LG LM805L-WL Service Manual Download Page 1

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COLOR MONITOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS NO. : CL-36
FACTORY MODEL: LM805L

MODEL: L1810T

(LM805L-WL)

L1810A

(LM805L-WL)

Summary of Contents for LM805L-WL

Page 1: ...COLOR MONITOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO CL 36 FACTORY MODEL LM805L MODEL L1810T LM805L WL L1810A LM805L WL ...

Page 2: ...AC 100 240V 50 60Hz 1 5A Output DC 12V 5A 4 2 Power Consumption 5 ENVIRONMENT 6 1 Operating Temperature 10 C 35 C 50 F 95 F Ambient 6 2 Relative Humidity 10 80 Non condensing 6 3 MTBF 30 000 Hours Typ 6 DIMENSIONS with TILT SWIVEL Width 406 mm 15 98 Depth 223 mm 8 78 Height 431 mm 16 97 7 WEIGHT with TILT SWIVEL Net Weight 8 0kg 17 64 lbs Gross Weight 10 5kg 23 15 lbs 8 USB USB standard Rev 1 0com...

Page 3: ...T M D S Data1 T M D S Data1 T M D S Data1 3 Shield T M D S Data3 T M D S Data3 5V Power Ground return for 5V H Sync and V Sync Pin Signal DVI D 1 8 9 17 24 16 16 17 18 19 20 21 22 23 24 Hot Plug Detect T M D S Data0 T M D S Data0 T M D S Data0 5 Shield T M D S Data5 T M D S Data5 T M D S Clock Shield T M D S Clock T M D S Clock T M D S Transition Minimized Differential Signaling DVI D Connector Di...

Page 4: ... such as pencil or pen as this may result in damage to the panel Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short c...

Page 5: ...768 3 6 29 H 60 123 1312 1024 16 96 176 V 75 029 800 768 1 3 28 H 68 677 1376 1024 48 96 208 V 84 997 808 768 1 3 36 H 68 681 1456 1152 32 128 144 V 75 062 915 870 3 3 39 H 61 805 1504 1125 18 134 200 V 65 96 937 900 2 4 31 H 63 981 1688 1280 48 112 248 V 60 02 1066 1024 1 3 38 H 79 976 1688 1280 16 144 248 V 75 035 1066 1024 1 3 38 Mode H V Sort 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 25 175 28 32...

Page 6: ...hen the display operates normally If the display is in DPM Energy Saving mode this indicator color changes to amber 2 Menu Button Use this button to enter or exit the On Screen Display 3 Button Use these buttons to choose or adjust items in the On Screen Display Volume Use these buttons to decrease or increase the volume level 37 100 100 Bring up Contrast and Brightness adjustment Use these button...

Page 7: ...ws the image from the TV HDTV VCR or DVD to be displayed on a sub screen while you are using a computer The sub screen is changed in the order shown below SMALL LARGE OFF INPUT MENU AUTO SELECT PIP INPUT SELECT DVI DIGITAL V1 AV V2 S DSUB ANALOG INPUT SELECT DVI DIGITAL V1 AV V2 S DSUB ANALOG TV AUTO SELECT INPUT Use this button to select an input signal DVI DIGITAL DVI digital signal DSUB ANALOG ...

Page 8: ...r view Thisrearviewrepresentsageneralmodel yourdisplaymaydifferfromtheviewasshown LINE OUT A terminal used to connect to the speaker including a built in amplifier Amp Make sure that the connecting terminal of the PC sound card is checked before connecting If the Audio Out of PC sound card has only Speaker Out reduce the PC volume If the Audio Out of the PC sound card supports both Speaker Out and...

Page 9: ...e attached it USB connection 1 Connect the upstream port of the Display to the downstream port of the USB compliant PC or another hub using the USB cable Computer must have a USB port 2 Connect the USB compliant peripherals to the downstream ports of the monitor NOTE To activate the USB hub function the monitor must be connected to a USB compliant PC OS or another hub with the USB cable enclosed W...

Page 10: ...N6 CN7 CN8 CN9 CN_C01 CN301 CN_C02 J8 J4 J1 J10 J1 J710 J904 J901 USB Ass y CONTROL AUDIO MAIN Connector Ass y P N 6631T11012P Connector Ass y P N 6631T20020C Connector Ass y P N 6631T20015R Connector Ass y P N 6631T20020B ...

Page 11: ...21 LVDS Transmitter 63LVD823 TMDS Receiver Sil161B DVI D ADC AD9883KS 140 De interlace IC Video Decoder SAA7114H D SUB Male To TV Tuner Video Signal Processor PW166B 20T D SUB Sync Separator BA7657 Panel Link 30P 4 P DC JACK 12V 5A 235 mm Inverter 150 mm Car Tuner Main Assy Tuner Assy SVHS Comp Video Audio Right Audio Left AV PC Audio Headphone POWER Menu Set LED Source 15pin control PIP CONTROL ...

Page 12: ...c_Sel 3 3V 3 3V 3 3V NCTL_SCL NCTL_SDA GREF GREF 3 3V 5V 8V 12V 3 3V 3 3V 2 5V 3 3V 3 3V 12V Control Board Buffer 74LVC541ct RDN CS0N Data PWD 07 Key_Data 0 7 CS0N RDN CS1N Data PWD 0 7 PWA 0 19 ROMOE ROMWE ROMWE ROMOE I O 74LV C273D PCB_PWR INV_PWR LCM_PWR AMP_PWR Control Signals TMDSTX_PDNN TMDSRX_PDNN R G B Even R G B Odd RGB Digital Signal Even Input Selection Format Converter Circuit Analog S...

Page 13: ...B 20T controls this IC through IIC Line This IC analyzes input signal of CVBS Y C and output analyzed signal 8bit interlace signal to De interlace block Analyzed signal has video control signals like Contrast Brightness Sharpness Color tint signals Including Adaptive Comb Filter 6 Audio Decoder This block is composed of MSP3420G U49 and peripheral devices PW166B 20T controls this IC through IIC Li...

Page 14: ...odule The signal format is Panel link LCD Module has Panel link receiver that is same output of PW166B 20T This is the best for reduction EMI problem and the number of pin connector 11 DC DC Converter block DC DC Converters convert the input 12V to proper 2 5V 3 3V 5V 8V for main board For shooting heat trouble we use the DC DC converting IC ...

Page 15: ...t Mode 2 Adjustment for White Balance 1 Set External Bright to MAX position and Contrast to MAX position 2 Display Color 0 0 pattern at Mode 15 3 Press Menu key Vp key Right key of Remote controller or Menu Buttons in sequence 4 Select WHITE BALANCE ADJUST and Press SET key 5 After INPUT WHITE PATTERN message Display Color 15 0 pattern at Mode 15 6 No attempt to manually adjust BIAS and Drive data...

Page 16: ...V KEY CHECK 74LVC541 U25 CONN J19 CHECK OTHER CIRCUIT CHECK PW166 U8 INPUT POWER CHECK BA033T U37 3 3V LM317 U10 2 5STB INVERTER INPUT POWER CHECK L29 L30 12VS L22 5VS MODULE INPUT POWER CHECK IRF7314 U35 LCD VDD INVERTER CHECK MODULE CHECK M29W800DT U19 INPUT POWER CHECK BA033T U37 3 3V ...

Page 17: ...AL IC OF LVDS U23 CHECK I O SYNC OF 74LVC257 U5 CHECK AD9883 U4 I O SIGNAL CHECK PW166 U8 I O SIGNAL CHECK LVDS U23 I O SIGNAL POWER CHECK OF 74LVC257 U5 U37 3 3V POWER CHECK OF AD9883 U2 DVDD AVD L11 V33 ADC POWER CHECK OF PW166 U8 BA033T U37 3 3V LM317 U10 2 5STB POWER CHECK OF LVDS U23 L14 LVDCVCC L15 PLLVCC NO INPUT SIGNAL NO OUTPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO OUTPUT SIGNAL NO I...

Page 18: ... SYNC OF 74LVC257 U5 CHECK SIL161 U201 I O SIGNAL CHECK PW166 U8 I O SIGNAL CHECK LVDS U23 I O SIGNAL POWER CHECK OF 74LVC257 U5 U37 3 3V POWER CHECK OF AD9883 U2 DVDD AVD L11 V33 ADC POWER CHECK OF PW166 U8 BA033T U37 3 3V LM317 U10 2 5STB POWER CHECK OF LVDS U23 L14 LVDCVCC L15 PLLVCC POWER CHECK OF SIL161 U201 L4 AVCC L5 PVCC L9 DVCC L210 OVCC NO INPUT SIGNAL NO OUTPUT SIGNAL NO OUTPUT SIGNAL N...

Page 19: ...PHERAL IC OF PW166 U8 CHECK SAA7114 U7 I O SIGNAL CHECK SDA9400 U16 I O SIGNAL CHECK PW166 U8 I O SIGNAL CHECK LVDS U23 I O SIGNAL POWER CHECK OF SAA7114 U7 L19 L21 3 3V POWER CHECK OF SDA9400 U16 L23 3 3V POWER CHECK OF PW166 U8 BA033T U37 3 3V LM317 U10 2 5STB POWER CHECK OF LVDS U23 L14 LVDCVCC L15 PLLVCC NO INPUT SIGNAL NO INPUT SIGNAL NO OUTPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO INPUT...

Page 20: ...3 CHECK THE PERIPHERAL IC OF PW166 U8 CHECK TV CH CHECK SAA7114 U7 I O SIGNAL CHECK SDA9400 U16 I O SIGNAL CHECK PW166 U8 I O SIGNAL CHECK LVDS U23 I O SIGNAL POWER CHECK OF SAA7114 U7 L19 L21 3 3V POWER CHECK OF SDA9400 U16 L23 3 3V POWER CHECK OF PW166 U8 BA033T U37 3 3V LM317 U10 2 5STB POWER CHECK OF LVDS U23 L14 LVDCVCC L15 PLLVCC NO INPUT SIGNAL NO OUTPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIG...

Page 21: ...WHITE OF J702 CHECK THE PERIPHERAL IC CHECK THE PERIPHERAL IC OF TDA7268 U39 CHECK CONNECTION OF SPEAKER ON MONITOR CHECK MSP3420G U49 I O SIGNAL CHECK TDA7268 U39 I O SIGNAL CONN CHECK POWER CHECK OF MSP3420G U49 L34 L35 L36 5V POWER CHECK OF TDA7268 U39 12V POWER CHECK OF PW166 U8 BA033T U37 3 3V LM317 U10 2 5STB NO OUTPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO INPUT SIGNAL NO INPUT SIGNAL ...

Page 22: ...C75 C70 R26 R151 RA2 60 RA24 20 R96 R86 R32 U9 Q19 R187 R177 D30 D29 R14 R10 R13 R9 U19 R35 R138 R33 R25 R27 5 10 L3 C12 R206 R173 C11 D28 J3 R207 C99 SOLDERING DIRECTION C112 J2 L15 U6 C38 R47 R40 R45 L27 R46 R37 Y W C76 C74 R99 V U T R P N X2 G H J K L M U8 A B C D E F R91 R126 1 R219 R208 R155 R137 R204 R202 R197 RA5 R198 RA4 RA7 C67 C235 RA6 C10 C9 R169 L31 J17 C106 10 20 R41 U23 1 100 RA38 RA...

Page 23: ...0 TP299 T P298 T P296 TP297 C113 C151 R200 C166 C165 C160 C102 C104 C108 C157 C139 R199 C135 R89 R88 C164 C170 C162 C105 C226 C222 C107 L52 C163 C161 C168 C169 C167 C133 C134 C29 C27 C28 C224 L49 C206 C174 C219 C214 C209 C56 C213 C208 C242 C180 C181 C211 C212 C210 C200 C201 1 1 ...

Page 24: ...R8 D1 10 15 R21 R22 R24 R19 ZD8 L15 C25 C18 L18 U3 ZD11 A L13 ZD12 ZD5 R23 C24 ZD7 L14 MODEL LM805L USB P N 6870T508U12 DATE 2002 09 26 ZD3 J4 A L19 L20 R28 R30 R31 R32 C38 C39 J2 C23 4 EARPHONE BOARD J904 J901 C926 C925 R903 R904 L906 L905 MODEL LM805L EARPHONE P N 6870T512F10 DATE 2002 06 25 J902 5 CONTROL BOARD Component Side 6 CONTROL BOARD Solder Side ...

Page 25: ... 25 EXPLODED VIEW 6 1 5 2 7 8 4 c 10 15 16 17 18 20 21 22 23 19 11 12 14 a 3 a b 13 9 PR VOL Q VIEW LIST APC PIP IN PC VOL TV AV PC MENU POWER MUTE PR OK ...

Page 26: ...USB LM805L USB INTERFACE TOTAL BRAND CL 36 MAIN TOTAL ASSEMBLY LM805L BRAND CL 36 FLATRON L1810T MAIN TOTAL ASSEMBLY LM805L ALRDW BRAND CL 36 FLATRON L1810A METAL ASSEMBLY REAR SHIELD LM805 AV PWB PCB ASSEMBLY SUB LM805L CONTROL TOTAL BRAND CL 36 PWB PCB ASSEMBLY SUB LM805L SOUND TOTAL BRAND CL 36 SPEAKER ASSEMBLY LM805L T401S01K1450 8 OHM 1W METAL FIX SPEAKER LM568E CORD A V RCA CABLE UL 2863 25 ...

Page 27: ...PTION SPECIFICATION C55 0CK104CK56A 0 1UF 1608 50V 10 R TP X7 C56 0CH3104K946 100000PF 50V Z F 2012 R TP C57 0CK104CK56A 0 1UF 1608 50V 10 R TP X7 C58 0CK473CK56A 47000PF 1608 50V 10 R TP C59 0CK473CK56A 47000PF 1608 50V 10 R TP C60 0CK104CK56A 0 1UF 1608 50V 10 R TP X7 C61 0CK104CK56A 0 1UF 1608 50V 10 R TP X7 C62 0CK104CK56A 0 1UF 1608 50V 10 R TP X7 C63 0CK104CK56A 0 1UF 1608 50V 10 R TP X7 C64...

Page 28: ... 16V M FM5 TP 5 C178 0CH8226F611 22UF 16V M 85STD CYL R TP C179 0CE477EF638 470UF KMG 16V M FM5 TP 5 DATE 2002 12 13 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C180 0CH3104K946 100000PF 50V Z F 2012 R TP C181 0CH3104K946 100000PF 50V Z F 2012 R TP C182 0CC101CK41A 100PF 1608 50V 5 R TP NP0 C183 0CC102CK41A 1000PF 1608 50V 5 R TP NP C184 0CC102CK41A 1000PF 1608 50V 5 R TP NP C195 0CE477CF618 470...

Page 29: ...9AA KDS226 TP KEC SOT 23 80V D22 0DS226009AA KDS226 TP KEC SOT 23 80V DATE 2002 12 13 S AL LOC NO PART NO DESCRIPTION SPECIFICATION D23 0DS226009AA KDS226 TP KEC SOT 23 80V D24 0DS226009AA KDS226 TP KEC SOT 23 80V D25 0DS226009AA KDS226 TP KEC SOT 23 80V D26 0DS226009AA KDS226 TP KEC SOT 23 80V D27 0DS226009AA KDS226 TP KEC SOT 23 80V D28 0DS226009AA KDS226 TP KEC SOT 23 80V D29 0DS226009AA KDS226...

Page 30: ...1T2012 301JT CERATEC 20 L47 6210TCE001H HB 1T2012 301JT CERATEC 20 L48 6210TCE001H HB 1T2012 301JT CERATEC 20 L49 0RH0000D622 0 1 10W P TYPE TAPPING L50 6210TCE001G HH 1M3216 501 CERATEC 3216 DATE 2002 12 13 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L51 6210TCE001G HH 1M3216 501 CERATEC 3216 L52 0RH0000D622 0 1 10W P TYPE TAPPING L62 6210TCE001H HB 1T2012 301JT CERATEC 20 L64 6210TCE001H HB 1T...

Page 31: ...7 33 OHM 1 10 W 5 1608 R TP R105 0RJ1002D677 10K OHM 1 10 W 5 1608 R T DATE 2002 12 13 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R106 0RJ2200D677 220 OHM 1 10 W 5 1608 R T R107 0RJ2200D677 220 OHM 1 10 W 5 1608 R T R108 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R110 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R111 0RJ1002D677 10K OHM 1 10 W 5 1608 R T R112 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R113 0RJ3301...

Page 32: ... R246 0RJ4703D677 470K OHM 1 10 W 5 1608 R R247 0RJ4703D677 470K OHM 1 10 W 5 1608 R DATE 2002 12 13 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R248 0RJ4703D677 470K OHM 1 10 W 5 1608 R R250 0RJ1000D677 100 OHM 1 10 W 5 1608 R T R251 0RJ1000D677 100 OHM 1 10 W 5 1608 R T R252 0RJ1001D677 1K OHM 1 10 W 5 1608 R TP R253 0RJ1001D677 1K OHM 1 10 W 5 1608 R TP R254 0RJ4701D677 4 7K OHM 1 10 W 5 1608...

Page 33: ...OHM 1 10 W 5 1608 R TP R24 0RJ2001D677 2K OHM 1 10 W 5 1608 R TP DATE 2002 12 13 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R25 0RJ2001D677 2K OHM 1 10 W 5 1608 R TP R26 0RJ2001D677 2K OHM 1 10 W 5 1608 R TP ZD1 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 ZD2 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 ZD4 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 ZD5 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 LED1 0DLLT0089AA ...

Page 34: ...OHM 1 10 W 5 1608 R T U1 0ITI764330A TPS76433DBVR SOT23 DBV TP U2 0IPRPTI007A TUSB2036 TEXAS INSTRUMENT U3 0ITI204200B TPS2042ADR TEXAS INSTRUMEN X1 6202TST001C SX 1 SUNNY SMD 6 0MHZ 5 ZD1 0DZ510009EE UDZ S 5 1B TP ROHM K SOD32 ZD2 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 ZD3 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 ZD4 0DZ510009EE UDZ S 5 1B TP ROHM K SOD32 ZD5 0DZ560009DA UDZ S 5 6B TP ROHM K SOD32 ...

Page 35: ...ed 1 input HD Sync Signal detector Green 1 input Ground Blue 1 input Ground Red 2 input Ground Green 2 input Ground Blue 2 input VD 1 input HD 1 input HD 2 input HD output Red output Vcc Green output Composite video input Sync on Green Composite sync output CTL H IN L IN2 Blue output VD output VD 2 input 1 24 BLOCK DIAGRAM ...

Page 36: ...round pin SDA I O Bi directional data pin for the I2 C bus serial data interface Schmitt trigger input and open drain output An external pull up resistor must be connected to VCC Typical values for this pull up resistor are 4 7 k 100 kHz and 1 k 400 kHz 3 SCL Input Schmitt trigger input pin for serial clock input 2 WP Input Input pin for hardware write protection control If you tie this pin to VCC...

Page 37: ... Word Address Pointer Row decoder EEPROM Cell Array 128 x 8 bits 256 x 8 bits 512 x 8 bits HV Generation Timing Control Control Logic Column Decoder Data Register DOUT and ACK SCL WP SDA A0 A1 A2 Figure 2 1 S524A40X10 40X20 40X40 Block Diagram ...

Page 38: ...2 51 QO22 OCK _INV 100 RESERVED 99 PGND 98 PVCC 97 EXT_RES 96 AV CC 95 RXC 94 RXC 93 AGND 92 RX 0 91 RX 0 90 AGND 89 AV CC 88 AGND 87 RX1 86 RX 1 85 AV CC 84 AGND 83 AV CC 82 RX2 81 RX2 80 AGND 79 OVCC 78 QO23 77 OGND 76 DI FFERENTI AL SI GNAL ODD 8 bits RED EV EN 8 bits RED ODD 8 bits GREEN EV EN 8 bits GRE E N ODD 8 bits BL UE EV EN 8 bits BLUE CONFI G PI NS PLL PW R M ANAGE M ENT GPO OUT PUT CL...

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