LG Electronics 32LM640S/640T-ZA OptionLNB, DVB-S2 LNB Part Allegro, PCBGND and AGND are connected

Page 42
DVB-S2 LNB Part Allegro

DVB-S2 LNB Part Allegro

(Option:LNB)

D6901-*1

LNB_SX34

D6903-*1

 

40V

40V

 

LNB_SX34

D6901

D6903

LNB_SMAB34

DCDC_GND and A_GND are connected

DCDC_GND and A_GND are connected in pin#27

PCB_GND and A_GND are connected

Input trace widths should be sized to conduct at least 3A

Ouput trace widths should be sized to conduct at least 2A

LNB_OUT (Option:LNB)DCDC_GND and A_GND are connected

C6915

C6916

C6913

C6914

 

 

 

 

 

 

18pF

18pF

33pF

33pF

 

D6904

2A

R6906

2.2K

40V

 

 

 

 

 

 

 

 

 

 

 

 

 

40V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LNB_SMAB34

C6901

 

C6902

C6912

 

 

 

 

C6906

 

 

 

 

 

 

 

0.01uF

 

1uF

68uF

 

 

 

 

68uF

 

 

 

50V

 

50V

35V

 

 

 

 

35V

 

 

 

 

 

 

 

LNB

 

LNB

LNB

 

 

 

 

LNB

 

 

 

 

 

 

 

 

 

 

 

 

close to

Boost pin(#1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DCDC_GND

 

 

 

 

 

 

 

 

 

 

DCDC_GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DCDC_GND and A_GND are connected in pin#27 3A

+12V_LNB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LNB

 

 

 

 

 

L6900

 

 

 

 

 

33UH

 

 

 

C6911

 

SP-7850_33

 

C6910

 

 

 

 

 

2.4A

 

10uF

 

0.1uF

 

 

 

50V

close to VIN pin(#25)

 

 

 

25V

 

 

 

 

 

 

 

 

 

LNB

 

LNB

 

 

 

 

 

 

 

 

OPT

LNB

OPT

LNB

LNB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Close

to Tuner

 

 

 

 

 

 

 

 

 

 

Surge

protectioin

 

 

 

 

1WD6900

LNB MBR230LSFT1G

30V LNB

C6900

0.22uF

LNB 25V

 

C6904

 

 

D6902

 

 

 

 

0.1uF

 

 

LNB_SMAB34

 

 

 

 

 

 

40V

 

 

 

LNB

50V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D6902-*1

 

 

 

 

 

A_GND

 

LNB_SX34

 

[EP]

 

GNDLX

 

 

 

40V

LNB

 

 

 

 

 

A_GND

 

 

 

 

 

 

 

 

 

 

DCDC_GND

LX

VIN

BFI

NC 9

BFO

 

 

 

 

 

A_GND

A_GND

 

 

 

 

 

 

 

 

BOOST

28

27

26

25

24

23

22

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

C6903 0.1uF

 

 

 

 

VCP

THERMAL

 

 

 

 

 

 

 

 

 

 

 

 

 

2

29

 

 

 

 

 

LNB

 

C6905 22000pF TCAP

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC6900

 

 

 

 

 

 

 

LNB

 

NC_1

4

 

 

 

 

 

 

 

 

 

 

 

 

A8290SETTR-T

 

 

 

 

 

 

 

 

 

 

TDO

 

 

 

 

 

A_GND

 

 

 

 

5

 

 

LNB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXTM 6

LNB_TX

 

 

TDI

7

 

 

 

 

 

 

 

 

 

 

 

 

8

9

10

 

11

 

12

13

14

 

 

 

 

 

 

 

 

 

 

 

 

 

A_GND

 

GND

VREG

SDA

 

ADD

 

SCL

NC 2

IRQ

 

 

 

 

 

33

 

 

 

 

33

 

 

 

 

 

 

 

LNB

 

 

 

C6909 LNB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C69070.22uF

R6900

 

 

OPT

R6901

OPT

 

 

 

 

LNB

C690827pF

 

 

 

 

 

 

 

 

 

 

 

 

 

27pF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A_GND

I2C SDA4

I2C SCL4

21NC_8

20NC_7

19BFC

18 NC_6

17

NC_5

A_GND

16NC_4

15NC_3

+3.3V_NORMAL

R6903

4.7K LNB

R6904

R6905

0

0

A_GND

DCDC_GND

A_GND

Max 1.3A

+12V+12V_LNB

L6901

BLM18PG121SN1D

C6917

LNB

 

 

C6918

0.1uF

 

 

 

0.1uF

50V

 

 

 

50V

LNB

 

 

 

LNB

 

 

 

 

 

THE

 

SYMBOL MARK OF THIS

SCHEMETIC DIAGRAM INCORPORATES

 

SPECIAL FEATURES IMPORTANT

FOR

PROTECTION FROM

X-RADIATION.

FILRE AND

ELECTRICAL

SHOCK

HAZARDS, WHEN

SERVICING IF

IS

ESSENTIAL

THAT ONLY

MANUFATURES SPECFIED

PARTS

BE

USED

FOR

THE

CRITICAL COMPONENTS IN

THE

 

SYMBOL

MARK

OF

THE SCHEMETIC.

 

 

Copyright © 2012 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

LNB

2011.11.21

69

LGE Internal Use Only

Page 41 Page 43
Image 42
Page 41 Page 43
Contents SERVICE MANUAL MODEL 32LM640S/640T32LM640S/640T-ZA LED LCD TVCopyright CONTENTSOnly for training and service purposes LG Electronics. Inc. All rights reservedBefore returning the receiver to the customer SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE Leakage Current Cold CheckAntenna Cold CheckSERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal1. Application range SPECIFICATION4. Model General Specification 2. Requirement for Testsymbolrate Symbolrate4.0Msymbols/s to 7.2Msymbols/s DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s5. Component Video Input Y, Cb/Pb, Cr/Pr 6. RGB input PC7. HDMI Input 7.1. DTV mode 7.2. PC mode1. Application Range ADJUSTMENT INSTRUCTION3. Automatic Adjustment 2. DesignationSET PC 3.2. MAC address D/L, CI+ key D/L, Widevine key D/L, ESN D/L3.4. LAN PORT INSPECTIONPING TEST 3.3. LAN3.6. CI+ Key checking method 3.7. WIFI MAC ADDRESS CHECK3.5. Model name & Serial number Download 3.5.1. Model name & Serial number D/L4.1.2. Equipment 4. Manual Adjustment4.1.1. Overview 4.1.3. Download method4.2.1. Overview 4.2. White Balance Adjustment4.2.4. Adj. Command Protocol 4.2.2. Equipment4.4. Local Dimming Function Check 4.5. Magic Motion Remote control test4.3. EYE-Q function check 4.2.7. LED White balance table4.8. LNB voltage and 22KHz tone check 4.7. Wi-Fi Test4.6. 3D function test 4.9. Option selection per country6. USB S/W DownloadService only 5. Audio4.12. GND and Internal Pressure check Rear BLOCK DIAGRAMSide HDMIEXPLODED VIEW IMPORTANT SAFETY NOTICEX-TAL EAX6430790* LD22* / LC22 EAX6443420* LT22* / LJ22* / LA22* / LB22NVRAM JTAG 10KPLACE AT JACK SIDE Place at JACK SIDEPLACE AT JACK SIDE SMD Gaskit 12.5TGASKITSMDUSB112.5TGASKITSMDUSB3 PLACE AT JACK SIDE PLACE AT MAIN SOC SIDEPLACE AT IC6000 H5TQ2G63BFR-PBC IC701 H5TQ2G63BFR-PBCIC703 IC105 LGE2112Only for training and service purposes PANELPOWER FROM LIPS & POWER B/DPowerDET On-semiMICOM MODEL OPTION Renesas MICOMFor Debug Eye Sensor OptionHDMI4 HDMI1UI HDMI3 UI HDMI2PC AUDIO RGB/ PC AUDIO/ SPDIFSPDIF OUT JK3603 SLIM-15F-D-2ESD for MTK JACKCOMMONRS232C CVBS 1 PHONE JACKCOMPONENT 1 PHONE JACK close to wafer IR & KEYZener Diode is RGB SensorUSB1 USBWIFI+5VUSB FOR USB1 USB2 MAX 1.5AFull Scart18 Pin Gender SCART GENDER2011.10.26 AR4800 ZigBeeRadio Pulse MREMOTE OPTIONALL MREMOTE OPTION 1/16WEthernet Block GP4MT5369 IC5800STA380BW 2011.11.21IC6000 SCART AUDIO MUTEAUDOUT EU/CHINAHOTELOPT A Z4580MTR-E1EARPHONE AMP HEADPHONE AMPOption FOR MTK Option FOR LG1152TU6500 T/C/S & H/NIM & T2/C TUNEREU & CHINAVout=0.6*1+R1/R2 TU6501DCDCGND and AGND are connected OptionLNBDVB-S2 LNB Part Allegro DCDCGND and AGND are connected in pin#27FOR COMMERCIAL AUDIO OUT OPTCOMMEREXTAMP AUDIO OUT JACK OPTCOMMEREXTAMP COMMEREXTAMPJACKFOR COMMERCIAL 12V OUT RS-232C 9 PIN OPTCOMMEREXT12V COMMERCIALOPTIONLVDSHIGHMID LVDS51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT Connector 2011.08.11LOCAL DIMMING AR7600L/DIMOUT LEVEL SHIFTER BLOCK POWER BLOCKTHIS IS REVERSE PATTERN T-ConHYNIXEMMC2GB Don’t Connect Power At VDDIeMMC I/F Just Interal LDO CapacitorPlace Near Micom LOGOLIGHT R8901 10KPage Applicable Model XXLM760S-ZB 2012 LED/LCD TV Engineering guideInstruction of new sub ass’ys How to use tool Download CONTENTNew features Main PCBs Block Diagrams, IIC Map Adjust way of new features widevine… Repair guideEPIEmbedded Point-Point Interface Features EPI InterfaceMerits Comparison EPI Interface mini-LVDS vs. EPIHF mini-LVDS TCON What to changeHF mini-LVDS xxLM760S-ZB Main PCB for BroadbandWIFI Chassis LD22E PCB P/No EAX64307905Side MTK5369 Block Diagram LM76Power load RearFull Scart18 Pin Gender Jack InterfaceMain SoC MTK IC6100GP4 Backend block diagram EPI & T-con R 47옴R0 옴 EPI CH4/5/6 GP4 Backend block diagram EPI & T-ConEPI CH1/2/3 50PinDual-link LVDS Output GP4 Backend block diagram LVDS Tx & Local DimmingLVDS Tx Block LVDSSEL “H”=JEIDA, “L” or NC=VESA LGDCables InterconnectionPCBs xxLM760S-ZA2012Y IR + Soft touch PCB Pinmap Circuit Block DiagramAss’y Picture Pin Configuration KEY1, KEY2 VoltagePower LED Scenario 2012Y IR + Soft Touch LED Lighting ScenarioSpec 내용 Introductions of GP4 Sensor Touch IC Manual of Touch SensitivityTouch Key Threshold Level Ta = 25ºC Touch EEPROM Register change with USB port Addr ValueIntroductions of 12Y RF ass’y + Magic Remote control Pairing Information Transmission Sequence 1. System™ Pairing Information Transmission Send to TV after Paired ™ Motion Data Transmissionhome powermute ← ok →Power Management 3. M4 Block DiagramAA x 2 Battery ConnectorManufacturer 4. Function list주요 Item Function5. RF Pairing / Un-pairing Method MethodDescription Introductions of 12Y WIFI built in ass’y Pin map WIFI Built in ass’y featureLGITBlock diagram WIFI built in featureWIFI Built in Block-diagramArcadyan WIFI Built in ass’y Specification 12Y Widevine & HDCP 2.0 & NETFLX 1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM1. Widevine? ‰ Why HDCP2.0? 2. HDCP 2.0 & NETFLIX?‰ Netflix ‰ HDCP3. DTCP? Current 4. Changed BOMAs-Was Æ 추가Copyright 2012 LG Electronics. Inc. All rights reserved Contents of LCD TV Standard Repair Process Content Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom PageCheck Power Board 12v,3.5v etc Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableA2 Check Power Board 24v output Replace T-con Board or module And Adjust VCOM3.5V,12V,20V or 24V… Check various voltages of Power BoardRevised date Normal Y voltage?Check RF Signal level CheckS/W Version Check S/W Version Check color by input -External Input COMPONENT -RGB Color error?A10/ A11 ※ Check andReplace Main B/D adjust VCOM External device screen error-Color errorVertical/Horizontal bar, residual image, light spot External Input error Component error RGB error HDMI DVICheck Power On ‘”High” Check Power LEDPower LED Y On? Measure voltage of each output of Power B/DIf Power Off mode is not displayed Check Power B/D voltage Error?Check Power Off Mode Power off ListCheck audio B+ of Power BoardCheck user menu Speaker off NormalIn case of External Input signal error Check and fix external device Check audio B+ VoltageCheck 3.5v on Power B/D Replace Power B/D or Replace Main B/D Check & Repair Cable connection Connector solderCheck IR Output signal Power B/D don’t have problemRecognition error External Input andaccordance Identify nose type Adjust VCOM F. Exterior defectContent Standard Repair Process Detail Technical Manual ALL MODELS24 Pin Power Board ↔ Main Board Edge LEDSMAW200-H24S YEONHO ALL MODELS 1. Checking method for remote controller for adjustment ALL MODELS Checking method date Appendix Exchange T-Con Board GRADATION Fuse Open, Abnormal power sectionAbnormal Display NoiseDim Light Appendix Exchange PSULED driverNo Light No picture/Sound OkAppendix Exchange the Module Un-repairable Cases In this case please exchange the moduleAppendix Exchange the Module Un-repairable Cases In this case please exchange the moduledate When st-by, only 3.5V is normally on For ’10 models, there is no voltage out for st-by purposeEdge LED Edge LED Check “power on” pin is high B. Power error Off when on, off whiling viewing ALL MODELS Only for training and service purposesStandard Repair Process Detail Technical Manual dateStandard Repair Process Detail Technical Manual ALL MODELSStandard Repair Process Detail Technical Manual LCD module change T-Con board change
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