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LG 32LG40 Training Manual
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LG 32LG40 Training Manual

Fall 2008 lcd training
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See also: Service Manual , Owner's Manual
LG TRAINING MANUAL
LG TRAINING MANUAL
Fall 2008 LCD Training
32LG40
42LG60

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Summary of Contents for LG 32LG40

  • Page 1 LG TRAINING MANUAL LG TRAINING MANUAL Fall 2008 LCD Training 32LG40 42LG60...
  • Page 2 Special components are also used to prevent shock and fire hazard and are required to maintain safe performance. No deviations are allowed without prior approval by LG Electronics. Service work should be performed only after you are thoroughly familiar with these safety checks and servicing guidelines.

  • Page 3: Table Of Contents

    32LG40 :: interconnect ........ 63 New Features ..........9 32LG40 :: waveForms ......... 64 Computer Connection ......... 10 32LG40 :: Main Board :: Main Micro .... 65 Service Menu ..........10 32LG40 :: Main Board :: audio ....66 Power Consumption ........10 32LG40 :: Main Board :: Memory ....

  • Page 5: Overview

    Media Host consists of a USB port on the back of the TV that supports USB flash memory drives loaded with media or firmware for the TV. SimpLink allows for control of other LG SimpLink products via the HDMI connection.

  • Page 6: Model Number Structure

    P = Plasma 50 = Full HD Z= Zenith L = LCD 60 = Scarlet - Full HD & 120Hz Blank = LG D = DLP RPTV 70 = Full HD & 120Hz J = Projector 90 = LED Backlight...

  • Page 7: Features

    OveRvIeW FeATUReS 32LG40 42LG60 Model Name 32LG40 47LG60 Chassis Name LP81A LP81A Screen Specs Resolution 1366 x 768p 1920 x 1080p Brightness (cd/m2) Contrast Ratio (Bare 1,200:1 1,500:1 Module) Dynamic Contrast Ratio 10,000:1 12,000:1 Viewing Angle 178/178 178/178 Colors Reproduction...

  • Page 8: 32Lg40 Dimensions

    OveRvIeW 32LG40 DIMeNSIONS 31.8" 4.3" 808mm 109mm 7.9" 200mm 12" 304.8mm 8.38" 212.74mm 3.9" 3.9" Model No. Not Center 100mm 100mm Serial No. Center Side Label 24.8" 629.92mm 9 11/16" 246.06mm 21.7" 11" 551.2mm 279mm Remove 4 screws to remove stand for wall mount 3.5"...

  • Page 9: Remote Control

    Below are some of the new features on some 2008 LCD TVs. MUTE Intelligent sensor - LG’s “Intelligent Sensor” uses 4,096 sensing steps to evaluate its surroundings. Using a sophisticated algorithm, the LG processes picture quality elements including brightness, contrast, color, sharpness and white balance.

  • Page 10: Computer Connection

    The Adjust and Instart menu can be 37LC7D-UK 190 220W accessed using the service remote (Service 37LG30DC-UA 167 191W 0.36 0.8W remotes are available from LG parts). They can 42LB50C-UA 240W 42LB5DC-UA 240W also be accesed by holding down the menu 42LC4D-UA 230 240W...

  • Page 11: Service Remote

    OveRvIeW SeRvICe ReMOTe NUM KEY FUNCTION POWER To turn the TV on or off POWER ON To turn the TV on automatically if the power is supplied to the TV. Use the POWER key to deactivate; It should be deactivated when delivered. MUTE To activate the mute function.

  • Page 12: Check Firmware Version

    OveRvIeW CHeCk FIRMWARe veRSION LP81A LP81A LPL L42FHD LPL L42FHD You can check the firmware version Main Main V1.62 USB V2.14 V1.62 USB V2.14 by opening the service menu. It is 00 HDCP 0 00 HDCP 0 located near the top of the menu. UPDATe FIRMWARe Tool Option1 Tool Option1...

  • Page 13: Back Cover Removal

    DISASSeMBLy DISASSeMBLy 32LG40 BACk COveR ReMOvAL Remove the 18 screws shown. Pay attention to the size and type of screw as there are many different types. Putting in the improper screw when reassembling may cause damage. The stand does not need to be removed.

  • Page 14: Power Supply Removal

    DISASSeMBLy POWeR SUPPLy ReMOvAL Disconnect P203, P201, and AC In. Now remove the 4 screws indicated. MAIN BOARD ReMOvAL Remove the Right side decorative plastic piece by removing the top and bottom screws. Remove the remaining 6 screws and remove the shield covering the Main board.

  • Page 15: Lcd Driver Removal

    DISASSeMBLy LCD DRIveR ReMOvAL Remove the screws and then the brace. Remove Screws and Remove Brace Remove Screw Remove Screw Remove Screw CN1 LVDS Carefully remove the LVDS cable and then the board. If just removing the shield and not the board, re-install the 3 screws that held the shield on to establish ground.

  • Page 16: Ballast Removal

    DISASSeMBLy BALLAST ReMOvAL Remove the shield and then the ballast. Be sure all heat sinks and insulators are in place when re-assembling. Heat Transfer Material Protects the Outputs Alignment Notch Insulator Shiny Side Down (Conductive) Cut Out Insulator Alignment Notch Fall 2008 LCD Training Fall 2008 LCD Training...

  • Page 17: Dvd Player Removal

    DISASSeMBLy DvD PLAyeR ReMOvAL Remove the tape and then remove the 8 screws holding the DVD Player in place. Remove Remove Tape Tape DvD PLAyeR ReMOvAL Disconnect CN400, CN401, and CN402. Now the DVD Player can be removed. CN402 CN400 CN401 CN401 This screw hidden by tape in previous...

  • Page 18: Exploded View

    122 ABA36844404 Bracket Assembly SPEAKER 32LG40 LA89A SPK BRKT ASSY LEFT, CKD OF 123 ABA36844403 Bracket Assembly SPEAKER 32LG40 LA89A SPK BRKT ASSY RIGHT , CKD O 200 EAJ41825601 LCD,Module-TFT LC320WXN-SAA1 WXGA 32.0INCH 1366X768 500CD - 72% 300 ABJ36840802 Cabinet Assembly...

  • Page 19: Circuit Descriptions - 32Lg40

    CIRCUIT DeSCRIPTIONS CIRCUIT DeSCRIPTIONS 32LG40 POWeR SUPPLy (SMPS) P203 To Ballast P201 To Main Connection F101 3.15A/250V 250V F100 5A/250V AC In = Warning, Hot Ground P203 P201 To Ballast To Main F101 3.15A/250V 250V F100 5A/250V AC In = Warning, Hot Ground...

  • Page 20: Inv On-Off

    CIRCUIT DeSCRIPTIONS POwER SUPPlY CONNECTORS P201 “SMPS” to P800 “Main” Pin Label Stby Run Diode Check Label Stby Run Diode Check 3.2V 1.68V PWM-DIM 3.38V 2.86V 20 INV On/Off 3.29V 3.3V 1.26V 5.05V 4.57V 5.2V 5.15V 5.15V 0.34V 5.2V 5.15V 5.15V 0.34V 5.2V 5.15V 5.15V...
  • Page 21 CIRCUIT DeSCRIPTIONS POwER SUPPlY TEST 24 22 20 18 16 14 12 10 The Power Supply must be producing 23 21 15 13 STAND-BY +5V before performing this test. With the Power Supply disconnected from other boards and AC applied, confirm that the Power Supply is producing 5V from either Pins 9, 10, 1 1 or 12.

  • Page 22: Main (Digital) Board

    CIRCUIT DeSCRIPTIONS MAIN (DIGITAL) BOARD MAIN (TOP) REGUlATOR ChECkS IC201 IC201 USB Power USB Power IC405 IC405 RESET GENERATOR FOR Q400 RESET GENERATOR FOR Q400 FUNCTION FUNCTION NAME NAME STBY STBY FUNCTION FUNCTION NAME NAME STBY STBY 3.3V_MICON 3.3V_MICON 3.41V 3.41V 3.41V 3.41V...

  • Page 23: In +5V_Sub 0.36V 5V

    CIRCUIT DeSCRIPTIONS IC806 IC806 D3.3V/A3.3V_BCM Regulator turns on LD800 D3.3V/A3.3V_BCM Regulator turns on LD800 Q801 Q801 5V SUB SWITCH 5V SUB SWITCH FUNCTION FUNCTION NAME NAME STBY STBY FUNCTION FUNCTION NAME NAME STBY STBY On/Off Control On/Off Control Power_CTL_3.3V Power_CTL_3.3V 3.4V 3.4V ST_5V...

  • Page 24: E Gnd Gnd

    CIRCUIT DeSCRIPTIONS IC401 IC401 BCM RESET BCM RESET IC808 IC808 ST-BY 3.3V DC-DC CONVERTER ST-BY 3.3V DC-DC CONVERTER FUNCTION FUNCTION NAME NAME STBY STBY FUNCTION FUNCTION NAME NAME STBY STBY D3.3V_BCM D3.3V_BCM 3.41V 3.41V ST_5V ST_5V On/Off Control On/Off Control Reset from IC400 Reset from IC400 3.4V...
  • Page 25 CIRCUIT DeSCRIPTIONS TUNER vIDEO AND SIF OUTPUT ChECk For Easy Access, pop the shield off the tuner. If you leave the shield on you can still access the same pins. Be careful not to accidentally ground out you test lead on the shield. Pin 16 Composite Video Pin 14 Audio SIF Pin 3 Tuner B+ (5V)
  • Page 26 CIRCUIT DeSCRIPTIONS MAIN lvDS ChECk To confirm that the Main board is outputting Picture Content signals, check P902 (LVDS) for output. Check pins 1 1-20. This signals vary, but looking for signals like the ones shown below on any of these pins will confirm the output of video content. This signal is using a standard SMTE Color Bar output from a generator as the input source.

  • Page 27: Gnd Gnd Gnd Gnd

    CIRCUIT DeSCRIPTIONS MAIN vOlTAGES P800 “Main” to P201 “SMPS” P401 “MAIN” to “Front Keys” Label Stby Diode Check Label Stby Run Diode Check 1, 2 KEY3 3.4V 3.4V 1.4V 3, 4 KEY4 3.4V 3.4V 1.4V 5, 6 11.8V 3.03V 7, 8 9, 10 ST-5V 5.15V...
  • Page 28 CIRCUIT DeSCRIPTIONS MAIN vOlTAGES For locations, refer to the Main board’s bottom view. The panel control is on pin 33 of IC407. Q900 turns on Q901, the LVDS Switch generats LVDS 12V. All voltages are shown on the Interconnect diagram in the schematics section. LVDS Signal Waveforms are shown on the back of Interconnect diagram.
  • Page 29 CIRCUIT DeSCRIPTIONS P900 “Main” to P402 “DVD Player” Label Stby Diode Check 3.4V No Disc Disk-Enable 3.4V 1.68V 0V Disc In DVDP-RXD 0.7V 3.08V DVDP-TXD 0.7V 3.4V P901 “Main” to CN400 “DVD Player” Label Stby Diode Check 12.3V DVDP 3.3V 3.4V 3.37V .099V...

  • Page 30: Ballast Assembly

    CIRCUIT DeSCRIPTIONS BALLAST ASSeMBLy Ballast Start Det LED LED1 MCN1 8A/125V Transformers To Backlight Left Side To Backlight Right Side Ballast Start Det LED LED1 MCN1 8A/125V Transformers To Backlight To Backlight Right Side Left Side Fall 2008 LCD Training Fall 2008 LCD Training...
  • Page 31 CIRCUIT DeSCRIPTIONS BAllAST TRANSFORMER wAvEFORMS Warning: secondary is over 1.2Kv. MCN1 “Ballast” to P203 “SMPS” Pin Label Stby Run Diode 0V 24.52V 0V 24.52V 0V 24.52V 0V 24.52V 0V 24.52V 34V p/p 64.89kHz 22.2V p/p 220kHz T1/T2 Pin 1 T1/T2 Pin 6 Gnd_1 Gnd 11 BVR_A 1.67V...

  • Page 32: Lcd Driver (T-Con)

    CIRCUIT DeSCRIPTIONS LCD DRIveR (T-CON) If you test the TV with the shield off of the LCD Driver, reinstall the screws for grounding purposes. Use the Connector P902 on the Main board for Voltages and Signal readings. To TFT Panel To TFT Panel 6.3V/1.5A 3) 0.0V...
  • Page 33 CIRCUIT DeSCRIPTIONS lCD DRIvER vOlTAGES Use P902 on the Main board for making voltage, resistance, and waveform checks. CN1 “LCD Drvier” to P902 “Main” Label Stby Run Diode Check Label Stby Run Diode Check 1 LVDS 12V 0V 12.3V 2 LVDS 12V 0V 12.3V 3 LVDS 12V 0V 12.3V 4 LVDS 12V 0V 12.3V LVDS...

  • Page 34: Dvd Player

    CIRCUIT DeSCRIPTIONS DvD PLAyeR DvD PlAYER vOlTAGES Resistance should be taken in diode mode with the connectors removed. *Pin 2: 3.4V with DVD Player and 0V with no DVD Player. CN401 Connector “DVD” to P904 “Main” Label Stby Run Diode Check Label Stby Run Diode Check...

  • Page 35: Front Board

    CIRCUIT DeSCRIPTIONS FRONT BOARD FRONT vIEw 5V Zener 4.1V Zener To Main PWB To Side Keys PWB 3.4V Zener REAR vIEw POWER IR Receiver POWER BUTTON Fall 2008 LCD Training Fall 2008 LCD Training...
  • Page 36 CIRCUIT DeSCRIPTIONS FRONT BOARD vOlTAGES Resistance should be taken in diode mode with the connectors removed. J1 “Front board” to P401 “Main” J2 “Front board” to P101 “Side Key” Label Stby Diode Check Pin Label Stby Diode Check KEY3 3.4V 3.4V Key 1 3.4V...

  • Page 37: Invisible Speaker System

    CIRCUIT DeSCRIPTIONS INvISIBLe SPeAkeR SySTeM Woofers Tweeters Tweeters Bottom View of Woofer Ports Stand Removed Fall 2008 LCD Training Fall 2008 LCD Training...

  • Page 39: Disassembly - 42Lg60

    DISASSeMBLy DISASSeMBLy 42LG60 INTRODUCTION This section of the manual will discuss Disassembly of the 42LG60 LCD Direct View Television. Upon completion of this section the Technician will have a better understanding of the disassembly procedures. BACk COveR ReMOvAL Remove the 13 screws shown. Pay attention to the size and type of screw as there are different types.

  • Page 40: Power Supply (Smps) Removal

    DISASSeMBLy POWeR SUPPLy (SMPS) ReMOvAL Disconnect P2, AC In, P402, and P402. Remove the 6 screws indicated below. MAIN BOARD ReMOvAL Disconnect P401, P501, P800, P801, and P900. Note: In the bottom right is connector P200. This is an open connection. Remove the 2 screws securing the Side input decorative plastic piece on the right.

  • Page 41: Control Board Removal

    DISASSeMBLy CONTROL BOARD ReMOvAL Disconnect P101, P102 P103, and P104. Remove the LVDS cables by pressing in from the sides to release and then lift them out. Be careful when removing the LVDS Cables, they’re fragile. Press the release tabs to avoid damage to board or to the cable itself. Remove the 4 screws indicated below.

  • Page 42: Speaker Box Removal

    DISASSeMBLy SPeAkeR BOx ReMOvAL To remove the Speaker Box, remove the 4 screws show in circles. Then remove the wire harness. Carefully disconnect both Tweeters. Unplug P500 from the Main board. Speaker Box Removed Tweeters Fall 2008 LCD Training Fall 2008 LCD Training...

  • Page 43: Exploded View

    DISASSeMBLy exPLODeD vIeW Part numbers subject to change. Check GCSC (aic.lgservice.com) for the current part numbers. Loc Part No Description Specification 120 EAB41280401 Speaker,Full Range G1640401 FERRITE 10W 8OHM 82DB 110HZ 193.5X42X30 121 EAB41284401 Speaker,Tweeter D025D12K1400(0/90) 33uF/50V 20W 4OHM 68DB 590HZ 122 ABA35890405 Bracket Assembly BRACKET 42LG30/50/70 - SPEAKER WOOFER BRACKET AS...

  • Page 45: Circuit Descriptions - 42Lg60

    CIRCUIT DeSCRIPTIONS CIRCUIT DeSCRIPTIONS 42LG60 INTRODUCTION LCD Driver (T-CON) With shield removed Backlight Backlight LVDS Connection Connection Cables Control Board Power Supply Main Board Component HDMI 1/2/3 Y/Pr/Pb PGB (PC) Audio PGB (PC) Tuner RS-232 Digital Audio Remote In Opitcal Audio Fall 2008 LCD Training Fall 2008 LCD Training...

  • Page 46: Backlight Layout

    CIRCUIT DeSCRIPTIONS BACkLIGHT LAyOUT Back View 18 Bulbs To Backlights Over 1.2KV Power Supply with Ballast 58Khz Fall 2008 LCD Training Fall 2008 LCD Training...

  • Page 47: Power Supply Layout

    CIRCUIT DeSCRIPTIONS POWeR SUPPLy LAyOUT P2 - To Main P402 To Backlight P401 To Backlight F700 F101 5A/250V AC IN 335V 8A/250V INPUT AC 100V ~ 240V (50/60Hz) 3A St-by 5.2V (5A) 12V (2A) OUTPUT 16.5V (1.3A) P401-P402 950V / 135mA MODEL PLHL-T715A POwER SUPPlY vOlTAGES...

  • Page 48: Pwr

    CIRCUIT DeSCRIPTIONS POwER SUPPlY TEST 24 22 20 18 16 14 12 10 To test everything but the backlights. 23 21 15 13 Disconnect the P2 connector from the Main board. With the Power Supply disconnected from other boards and AC applied, confirm that the Power Supply is producing 5V from either pins 9, 10, 1 1 or 12.

  • Page 49: Control Board Layout

    CIRCUIT DeSCRIPTIONS CONTROL BOARD LAyOUT P103 P104 To LCD Driver (T-CON) P101 LVDS P102 To Main Control Board Regulators Fall 2008 LCD Training Fall 2008 LCD Training...
  • Page 50 CIRCUIT DeSCRIPTIONS lvDS CABlE Locking Tabs LVDS stands for Low Voltage Differential Signals. The LVDS cable carries video signals from the Main board to the Control board Their signals can be Press In Press In confirmed with the Oscilloscope by monitoring the LVDS signals with no input signal selected while pressing the Menu button on and off with the remote control or keypad.

  • Page 51: Lcd Driver (T-Con) Layout

    CIRCUIT DeSCRIPTIONS LCD DRIveR (T-CON) LAyOUT To LCD Panel To Control Board Fall 2008 LCD Training Fall 2008 LCD Training...
  • Page 52 CIRCUIT DeSCRIPTIONS lCD DRIvER (T-CON) TESTS Check the regulator US1 for correct voltage. 1.8V 3.2V Use LD1 to determine if The boot up sequence of The T-CON is OK. If all is OK, this LED will turn bright blue shortly after power is Check Fuse F1 for 12V.

  • Page 53: Main Board Layout

    CIRCUIT DeSCRIPTIONS MAIN BOARD LAyOUT If odd video problems are found, use some freeze spray on IC100 and its circuits. If the video returns to normal, the board needs to be replaced. To Control Board P800 P900 P801 Power Supply IC100 P200 P401...
  • Page 54 CIRCUIT DeSCRIPTIONS MAIN BOARD UNDERSIDE IC805 3.3V BCM IC400 BCM Reset 0.4V 3.37V IC100 0.4V 3.39V 0.4V 3.39V Video Processor 0.1V 1.2V IC101 IC810 IC802 IC405 3.29V 3.31V 1.8V 0.3V 3.3V 0.3V 3.31V 0.6V 0.6V MAIN BOARD CRYSTAl ChECk Micro Crystal Video Crystal 780 mVp/p 2.4 Vp/p...
  • Page 55 CIRCUIT DeSCRIPTIONS MAIN BOARD lD803 ChECk Use LD803 as a visual aid. This lets you know if the +5V is being converted to 3.3V for the BCM chip IC100. If LD803 is illuminated, +3.3V is ok. Only half of the dual LED is used.
  • Page 56 CIRCUIT DeSCRIPTIONS Test the waveforms while using a SMTE color bar signal as the input. TDVF-H051F EBL37676801 NC_1 Not Used RF-AGC Not Used Pin 14 +B (5V) SIF Signal Not Used NC_2 Not Used 850mVp/p 20nSec rate Not Used DIGITAL_IF1 DIGITAL_IF2 IC_AGC Pin 16...

  • Page 57: Ol Ol

    CIRCUIT DeSCRIPTIONS MAIN BOARD CONNECTORS P501 “Main” to “Speakers” Pin Stby Run Check 2.58V 2.58V 2.58V P900 “Main” to P104 “Control” Stby Diode Stby Diode witched 11.7V 11.7V LVdS 12V 11.7V 11.7V 0.47V 3.3V 3.3V 1.14V 1.14V 1.11V 1.11V ideo 1.12V 1.05V ignaL...

  • Page 58: Gnd Ol Ol

    CIRCUIT DeSCRIPTIONS P801 “Main” to P2 “SMPS” Odd Label Stby Run Diode Check Even Label Stby Diode Check 0.94V 0.94V 11.8V 1.32V 11.8V 1.32V 5.15V 1.49V 5.15V 5.15V 1.49V 5.15V 1.49V 5.15V 5.15V 1.49V ERR 3.19V 3.3V 4.57V 1.85V 2.86V 3.29V 21* ADIM 0.1V 1.68V PDIM...

  • Page 59: Front Pwb

    CIRCUIT DeSCRIPTIONS FRONT lED & POwER TOUCh Front PWB Assembly To Main FRONT CONTROl ASSEMBlY The Intelligent Sensor and IR Sensor are located on the front of this board. Right Tweeter To Front Touch LED PWB Light Diffuser for the Light Diffuser for the Intelligent Sensor Intelligent Sensor...

  • Page 60: Stby Run

    CIRCUIT DeSCRIPTIONS SIDE CONTROl PANEl P100 To Front Control PWB CONTROl PANEl vOlTAGES J2 “Ft Control” to J1 “LED” J1 “Front Keys” to “Main” P401 Stby Stby 3.3V 3.3V 3.25V 3.25V 3.3V 3.3V 3.25V 3.25V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V...

  • Page 61: Invisible Speaker System Layout

    CIRCUIT DeSCRIPTIONS INvISIBLe SPeAkeR SySTeM LAyOUT Right Left Tweeter Tweeter Right Left Speaker Box Speaker Box Speaker Box Removed Tweeters Fall 2008 LCD Training Fall 2008 LCD Training...
  • Page 64 Fall 2008 LCD Training...

  • Page 65: Schematics

    Schematics 32LG40 :: Interconnect 32LG40 INTERCONNECT DIAGRAM P201 Odd "SMPS" to P800 "Main PWB" P201 Even "SMPS" to P800 "Main PWB" Label STBY Diode Check Label STBY Diode Check 16.5V 0.31V 16.5V 0.31V TO TFT MODULE P203 "SMPS" to P209 "Ballast PWB"...

  • Page 66: 32Lg40 :: Waveforms

    32LG40 :: WaveForms 32LG40 LVDS P902 WAVEFORMS 32LG40 LVDS CABLE WAVEFORMS: Waveforms taken using SMTP Color Bar input. All readings give the Scale and Time Base related to scope settings. Top waveform in each image gives a slower rate. 10mV at 5uS per division.

  • Page 67: 32Lg40 :: Main Board :: Main Micro

    32LG40 :: maIn Board :: maIn mIcro symbol refers to safety components. Only replace with LG parts. PDP Training - Fall 2008 Schematics...

  • Page 68: 32Lg40 :: Main Board :: Audio

    32LG40 :: maIn Board :: audIo symbol refers to safety components. Only replace with LG parts. PDP Training - Fall 2008 Schematics...

  • Page 69: 32Lg40 :: Main Board :: Memory

    32LG40 :: maIn Board :: memory symbol refers to safety components. Only replace with LG parts. PDP Training - Fall 2008 Schematics...

  • Page 70: 32Lg40 :: Main Board :: Bcm/Usb

    32LG40 :: maIn Board :: Bcm/usB symbol refers to safety components. Only replace with LG parts. Side USB PDP Training - Fall 2008 Schematics...

  • Page 71: 32Lg40 :: Main Board :: Dcm

    32LG40 :: maIn Board :: dcm symbol refers to safety components. Only replace with LG parts. PDP Training - Fall 2008 Schematics...

  • Page 72: 32Lg40 :: Main Board :: Lvds/Dvd

    32LG40 :: maIn Board :: Lvds/dvd symbol refers to safety components. Only replace with LG parts. PDP Training - Fall 2008 Schematics...

  • Page 73: 32Lg40 :: Main Board :: Tuner Power

    32LG40 :: maIn Board :: tuner PoWer symbol refers to safety components. Only replace with LG parts. PDP Training - Fall 2008 Schematics...

  • Page 74: 32Lg40 :: Main Board :: Jackpacks

    32LG40 :: maIn Board :: JackPacks PDP Training - Fall 2008 Schematics...

  • Page 75: 32Lg40 :: Main Board :: Hdmi

    32LG40 :: maIn Board :: HdmI HDMI 1 HDMI 2 PDP Training - Fall 2008 Schematics...

  • Page 76: 42Lg60 :: Interconnect

    42LG60 :: Interconnect TFT PANEL LD1 Blue LED TFT Drive PWB Check SET 0FF BOOT OK SET ON LED OFF LED ON LED OFF 1.8V Anode Anode 11.6V Anode 11.6V FRONT SIDE OF MAIN PWB 3.2V BACK SIDE OF MAIN PWB Cathode Cathode Cathode...

  • Page 77: 42Lg60 :: Waveforms

    42LG60 :: WaveForms LVDS CABLE P900 FROM MAIN PWB TO CONTROL PWB P101 USING SMTP COLOR BAR INPUT LAST TWO WAVEFORMS ARE FROM THE TUNER Measurements +/- 5% PDP Training - Fall 2008 Schematics...

  • Page 78: 42Lg60 :: Main Board :: Bcm

    42LG60 :: maIn Board :: Bcm PDP Training - Fall 2008 Schematics...

  • Page 79: 42Lg60 :: Main Board :: Ddr Memory

    42LG60 :: maIn Board :: ddr memory PDP Training - Fall 2008 Schematics...

  • Page 80: 42Lg60 :: Main Board :: Main Micro

    42LG60 :: maIn Board :: maIn mIcroProcessor PDP Training - Fall 2008 Schematics...

  • Page 81: 42Lg60 :: Main Board :: Audio Processor

    42LG60 :: maIn Board :: audIo Processor PDP Training - Fall 2008 Schematics...

  • Page 82: 42Lg60 :: Main Board :: Hdmi

    42LG60 :: maIn Board :: HdmI PDP Training - Fall 2008 Schematics...

  • Page 83: 42Lg60 :: Main Board :: Interface

    42LG60 :: maIn Board :: InterFace PDP Training - Fall 2008 Schematics...
  • Page 84 42LG60 :: maIn Board :: InterFace PDP Training - Fall 2008 Schematics...

  • Page 85: 42Lg60 :: Main Board :: Regulators

    42LG60 :: maIn Board :: reGuLators PDP Training - Fall 2008 Schematics...

  • Page 86: 42Lg60 :: Main Board :: Lvds/Tuner

    42LG60 :: maIn Board :: Lvds/tuner PDP Training - Fall 2008 Schematics...

  • Page 87: 42Lg60 :: Main Board :: Audio Out

    42LG60 :: maIn Board :: audIo out PDP Training - Fall 2008 Schematics...

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