Customer & Product Assurance Presented by: Roman Jemielity

Customer & Product Assurance Presented by: Roman Jemielity
LCD Television Service Seminar Circuit Explanation for LX70/LX700 Welcome to Panasonic e-learning seminar session on LCD Flat Panel technology. The main objectives of this course are: Update on new 2006 design Main differences between 2005 and 2006 design Chassis structure and panels description Adjustment methods Troubleshooting hints Panasonic Canada Inc. Customer & Product Assurance Presented by: Roman Jemielity

2007 LCD Line-up 2006 2007 High End Model Step Up Model
TC-32LX600 High End Model TC-32LX700 TC-26LX600 TC-32LX70 TC-32LX60C TC-26LX70 TC-26LX60C Step Up Model TC-23LX60C TC-32LE60 TC-32LE70 Derivative Model TC-26LE60 TC-26LE70

Advanced Smart Sound Speaker (Side)
2007 LCD Features LX700 Series LX70 Series LE70 Series Size 32 32/26 Panel IPS α IPS Motion Picture Pro Y - Intelligent Scene Controller Advanced 3D Colour Management Sub-Pixel Controller Speaker Advanced Smart Sound Speaker (Side) Bottom Speaker Cone Material Bamboo fiber BBE VIVA HDMI 2 EZ Sync (HDAVI Control 2) SDHC Card Slot Y (JPEG*) Gallery Player The panel of LX700 series is IPS alpha and that of LX70 series is IPS. Only 700 series are applying to SD card for JPEG files. Only 700 series can use SDHC and view the JPEG files.

Motion Picture Pro : 50% Reduction in Afterimages (Holding Time)
Conventional LCD TV New interpolation frames are created based on two adjacent frames and inserted between them. Frame Creation Frame Creation 60 Frames/s 120 frames/ sec Interpolation images created between frames based on motion vector detection technology CONVENTIONAL MOTION PICTURE PRO New interpolation frames are created based on current two adjacent frames and inserted between them. Therefore, frames are increased from 60 to 120 in a second. So, afterimages are reduced by this function. 120 frames/sec 60 frames/sec Approx. 8.3 msec (holding time) Approx. 17 msec (holding time) Motion Picture Pro : 50% Reduction in Afterimages (Holding Time)

PCB LAYOUT-TC32LX700 TC-32/26LX600 TC-32LX700 AP P A DT GS G V
Differences from LX600: 　　 GS board for SD card slot is added. TC-32LX700 AP P A SP DT V (HDMI) KEY Control G GS TC-32/26LX600

PCB LAYOUT-TC32/26LX70 TC-32/26LX60 TC-32/26LX70 AP A P DT G SP V
(HDMI) KEY Control TC-32/26LX70 G The board structure is almost same as 2006 design

PCB FUNCTIONS Board Function 32LX700 32/26LX70 A
MAIN (Rear Terminal, AV Switch, MCU, Audio & Video Processor, LVDS) Yes Yes P Power (AC/DC) Yes Yes DC-DC Converter Yes Yes AP DT Digital Tuner Yes Yes Yes G AV3 Terminal, Headphone jack Yes GS SD-Card slot Yes － V LED, Remote Receiver Yes Yes Control Panel Ass’y Control Button Yes Yes

PCB LAYOUT-TC32/26LX70 LX600 LX700 LX60 LX70
VCTP HDMI (CEC) FPGA A ATSC DT AUDIO SWITCH LX700 LX70 Peaks Lite2 HQ1L(*) VIDEO LVDS TX(*) * 32LX700 only Peaks Lite There are 2 differences from LX600/60. The first is that Peaks Lite2 and Video switch are introduced instead of VCTP, FPGA and Peaks Lite. The second is that for LX700, HQ1L and LVDS TX are introduced for Motion Picture Pro. HQ1L and LVDS TX are used to increase the frames twice to reduce the afterimages. Differences from LX600/60: 1. Peaks Lite2 and VIDEO SW are introduced instead of VCTP, FPGA and Peaks Lite . 2. For LX700, HQ1L and LVDS TX are introduced.

VIDEO SIGNAL FLOW A Analog Digital DT TUNER FRONT END AV1 GS AV2
HDMI1 HDMI I/F IC4510 PROCESS HDMI2 ＳＷ A/D DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END IC8001 Peaks Lite2 AV1 GS AV2 Digital signal is shown in blue line and analog signal is shown in black line. 1. Analog video signals from Tuner, AV1, AV2, Component and AV3 go into Video Switch. 2. Video Switch selects video signal. 3. And video signal goes to AD converter and analog signal becomes digital signal. 4. The digital signal goes into Peaks Lite2. 1. Digital video signals from Tuner go into Peaks Lite2. 2. Digital video signals from HDMI terminal also go into Peaks Lite2 through HDMI I/F. Peaks Lite2 carries out video processing of those signals and outputs LVDS signal to LCD panel. For LX700, to increase the frames twice, LVDS signal goes to LCD panel through “HQ1L” and “LVDS TX”. ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ IC1100 OSD STB MCU Monitor Out VIDEO PROCESS G AV3 DTV LX700 Only

VIDEO SIGNAL FLOW - TUNER
Analog Digital HDMI1 HDMI I/F IC4510 PROCESS HDMI2 ＳＷ A/D DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END IC8001 Peaks Lite2 AV1 GS AV2 This chart shows the video signal flow from tuner. The signals are analog and digital. Analog signal flow: 1.Analog video signal from Tuner goes into video switch. 2.Video switch selects video signal. 3.Video signal goes into AD converter and switch of IC4510. 4.Video signal goes into Peaks Lite2. 5.Peaks Lites2 carries out video processing like scaling, IP conversion and picture correction, makes and mixes OSD, converts video signal into LVDS signal, and outputs LVDS signal to LCD panel. 6.For LX700, after Peaks Lite2, the signal goes through HQ1L and LVDS TX. 7.As another flow, video signal via video switch goes to Monitor OUT. Digital signal flow. 1.Digital video signal from Tuner goes into Front End. 2.Front End demodulates the signal. 3. The demodulated signal goes into Peaks Lite2. 4.Peaks Lite2 carries out video processing, makes and mixes OSD and outputs LVDS signal to LCD panel. 5. As another flow, the signal via Peaks Lite2 goes to Monitor OUT through Video Switch, ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ IC1100 OSD STB MCU Monitor Out VIDEO PROCESS G AV3 DTV LX700 Only

VIDEO SIGNAL FLOW - HDMI
Analog Digital HDMI1 HDMI I/F IC4510 PROCESS HDMI2 ＳＷ A/D DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END IC8001 Peaks Lite2 AV1 GS AV2 This chart shows the video signal flow from HDMI 1 and HDMI 2. The signals are digital. 1.Digital video signal goes into HDMI Interface. 2.HDMI1 or HDMI2 Signal is selected and decoded. 3.And next, the signal is selected from other video signals by switch. 3.The signal goes into Peaks Lite2. 4.Peaks Lite2 carries out video processing and outputs LVDS signal to LCD panel. For LX700, the signal goes through HQ1L and LVDS TX. ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ IC1100 OSD STB MCU Monitor Out VIDEO PROCESS G AV3 DTV LX700 Only

VIDEO SIGNAL FLOW - AV A Analog Digital DT TUNER FRONT END AV1 GS AV2
HDMI1 HDMI I/F IC4510 PROCESS HDMI2 ＳＷ A/D DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END IC8001 Peaks Lite2 AV1 GS AV2 This chart shows the video signal flow of AV1. The signal is analog. 1.The signal from AV1 terminal goes into video switch. 2.Video switch selects video signal and outputs it to “AD converter” of IC4510. 3.The signal goes to Switch of IC4510 and Peaks Lite2. 4.Peaks Lites2 carries out video processing, makes and mixes OSD, converts video signal into LVDS signal. 5.And Peaks Lite2 outputs LVDS signal to LCD panel. 6. As another flow, the video signal goes to “Monitor Out”. For LX700, the signal goes through HQ1L and LVDS TX. The signal from AV2 and AV3 is same as AV1. ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ IC1100 OSD STB MCU Monitor Out VIDEO PROCESS G AV3 DTV LX700 Only

AUDIO SIGNAL FLOW Analog Digital A DT TUNER FRONT END AV1 AV2
IC4510 IC2301 HDMI1 IC2106 AUDIO AMP DIGITAL Audio DSP PROCESS HDMI2 HDMI I/F DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 This is the block diagram of audio signal flow. Digital signal flow is shown in blue line and analog flow is shown in black line. 1. Analog signal from Tuner, AV1, AV2 and AV3 goes into Audio Switch. 2. Audio Switch selects audio signal and outputs L/R signal to Audio DSP. 3. Audio DSP carries out audio processing of volume, equalizing and outputs PWM signal. 4. Next, audio signal goes to speakers through Audio Amp. On the other hand, digital signal from HDMI terminals goes into Audio DSP. And signal goes to speakers through Audio Amp. Peaks Lite2 L/R COMPONENT AUDIO PROCESS IC1100 L/R STB MCU Monitor Out L/R DTV G AV3 LX700 Only HEADPHONE HP AMP

AUDIO SIGNAL FLOW - TUNER
Analog Digital A IC4510 IC2301 HDMI1 IC2106 AUDIO AMP DIGITAL Audio DSP PROCESS HDMI2 HDMI I/F DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 This chart shows the audio signal flow from tuner. There are analog and digital signals. Analog signal. Tuner outputs analog signal to audio switch IC3101. The signal goes to Audio Amp IC2301 through Audio DSP IC2106 and finally to speaker. For LX700 series, there are two Audio Amp, IC2301 and IC2302 and four speakers. The signal after Audio DSP goes to Headphone terminal through Headphone Amp. On the other hand, the audio signal from Audio Switch also goes to Monitor out. Digital signal. Tuner outputs Digital signal to Front End, IC8302 to demodulate. And it goes into Peaks Lite2 and digital signal is processed of volume, equalizing and so on. The signal goes to Audio Amp through Audio DSP and finally to speakers. On the other hand, the audio signal from Audio switch also goes to Monitor out. Peaks Lite2 L/R COMPONENT AUDIO PROCESS IC1100 L/R STB MCU Monitor Out L/R DTV G AV3 LX700 Only HEADPHONE HP AMP

AUDIO SIGNAL FLOW - HDMI
Analog Digital A IC4510 IC2301 HDMI1 IC2106 AUDIO AMP HDMI I/F Audio DSP HDMI2 DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 This chart shows the audio signal flow of HDMI. Audio signal from HDMI is decoded by HDMI Interface,IC4510 and output to Audio dsp. Then, Audio DSP outputs L/R signals to speakers through Amplifier IC, IC2301, IC2302. On the other hand, after Audio Switch, the signal goes Monitor Out and the signal after Audio DSP goes to Headphone through Headphone amp. Peaks Lite2 L/R COMPONENT AUDIO PROCESS IC1100 L/R STB MCU Monitor Out L/R DTV G AV3 LX700 Only HEADPHONE HP AMP

AUDIO SIGNAL FLOW - AV A DT TUNER FRONT END AV1 AV2 COMPONENT
IC4510 IC2301 HDMI1 IC2106 AUDIO AMP HDMI I/F Audio DSP HDMI2 DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 This chart shows the audio signal flow of AV1 in LX700/LX70. The analog audio signal from AV1 terminal goes in audio switch. Audio switch selects audio signal and outputs it to AD converter. And the signal goes to Audio DSP and goes to speakers through Audio Amp. On the other hand, after Audio Switch, the signal goes Monitor Out and the signal after Audio DSP goes to Headphone through Headphone amp. The signal from AV2 and AV3 is same as AV1. Peaks Lite2 L/R COMPONENT AUDIO PROCESS IC1100 L/R STB MCU Monitor Out L/R DTV G AV3 LX700 Only HEADPHONE HP AMP

TROUBLESHOOTING

: Line where problem might occur
PICTURE NG and AUDIO OK ALL Input Source Picture NG ? No Only AV Terminal Picture NG A Board No Yes DT Board Analog TV Picture NG AV Terminal Picture OK? A Board Yes : Line where problem might occur Only Digital TV Picture NG DT Board A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital HDMI2 ＳＷ A/D Only HDMI Input Picture NG A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END At first, we check whether all input picture sources are NG or not. When all are NG, we guess LCD panel or Peaks Lite2 on A board is defective as shown in red color in this figure. Therefore, we check “No picture but OSD is displayed ?”. If Yes, this situation means LCD is OK. So, we judge A board is defective. But, if No, LCD or A board is defective. So, at first, we change A board. If the result is not good, next, we change LCD panel. IC8001 Peaks Lite2 AV1 GS AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ No OSD IC1100 No picture but OSD is displayed ? Monitor Out STB MCU LCD Panel or A board VIDEO PROCESS G AV3 Yes DTV LX700 Only A Board

PICTURE NG and AUDIO OK ALL Input Source Picture NG ? No Only AV Terminal Picture NG A Board No Yes DT Board Analog TV Picture NG AV Terminal Picture OK? A Board Yes : Line where problem might occur Only Digital TV Picture NG DT Board A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital HDMI2 ＳＷ A/D Only HDMI Input Picture NG A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END Next case is the picture trouble of specified input source. If only the picture from AV input terminal is NG, we judge A board is probably defective. The reason is because A board has both AV terminal and video processor. So, we change A board. IC8001 Peaks Lite2 AV1 GS AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ No OSD IC1100 No picture but OSD is displayed ? Monitor Out STB MCU LCD Panel or A board VIDEO PROCESS G AV3 Yes DTV LX700 Only A Board

PICTURE NG and AUDIO OK ALL Input Source Picture NG ? No Only AV Terminal Picture NG A Board AV Terminal Picture OK? No Analog TV Picture NG Yes A Board Yes DT Board : Line where problem might occur Only Digital TV Picture NG DT Board A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital HDMI2 ＳＷ A/D Only HDMI Input Picture NG A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END If only analog TV picture is NG, we guess DT board or Peaks-lite2 on A board is defective. Next, we check “The picture from AV Input Terminal normally displayed?” If No, we guess Peaks Lite2 on A board is defective, and we change A board . If Yes, we judge DT board is defective and we change DT board. IC8001 Peaks Lite2 AV1 GS AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ No OSD IC1100 No picture but OSD is displayed ? Monitor Out STB MCU LCD Panel or A board VIDEO PROCESS G AV3 Yes DTV LX700 Only A Board

PICTURE NG and AUDIO OK ALL Input Source Picture NG ? No Only AV Terminal Picture NG A Board No Yes DT Board Analog TV Picture NG AV Terminal Picture OK? A Board Yes : Line where problem might occur Only Digital TV Picture NG DT Board A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital HDMI2 ＳＷ A/D Only HDMI Input Picture NG A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END If only digital TV picture is NG, we judge DT board is probably defective. The reason is because the other digital input picture of such as HDMI input is OK and it means that Peaks Lite2 is OK. So we change DT board. IC8001 Peaks Lite2 AV1 GS AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ No OSD IC1100 No picture but OSD is displayed ? Monitor Out STB MCU LCD Panel or A board VIDEO PROCESS G AV3 Yes DTV LX700 Only A Board

PICTURE NG and AUDIO OK ALL Input Source Picture NG ? No Only AV Terminal Picture NG A Board No Yes DT Board Analog TV Picture NG AV Terminal Picture OK? A Board Yes : Line where problem might occur Only Digital TV Picture NG DT Board A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital HDMI2 ＳＷ A/D Only HDMI Input Picture NG A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS IC8302 FRONT END If only HDMI input picture is NG, we guess HDMI interface is defective. We judge A board is probably defective, because A board has it. So we change A board. IC8001 Peaks Lite2 AV1 GS AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ No OSD IC1100 No picture but OSD is displayed ? Monitor Out STB MCU LCD Panel or A board VIDEO PROCESS G AV3 Yes DTV LX700 Only A Board

PICTURE OK and AUDIO NG ALL Input Source Sound NG ? No Only AV Terminal Sound NG A Board AV Terminal Sound OK? No Analog TV Sound NG Yes A Board Yes DT Board AV Terminal Sound OK? No Digital TV Sound NG A Board : Line where problem might occur Yes DT Board Analog Digital A IC4510 IC2301 HDMI1 HDMI I/F IC2106 Audio DSP AUDIO AMP Only HDMI Input Sound NG A Board HDMI2 DT IC2302 IC3101 AUDIO AMP At first, we check whether all input Sound sources are NG or not. If Yes, we guess Speaker or Audio DSP or Audio amplifier IC on A board is defective. Next we check “Headphone Sound NG?”. If Yes, we guess Audio DSP or Headphone AMP on A board is defective. If No, we judge Audio amplifier IC on A board or speaker is defective. At first, we change the speaker. If speaker is OK, we change A board. TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R No AV2 L/R IC8001 Peaks Lite2 Headphone or Monitor OUT Sound NG ? L/R A Board (Audio AMP) or Speaker COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R Yes DTV G G AV3 LX700 Only HEADPHONE HP AMP A Board

PICTURE OK and AUDIO NG No ALL Input Source Sound NG ? Only AV Terminal Sound NG A Board AV Terminal Sound OK? No Analog TV Sound NG Yes A Board Yes DT Board AV Terminal Sound OK? No Digital TV Sound NG A Board : Line where problem might occur Yes DT Board Analog Digital A IC4510 IC2301 HDMI1 HDMI I/F IC2106 Audio DSP AUDIO AMP Only HDMI Input Sound NG A Board HDMI2 DT IC2302 IC3101 AUDIO AMP Next case is the sound trouble of specified input source. If only AV input terminal sound is NG, we guess AV terminal or AUDIO SW IC is defective. So, we judge A board is defective, because A board has both of them. TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 Peaks Lite2 No L/R Headphone Sound NG ? A Board (Audio AMP) or Speaker COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R Yes DTV G G AV3 LX700 Only HEADPHONE HP AMP A Board

PICTURE OK and AUDIO NG ALL Input Source Sound NG ? No Only AV Terminal Sound NG A Board AV Terminal Sound OK? No Analog TV Sound NG Yes A Board Yes DT Board AV Terminal Sound OK? No Digital TV Sound NG A Board : Line where problem might occur Yes DT Board Analog Digital A IC4510 IC2106 IC2301 HDMI1 HDMI I/F Audio DSP AUDIO AMP Only HDMI Input Sound NG A Board HDMI2 DT IC2302 IC3101 AUDIO AMP If analog TV sound is NG, we guess DT board or Audio DSP on A board is defective. Next, we check the sound from AV input terminal. If AV input terminal sound is NG too, we judge A board is probably defective, because we guess Audio SW or AUDIO DSP is defective. We change A board. If AV input terminal sound is OK, we judge DT board is defective and we change DT board. TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 Peaks Lite2 No L/R Headphone Sound NG ? A Board (Audio AMP) or Speaker COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R Yes DTV G G AV3 LX700 Only HEADPHONE HP AMP A Board

PICTURE OK and AUDIO NG ALL Input Source Sound NG ? No Only AV Terminal Sound NG A Board AV Terminal Sound OK? No Analog TV Sound NG Yes A Board Yes DT Board AV Terminal Sound OK? No Digital TV Sound NG A Board : Line where problem might occur Yes DT Board Analog Digital A IC4510 IC2301 HDMI1 HDMI I/F IC2106 Audio DSP AUDIO AMP Only HDMI Input Sound NG A Board HDMI2 DT IC2302 IC3101 AUDIO AMP If digital TV sound is NG, we guess DT board or Peaks Lite2 or Audio DSP is defective. Next, we judge the sound from AV input terminal. If AV input terminal sound is NG too, we judge A board is probably defective, because we guess AUDIO switch or Audio DSP is abnormal. So we change A board. If AV input terminal sound is OK, we judge DT board is defective. So we change DT board. TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 Peaks Lite2 No L/R Headphone Sound NG ? A Board (Audio AMP) or Speaker COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R Yes DTV G G AV3 LX700 Only HEADPHONE HP AMP A Board

PICTURE OK and AUDIO NG ALL Input Source Sound NG ? No Only AV Terminal Sound NG A Board AV Terminal Sound OK? No Analog TV Sound NG Yes A Board Yes DT Board AV Terminal Sound OK? No Digital TV Sound NG A Board : Line where problem might occur Yes DT Board Analog Digital A IC4510 IC2301 HDMI1 HDMI I/F IC2106 Audio DSP AUDIO AMP Only HDMI Input Sound NG A Board HDMI2 DT IC2302 IC3101 AUDIO AMP If only HDMI input sound is NG, we guess HDMI interface IC is defective. So, we judge A board is probably defective, because A board has HDMI Interface IC. TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END AV1 L/R AV2 L/R IC8001 Peaks Lite2 No L/R Headphone Sound NG ? A Board (Audio AMP) or Speaker COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R Yes DTV G G AV3 LX700 Only HEADPHONE HP AMP A Board

PICTURE NG and AUDIO NG Input Source check : Line where problem might occur A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital HDMI2 ＳＷ Analog TV Picture NG Sound NG AV Terminal Picture & Sound OK? No A/D A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS TU8302 Yes FRONT END DT Board IC8001 AV1 GS AV Terminal Picture NG Sound NG AV2 ＳＣＡＬＩＮＧ/ A Board ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ OSD IC1100 Monitor Out STB MCU VIDEO PROCESS G AV3 HDMI Input Picture NG Sound NG DTV LX700 Only A Board Analog Digital A IC4510 IC2106 IC2301 HDMI1 HDMI I/F Audio DSP AUDIO AMP HDMI2 Digital TV Picture NG Sound NG AV Terminal Picture & Sound OK? At first, we check which of input source is NG. If both picture and sound from analog TV is NG, we guess DT board is defective. Next, we check the picture and sound from AV input terminal. If OK, we guess Audio SW and Video SW on A board is OK. So, we judge DT board is probably defective. We change DT board. If NG, we judge A board is probably defective. So, we change A board. No A Board DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END Yes DT Board AV1 L/R AV2 L/R IC8001 L/R Peaks Lite2 COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R DTV G G AV3 LX700 Only HEADPHONE HP AMP

PICTURE NG and AUDIO NG Input Source check : Line where problem might occur A HDMI1 HDMI I/F PROCESS IC4510 Analog Digital Analog TV Picture NG Sound NG AV Terminal Picture & Sound OK? HDMI2 No ＳＷ A/D A Board DT TU8300 IC3001 IC4200 IC4207 LVDS LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX Yes TU8302 FRONT END DT Board IC8001 AV1 GS AV Terminal Picture NG Sound NG AV2 A Board ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ OSD IC1100 Monitor Out STB MCU VIDEO PROCESS HDMI Input Picture NG Sound NG G AV3 DTV LX700 Only A Board Analog Digital A IC4510 IC2106 IC2301 HDMI1 HDMI I/F Audio DSP AUDIO AMP HDMI2 Digital TV Picture NG Sound NG AV Terminal Picture & Sound OK? If both picture and sound from AV input terminal is NG, we guess A board is defective. The reason is A board has AV terminal, AUDIO DSP and Peaks Lite2. No A Board DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 Yes FRONT END DT Board AV1 L/R AV2 L/R IC8001 Peaks Lite2 L/R COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R DTV G AV3 LX700 Only HEADPHONE HP AMP

PICTURE NG and AUDIO NG Input Source check : Line where problem might occur A HDMI1 PROCESS HDMI I/F IC4510 Analog Digital Analog TV Picture NG Sound NG AV Terminal Picture & Sound OK? No HDMI2 ＳＷ A/D A Board DT TU8300 IC3001 IC4200 IC4207 LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX LVDS Yes TU8302 FRONT END DT Board IC8001 AV Terminal Picture NG Sound NG AV1 GS A Board AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ OSD IC1100 Monitor Out STB MCU VIDEO PROCESS HDMI Input Picture NG Sound NG G AV3 DTV LX700 Only A Board Analog Digital A IC4510 IC2106 IC2301 HDMI1 HDMI I/F Audio DSP AUDIO AMP HDMI2 Digital TV Picture NG Sound NG AV Terminal Picture & Sound OK? If both picture and sound of HDMI input is NG, we guess A board is defective. The reason is A board has both HDMI Interface IC and Peaks Lite2. No A Board DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 Yes FRONT END DT Board AV1 L/R AV2 L/R IC8001 Peaks Lite2 L/R COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R DTV G G AV3 LX700 Only HEADPHONE HP AMP

: Line where problem might occur.
PICTURE NG and AUDIO NG Input Source check : Line where problem might occur. A HDMI1 PROCESS HDMI I/F IC4510 Analog Digital Analog TV Picture NG Sound NG AV Terminal Picture & Sound OK? HDMI2 No ＳＷ A/D A Board DT TU8300 IC3001 IC4200 IC4207 LVDS LCD Panel TUNER VIDEO SWITCH HQ1L LVDS TX Yes TU8302 FRONT END DT Board IC8001 AV Terminal Picture NG Sound NG AV1 GS A Board AV2 ＳＣＡＬＩＮＧ/ ＩＰ　ＣＯＮＶＥＲＴＥＲ/ COMPONENT PICTURE CORRECT/ OSD IC1100 Monitor Out STB MCU VIDEO PROCESS HDMI Input Picture NG Sound NG G AV3 DTV LX700 Only A Board A IC4510 IC2106 IC2301 HDMI1 HDMI I/F Audio DSP AUDIO AMP HDMI2 Digital TV Picture NG Sound NG AV Terminal Picture & Sound OK? If both picture and sound of Digital TV is NG, we guess A board or DT board is defective. Next, we check the picture and sound from AV input terminal. If OK, we guess Audio SW and Video SW on A board are OK. So, we judge DT board is probably defective. We change DT board. If NG, we judge A board is probably defective. We change A board. No A Board DT IC2302 IC3101 AUDIO AMP TU8300 L/R AUDIO SWITCH TUNER IC8302 FRONT END Yes DT Board AV1 L/R AV2 L/R IC8001 L/R Peaks Lite2 COMPONENT AUDIO PROCESS IC1100 L/R STB MCU MONITOR OUT L/R DTV G G AV3 LX700 Only HEADPHONE HP AMP

Customer & Product Assurance Presented by: Roman Jemielity

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