47sl80yd-Sa Chassis Lj91t

Internal Use Only North/Latin Americ Nor icaa Europe/Africa Asia/Oceania

http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com

LCD TV SERVICE MANUAL CHASSIS : LJ91T

MODEL : 47SL80YD

47SL80YD-SA

CAUTION

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

CONTENTS

CONTENTS .................... ........................................... ............................................. ............................................. ............................. ...... 2 PRODUCT SAFETY ..................................................................................3 SPECIFICATION SPECIFICA TION ..................... ........................................... ............................................ ............................................. .......................6 6 ADJUSTMENT INSTRUCTION ...............................................................12 EXPLODED VIEW .................................................................................. 17 SVC. SHEET ...............................................................................................

SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical 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 Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified. When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet. Do not use a line Isolation Transformer during this check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to 0.5mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer. Leakage Current Hot Check circuit

SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE:

If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.

General Servicing Precautions 1. Always unplug the receiver AC power cord from the AC power source before; a. Removing or reinstalling any component, circuit board module or any other receiver assembly. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc". 3. Do not spray chemicals on or near this receiver or any of its assemblies. 4. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture 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 buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static type solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above.

Circuit Board Foil Repair

Removal

At IC Connections

1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. 2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.

To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).

Replacement

1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. 3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas). "Small-Signal" Discrete Transistor Removal/Replacement

1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend into a "U" shape the end of each of three leads remaining on the circuit board. 3. Bend into a "U" shape the replacement transistor leads. 4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered.

1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary). 2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern. 3. Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection. 4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire. At Other Connections

Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement.

1. Application range

3. Test method

This specification is applied to the LCD TV used LJ91T chassis.

2. Requirement for Test

1) Performance: LGE TV test method followed 2) Demanded other specification - Safety: CE, IEC specification - EMC: CE, IEC specification

Each part is tested as below without special appointment. 1) Temperature : 25±5ºC (77±9ºF), CST : 40±5ºC 2) Relative Humidity : 65±10% 3) Power Voltage : Standard input voltage(100~240V@50/60Hz) * Standard Voltage of each products is marked by models. 4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM. 5) The receiver must be operated for about 5 minutes prior to the adjustment.

4. Electrical specification 4.1 General Specification No Item 1. Receiving System 2. Available Channel

Specification 1) SBTVD / NTSC / PAL-M / PAL-N 1) VHF : 02~13 2) UHF : 14~69 3) DTV : 02-69

Remark

5. Chromiance & Luminance spec. No Item 1. Max Luminance (Center 1-point / Full White Pattern)

Module

Set

2. Luminance uniformity RED 3. Color 4. coordinate 5. GREEN 6. BLUE 7. 8. WHITE 9. 10. RED GREEN BLUE WHITE

X Y X Y X Y X Y X Y X Y X Y X Y

Min Typ 480(TBD) 540(TBD) 480 600 480 600 470(TBD) 590(TBD) 400 500 400 450 400 500 400 500 77 Typ. 0.638 -0.03 0.334 0.291 0.607 0.145 0.062 0.279 0.292 Typ. 0.638 -0.03 0.334 0.290 0.606 0.144 0.064 0.279 0.292

Max

Typ. +0.03

Typ. +0.03

Unit cd/m2 cd/m2 cd/m2 cd/m2 cd/m2 cd/m2 cd/m2 cd/m2 %

Remark 32SL80YD-SA 42SL80YD-SA 47SL80YD-SA 55SL80YD-SA 32SL80YD-SA 42SL80YD-SA 47SL80YD-SA 55SL80YD-SA Full white 32SL80YD-SA

42SL80YD-SA

11. Color coordinate uniformity 12. Contrast ratio

13. Color Temperature

Cool Standard Warm

14. 15. 16. 17.

Color Distortion, DG Color Distortion, DP Color S/N, AM/FM Color Killer Sensitivity

800:1 40000:1 (DCR) 1000:1 40000:1 (DCR) 800:1 40000:1 (DCR) 900:1 40000:1 (DCR) Typ. -0.015 Typ. -0.015 Typ. -0.015

1200:1 50000:1 (DCR) 1200:1 50000:1 (DCR) 1200:1 50000:1 (DCR) 1300:1 50000:1 (DCR) 0.269 0.273 0.285 0.293 0.313 0.329

N/A 32SL80YD-SA

42SL80YD-SA

47SL80YD-SA

55SL80YD-SA Typ. +0.015 Typ. +0.015 Typ. +0.015 10.0 10.0

43.0 -80

6. Component Input (Y, C B/PB, CR/PR)

85% Full white pattern ** The W/B Tolerance is –0.015 for Adjustment Dynamic contrast : off Dynamic color : off OPC : off % deg dB dBm

7. RGB Input (PC) No 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11

Resolution

H-freq(kHz)

PC 640*350 720*400 640*480 800*600 800*600 1024*768 1280*768 1360*768 1280*1024 1600*1200 1920*1080

31.468 31.469 31.469 35.156 37.879 48.363 47.776 47.712 63.981 75.00 67.5

V-freq.(Hz) 70.09 70.08 59.94 56.25 60.31 60.00 59.870 60.015 60.020 60.00 60

Pixel clock(MHz) 25.17 28.32 25.17 36.00 40.00 65.00 79.5 85.50 108.00 162 148.5

Proposed EGA DOS VESA(VGA) VESA(SVGA) VESA(SVGA) VESA(XGA) CVT(WXGA) VESA (WXGA) VESA VESA (UXGA) HDTV 1080P

DDC X O O O O O O O O O O

** RGB PC Monitor Range Limits

- Min Vertical Freq - 56 Hz - Max Vertical Freq - 62 Hz - Min Horiz. Freq - 30 kHz - Max Horiz. Freq - 80 kHz - Pixel Clock - 170 MHz

8. HDMI Input (PC/DTV) No 1

Resolution PC 640*350

H-freq(kHz) 31.468

V-freq.(Hz) 70.09

Pixel clock(MHz) 25.17

Proposed EGA

DDC X

9. Consignment Setting (OUTGOING CONDITION) No 1. 2. 3. 4. 5. 6 7.

Item

Input Mode Volume Level Mute Aspect Ratio System Color Booster Picture Picture Mode Backlight Contrast Brightness Sharpness Color Tint Color Temperature Picture Reset 8. Audio Sound Mode Auto Volume Clear Voice SRS TruSurround XT Balance TV Speaker 9. Time Clock Off Timer / On Timer Sleep Timer / Auto Sleep 10. Option Language (Menu/Audio)

Condition TV02CH 10 Off 16:9 PAL-M On Vivid 100 100 50 70 70 0 Cool Standard Off Off Off 0 On Auto Off Portugues

10. Mechanical Specification 32SL80YD-SA No. 1. Product Dimension

Item W/O Packing With Packing

2.

Product Weight

Width (W) 764.8 764.8 910

Content Length (D) 224.8 49.8 137

W/O Packing

12.9 11.2

With Packing

15

Height (H) 550.2 490.4 488

Unit mm mm mm mm mm Kg Kg Kg Kg

Remark With Stand W/O Stand With Stand W/O Stand With Stand W/O Stand With Stand W/O Stand

42SL80YD-SA No. 1. Product Dimension

Item W/O Packing With Packing

2.

Product Weight

Width (W) 1001.2 1001.2 910

Content Length (D) 261 45 228

W/O Packing

21 18.7

With Packing

22 5

Height (H) 689.7 623.2 770

Unit mm mm mm mm mm Kg Kg Kg

Remark With Stand W/O Stand With Stand W/O Stand With Stand W/O Stand With Stand

ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied all of the LJ91T LCD TV models, which produced in manufacture department or similar LG TV factory.

4. PCB Assembly Adjustment 4.1. CPLD DOWNLOAD : JTAG MODE

2. Notice 1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument. 2) Adjustment must be done in the correct order. But it is flexible when its factory local problem occurs. . 3) The adjustment must be performed in the circumstance of 25 ±5°C of temperature and 65±10% of relative humidity if there is no specific designation. 4) The input voltage of the receiver must keep 100~220V, 50/60Hz. 5) Before adjustment, execute Heat-Run for 5 minutes. • After Receive 100% Full white pattern (06CH) then process Heat-run (or “8. Test pattern” condition of Ez-Adjust status) • How to make set white pattern 1) Press Power ON button of Service Remocon

4.2. << PRINT PORT >> PIN MAP Pin 2 3 8 11

JTAG Mode Signal Name TCK TMS TDI TDO

4.3. << 10P WAFER >> PIN MAP

4.4. Using RS-232C Adjust 3 items at 3.1 PCB assembly adjustments “4.1.3 sequence” one after the order. O

Adjustment protocol

Order 1. Inter the

Set response ad 00 00 d 00 OK00x Command

Adjustment mode

2. Change the Source 3.Start Adjustment 4.Return the Response 5.Read

kb 00 40 kb 00 60 ad 00 10

(main) Adjustment data ad 00 20 (main) ad 00 30 6.Confirm ad 00 99 Adjustment

b 00 OK40x (Adjust 480i Comp1/1080p Comp1) b 00 OK60x (Adjust 1080p RGB)

OKx ( Success condition ) NGx ( Failed condition ) (main : component1 480i, RGB 1080p) 000000000000000000000000007c007b006dx

(main : component1 1080p) 000000070000000000000000007c00830077x

NG 03 00x (Failed condition) NG 03 01x (Failed condition) NG 03 02x (Failed condition) OK 03 03x (Success condition) 7. End of Adjustment ad 00 90 d 00 OK90x See ADC Adjustment RS232C Protocol_Ver1.0

5. Factory Adjustment 5.1 Manual Adjust Component 480i/1080p RGB 1080p O

O

Summary : Adjustment component 480i/1080i and RGB 1080p is Gain and Black levelsetting at Analog to Digital converter, and compensate the RGB deviation Using instrument - Adjustment remocon, 801GF(802B, 802F, 802R) or MSPG925FA pattern generator (It can output 480i/1080i horizontal 100% color bar pattern signal, and its output level must setting 0.7V±0.1V p-p correctly)

5.2 EDID (The Exte nded Displ ay Identification Data) / DDC (Display Data Channel) Download. * You must make it sure its resolution and pattern cause every

O

Summary • It is established in VESA, for communication between

- HDM2 EDID table (0x3D, 0x1C)

Edid data and Model option download (RS232) NO

Item

CMD 1

Enter download MODE

Download ModeIn

A

E

0

0

Edid data and Modeloption download

Download

A

E

*Note1

*Note2

Adjust Mode Out

A

E

9

0

Adjustment Confirmation

A

E

9

9

O

CMD 2

Data 0 When transfer the ’Mode In’ , Carry the command. Automatically download (The use of a internal Data) To check Download on Assembly line.

Manual Download • Write HDMI EDID data - Using instruments => Jig. (PC Serial to D-Sub connection) for PC, DDC adjustment. => S/W for DDC recording (EDID data write and read) => D-sub jack => Additional HDMI cable connection Jig. - Preparing and setting. => Set instruments and Jig. Like pic.5), then turn on PC and Jig. => Operate DDC write S/W (EDID write & read) => It will operate in the DOS mode.

PC

VSC B/D

- HDMI-3 EDID table (0x3D, 0x0C)

5.3 Adjustment Color Temperature (White balance) O

Using Instruments • Color Analyzer: CA-210 (CH 9) - Using LCD color temperature, Color Analyzer (CA-210) must use CH 9, which Matrix compensated (White, Red, Green, Blue compensation) with CS-2100. See the Coordination bellowed one. • Auto-adjustment Equipment ( It needs when Autoadjustment – It is availed communicate with RS-232C : Baud rate: 115200) • Video Signal Generator MSPG-925F 720p, 216Gray (Model: 217, Pattern 78) O

Connection Diagram (Auto Adjustment) • Using Inner Pattern

F u l l W h i t e P a t t er n

CA-100+ COLOR ANALYZER T Y P E ; C A - 10 0+

RS-232C

O

White Balance Adjustment If you can’t adjust with inner pattern, then you can adjust it using HDMI pattern. You can select option at "Ez-Adjust Menu – 7. White Balance" there items "NONE, INNER, HDMI". It is normally setting at inner basically. If you can’t adjust using inner pattern you can select HDMI item, and you can adjust. In manual Adjust case, if you press ADJ button of service remocon, and enter "Ez-Adjust Menu – 7. White Balance", then automatically inner pattern operates. (In case of "Inner" originally "Inner" will be selected. • Connect all cables and equipments like Pic.5) • Set Baud Rate of RS-232C to 115200. It may set 115200 orignally. • Connect RS-232C cable to set • Connect HDMI cable to set

O

White Balance Adjustment (Manual adjustment) • Test Equipment: CA-210 - Using LCD color temperature, Color Analyzer (CA210) must use CH 9, which Matrix compensated (White, Red, Green, Blue compensation) with CS2100. See the Coordination bellowed one. • Manual adjustment sequence is like bellowed one. - Turn to "Ez-Adjust" mode with press ADJ button of service remocon. - Select "10.Test Pattern" with CH+/- button and press enter. Then set will go on Heat-run mode. Over 30 minutes set let on Heat-run mode. - Let CA-210 to zero calibration and must has gap more 10cm from center of LCD module when adjustment. - Press "ADJ" button of service remocon and select "7.White-Balance" in "Ez-Adjust" then press " " button of navigation key. (When press " " button then set will go to full white mode) - Adjust at three mode (Cool, Medium, Warm) - If "cool" mode Let B-Gain to 192 and R, G, B-Cut to 64 and then control R, G gain adjustment High Light adjustment. - If "Medium" and "Warm" mode Let R-Gain to 192 and R, G, B-Cut to 64 and then control G, B gain adjustment High Light adjustment. - All of the three mode Let R-Gain to 192 and R, G, B-Cut to 64 and then control G, B gain adjustment High Light adjustment. - With volume button (+/-) you can adjust.

5.5 Test of RS-232C control Press IN-Start button of service remocon then set the “4.Baud rate” to 15200, Then check RS-232C control and

5.6 Selection of Country option. Selection of country option is allowed only North American model (Not allowed Korean model). It is selection of Country about Rating and Time Zone. • Models: All models which use LA75A Chassis (See the first page.) • Press “In-Start” button of Service Remocon, then enter the “Option” Menu with “PIP CH-“ Button • Select one of these three (USA, CANADA, MEXICO) defends on its market using “Vol. +/-“button.

EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical 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.

0 0 4

2 1 8

0 2 5

0 4 5 0 3 5

1 1 8 5 0 8

0 0 9 0 1 9

0 1 8 6 0 8

A

B

C

D

E

F

G

H

I

IC503 D3.3V

AZ1117H-1.8TRE1(EH13A)

+1.8V_AMP

7 INPUT

1 ADJ/GND

3 2

C548 10uF 10V

OUTPUT

C549 0.1uF 16V

GND

C551 0.1uF 16V

C552 10uF 10V

6 +24V

+24V_AMP

L511 MLB-201209-0120P-N2

SPK_L+

+24V_AMP

C515 0.01uF 50V

5

2 N P 0 2 1 0 9 0 2 1 0 2 B L M

R502 100 9:G7;9:I3;12:I4 AMP_RST C506 1000pF 50V

C514 22000pF 50V

D3.3V

4

L501

1uF

10V

C501 10uF 10V

C508 0.1uF L502 1 0 5 R 0

C504 100pF 50V

C503 10uF 6.3V

D502 1N4148W 100V OPT

0.01uF 50V

2S

L504 DA-8580 EAP38319001 2F

C540 0.1uF 50V

R523 4.7K

C538 0.47uF 50V

C532 1000pF 50V

1S

Change

BST1A

1

42

VDR1A

2

RESET

3

41 VDR2A 40 BST2A

AD

4 5

VSS_IO

6

CLK_I

7

C507 1000pF 50V

VDD_IO

8

DGND_PLL

9

R503

AGND_PLL

10

LFM

11

AVDD_PLL

12

DVDD_PLL

13

TEST0

14

C505 0.1uF 16V

IC501 NTP-3100L

NC

C523 16V1uF

R527 3.3

C541 0.1uF 50V

R524 4.7K

SPEAKER_L

3.3 C545 0.01uF 50V

22uH(L504,L505)

TO

15uH/6.3mm

After

SPK_L-

H3

SPK_R+

H3

DV1

C525 22000pF 50V

39 PGND2A_2 38 PGND2A_1

C510 10uF 10V

D503 1N4148W 100V OPT

37 OUT2A_2 36 OUT2A_1 35 PVDD2A_2 34 PVDD2A_1

D504 1N4148W 100V OPT

33 PVDD2B_2 32 PVDD2B_1

EAN60664001

31 OUT2B_2 30 OUT2B_1

R520

L505 DA-8580 EAP38319001 2S 2F

5.6 C533 1000pF 50V C534 1000pF 50V

1S

C546 C539 0.47uF 50V

C542

R525

0.1uF 50V

4.7K

C543

R526

0.1uF 50V

4.7K

0.01uF 50V R529

SPEAKER_R

3.3

1F

R530

22uH

R521 5.6

3.3 C547 0.01uF 50V

SPK_R-

+24V_AMP R522 3.3

2 D A K K A L 0 1 2 T B B 1 _ D T C C D C _ _ _ L 2 2 _ S V A W B S S R R R U R T B S D D O O O A D S 2 V S T T T F V B D D I I I N N N N G O O O P M M M

C518 1uF 10V

C513 0.1uF 16V

C527

C528

0.01uF 50V

0.1uF 50V

C530 0.1uF 50V

C529 330uF

C535 0.01uF 50V

WAFER-ANGLE

SPK_L+

4 L508 120-ohm

T_330uF_Capacitor

22000pF 50V

5

L507 120-ohm H5

C524

H5

SPK_L-

H4

SPK_R+

3 L510 120-ohm

R513 11:F7

BCM_I2S_DATA_OUT

11:F6

BCM_I2S_WORD_CLK

11:F7

BCM_I2S_BIT_CLK

9:I4;2:AH5

SDA1_3.3V

9:I4;2:AH5

SCL1_3.3V

R 50 5

1 00

R 50 6

1 00

R 50 7

1 00

R 50 8

1 00

R 50 9

1 00

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

100 H4

SPK_R-

1 P501

OPT

2A => 5A C509 33pF 50V

MCLK SDATA WCK BCK TP is necessory Monitor0_1_2 TP is necessory

1

2 L509 120-ohm

AMP_MUTE 12:F3 C517 33pF 50V

C512 33pF 50V

2

H3

29 PGND2B_2 5 6 7 8 9 0 1 2 3 4 5 6 7 8 1 1 1 1 1 2 2 2 2 2 2 2 2 2

+1.8V_AMP

3

H3

C544 0.01uF 50V

R528

1F 22uH

R519 5.6

C521 1uF 16V

DVSS_1

3.3K

C502 0.1uF 16V

C526

C531 1000pF 50V

6 5 4 3 2 1 0 9 8 7 6 5 4 3 5 5 5 5 5 5 5 4 4 4 4 4 4 4

C511

2 N P 0 2 1 0 9 0 2 1 0 2 B L M

C553 330uF 35V

5.6

C519 22000pF 50V 2 1 2 1 2 1 2 1 _ _ 2 1 _ _ _ _ 2 1 _ _ A A _ _ A A B B _ _ B B 1 1 A A 1 1 1 1 B B 1 1 B B D D 1 1 D D D D 1 1 D D 1 1 N N T T D D D D T T N N T R G G U U V V V V U U G G S D P P O O P P P P O O P P B V

R504 0

9:G6

2 N P 0 2 1 0 9 0 2 1 0 2 B L M

C522 0.1uF 50V

R518

L503

+1.8V_AMP AUDIO_M_CLK +1.8V_AMP

C520 0.1uF 50V

D501 1N4148W 100V OPT

R511 3.3

T_330uF_Capacitor

J

A

B

C

D

E

F

7

G

7 E : 4 1

6 E : 4 1

V 3 . 3 _ L C S _ M O C U

V 3 . 3 _ A D S _ M O C U

5 E : 4 1

5 E : 4 1

Y B T S _ M R A W _ D E L

N O _ R E W O P _ D E L

H

I

J

5 C : 4

T U O _ R O R R E

+3.3V_ST

6 2 D A : 2

R454

2K

R451

2K

M C B

6

0 0 1

C E C _ I M D H

+3.3V_ST

+3.3V_ST IC402

4 6 4 R

R489 33K

KIA7029AF I

C

3 O

1

B

G

C403 0.1uF 16V

8 8 K 4 3 R 3

C407 Q401 OPT OPT 2SC3875S(ALY)

E

GND

GND +3.3V_ST

5

GND

R430

K 7 7 2 . 4 4 R

GND OPT

M5V_ON R403

2 0 4 R

0 R416

T P O

R406 GND

4.7K

9 K 4 K 9 7 9 7 4 . 4 . R 4 R 4

14:A3;14:E6

R417

R420

IR R405 220

UCOM_RX

2

P1.7/SOGI

3 5

P4.3/AD3

6

22

HSDA1/P3.1/TXD

4 .7 K

P3.2/INT0

8

R423

OPT

P3.3/INT1

9

OPT R481

3

R478 10K

15K R492 0

OPT

C

B

C

B

R480 2.2K OPT

2SC3052 E

R490 0

10 11

23 P6.5

2

2 3 K 4 7 R 4

A1

OPT R486

1 GND

R483 0

2

1


R450

R467

0

22

X401 24MHz

A2

1 K 9 1 4 . R 5

VSS

GND

1

8

2

7

3

6

4

5

VCC C406 0.1uF WP 16V

5 1 4 R

K 7 . 4

3 1 4 R

K 7 . 4

+3.3V_ST

K 5 7 9 . 4 4 R

K 6 7 9 . 4 4 R

2 2

2 2

4 3 4 R

6 3 4 R

C408 22pF 50V

C409 22pF 50V

1 4 4 R

0

R 4 75

3 4 4 R

5 4 4 R

T P O

0

RESET

V 3 . 3 _ 2 A D S

V 3 . 3 _ 2 L C S

4 I : 9 ; 5 B : 9

4 I : 9 ; 5 B : 9

E T U M _ P M A 3 E : 3

N E _ C P O

9:C1

+5.0V

R

EDID_WP 14:A4

T P O

C GND

B

Q402 RT1N141C-T112-1 E

4.7K R455 4.7K

OPT R452 47K

GND

R462 100

OPT

C414 0.1uF 16V

C413

Y D A E R 5 I : 7

2 K 7 7 4 . R 4

+3.3V_ST OPT R459 4.7K

GND

O F

9:A7

100 OPT

0.1uF

T E P L O B A

V 2 . 1

1K

0 K 6 K 1 8 4 8 6 . R 6 4 6

M C B

GND SDA

4:C7;14:E5

AMP_RST 9:G7;9:I3;3:C5

N E

SCL

POWER_DET

3 K 5 1 4 R

6 4 4 R

4:C5

4:C5

100

KEY2 14:E6

2 2

RL_ON

OPT

GND

0 0 1

4:H1

FLASH_WP_1

INV_ON/OFF

100

R431

100

C412 0.1uF

R447

100

OPT

OPT

4 3 2 1 S 0 1 1 2 3 4 . . X X S D O . . . . 7 7 V A K 6 6 6 6 P P / L P P P P / / 0 C 2 2 . / A L 4 0 D C P . S S 6 H H P

OPT

R 4 68

R 4 49

2 3 4 5 6 7 8 9 0 1 2 1 1 1 1 1 1 1 1 2 2 2

R429 OPT

1 00 PANEL_CTL

R466

27 P7.1/VBLANK 26 P7.2/HCLAMP

ISCL/P7.5

8 T 2 P 4 O R

R 46 5

KEY1

A0 IC1003 NCP803SN293

R487 100K OPT

33 P5.4 32 P5.5

ISDA/P3.4/T0

C415 0.1uF 16V

C411 100uF 16V

16V

R456 100

OPT

3 V CC

C410 0.1uF

R484 30K

R482 30K OPT

E

RESET

+3.3V_ST

: 5 3 4 R

29 P7.0/HBLANK 28 P4.1/AD1

IC406

24LC16BT-I/SN

Q405 2SC3052

1K Q404

OPT R477 6.8K

0 OPT

0

MTV416GMF

+3.3V_ST

IC405

9:A7;I4

0

Y D A E R

22

+5V_ST +24V

POWER_DET

OPT R479

R476

R485 10K

9 3 4 R

22

+5.0V

T P O

5 3 4 R

R425

GND

+12V

4 4 4 R

T P O

R424

4.7K

+3.3V_ST

2 4 4 R

O F

T P O

0 0 1

25 P6.7 24 P6.6

R418

DETECT

T P O K 7 . 4

0 4 4 R

31 P5.6 30 P5.7/CLKO2

7

R 42 1

K 5 1

POWER

4 7 4 R

4

HSCL1/P3.0/RXD

OPT

UCOM_TX

14:I1

1

VSYNC/P1.6

22

R404 220

4

1 7 4 R

GND

RST

DDC_SDA

9:G7;14:A4

14:H2

0

DDC_SCL

9:G7;14:A4

0 7 4 R

V 2 . 1

0 0 1

4 3 2 1 0 9 8 7 6 5 4 4 4 4 4 4 3 3 3 3 3 3

HSYNC/P1.5

+3.3V_ST

T P O

0 0 1

100

1 0 4 K R 1

GND

0 0 1

3 2 1 0 2 2 A A A A T D D D D D E A / / / / / / 4 3 2 1 0 2 0 1 2 3 . . . . . . D . . . . 1 1 1 1 1 4 D 5 5 5 5 P P P P P P V P P P P

2 C402 0.1uF 16V

0 0 1

+3.3V_ST

4 1 K 4 0 R 1

7 0 K 4 7 R 4

E L B A N E

D3.3V

GND

14:E6

A

7

CONTROL

B

IR

&

C

D

LED

E

F

USB

JACK

&

USB

G

+5V

Current

H

I

Protection

D3.3V +5V_ST

BCM Tolerance

P701

1

2

6

3

VOUT

SCL

SDA

GND

D701

1 I M D H 5 0 C 3 S D C

1 I M D H 5 0 C 3 S D C

6

1

5

2

4

3

5

6

7

8

ILIMIT

VIN

D702

C716 0.1uF 16V

GND

UCOM_SDA_3.3V 12:F6

OPT C707 1000pF 50V

FAULT/

KEY1

R717

L704 BG2012B080TF

ZD701

C704 0.1uF ZD703

C706 0.1uF

L705 CB3216PA501E

9

C708 0.1uF

IR OPT

5

11

12

ZD702

C702 100pF

L701 BG2012B080TF

R712 0

B

D O W N

LED_WARM_STBY OPT

5 K 1 0 7 2 R 1

E

T P O

S T R E A M

L708 BLM18PG121SN1D

1

2

USB_DM2 10:D4

3

USB_DP2 10:D4

C714 100uF

4

+3.3V_ST

7 0 K 7 0 R 1

L702 CB3216PA501E

C701 0.1uF

OPT

U S B

R711 0

+3.3V_ST

C709 0.1uF 16V

13 GND

Q702 2SC3052

C710 0.1uF 16V

IR 12:D4;A3

3.3V_ST

POWER_ON

USB_POWER_OUT_2 Make this trace minimum 12 mil

KJA-UB-4-0004 JK702

+3.3V_ST 0 1 K 7 0 R 1

WARM_ST

GND

USB_OCD1 10:D4

47

+5V_ST

C

10

12:H3

KEY2 12:H3 5V_ST

C703 1000pF 50V

D703 D704 CDS3C05GTA CDS3C05GTA 5.6V 5.6V OPT OPT

5

OPT

OPT

0 R708

0 R714

Q701 2SC3052

B

LED_POWER_ON R709 4.7K

E

C715 100uF 16V

Not enough space

RL_ON C

2 N P 0 2 1 0 9 0 2 1 0 2 B L M

USB_CTL1 10:D5

L703 BG2012B080TF

KEY2

+5.0V

2 N P 0 2 1 0 9 L710 0 2USB_+5V 1 0 2 B L M

ENABLE

R716

KEY1

GND

L709 USB_5VST

UCOM_SCL_3.3V 12:F6

OPT C705 1000pF 50V

130 4

R721 2.7K

R718 2.7K

IC701 MIC2009YM6-TR

USB_POWER_OUT_2

12507WS-12L

R713 0

4

Blue

RS232_SWITCHING

D3.3V

Tooth

L707 11 JP712 10

R702 0

+5V_ST

RS232_BYPASS

IC702

C713 10uF 16V

9

8

0ISTL00024A R701 0

Y1

BCM_RX 9:G6 Y0 UCOM_RX 12:D4

1

16

2

15

L706 MLB-201209-0120P-N2

VDD

C711

A3 RS232C_RxD

Y

Z

Z0

INH

3

14

4

13

5

12

6

11

7

10

8

9

X

X1

0.1uF

C712

5

R703 0

5 0 0 7 R

RS232C_TxD

R720 0 4

3

+5.0V

X0 UCOM_TX

VSS

B

C

1


JP716 R719 0

12:D4

R706 4.7K

2

1

R704 100K 12507WR-10L P702

2

BLUETOOTH_RESET

9:G6

R_RS232_SWITCHING VEE

JP715

A3

USB_DM1 10:D4

JP713 D706 CDS3C05GTA 5.6V OPT

6

47uF 16V

RS232_BYPASS

BCM_TX

A

7

D705 CDS3C05GTA 5.6V OPT

R723 27

16V Z1

R722 27

JP711

MC14053BDR2G

3

E 1 0 5 A P 6 1 2 3 B C

VREG_CTRL

USB_DP1 10:D4

J

A

B

C

D

E

F

G

H

I

J

7 D3.3V

TU_+5.0V

T I G L

1 2 3 4 5

LGIT

6 TU102 TDYR-H071F

6

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

5

22 23

0 0 0 5 L

C5005-*1 0.1uF 50V LGIT

CTR

VTU

R50010 LGIT

RF_AGC

R50020 LGIT

16V 22uF C5000 LGIT

C5002 0.1uF 50V LGIT

TU101 VA1G5BF8005

B1[+5V]

1

NC_1

2

SIF

3

VIDEO_OUT

4

NC_2

5

NC_3 AIF

6 R50000

B2[2.5V]

7 LGIT

8

B3[3.3V]

9

B4[1.2V]

10

RESET[SYRSTN]

11

SDA

12

SCL

13

RSEORF

14

SBYTE

15

SPBVAL

16

SRDT

17

SRCK

18 C5001 22pF 50V

24 SHIELD

LGIT

C5003 22pF 50V LGIT

T P O

RF_SWITCH

0 C5005 2200pF 50V

RF-GAIN_SW B0[+5V]

5 1 K 0 7 5 . R 4

RF_SWITCH 3:T24

R5014 GAIN_SWITCH

0 R5013

GAIN_SWITCH 3:T24

C5007 2200pF 50V

TU_+5.0V

L5005

RF_SW C5012

C5016 C5014

0.01uF

22uF 0.1uF

GAIN_SW

D2.5V

BB

Place close to Pin B1 AFT

0

SIF

R5004

D3.3V

L5002

L5004 C5010 22uF

VIDEO

C5011 0.1uF C5015 22uF

B2

C5017 0.1uF A1[RD]

D1.2V

B3

RESET

22

R5005

SDA

22

R5006

SCL

22

R5007

TUNER_RESETb

C5018

3:T26

SDA0_3.3V

3:T26

SCL0_3.3V

3:T26

22uF

22

R5008

SRDT

22

R5012 R5009

SRCK

22

R5010

SPBVAL

TU_SYNC

TU_SCLK

C

A1[RD] A2[GN]

3:T27

TU_+5.0V

0

TU_SDATA

D3.3V

SAM2333 LD5001 R5023 1K

RSEORF SBYTE

330

R5025

LD5000 SAM2333 C5020 0.1uF

3:T27 L5007

3:T27

19 0 2 0 K 5 2 R 1

SHIELD SHARP

C5019 0.01uF

4 2 0 0 5 7 R5022 R 4

C5021 0.01uF

0

OPT

TU_SIF

R5021 10K

T J K 3 0 1 6 1 2 3 C I F

V 6 1

1 0 T 0 P 5 O L

C5004 91pF 50V OPT

3 0 T 0 P 5 2 O R 8

10uF C5009

3:T25

E 2SA1530A-T112-1R Q5000

B

4

C

A2[GN] L5006

B4

C

R5018 56 9 1 0 5 6 R 5

T P O

TU_CVBS_IN

3:T25

GND

3 +5V L5009 MLB-201209-0120P-N2

2 D N G

D3.3V

IC5001 KIA78R05F

C5031 0.1uF 16V

6

OPT C5033 4.7uF 10V

C5035 100uF 16V TU_+5.0V

6 2 0 0 5 0 R 1

1 N I V

2 C V

3 T U O V

4 C N

5 L5010 MLB-201209-0120P-N2

1 D N G

+12V C5032 0.1uF 16V

IC5002

2

AS7809DTRE1 INPUT

3 OUTPUT

1

L5008 MLB-201209-0120P-N2

2 GND C5022 0.1uF 16V

1


C5023 100uF 16V

C5024 0.1uF 50V

C5025 100uF 16V

C5026 0.33uF 16V

C5027 0.1uF 50V

C5028 47uF 16V

C5029 0.1uF 50V

C5030 0.01uF 50V

C5034 4.7uF 10V OPT

C5036 100uF 16V

Bloc k Diagram Diagram Overall Block Diagram for Brazil DTV (LH70)

TU_SCLK, TU_SDATA, TU_SYNC V A 1 G 5 B F 8 0 0 5

Qimonda/Hynix TU_SIF SDA0/SCL0_3.3V LVDS RF_Switch, Gain_Switch

FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k Block

AV1 AV2

DDR2(256Mbit)

TU_CVBS_IN

(FHD, 120Hz)

SIDE_CVBS, SIDE_L/R, SIDE_DET X-tal 12MHz

Y Pb Pr, L/R, L/R, DET

Component 1

Y Pb Pr, L/R, L/R, DET

Component 2

DDR_Data[0:15], DQS, DM …

RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix

Addr.[0:13], ctrl. data

Audio L/R

Audi Au di o L /R (fo r RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3

DDR2 (1Gbit) Elpida/Hynix

Data[16:31]

Data Data [0 … 7] CS ,RE,WE…… SPDIF

Digital Audio (Optic)

RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232

Bluetooth Module USB

NAND Flash (512Mbit)

+5V

Reset Switch

Copyright Copyright ⓒ 2009 LG Electronics. Electronics. Inc. All right right reserved. reserved. Only for training and service purposes

DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST

Digital AMP NTP3100L

NVRAM MICOM (MTV416GMF) JTAG

X-tal 24MHz

LGE Internal Use Only

I2C I2 C RS2 C un icati I2C I2 C& & RS232 RS232 RS232 32 Comm Comm Comm ommunicati unicati un ication on

Bloc k Diagram Diagram

Sub B/D

m h o k 7 . 4

V A 1 G 5 B F 8 0 0 5

P 7 0 1

22 ohm 22 ohm

47PF

Main Main B/D

D3.3V

D3.3V

m h o k 7 . 4

m h o k 7 . 4

22 ohm 22 ohm

SCL0 SDA0

m h o k 7 . 4

+3.3V_HDMI

m h o k 7 . 2

m h o k 7 . 2

SCL1

22 ohm

0 ohm

SDA1

22 ohm

0 ohm

HDMI S/W

47PF

100 ohm

NTP3100L

100 ohm

33PF 33PF

D3.3V

+5V_ST

m h o k 7 . 4

RS232C_RxD MAX3232 RS232C_TxD

m h o k 7 . 4

BCM3556

m h o k 7 . 4

P 7 0 2

m h o k 7 . 4

SCL3

22 ohm

22 ohm

SDA3

22 ohm

22 ohm

MICOM

100 ohm 100 ohm D3.3V

m h o k 7 . 4

SCL2 SDA2

Copyright Copyright ⓒ 2009 LG Electronics. Electronics. Inc. All right right reserved. reserved. Only for training and service purposes

22 ohm 22 ohm

m h o k 7 . 4

100 ohm

MST7323

100 ohm


Bloc k Diagram

• I2C channel [LH70]

CH0 (+3.3V)

CH0 TUNER TUNER 11 0xC2 0xC2 Demod(0x30) Demod(0x30) QPSK(0x32) QPSK(0x32)

CH1

CH1 (+ 3.3V) AMP AMP NTP3100L NTP3100L 0x54 0x54

HDMI HDMI SW SW TDA9996 TDA9996

BCM3556 BCM3556

CH2 (+3.3V)

CH2 EEPROM EEPROM AT24C512 AT24C512 0xA6 0xA6

Micom Micom MTV416 MTV416 0x50 0x50

CH3 (+3.3V)

CH3 FRC FRC MST7323 MST7323

Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes


Bloc k Diagram

D1.2V, D2.5V, +3.3V, +5.0V_ST SPDIF , EDID_WP …. SCL0_3.3V, SDA0_3.3V, DDC_SCL, DDC_SDA

Jack Board

MAIN Board

CVBS, SIF, AV, RGB ,COMPONENT, R/L,

TU_SCLK, TU_DATA, TU_SYNK’’..

< Signal Interface >



1. Power-Up Boot Fail Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k Block

AV1

(FHD, 120Hz)

SIDE_CVBS, SIDE_L/R, SIDE_DET

AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R

Audi o L /R (fo r RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]

Data [0 … 7] CS ,RE,WE…… SPDIF


RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


1. Power-Up Boot Fail Trouble Shooting Check P801 All Voltage Level (24V, 12V, 5V_ST)

N

Y Check Power connector

Replace Power board

Y Check All Voltage Level at L805/L807/L808

N

Replace one of L805/L807/L808 & Recheck

N

Replace one of IC809/Q812/L828/L829/L830/L822 & Recheck

N

N

Replace one of IC803/L824/L827 & Recheck

N

Y Check Voltage Level 3.3V at L830


Check Micom IC406 Redownload or replace

Y Check Voltage Level 1.8V at IC802 #2 pin or L815

N

Replace one of IC802/IC805/L815 & Recheck

N

N

Replace one of IC804/Q809/L811/L817/L821 & Recheck

N


Y Check X903 Clock 54MHz

N

Replace X903

Y Check signal transition at IC101 #9 pin

N

Maybe BCM3556 has troubles

Y

Replace IC101 Flash Memory



2. No OSD Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k Block

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


2. No OSD Trouble Shooting Check 12V Voltage Level at P801 #13 Pin

N

Y Check Power connector

Replace Power board

Y Check 12V Voltage Level at L801

N

Replace one of L801/Q804 & Recheck

N

Replace one of Q802/Q803/Q804/L801 & Recheck

N

Replace one of IC803/L824/L827 & Recheck

N

Replace one of IC802/IC805/L815 & Recheck

N

Replace IC807 & Recheck

N

Maybe BCM3556(IC100) or 7329A(IC901) has troubles

Y Check 12V Voltage Level at L909


Y Check Voltage Level 1.8V at IC802 #2 pin or L815 Y Check Voltage Level 1.26V at IC807 #6 pin Y Check P903 #16(TXAC-), #17(TXAC+), #32(TXBC-), #33(TXBC+) Y Check LVDS Cable

N

Replace Cable

Y Check Voltage LCD Module



3. Digital TV Video Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix

TU_SIF SDA0/SCL0_3.3V LVDS RF_Switch, Gain_Switch

FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R

Au di o L /R (for RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


3. Digital TV Video Trouble Shooting

Check RF Cable Y Check Tuner(TU101) Power (5.0V, 2.5V, 3.3V, 1.2V)

N

Replace one of IC101, IC102 at Jack Board or IC803/ IQ812/ C804/ Q809/+5V_ST and +12V of P801 at Main Board& Recheck

Y Check TP Clock, Data, Sync R107, R108, R109

N

Maybe Tuner(TU101) has problems

Y Check cable between P203 at Jack Board and P701 at Main Baord

N

Maybe Cable Pin has problems

Y Maybe BCM3556(IC100) has problems



4. Analog TV Video Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Block

AV1 AV2

DDR2(256Mbit)

TU_CVBS_IN

(FHD, 120Hz)

SIDE_CVBS, SIDE_L/R, SIDE_DET X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R

Audio L/R (for RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


4. Analog TV Video Trouble Shooting

Check RF Cable Y Check Tuner(TU101) Power (5.0V, 2.5V, 3.3V, 1.2V)

N

Replace one of IC101, IC102 at Jack Board or IC803/ Q812/ IC804/ IC809/Q809/+5V_ST and +12V of P801 at Main Board& Recheck

Y Check CVBS Signal TU101 #7 Pin and R118

N



N


Y Check CVBS Signal R703 and C110 at Main Baord

N

Replace one of R703 and C110 & Recheck




5. Component Video Trouble Shooting Overall Block Diagram for Brazil DTV (LH70) ) (


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


5. Component Video Trouble Shooting Check Signal Format Is it supported signal? Y Check Component Cable

Y Check Component Jack JK209 at Jack Board

N

Replace Jack at Jack board

Y Check Component Signal R292, R293, R294 R295, R296, R297 at Jack Board

N

Replace one of R292, R293, R294, R295, R296, R297 L212, L213, L214, L215, L216, L217 & Recheck


N


Y Check Component Signal C130, C131, C132 C133, C134. C135

N

Replace it




6. RGB Video Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R

Au di o L /R (fo r RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

Reset Switch


RX/TX

MAX3232



+5V

DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


6. RGB Video Trouble Shooting Check Signal Format Is it supported signal? Y Check RGB Cable

Y Check RGB Jack JK208 at Jack Board

N

Replace JK208 at Jack board

Y Check RGB Signal L207, L208, L209 at Jack Board

N

Replace one of L207, L208, L209 at Jack Board & Recheck

Y Check cable between P203 at Jack Board and P701 at Main Board

N


Y Check RGB Signal C127, C128, C129 at Main Board

N

Replace it




7. AV Video Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc Blockk

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R

Audi o L /R (for RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

Reset Switch


RX/TX

MAX3232



+5V

DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


7. AV Video Trouble Shooting Check Signal Format Is it supported signal? Y Check AV Cable

Y Check AV Jack JK209 at Jack Board

N

Replace JK209 at Jack board

Y Check AV Signal R203, R204, R214, R215 at Jack Board

N

Replace one of R203, R204, R214, R215 at Jack Board & Recheck

Y Check cable between P203 at Jack Board and P701 at Main Board

N


Y Check AV Signal C124, C125 at Main Board

N

Replace it




8. HDMI Video Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R

Au di o L /R (fo r RGB) JACK BACK at REAR

LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

Reset Switch


RX/TX

MAX3232



+5V

DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


8. HDMI Video Trouble Shooting Check Signal Format Is it supported signal? Y Check HDMI Cable

Y Check HDMI Jack JK600, JK601, JK602

N

Replace Jack

Y Check IC601 Voltage Level +1.8V_HDMI, +5.0V_HDMI

N

Replace one of L601/L602/R619/R615

Y Check I2C Signal R624/R625/R157/R158

N

Replace It & Recheck




9. All Source Audio Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


9. All Source Audio Trouble Shooting

Make sure you can’t hear any audio Y Check Speaker

N

Replace Speaker

Y Check Connector P501

N

Replace Connector

Y Check Signal L504, L505

N

Replace one of L508/L509/L510/L507/L504/L505 & Recheck

N

N

Replace one of L511L503/L501 and IC503 & Recheck

N

Y Check IC501 Power 24V, 3.3V, 1.8V L511, L503, L501

Maybe NTP3100 has problems. Replace It

Y Check BCM3556 I2S Output R505, R506, R507

N

N

Replace It & Recheck



N


10. Digital TV Audio Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k Block

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


10. Digital TV Audio Trouble Shooting

Check video output

N

Follow procedure digital TV video trouble shooting

N

Maybe BCM3556 internal audio DSP has problems. Replace It

Y Follow procedure All source audio trouble shooting



11. Analog TV Audio Troub le Shoot ing Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


11. Analog TV Audio Trouble Shooting

Check video output

N

Y Check Tuner(TU101) Power (5.0V, 2.5V, 3.3V, 1.2V)

N

Follow procedure analog TV video trouble shooting Replace one of IC101, IC102 at Jack Board or IC803/ Q812/ IC804/ IC809/Q809/+5V_ST and +12V of P801 at Main Board& Recheck

Y Check SIF Signal TU101 #6 Pin and R118 at Jack Board

N


Y Check SIF Signal IC501 #4 Pin

N

Replace one of L505/L514/C502/C511/Q500/Q502 IC501 & Recheck

N

Replace one of C123, R120, R121, R124, L109, Q101, C128 & Recheck

Y Check SIF Signal C128 at Jack Board Y Check cable between P203 at Jack Board and P701 at Main Baord

N


Y Check SIF Signal R704 and C106 at Main Board

N

Replace one of R704/R128/C106 & Recheck

N

Maybe BCM3556 audio block has problems. Replace It




12. Component / RGB / AV Audio Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

Reset Switch


RX/TX

MAX3232



+5V

DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


12. Component / RGB / AV Audio Trouble Shooting

Check Video Output

N

Follow procedure external input video trouble shooting

Y Check Jack JK208/JK209

N

Replace Jack

Y Check Signal R235, R236 (Comp1) R216, R217 (Comp2) R249, R250 (RGB) R219, R221 (AV1) R218, R220 (AV2) at Jack Board

N

Replace one of R235/R236/C231/C232 (Comp1) R216/R217/C207/C208 (Comp2) R219/R221/C210/C212 (AV1) R218/R220/C209/C211 (AV2) R249/R250/C246/C247 (RGB) & Recheck at Jack Board


N

Y Check Signal C206, C210, C211, C232, C220, C221, C224, C225, C226, C227 at Main Board

N


Replace one of R215/R228/C211/C232 (Comp1) R229/R230/C220/C221 (Comp2) R204/R214/C206/C210 (AV1) R231/R232/C224/C225 (AV2) R233/R234/C226/C227 (RGB) & Recheck at Main Board


N

Maybe BCM3556 audio block has problems. Replace It



13. HDMI Audio Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


13. HDMI Audio Trouble Shooting N Check video output

Follow procedure HDMI video trouble shooting

Y Re-download EDID data

N

Replace IC601


N

Maybe BCM3556 audio block has problems. Replace it



14. USB Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


14. USB Trouble Shooting

Check USB 2.0 Cable Y Check USB device If devuce is 2.5 inch HDD, Check power adaptor Y Check P704

N

Replace Jack

Y Check 5V voltage level at L703

N

Replace one of IC701/L703/IC806/Q810/L819 & Recheck

Y Maybe BCM3556(IC100) has problems. Replace It.

• Exception - USB power could be disabled by inrushing current - In this case, remove the device and try to reboot the TV (AC power off/on)



14. Bluetooth Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


14. USB Trouble Shooting

Check Bluetooth Module

N

Replace Bluetooth

Y Check Cable between Bluetooth and Main Board

N

Replace cable

Y Check P705

N

Replace Jack

Y Check Signal R3022, R3023

N

Replace one of R3022, R3023 & Recheck

Y Maybe BCM3556(IC100) has problems. Replace It.



15. Digital TV Recording Fail Trouble Shooting Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


15. Digital TV Recording Fail Trouble Shooting N Check video/audio output

Follow procedure digital TV video/audio trouble shooting

Y Check USB

N

Follow procedure USB trouble shooting



18. Digital TV Video Trouble Shooting while recording (Watch & Record) Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

RX/TX

MAX3232



+5V

Reset Switch


DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


18. Digital TV Video Trouble Shooting while recording (Watch & Record)

Check RF Cable Y N Check video/audio output

Follow procedure digital TV video/audio trouble shooting

Y Check USB

N

Follow procedure USB trouble shooting

N

Follow procedure OSD trouble shooting

Y Check Watch

Y Check HDD (User)

N


Replace Jack


19. Digital TV Audio Trouble Shooting while recording (Watch & Record) Overall Block Diagram for Brazil DTV (LH70)


DDR2(256Mbit)

TU_CVBS_IN

Qimonda/Hynix


FRC IC (MST7323S)

CVBS, L/R, AV_DET

FRC FRC Bloc k

AV1

(FHD, 120Hz)


AV2

X-tal 12MHz

Y Pb Pr, L/R, DET

Component 1

Y Pb Pr, L/R, DET

Component 2


RGB/H/V

DDR2 (1Gbit)

D-sub RGB

Elpida/Hynix


Audio L/R


LCD Module

BCM3556

HDMI 1

(Brazil)

3x1 HDMI Switch

HDMI 2 HDMI 3


Data[16:31]



RS-232C (Ctrl./SVC)

RX/TX

Reset Switch


RX/TX

MAX3232



+5V

DP1/DM1

USB_DM1

DP2/DM2

USB_DP1 USB_DM2

O.C. Protector

+5V

Reset IC

X-tal

USB_DP2

I2S

SCL, SDA_3.3V

SCL, SDA_3.3V

54MHz

CLK,TDI,TDO,MS,RST



X-tal 24MHz


47sl80yd-Sa Chassis Lj91t

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