LG LB800K Service Manual Download Page 18

Page: 18 / 38

PRINTED CIRCUIT BOARD

- 18

1. MAIN BOARD (Component Side)

C734

C731

C732

C733

C729

C730

C801

R202

R249

Q701

R741

R740

R129

R122

J710

D704

J706

C413

R407

C401

R402

R401

R403

R405

R404

R745

R747

R742

R748

U803

R744

R743

C802

R267

R285

R284

R265

R266

R286

R248

R776

R777

R782

Q702

Q103

R778

R779

R783

Q102

C106

C107

R131

R130

D703

D702

C1
14

100

R210

R208

R214

R272

R276

R802

R706

R287

R288

R277

R251

R201

R253

U201

Q202

R160

U107

U207

R132

R133

C1
18

D701

ZD706

C1
16

R21

R209

R207

R215

R216

R217

R250

C807

C806

R206

R275

Q201

R205

R264

C232

R252

R752

ZD710

R161

R170

R753

Q104

R172

R171

U106

U108

ZD707

C1
12

J704

C817

C819

L823

U401

C207

U205

R242

R243

R244

R292

Q108

R246

R247

R240

R241

C178

U702

D712

ZD71

R767

ZD704

ZD703

R408

R406

RA210

RA209

RA21

200

C211

C280

R227

R228

R278

R290

R291

ZD708

ZD709

R766

R765

C1
10

D714

D716

C845

J703

R409

C860

C408

RA206

RA208

RA207

U203

190

180

C210

C204

C281

C282

R225

R226

R224

R223

C108

R718

D739

D738

R825

R807

L830

R809

U802

R813

R814

C410

MODEL:LB800K

U801

P/N :6870T570A10

RA204

TE :2002.10.05

RA203

RA205

170

C125

R770

R771

R772

R773

R774

R775

D735

D737

R719

D734

D736

L81

C840

R810

C818

R811

R812

R819

R815

R816

R817

R818

R820

R801

RA200

RA202

RA201

100

120

110

140

130

150

C202

R268

160

L101

C128

U701

C702

C130

R151

D733

D732

ZD701

C706

C808

C81

C809

R800

R219

R220

R289

C810

R221

R229

R230

R231

R232

R233

C201

U1
10

U109

C161

C177

R153

ZD702

J708

ZD705

J702

C813

C812

C285

R280

R281

R297

R298

R299

X201

C160

Summary of Contents for LB800K

Page 1: ...MENU SOURCE AUTO SEL ECT COLOR MONITOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO CL 42 FACTORY MODEL LB800K MODEL L1810B LB800K VL ...

Page 2: ...5Hz DVI Analog Digital 1280 x 1024 60Hz 5 POWER SUPPLY 5 1 Power Adaptor Built in Power Input AC 100 240V 50 60Hz 1 0A 5 2 Power Consumption 6 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 50 000 Hours Min 7 DIMENSIONS with TILT SWIVEL Width 406 mm 15 98 Depth 223 mm 8 77 Height 427 mm 16 81 8 WEIGHT with TILT SWIVEL Net Weigh...

Page 3: ...d T M D S Data3 T M D S Data3 5V Power Ground return for 5V H Sync and V Sync Pin Signal DVI I 1 8 9 17 24 16 C1 C4 C3 C2 C5 16 17 18 19 20 21 22 23 24 C1 C2 C3 C4 C5 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 Analog Red Analog Green Analog Blue Analog H Sync Analog Ground T M D S Transition Minimi...

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: ... 60 0 806 768 3 6 29 H 60 123 1312 1024 16 96 176 V 75 029 800 768 1 3 28 H 68 681 1456 1152 32 128 144 V 75 062 915 870 3 3 39 H 61 805 1504 1152 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 25 175 28 321 25 175 31 5 40 0 49 5 57 283 65 0 78 75 100 0 92 9...

Page 6: ...ust items in the On Screen Display Bring up Contrast and Brightness adjustment 5 AUTO SELECT Button Use this button to enter a selection in the On Screen Display AUTO adjustment function When adjusting your display settings always press the AUTO SELECT button before entering the On Screen Display OSD This will automatically adjust your display image to the ideal settings for the current screen res...

Page 7: ...B 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 When connecting t...

Page 8: ...03 J706 P902 J710 CN1A CN2 CN3 CN4 CN7 CN6 CN5 CN1 8 WIRING DIAGRAM Connector Ass y P N 6631T11012P Connector Ass y P N 6631T25008Q Connector Ass y P N 6631T12002L Connector Ass y P N 6631T12002M Connector Ass y P N 6631T20015R ...

Page 9: ... R G B differential LVDS Low Voltage Differential Signaling Data 8 Bit or 16 Bit Add ress R G B even odd Power Digital Signal 5V 3 3V Reg DVDD 3 3V AVD D 3 3V ADC CLK U S D S USB HUB 12V AC Input AVD D 2 5V 2 5V Reg DVDD2 5V AVD D2 5V 3 3V Reg PVDD 3 3V 5V 5V D S Bus power USB Input Selector BA7657 R G B H V Sync Inverte r Output Inverter 12V BLOCK DIAGRAM ...

Page 10: ... which stores program data Reset IC The Scaler gets the video signal converted analog to digital interpolates input to 1280 X 1024 resolution signal and outputs R G B signal to transmitter The controlled data of each modes and user setting is stored in EEPROM Especially Micom pre amp ADC Video controller are merged to one chip Gm5120 by Genesis 3 Display Data Transmitter Part This part transmit di...

Page 11: ...rectifier and a bulk capacitor 3 Energy Transfer This part function is transfer the primary energy to secondary through a power transformer 4 Output rectifier and filter This part function is to make a pulse width modulation control and to provide the driver signal to power switch to adjust the duty cycle during different AC input and output loading condition to achive the dc output stablize and a...

Page 12: ...lay color 0 0 pattern at Mode 15 2 Select COLOR BIAS CALIBRATION command and Enter 3 No attempt to manually adjust BIAS data is auto matically adjusted and saved to the EEPROM 4 Display color 15 0 pattern at Mode 15 5 Select GAIN CALIBRATION command and Enter 6 6500K and 9300K are automatically adjusted and saved to the EEPROM 7 Select COLOR PRESET END command and Enter 4 Adjustment for EDID 1 Use...

Page 13: ...WER TROUBLE IN POWER CHECK J703 5VST VOLTAGE 5V NO NO POWER POWER INDICATOR OFF TROUBLE SOMEWHERE ELSE TROUBLE IN POWER CHECK J703 INPUT VOLTAGE 12V NO TROUBLE IN U203 or X201 NO YES YES YES CHECK U203 s PIN 151 IS THIS PIN OSCILLATED ...

Page 14: ...BLE IN POWER CHECK J705 PIN 28 29 30 5V NO NO RASTER TROUBLE IN POWER CHECK J703 PIN 1 2 12V NO TROUBLE IN U801 CHECK U801 3 3V NO TROUBLE IN U201 CHECK U201 NO TROUBLE IN U203 NO YES YES YES YES CHECK R234 R235 R237 PULSE ...

Page 15: ... 15 CHECK DOT CLOCK PATTERN NO CHECK DVS PATTERN NO CHECK DHS PATTERN NO YES YES YES YES TROUBLE IN LCD MODULE CHECK U401 PIN 8 V PULSE CHECK U401 PIN 7 H PULSE CHECK U401 PIN 10 PULSE ...

Page 16: ... 16 3 NO CLOCK CLOCK GENERATOR NO DOT CLOCK TROUBLE IN X201 CHECK X201 20MHz NO TROUBLE IN U203 CHECK R237 CLOCK NO YES YES ...

Page 17: ...BLE IN DPM TROUBLE IN DPM TROUBLE IN PC CHECK PC PC IS NOT GOING INTO DPM OFF MODE NO TROUBLE IN X201 NO TROUBLE IN SIGNAL CABLE NO YES YES YES CHECK U203 PIN 152 WAVEFORM 20MHz CHECK R711 R712 CHECK U203 PIN 44 ...

Page 18: ...60 70 U401 1 C207 U205 50 40 30 20 R242 R243 10 R244 R292 1 Q108 R246 R247 R240 R241 C178 U702 D712 ZD711 R767 ZD704 ZD703 R408 R406 RA210 RA209 RA211 60 200 C211 C280 R227 R228 R278 R290 R291 ZD708 ZD709 R766 R765 C110 D714 D716 C845 J703 R409 C860 C408 RA206 RA208 RA207 80 70 U203 190 180 C210 C204 C281 C282 R225 R226 R224 R223 C108 R718 D739 D738 R825 R807 L830 R809 U802 R813 R814 C410 MODEL LB...

Page 19: ...18 C206 C245 C214 C247 C246 C244 R142 C120 C111 C113 D709 R711 R712 R733 R734 C215 C227 R239 C234 C235 R140 R135 R768 R761 D723 R729 C209 R234 C219 C218 C217 C229 C228 C236 C237 C238 C124 R760 R150 C109 R769 D724 C213 C212 R237 R235 R236 R282 C283 C284 C230 C239 C240 C241 C727 D722 D721 C216 C221 R283 C220 C222 C226 C223 C225 C224 C233 C242 R727 R726 R732 C728 D720 D718 D719 D717 C231 R702 D711 ...

Page 20: ... 20 3 POWER BOARD Component Side 4 POWER BOARD Solder Side ...

Page 21: ...3 R21 C24 L13 C23 R32 C39 R31 R28 R30 C38 C37 L18 U3 L4 L5 C42 C43 R19 U2 R8 R25 C6 L16 R26 R41 D1 R34 R35 C32 R2 DATE 2001 11 14 R37 C8 L17 R1 R9 C31 C9 R40 C28 C1 C2 P N 6870T413U11 MODEL LB782F USB X1 C27 U1 5 CONTROL BOARD SW8 LED1 A G C6 SW7 SW6 C5 SW5 SW4 SW3 C3 SW2 SW1 C1 C2 C4 J1 ...

Page 22: ... 22 EXPLODED VIEW 1 19 20 21 11 10 6 5 13 14 17 18 4 15 16 c f e d 12 a a b 3 9 8 2 7 ...

Page 23: ...SSEMBLY LB800H PWB PCB ASSEMBLY SUB LB800K CONTROL TOTAL BRAND CL 42 CONNECTOR ASSEMBLY 30P H H 100MM UL20276 PANEL LINK LB886F INVERTER ASSEMBLY AMBIT K11I010 01 6 LAMPS LB800K METAL ASSEMBLY FRAME MAIN FRAME LB800K PWB PCB ASSEMBLY MAIN LB800K ALRDV BRAND CL 42 TOTAL PWB PCB ASSEMBLY POWER LB800H POWER TOTAL BRAND SHIELD REAR LB886F METAL REAR LB800H COVER LB800H STAND TOP HINGE COVER LB800H STA...

Page 24: ...PTION SPECIFICATION C231 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C232 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C233 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C234 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C235 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C236 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C237 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C238 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C239 0CK104CK56A 0 1UF 1608 ...

Page 25: ...00A BA033FP E2 MOLD 3 TP REGULA U802 0TFVI80036A SI3861DV VISHAY R TP TSOP 6 U803 0IPMGFA003B RC1117S 2 5 FAIRCHILD SOT 2 DATE 2002 11 06 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L101 6210TCE001G HH 1M3216 501 CERATEC 3216M L811 6210TCE001G HH 1M3216 501 CERATEC 3216M L823 6210TCE001Z HH 1M2012 600JT CERATEC R T L830 6210TCE001G HH 1M3216 501 CERATEC 3216M Q102 0TR390409AE FAIRCHILD KST3904 L...

Page 26: ...77 10K OHM 1 10 W 5 1608 R TP R752 0RJ1001D677 1K OHM 1 10 W 5 1608 R TP R753 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R T R760 0RJ0472D677 47 OHM 1 10 W 5 1608 R TP R761 0RJ0472D677 47 OHM 1 10 W 5 1608 R TP R765 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP R766 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP DATE 2002 11 06 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R767 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP R768 0...

Page 27: ... SW5 140 058E SKHV10910B LGEC NON 12V 20A SW6 140 058E SKHV10910B LGEC NON 12V 20A SW7 140 058E SKHV10910B LGEC NON 12V 20A SW8 140 058E SKHV10910B LGEC NON 12V 20A DATE 2002 11 06 S AL LOC NO PART NO DESCRIPTION SPECIFICATION LED1 0DLLT0208AA LITEON LTST C155KGJSKT R TP C1 0CH8107F611 100UF 16V M 85STD CYL R TP C2 0CK103CK51A 0 01UF 1608 50V 10 R TP B C6 0CH3105F946 1UF 16V Z F 2012 R TP C8 0CC15...

Page 28: ... 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 BLOCK DIAGRAM 1 24 1 ...

Page 29: ...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 30: ...or 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 31: ...SCHEMATIC DIAGRAM 31 1 GM5120 ...

Page 32: ... 32 2 LVDS ...

Page 33: ... 33 3 POWER ...

Page 34: ... 34 4 CONNECTOR ...

Page 35: ... 35 5 INPUT SWITCHING ...

Page 36: ... 36 6 KEY ...

Page 37: ... 37 7 USB ...

Page 38: ... 38 8 POWER ...

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Summary of Contents for LB800K

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LG LB800K, Service Manual, Page: 18 / 38

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Summary of Contents for LB800K

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