North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LA06H MODEL : 32LD340H 32LD340H-UA MODEL : 32LD330H 32LD330H-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67207503 (1106-REV00) Printed in Korea...
CONTENTS ....................2 SAFETY PRECAUTIONS ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION............... 11 EXPLODED VIEW .................. 20 SVC. SHEET ....................Copyright LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
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 Copyright LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
Page 5
CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Temp : 0 ~ 40 deg Humidity : ~ 80 % Storage Environment Temp : -20 ~ 60 deg Humidity : -85 % Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7
65% of the peak luminance of the “retail” mode, or the brightest selectable preset mode, of the product. Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only...
Page 8
65% of the peak luminance of the “retail” mode, or the brightest selectable preset mode, of the product. Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only...
Page 9
47.712 60.015 85.50 VESA(WXGA) 1280*1024 63.981 60.020 108.00 VESA (SXGA) 1600*1200 75.000 60.000 VESA (UXGA) 1920*1080 66.587 59.934 138.50 WUXGA Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10
HDTV 1080P 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
- ad 00 90 End adj. 3.3 Etc • Ship-out mode • Tool option menu • USB Download(S/W Update, Option, Service only) • ISP Download(Option) Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12
If ADC calibration is failure, “ADC RGB Fail” is displayed. Analog (RGB) EDID table 9) If ADC calibration is failure, after recheck ACD pattern or condition, retry calibration. Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Adj. menu 6.White Balance, you can select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 216 Gray pattern. Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 14
0.313+0.002 0.329±0.002 6500K 0.0000 5.4. HDCP (High-Bandwidth Digital Contents Protection) SETTING - HDCP setting is not necessary in This Chassis. Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 15
1. RF input : Mono, 1KHz sine wave signal, 100% Modulation 2. CVBS, Component : 1KHz sine wave signal 0.4Vrms 3. RGB PC : 1KHz sine wave signal 0.7Vrms Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 16
1) Push "IN-START" key in service remote controller. 2) Select "Tool Option 1" and Push “OK” button. 3) Punch in the number. (Each model has their number.) Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 17
When available AV signal comes to side AV jack, input SIGNAL 11P mode changing to AV2 automatically. No.3 Pin on Power nSPI mode Copyright LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 18
4) Checking b-LAN MAC Address Check whether it is same their address numbers or not between B-LAN Label and on the pc address numbers. Copyright LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
Page 19
11. Serial number download. Connect Bar Code scan equipment and TV set by RS-232C cable. 1) E2PROM Data Write 2) E2PROM Data Read Copyright LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
Page 21
S T _ 3 . 5 V - - > 3 . 3 7 5 V +12V/+15V 20V-->3.51V +24V +12V/+15V + 3 . 5 V _ S T - > 3 . 3 7 5 V FROM LIPS & POWER B/D +3.5V_ST PANEL_POWER 24V-->3.64V...
Page 23
B-LAN b_LAN MPI pin3 B-LAN POWER +5V_ST +5V_ST_PTC BLAN p o w e r c o n t r o l BLAN L1405 MLB-201209-0120P-N2 TU1002 5VST_JIG +5V_ST_PTC JK6001-*1 BLAN CHECK TMMB-H001P(W/O Tuner) BLAN +5V_ST_PTC P1400 PEJ027-04 YFDW254-06S E_SPRING +5V_BLAN BLAN_Au RF_OUT[NC] BLAN +12V_C_MPI...
Page 26
[51Pin LVDS Connector] ( F o r F H D 6 0 / 1 2 0 H z ) PANEL_VCC [30Pin LVDS Connector] (For HD 60Hz_Normal) L700 120-ohm WAFER_FHD P701 P700 FI-X30SSL-HF TF05-51S WAFER_HD WAFER_FHD C700 C701 C702 10uF 1000pF 0 .
Page 28
S e r i a l P o r t R1038 +5V_ST +5V_ST +3.5V_ST R1040 R1033 C1001 Q1004 IC1000 0 . 1 u F 2SC3875S(ALY) MC14053BDR2G R1036 Q1003 010:E16;016:N15;016:Y25;016:AA3 R1003 2SC3875S(ALY) ON semi UART3_TX R1031 R1002 R1005 016:X9 PTC_TX PTC_TX_S7 001:AJ24 001:AJ26 R1000...
Page 30
+5V_ST +3.5V_ST_PTC 12V power +3.5V_ST_PTC 0 OPT R6102 R6106 IC1608 IC1608-*1 +12V/+15V +12V_ST FM24C16A FM24C16B NC_1 NC_1 D1600 A t y p e D1601 B t y p e MBRA340T3G MBRA340T3G C6101 IC1607 +3.5V_ST_PTC 0 . 1 u F NC_2 NC_2 R1604 TXS0104EDR...
Page 31
VCC_1.5V_DDR VCC_1.5V_DDR VCC_1.5V_DDR VCC_1.5V_DDR VCC_1.5V_DDR DDR3 1.5V By CAP - Place these Caps near Memory VCC_1.5V_DDR DDR3 1.5V By CAP - Place these Caps near Memory A-MVREFDQ A-MVREFCA B-MVREFDQ B-MVREFCA Close to DDR Power Pin Close to DDR Power Pin CLose to Saturn7M IC CLose to DDR3 CLose to Saturn7M IC...
Page 32
+3.3V_Normal +3.3V_Normal IC200 MX25L8005M2I-15G +3.3V_Normal C1200 /SPI_CS 0 . 1 u F HOLD# SPI_SDO R1301 SCLK /FLASH_WP SPI_SCK R1304 SPI_SDI R1300 Q1300 KRC103S IC200-*1 MX25L8006EM2I-12G SO/SIO1 HOLD# SCLK S I / S I O 0 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
Page 33
GIT CAN H/N TUNER for US&KOR&BRAZIL&TAIWAN&AUS RF_S/W_CTL BST_CTL +B1[5V] NC_1[RF_AGC] NC_2 SCLT SDAT NC_3 NC_4 VIDEO +B2[1.2V] +B3[3.3V] RESET IF/AGC DIF_1[N] D I F _ 2 [ P ] SHIELD TU5001-*1 TDTR-T035F NTSC_2INPUT_H_LGIT ANT_PWR[OPT] BST_CNTL NC[RF_AGC] DVB_1INPUT_H_LGIT TU5001 NC(IF_TP) TDTJ-S001D VIDEO +5V_TU +5V_TU...
Page 35
AUDIO AMP +1.8V_AMP +3.3V_Normal IC404 AP1117E18G-13 ADJ/GND Vd=1.4V 120 mA +24V C434 C421 C446 0 . 1 u F 10uF 0 . 1 u F SPK_L+ D501 C540 OPT 0 . 0 1 u F 1N4148W R519 R526 L507 100V AD-9060 R527 C536...
Page 36
NON CI Region /PCM_REG /PCM_CD /PCM_OE PCM_5V_CTL /PCM_WE /PCM_CE /PCM_IORD /PCM_IOWR /PCM_IRQA PCM_RST /PCM_WAIT PCM_D[0] PCM_D[1] PCM_D[2] PCM_A[0] PCM_D[3] PCM_A[1] PCM_A[2] PCM_A[3] PCM_D[4] PCM_A[4] PCM_D[5] PCM_A[5] PCM_D[6] PCM_A[6] PCM_D[7] PCM_A[7] PCM_A[8] PCM_A[9] PCM_D[0-7] PCM_A[10] PCM_A[11] PCM_A[12] PCM_A[13] PCM_A[14] THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
Page 37
IC102 HY27UF082G2B-TPCB NAND FLASH MEMORY +3.3V_Normal +3.3V_Normal NC_1 NC_29 LGE107D (S7M Divx_Non RM) 2GBIT /PF_CE0 NC_2 NC_28 H : S e r i a l F l a s h <T3 CHIP Config(AUD_LRCH)> IC101 PCM_A[0-7] L : N A N D F l a s h NC_3 NC_27 /PF_CE1...
Page 38
: H I G H L O W U 3 _ E X T E R N A L : H I G H H I G H L214 MODEL_OPT_4 PWIZ TCON with LG FRC : HIGH HIGH 100/120Hz LVDS 50/60Hz LVDS VDD33 BLM18PG121SN1D...
Page 39
FPGA POWER 0 1 2 : S 2 6 ; 0 1 2 : A J 2 6 3 . 3 V _ P r o i d i o m +VCCINT_1.5V Pro:Idiom (XMARK) +3.3V_Normal 3 . 3 V _ P r o i d i o m MLB-201209-0120P-N2 L1228 L1227...
Page 41
Check IC1602 IIC communication Check IIC line or replace IC1602 state Check IR input state of IC1602 Check IR board 57pin Re-download PTC Micom Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 42
Check Q409 application circuit or Check Q409 output Voltage(12V) replace Q409 Replace Cable Check LVDS Cable Check LCD Module Control board Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 43
Replace L5003 Check tuner 1.2V power IC5001 Replace IC5001 2pin : 1.2V Replace Check Mstar LVDS output Mstar(IC101) or main board Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 44
Check tuner application circuit or Check IF Signal replace tuner. TU5001 #10, 11 Pin Check X201 Replace X201 and application circuit Replace IC101 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 45
After checking thoroughly all path once again, You should decide to replace Mstar or not. Can you see the normal waveform? Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 46
After checking thoroughly all path once again, You should decide to replace Mstar or not. Can you see the normal waveform? Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 47
After checking thoroughly all path once again, You should decide to replace Mstar or not. because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 48
After checking thoroughly all path once again, You should decide to replace Mstar or not. because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 49
After checking audio signal line, you should decide to replace item or not. Measure waveform at C250 because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 50
After checking audio signal line, you should decide to replace item or not. C236,C237,C238,C239,C4059,C4060,C244,C245 because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 51
Check HDCP key NVRAM(IC103) After checking the Power of this chip, you should decide to replace this or not. Power & I2C signal Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 52
After checking audio signal line, you should decide to replace item or not. Can you see the normal waveform? Check the connector & Speaker Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 53
I2C Block I2C Block M+S Output Block(37”/42”) M+S Output Block(37”/42”) POWER Block POWER Block LG Electronics/ BS Division Commercial Display H/W Gr. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 54
REAR JK1102 RJP_CTRL HDMI 2 I2C(SCL/SDA) Micom JK501 HDMI 1 (MSP430F5419IPZR) S/W Reset IC1602 RS-232C RX/TX RX/TX 24MHz MAX3232 (SVC) X-tal Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 55
S7(LGE105DB-LF-1) VSYNC0 COMP1_Y GIN1P/M COMP1_Pr RIN1P/M COMP1_Pb BIN1P/M CK+/-_HDMI2 B_RXCP/N D0+/-_ HDMI2 B_RX0P/N D1+/-_HDMI2 B_RX1P/N D2+/-_HDMI2 B_RX2P/N AV_CVBS_IN CVBS2P SIDEAV_CVBS_IN CVBS3P Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 56
I2S_OUT_SD COMP1_L_IN AUD_LRCK LINE_IN_0L I2S_OUT_WS COMP1_R_IN LINE_IN_0L S7(LGE105DB-LF-1) SIDEAV_L_IN LINE_IN_ SIDEAV_R_IN LINE_IN_2R PC_L_IN EXT_SPK LINE_IN_4L LINE_OUT_3L Power AMP PC_R_IN TPA6011A4PWPRG4 LINE_IN_4R Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 57
/PF_OE PCM_PF_CE1Z /PF_CE0 PCM_PF_CE0Z /PF_CE1 PCM_PF_CE1Z PF_ALE +3.5V_ST PCM_PF_CE0Z /PF_WE PCM_PF_WEZ SOC_RESET Micom RESET /PF WP (MSP430F5419IPZR) PCM PF_AD15 Reset Switch Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 58
DDCDA_DA/GPIO24 22 ohm IC1608 IC1608 IC801 +5V_Normal EEPROM DDCDB_CK/GPIO25 22 ohm PTC Micom DDC_SCL_2/SDA_2 (AT24C02BN) DDCDB_DA/GPIO26 22 ohm IC802 (MSP430F5419IPZR) IC1602 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 59
MAX9668 VCOMR / GMA (gamma voltage) (P_GAMMA) AMP_SDA VCOML VCOM IC601 VGH / VDD / VCC / VGL / HVDD VCOMR Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 60
VCC_1.5V_DDR +1.5V_DDR MP2212DN H5TQ1G63BFR-H9C L420 L1201 (DCDC)3A DDR3 IC1003 MAX3232CDR (RS-232C) IC1000, 1001 MC14053BDR2G (UART) P6000 Control IR & LED (#6) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 61
+3.3V_Normal IC405 L416 AOZ1073AIL L424 (DCDC)3A +5V_Normal IC406 AOZ1072AI L417 (DCDC)2A +5V_TUNER IC406 L430 AOZ1072AI (DCDC)2A PANEL_VCC Q409 L1412 AO3407A (FET) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 62
(Tuner) IC501 L504 NTP7000 (Audio AMP) IC404 +1.8V_AMP AP1117E18G-13 (LDO) IC103 CAT24WC08W (HDCP EEPROM) IC104 M24M01-HRMN6TP (EEPROM) IC102 HY27UF082G2B-TPCB (NAND Flash) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 63
VDD_LCM(+16V) VCOM (MINI LVDS) IC603 MAX9668ETP+ MAX17113ETL+ (MINI LVDS P-GMA) (MINI LVDS PMIC) VCC_LCM(+3.3V) L601 IC602 VGL(-5V) D603 MAX17119DS (Level Shifter) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...