LG 22LG3DDH Service Manual Download Page 30

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2. Digital TV Video

Check RF Cable & Signal

↓

Check Tuner 5V Power

TU1001 4Pin

→

Check IC1002
Check IC1003

↓

Check IF_P/N Signal

→

Bad Tuner. Replace Tuner.

↓

Check Check Demodulator Input

Clock(X1005)

→

Replace X1005

↓

Check IC1004(LGDT) Output

- AR1070, AR1071

→

Replace IC1004

↓

Check Mstar LVDS output

R847,R848….R856

→

Replace Mstar(IC100)

or Main board

3. Analog TV Video

Check RF Cable

↓

Check Tuner 5V Power

TU1001 4Pin

→

Check IC1002
Check IC1003

↓

Check CVBS signal.

TU1001 #19 Pin

→

Bad Tuner. Replace Tuner.

↓

Check Mstar LVDS output

→

Replace Mstar(IC100)

or Main board

LGE Internal Use Only

Summary of Contents for 22LG3DDH

Page 1: ...EAD THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LA96E MODEL 22LG3DDH 22LG3DDH UA North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL62195508 1006 REV00 ...

Page 2: ...nal Use Only Copyright LG Electronics Inc All right reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 8 EXPLODED VIEW 13 SVC SHEET ...

Page 3: ...perate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals p...

Page 4: ...n your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge b...

Page 5: ...e solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced...

Page 6: ...djustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL CSA IEC specification EMC FCC ICES IEC specification SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 4 General Specification TV No Item Specification Remark 1 Receivable System VSB 64 256 QAM NTSC M 2 Available Channel VHF 02 13 UHF 14 69 DTV ...

Page 7: ... O 2 1024 768 48 363 60 00 65 00 VESA XGA O 4 1280 768 47 776 59 87 79 50 CVT WXGA O 4 1360 768 47 720 59 799 84 75 CVT WXGA O 5 1366 768 47 13 59 65 72 DTV 6 720 480 31 469 59 94 27 00 SDTV 480P 7 720 480 31 500 60 00 27 03 SDTV 480P 8 1280 720 44 96 59 94 74 17 HDTV 720P 9 1280 720 45 00 60 00 74 25 HDTV 720P 10 1920 1080 33 72 59 94 74 17 HDTV 1080I 11 190 1080 33 75 60 00 74 25 HDTV 1080I 12 1...

Page 8: ...onnect port 3 with Power Code 2 Connect jack 1 with PTC Micom 3 Connect USB Cable to the computer 4 Download Program execution SAP Configuration Notice Because PTC Download JIG has internal memory it can save download files using download program SAP Configuration Push the START button 4 after file saving then it execute download 3 2 Execution of download program SAP Configuration 3 2 1 Execution ...

Page 9: ...ick Auto tab and set as below 6 click Run 7 After downloading check OK message 4 2 USB DOWNLOAD 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it s not work But your downloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory 4 Updating is staring LGE Int...

Page 10: ...equipment displays Impress Resolution 480i MODEL 209 in Pattern Generator 480i Mode PATTERN 08 in Pattern Generator MSPG 925 Series 3 Adjust by commanding AUTO_COLOR_ADJUST 0xF1 0x00 0x02 instruction 4 Signal equipment display Impress Resolution 1080i MODEL 223 in Pattern Generator 1080i Mode PATTERN 08 in Pattern generator MAPG 925 series 5 Adjust by commanding AUTO_COLOR ADJUST 0xF1 0x00 0x02 in...

Page 11: ...WRITE 1 Connect D sub Signal Cable to D Sub Jack 2 Connect HDMI Signal Cable to HDMI Jack 3 Write EDID DATA to EEPROM 24C02 by using DDC2B protocol 4 Check whether written EDID data is correct or not Refer to Product spec 5 Remark A week manufacture in address 0x10 can be changed And thus Checksum Address 0x7F can be also changed 5 2 1 EDID DATA 1 DIGITAL DATA 256Byte Remark A week manufacture in ...

Page 12: ...is different among the sets 5 4 Outgoing condition Configuration 1 After all function test press IN STOP Key by SVC Remote controller And Make Ship Condition 2 When pressing IN STOP key by SVC remocon Red LED are blinked alternatively And then turn off automatically Must not AC power OFF during blinking 5 5 Internal pressure 1 Test Voltage GND 1 5KV min at 100mA SIGNAL 3KV min at 100mA 2 Test Poin...

Page 13: ...ical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFE...

Page 14: ...R1304 470K R1297 75 R1241 100pF 50V C1251 12K R1207 12K R1210 AV_R_IN 008 R32 AV_L_IN 008 R32 100pF 50V C1250 470K R1208 470K R1206 10K R1205 10K R1211 AV_CVBS_IN 008 D26 47pF 50V C1252 75 1 R1215 BG2012B080TF L1218 BG2012B080TF L1217 3 3V 5V_GENERAL 10K R1248 KCN DS 1 0089 JK1204 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 AT24C02BN 10SU 1 8 IC1200 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC 5 6V D122...

Page 15: ..._SCL_1 008 D37 002 S20 D2 _HDMI1 008 D38 JP503 D0 _HDMI1 008 D39 JP502 0 R576 0 R572 0 R569 0 R573 0 R570 0 R571 0 R574 0 R575 8pF 50V OPT C515 8pF 50V OPT C512 4 7K R536 DDC_SDA_1 008 D38 002 I24 CAT24C02WI GT3 IC500 3 A2 2 A1 4 VSS 1 A0 5 SDA 6 SCL 7 WP 8 VCC DDC_SCL_1 008 D37 002 I23 5V_HDMI_1 4 7K R539 5V_GENERAL 100 R545 10K OPT R542 22 R530 EEPROM_WP 008 AR22 001 AK23 ENKMC2838 T112 D501 A1 ...

Page 16: ..._L 003 P20 6 8K OPT R2236 1 6K R2227 390 R2226 1K R2225 3 3K R2234 2SC3875S ALY Q1103 E B C 4 7K R2242 10uF 6 3V C2140 1uF 10V C2142 4 7K R2240 100 R2237 100 R2232 PEJ024 01 JK300 6B T_TERMINAL2 8 SHIELD_PLATE 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 7A B_TERMINAL1 6A T_TERMINAL1 3 E_SPRING 0 R2250 EXT_SPK 008 U28 TPA6011A4PWPRG4 IC300 3 PVDD_1 2 ROUT 4 RHPIN 1 PGND_1 6 RIN 5 RLINEIN 7 VDD 8 LIN 9 LLI...

Page 17: ...7K R1421 JP603 12V 4 7K R1410 0 1uF 50V OPT C1408 L1406 OPT ERROR_OUT 008 AB20 MLB 201209 0120P N2 L1401 L1405 L1404 OPT 3 5V_ST 1uF 25V OPT C1418 JP601 0 OPT R1409 PWM_DIM 008 AF11 007 N24 100uF 16V C1405 22uF 16V C1400 4 7K R1405 OPT OPC_OUT 007 N24 0 R1419 0 1uF 50V C1419 BLM18PG121SN1D L1407 OPT 1uF 25V C1420 RT1P141C T112 Q1409 1 2 3 0R1400 15pF 50V C1410 10K R1401 4 7K R1403 5V_ST_PTC OR_REL...

Page 18: ... L1010 100 R1028 OPT FE_VMAIN 008 D24 0 R1021 0 1 u F 50V C1014 270 R1019 5V_TU 0 OPT R1018 270 R1020 5V_TU 0 01uF 25V C1008 10uF 10V C1011 22 R1023 22 R1022 0 R1027 0 R1026 27pF 50V OPT C1024 27pF 50V OPT C1025 100pF 50V C1017 100pF 50V C1015 L1012 L1001 82pF 50V C1004 500 L1005 500 L1003 500 L1007 500 L1008 220uF 16V C1013 0 OPT R1031 0 R1033 0 R1032 ISA1530AC1 Q1001 E B C ISA1530AC1 Q1000 E B C...

Page 19: ...NC3 K7 RAS F8 VSSQ3 F3 LDM P3 A9 M3 A1 N3 A5 K8 CK R3 NC5 L3 BA1 J7 VSSDL L7 CAS F2 VSSQ4 B3 UDM M2 A10 AP K2 CKE R7 NC6 M7 A2 N7 A6 M8 A0 J1 VDDL K3 WE E8 LDQS P7 A11 K9 ODT A2 NC1 N2 A3 P2 A7 H8 VSSQ1 F7 LDQS A8 UDQS R2 A12 L8 CS E2 NC2 E7 VSSQ5 D8 VSSQ6 D2 VSSQ7 A7 VSSQ8 B8 VSSQ9 B2 VSSQ10 P9 VSS1 N1 VSS2 J3 VSS3 E3 VSS4 A3 VSS5 G9 VDDQ1 G7 VDDQ2 G3 VDDQ3 G1 VDDQ4 E9 VDDQ5 C9 VDDQ6 C7 VDDQ7 C3 ...

Page 20: ...0 R856 TXAC 4 TXA1 9 0 R849 0 R853 LVDS_TXAC TXA3 3 LVDS_TXA3 TXA4 0 0 R854 0 R855 0 R852 LVDS_TXA0 LVDS_TXA0 LVDS_TXA3 LVDS_TXA1 LVDS_SEL 008 AR30 LVDS_TXAC 0 R859 OPT 0 OPT R857 0 R860 OPT PWM_DIM 008 AF11 004 R21 OPC_OUT 004 R20 LVDS_TXA2 OPC_EN 008 AQ28 LVDS_TXA2 0 OPT R858 GND GND FI X30SSL HF P800 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 LVDS_...

Page 21: ...CK B2 HOTPLUG_A A2 RXBCKP C3 RXBCKN B1 RXB0P C1 RXB0N C2 RXB1P D2 RXB1N D3 RXB2P E3 RXB2N D1 DDCD_B_DA E1 DDCD_B_CK F3 HOTPLUG_B E2 RXCCKP AE8 RXCCKN AD8 RXC0P AD9 RXC0N AF8 RXC1P AF9 RXC1N AE9 RXC2P AE10 RXC2N AD10 DDCD_C_DA AE7 DDCD_C_CK AF7 HOTPLUG_C AD7 CEC J3 HSYNC0 SC1_ID N2 VSYNC0 SC1_FB N1 RIN0P SC1_R P2 GIN0P SC1_G R3 BIN0P SC1_B R1 SOGIN0 SC1_CVBS P3 RINM P1 BINM T3 GINM R2 HSYNC1 DSUB_H...

Page 22: ...167 330 R2270 10K R2341 0 R2345 100K R2304 GND 4 7K R2274 0 R2307 4 7K R2300 0 R2265 SPI_DATA_IN 009 T11 0 22uF C2169 SPI_DATA_OUT 009 T11 PEJ024 01 JK1404 6B T_TERMINAL2 8 SHIELD_PLATE 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 7AB_TERMINAL1 6A T_TERMINAL1 3 E_SPRING SAM2333 LD903 A2 RD C A1 GN 47pF 50V C2171 100 R2282 2SC3875S ALY Q1112 E B C 0 R2348 0 1uF 50V C2150 330 R2338 4 7K R2299 100 R2357 SAM2...

Page 23: ...1 A15 IO2_2 B14 IO2_3 C13 IO2_4 B13 IO2_5 A13 IO2_6 B12 IO2_7 A2 IO2_47 E12 IO2_9 E11 IO2_10 E9 IO2_11 D12 IO2_12 D11 IO2_13 B3 IO2_46 B11 IO2_15 A11 IO2_16 D10 IO2_19 A9 IO2_20 D9 IO2_22 C4 IO2_45 E10 IO2_24 B4 IO2_44 D8 IO2_26 E8 IO2_27 A8 IO2_28 D7 IO2_30 A4 IO2_43 B7 IO2_32 A6 IO2_33 E7 IO2_34 P12 IO4_41 CH_DATA 7 P11 IO4_35 CH_DATA 6 P10 IO4_33 CH_DATA 5 P9 IO4_28 CH DATA 4 P8 IO4_24 CH_DATA ...

Page 24: ...04 4 7K R1110 100 R1115 0 R1104 0 1 u F C1105 0 R1105 BG2012B080TF L1103 KEY_CTL_1 009 AO29 1000pF 50V C1106 4 7K R1113 IR 008 O6 009 AJ9 0 1uF 16V C1108 CB3216PA501E L1102 5 6B ZD1112 5 6B ZD1110 5 6B ZD1111 5V_ST_PTC 5V_ST_PTC 1000pF 50V C1104 1000pF 50V C1102 UDZS5 1B 5 1V D1102 UDZS5 1B 5 1V D1101 LED_GR 009 AC33 LED_AM 009 AC33 12505WS 15A00 P1100 1 NC 2 NC 3 GND 4 GND 5 KEY0 6 KEY1 7 NC 8 5V...

Page 25: ... VEE 8 VSS 9 C 10 B 11 A 12 X0 13 X1 14 X 15 Y 16 VDD 2SC3875S ALY Q902 E B C 10K R926 100 R939 0 R914 5V_ST_PTC 5V_ST_PTC 22K R922 PTC_DEBUG_TX 009 AC30 012 D9 2SC3875S ALY Q904 E B C MSTAR_RX 008 AB27 ST3232CDR IC902 3 C1 2 V 4 C2 1 C1 6 V 5 C2 7 T2OUT 8 R2IN 9 R2OUT 10 T2IN 11 T1IN 12 R1OUT 13 R1IN 14 T1OUT 15 GND 16 VCC PTC_RX_MSTAR_5V 012 D13 0 R910 OPT R925 0 R913 PTC_TX_MSTAR 008 AQ28 PTC_D...

Page 26: ... AQ34 USB_DM 008 AQ34 CB3216PA501E L1300 180 R2513 MIC2009YM6 TR IC1304 3 ENABLE 2 GND 4 FAULT 1 VIN 6 VOUT 5 ILIMIT 4 7K R2515 10uF 10V C2248 5V_EXT 10K R2518 0 1uF C2249 3 3V USB_CTL USB_OCD 47 R2514 5 6V D1305 ADMC5M03200L 5 6V D1304 ADMC5M03200L 47uF 10V C2252 47uF 10V C2251 USB DOWN STREAM UB01123 4HHS 4F P1207 1 2 3 4 5 SIGN799 13 14 USB JACK U S B 5 V O v e r C u r r e n t P r o t e c t i o...

Page 27: ...540 220uF 25V C1502 1 10W 470 5 R1523 P_CH_UP 009 K26 P_GND UPS_Power 1 10W 470 5 R1522 12VDC_1 014 N20 014 AC2 1 4W 0 5 R1525 33 R1535 33 R1539 1 10W 1K 5 R1518 0 R1511 33 R1542 1 8W 200 1 R1530 0 1uF 50V C1503 GND 1 10W 1K 5 R1517 PC17L1 5V 35V 4P IC1502 2 1 3 4 3K R1543 P_ON_OFF 009 R26 PC17L1 5V 35V 4P IC1503 2 1 3 4 1 8W 750 1 R1524 1 8W 200 1 R1529 33 R1547 0 R1514 OPT 0 022uF 50V C1509 5VD ...

Page 28: ......

Page 29: ...8 OR_RELAY_ON 1Pin 3 5V NO Re download software PTC OK Replace Mstar IC100 or Main board OK Check Multi Voltage P1408 17pin 12V 2pin 24V NO Replace Power board OK Check Q706 Output 12V 5V NO Replace Q706 OK Check inverter control error P1408 18pin Low P1408 20pin high NO Check Power board or Module OK Check Mstar LVDS output R847 R848 R856 NO Replace Mstar IC100 or Main board Copyright ⓒ 2010 LG E...

Page 30: ...R1070 AR1071 NO Replace IC1004 OK Check Mstar LVDS output R847 R848 R856 NO Replace Mstar IC100 or Main board 3 Analog TV Video Check RF Cable OK Check Tuner 5V Power TU1001 4Pin NO Check IC1002 Check IC1003 OK Check CVBS signal TU1001 19 Pin NO Bad Tuner Replace Tuner OK Check Mstar LVDS output NO Replace Mstar IC100 or Main board Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for tr...

Page 31: ...rted OK Check RGB Cable conductors for damage OK Check JK1204 NO Replace Jack OK Check EDID NO Replace the defective IC or re download EDID data OK Check signal R G B H V Sync C113 C108 C114 R146 R149 NO Check other set If no problem check signal line OK Check Mstar LVDS output NO Replace Mstar IC100 or Main board Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service...

Page 32: ...n conductor OK Check JK500 NO Replace Jack OK Check EDID EEPROM IC500 I2C Signal 5 6 NO Replace the defective IC or re download EDID data OK Check HDCP key NVRAM IC105 power I2C Signal 5 6 NO Replace the defective IC OK Check HDMI Signal NO Check other set If no problem check signal line NO Replace Main board OK Check Mstar LVDS output NO Replace Mstar IC100 or Main board Copyright ⓒ 2010 LG Elect...

Page 33: ...ace IC100 OK Check IC600 Power 24V 3 3V 1 8V NO Check Regulaor IC601 IC3001 OK Check Output Signal P1400 1 2 3 4 PIN NO Replace NTP Audio AMP IC600 OK Check Connector P600 NO Replace connector if found to be damaged OK Check speaker resistance and connector damage NO Replace speaker Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 34: ...5 NO Replace X1005 OK Check IC1004 LGDT Output AR1070 AR1071 NO Replace IC1004 OK Check Output Signal P1400 1 2 3 4 PIN NO Replace NTP Audio AMP IC600 OK Check Connector P600 NO Replace connector if found to be damaged OK Check speaker resistance and connector damage NO Replace speaker Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use On...

Page 35: ...F Signal line OK Follow procedure All source audio trouble shooting guide NO Replace Mstar IC100 or Main board 11 Pillow Speaker Audio Check Switch SW1500 Location Pillow Speaker OK Check Connection JK1500 NO Replace Connector if found to be damaged Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 36: ...K PACK at REAR at REAR JACK PACK JACK PACK at SIDE at SIDE SCL SDA_3 3V TR Buffer VSB Demod X tal Reset Switch Reset IC 12MH z TS In 0 7 TS_clk SOP Val H P Amp EEPROM EEPROM Data 16 31 DDR2 512Mbit Qimonda Hynix AV Component 1 Y Pb Pr L R CVBS L R Speaker Out 8ohm USB2 0 SCL SDA_3 3V IO Expander SCL SDA_3 3V GPIO DP DM O C Protector 5V 5V LCD Module LVDS MPEG2 LINUX AMP PTC MPI Control IR OUT 26LG...

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