platform XXLA74*-Z XXLA71*-Z XXLA69/66*-Z XXLA64/62/61*-Z XXLN57*-Z2013 LED/LCD TV Engineering guide 4. Structure of TV set and connection of sub ass’ys 5. New sub ass’ys CONTENT1. New features 2. Main PCBs 3. Block Diagrams, IIC Map Instruction of new sub ass’ys 6. Adjust way of new features EPIEmbedded Point-Point Interface Features EPI InterfaceMerits Comparison EPI Interface mini-LVDS vs. EPIHF mini-LVDS TCON EPI TCON Protocol FeaturesHF mini-LVDS Topology From TV to Smart phone NFC Near field communicationUser Action Area NFC Tag Chassis LD33B Main PCB for BroadbandWIFI/BT xxLA660S-Zx 1. LGE2122 Block Diagram 2. LGE 2122 I2C Block Diagram IC105 LGE 3.5V 3. Power Block Diagram TDSQ G501D CI Slot 5. Video/Audio In Block Diagram Jack SideSoC Side Tuner 6. Audio Out Block Diagram RENESAS WOLCTL MICOM HDMI1HDMI2 HDMI3 TPS65198 PMICLevel Shift TPS65178 9. PMIC & Level Shift Bloc Diagram USBDM1 USBDP1 /USBOCD1 USBCTL1 Motion Remote Receiver4Pin debugging wafer RENESAS MICOM 47LA660S-ZA InterconnectionPCBs Cables 7 IR to Local Key 3Pin Cable 8 IR to Logo Assy 4Pin Cable 6 IR Assy Introductions of 13Y RF ass’y + Magic Remote control 1. System 2. Remote Buttons 3. MR13 Block Diagram 4. Function List5. Pairing/Un-pairing Method  Motion Data Transmission 1. System Pairing Information Transmission Send to TV after Paired Pairing Information Transmission Sequence repeat 2. Remote Buttons M4 vs. MR13M4 Remote MR13 Remote Bluetooth Receiver 3. MR13 Block DiagramPower Management Bluetooth Remote control RF, Gyro, Accelerometer Power Supply 4. Function listWireless communication Battery Boost up Regulator 5. RF Pairing / Un-pairing Method MethodDescription 1. Wi-Fi built in Ass’y feature 2. Wi-Fi built in Ass’y specification Introductions of 13Y WIFI built in ass’y Wafer WIFI Built in ass’y featurePin map Switch WIFI Built in ass’y Specification 2012. 12 Widevine & HDCP 2.0 & NETFLX1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM Contents 1. Widevine?  HDCP 2. HDCP 2.0 & NETFLIX? Netflix  Why HDCP2.0? 3. DTCP? Changed Item 4. Changed BOMAs-Was Current Contents of LCD TV Standard Repair Process Page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom Content Replace T-con Board or module And Adjust VCOM Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableCheck Power Board 24v output Check Power Board 12v,3.5v etc 3.5V,12V,20V or 24V… Check various voltages of Power Board Check RF Signal level By using Digital signal level meter By using Diagnostics menu on OSDMenu→ Set up→ Support → Signal Test Signal strength Normal over 50% Signal Quality Normal over 50% → Set-Top-Box, Different maker TV etc A. Picture Problem DVB-S/S2 replace Link A10/ A11Check color by input -External Input COMPONENT ※ Check and A10/ A11 External device screen error-Color errorVertical/Horizontal bar, residual image, light spot Replace Main B/D adjust VCOM Check ST-BY Check Power LEDCheck Power On ‘”High” Measure voltage of each output of Power B/D POWEROFFCPUABNORMAL Check Power Off ModeIf Power Off mode is not displayed Check Power B/D voltage POWEROFFABNORMAL1 Check user menu Speaker off Check audio B+ 24V of Power Board Check audio B+ Voltage In case of External Input signal error Check and fix external device Power B/D don’t have problem Check & Repair Cable connection Connector solderCheck IR Output signal Check 3.5v on Power B/D Replace Power B/D or Replace Main B/D External device recognition error D. Function error Identify noise type F. Exterior defect Adjust VCOM G. Network Error  Check SVC Bulletin Check defect CI slot pin Continued from previous page Standard Repair Process Detail Technical Manual ALL MODELSEntry method 24 Pin Power Board ↔ Main Board Check the DC 24V, 12VSMAW200-H24S A. Video errorVideo error, video lag/stop MENU  support  signal test  select channelWhen the signal is strong, use the attenuator -10dB, -15dB, -20dB etc ALL MODELS 1. Checking method for remote controller for adjustmentPress the IN-START with the remote controller for adjustment Version image, light spot A. Video error Vertical/Horizontal bar, residual Checking method 4.Video error Classification of MODULE or Main-B/D A. Video errorColor errorYou can view 6 types of patterns using the ADJ Key MODULE error ADD-BAR,SCAN BAR Solder defect, Short/Crack Appendix Exchange EPI Cable or Main B/DAbnormal Power Section Solder defect, CNT Broken Noise Fuse Open, Abnormal power sectionAbnormal Display GRADATION Appendix Exchange LPBLED driver No LightDim Light Panel Mura, Light leakage Appendix Exchange the ModuleUn-repairable Cases In this case please exchange the module Panel Mura, Light leakage Crosstalk Press damage Un-repairable Cases In this case please exchange the module Front LOGO LED control in the status of ST-BY Condition For ’10 models, there is no voltage out for st-by purpose When st-by, only 3.5V is normally on Checking method when power is ON Check “power on” pin is high Entry method 1. Press the IN-START button of the remote controller for adjustment2. Check the entry into adjustment item B. Power error Off when on, off whiling viewing 3. Change TV Sound Out to TV Speaker C. Audio errorNo audio/Normal video1. Press the MENU button on the remote controller 2. Select the SOUND function of the Menu Checking order when there is no audio ③ ④ ② ① LCD module change T-Con board change

LG Electronics 32LA62**-Z* Standard Repair Process Detail Technical Manual, SMAW200-H24S

Models: 32LA62**-Z*

Checking method when power is ON

Check “power on” pin is high