SERVICE MANUAL LS07 chassis LCD TV SERVICE MANUAL LS07 CHASSIS Please read this manual carefully before operation 1
SERVICE MANUAL LS07 chassis CONTENTS Chapter One Specification , feature and the Constitution ……….………………………………………………….2 Chapter Two Function introduction about the main integrated circuit ……………….……….…….…….….…..5 Chapter Three Signal Processing Flow chart ….……………....15 Chapter Four Typical troubleshooting flowchart and example…21 Chapter Five Sspare part lists and easy damage part list…….25 Chapter Six The Parameter adjustment of factory repairment mode…………………………………………………….
SERVICE MANUAL LS07 chassis Chapter One Specification , feature and the Constitution One The Technical Specification of F Series LCD TV: The F series LCD TV which adopts LS07 chassis include 5 types of Product: 1 CHD-TM150F7: Max display format:1024*768(XGA), Audio power output:2*2.0W, voltage:DC12V, Power adapter voltage :AC 110 240W,50/60HZ,power adapter Model number:CHA-1204. 2 CHD-TD170F7 Max display format:1280*768(WXGA), Audio power output:2*2.
SERVICE MANUAL LS07 chassis 50/60HZ 1080P 50/60HZ 5 VGA input As the Terminal display Equipments of computer, it can connect with computer conveniently. it can connect with Computer audio card by its own Audio connection line ,so you can listen the audio information from computer. 6 Program lock and child lock function The function of program lock can lock the programs input password and Modification, the function of child lock can lock the keys.
SERVICE MANUAL LS07 chassis Brightness edge correct: increase the steep of Brightness signal edge, make the edge of picture is more clearly. 18.Five degree Intelligence “The gold ratio” in many kinds of the Combination from Brightness contrast color defintion Sound area, it can calculate the golden Audio-Video Combination effect. 19.Super fine and inner fairness LCD 20.digital comb filter 21.Headphones input 22.
SERVICE MANUAL LS07 chassis The Constitute of the PCB is easier than LP03 chassis, all the Signal Processing are in Main board. 1 Main board Module Main board Module is the main part of Signal Processing in LCD TV. The input signal is Converted into uniform digital signal which can be Identified by LCM by system control circuit.
SERVICE MANUAL LS07 chassis 7 U19 NTMS10P02 MOS switch 8 U23 LM2596-5.0 Liner voltage IC 9 U1 24LC21A EEPROM(save display parameter information) 10 U4 24LC32A EEPROM save user control information 11 U6 U20 PI5V330A Video switch Two The function introduction of main IC 1. MST518 high integration chip MST518 is a high performance high integration image processor which is designed for LCD, it can support SXGA format(1280*1024).
SERVICE MANUAL LS07 chassis 40 HSYNC1 Analog Horizontal sync signal input channel 1 41 VSYNC1 Analog vertical sync signal input channel 1 78 RMID Scaler internal reference. voltage 79 REFP internal ADC decouple 80 REFM internal ADC decouple 75 RIN0 Analog red signal input channel 0 74 RIN0M Analog red signal input channel 0 re.
SERVICE MANUAL LS07 chassis 4,3,154,153,150-147 BB[7:0] TTL blue signal channel 87 GOUT1/PWM1 PWM output 1 86 GOUT0/PWM0 PWM output 0 2 BYPASS Outside connect filter capacitor 29 DDC_DAT Analog interface DDC data 30 DDC_CLK Analog interface DDC clock 31 DDCROM_CLK DDC ROM clock 32 DDCROM_DAT DDC ROM data 34 XIN Crystal oscillator signal input 35 XOUT Crystal oscillator signal output 48, 54, 58, 77 AVDD A/D convert power supply 56 AVDD_PLL PLL power supply 36 AVDD_MPLL
SERVICE MANUAL LS07 chassis Picture quality enhancement of dynamic peak value control skin color correct Gamma correct Black level extension,etc Can turn down horizon and vertical scan part output H/V sync. signal to Scaler 128K Flash Memory inside, support program on line Automatic Y/C signal identify TDA15063H pin function: pin Pin name Pin function 1 VSSP2 Grounding 2 VSSC4 Grounding 3 VDDC4 +1.8V 4 VDDA3 +3.3V 5 VREF_POS_LSL +3.3V 6 VREF_NEG_LSL+HPL 0V 7 VREF_POS_LSR+HPR +3.
SERVICE MANUAL LS07 chassis 35 AUDIOIN5R Av right track signal input 36 AUDOUTSL SCART/CINCH left track output 37 AUDOUTSR SCART/CINCH right track output 38 DECSDEM Track demodulator decouple 39 QSSO Deemphasis capacitor 40 GND2 grounding 41 PLLIF IF_PLL filter 42 SIFAGC Sound intermediate frequency auto gain control 43 IFVO IF demodulation video output 44 FMRO Fm broadcast output 45 VCC8V The supply voltage of Sound switch 46 AGC2SIF The second sound intermediate frequen
SERVICE MANUAL LS07 chassis 76 VOUT V signal output 77 INSSW3 RGB/YpbPr insert identify signal input 78 R/PrIN3 R/Pr signal input 79 G/YIN3 G/Y signal input 80 B/PbIN3 B/Pb signal input 81 GND3 grounding 82 VP3 +5V 83 BCLIN beam current limiter input 84 BLKIN Black current input 85 RO R basic color signal input 86 GO G basic color signal output 87 BO B basic color signal output 88 VDD3 +3.3V 89 VREFAD_NEG 0V 90 VREFAD_POS +3.3V 91 VREFAD Audio ADC re.
SERVICE MANUAL LS07 chassis 119 P32/ADC2 DVD key-press signal input 120 P33/ADC3 TV key-press signal input 121 VSSC grounding 122 P24/PWM3 Background control signal output 123 P25/PWM4 SAW filter control signal 124 VDDC3 +1.8V 125 VSSC3 grounding 126 P12/INT2 MST interrupt signal input 127 P14/RX MST data line 128 P15/TX MST clock line TDA15063H inside block diagram 2 TDA9178 introduction TDA9178 is a analog signal processor with standard YUV input and output interface .
SERVICE MANUAL LS07 chassis Self-suitable black level extend control Skin color correction, green intensity ,blue extend Noise measurement and reduced noise process founction Line Width Control (LWC) TDA9178 PIN DESCRIPTION: Pin Pin name Function 1 sandcastle input sandcastle input 2 not connected Grounding 3 ADC input 1 A/D convertor input 1 4 ADC input 2 A/D convertor input 2 5 ADC input 3 A/D convertor input 3 6 luminance input Y input 7 address selection input I2C address choose
SERVICE MANUAL LS07 chassis 3 TDA1517AWT brief: The TDA1517ATW is an double channel class-AB power amplifier contained in a plastic heat sink thin shrink small outline package (HTSSOP20). The device is primarily developed for multimedia applications.
SERVICE MANUAL LS07 chassis 1 2 4 6 7 10 11 14 19 20 GND ground TDA1517 inside block diagram: Chapter three Signal Processing Flowchart 16
SERVICE MANUAL LS07 chassis This chapter mainly introduces analog signals process video intensify process TV system control process TV supply system of the Europe LCD TV. One Analog signals process 1. IF/RF process Completed by TAF-C21P1 RF tuner, output IF signal.
SERVICE MANUAL LS07 chassis Three TV power supply system: 1. The supply power system of the main IC is below: 12V:the unit main power supply +34V:RF tuner tune voltage VCC5: stable and constant +5V power supply VCC5A: +5V power supply software can turn off V3_3D:UOC digital part supply power supply V1_8V1:UOC digital part constant supply power supply V1_8V2:UOC digital part power supply can be turned off V2_5M:MST518 digital core supply power supply V3_3M:MST518 supply power supply 2.
SERVICE MANUAL LS07 chassis 4.
SERVICE MANUAL LS07 chassis Socket definition number name Connect object Function description 1 JP1 Connect socket +12V, +12V, GNG, GND(use when inside power supply plank JP2 not use ) 2 JP2 Connect adapter +12V, GND, GND use when outside connect adapter JP1not use 3 J8 Connect outside VGA audio input 4 J1 Connect outside VGA input 5 J3 Connect outside HD-YpbPr input 6 J4 Connect outside HD audio input 7 J2 Connect outside S-video signal input 8 J20 Connect outside AV input 9
SERVICE MANUAL LS07 chassis No. A B C D E F G H I J K L M N O name element Function description A1 RF tuner TAF5-C21P1RW RF input, IF output U2 U3 U20 U6 U11 U9 U23 U19 U21 U8 U4 Q9 U12 U1 UOC(TDA15063H) Video decode and MCU control MST518 AD converter and format transition PI5V330A PI5V330A Video switch on/off Video switch on/off IRF7316 MOS switch LM2596-5.0 Linear voltage IC LM2596-5.
SERVICE MANUAL LS07 chassis No answer,no key press,no remote control NO YES Is outside adapter(or inside) output 12V normal? The connection of Main board and key press ,remote plane is reliable or not? Mend or change adapter YES NO Reset the connect lines Is U13Ў ў U22 output port voltage normal? NO YES Check each supply power pins voltage of U13Ў ў U22 output to U2 are reliable or not? Check U13Ў ў U22 Outside circuit YES One pin has no voltage 1Ў ў check outside parts of an apparatus of suppl
SERVICE MANUAL LS07 chassis 3 White screen: the reason of the troubleshoot is the signal electrode electrode haven’t working voltage. The TFT is always in transparent condition, so the whole screen is in white raster.
SERVICE MANUAL LS07 chassis 2 The example of service Example 1 Can’t turn on the TV Troubleshoot phenomenon: after connect power supply and turn on the power supply ,the “changhong “logo will not appear on screen. Press the key or use the remote control, the TV has no reflect, no display and black screen. The process of maintenance : remove the plug of adapter output, measure adapter output voltage is +12V,the adapter works normally.
SERVICE MANUAL LS07 chassis resistance R23 become large. So the pixel clock inside of the MST518 can not vibrate, result in the A/D converter of MST518 internal can not work normally . so appear no picture in VGA mode and “signal beyond boundary” on TFT screen.
SERVICE MANUAL LS07 chassis panel groupware Key-press panel groupware DVD touch film key-press Earphone panel groupware Commutator groupware DVD output panel groupware JUJ6.694.015 JUJ6.618.004 8669400150J 8661800040J JUJ6.695.002 8669500020J JUJ6.691.007 8669100070J JUJ6.693.
SERVICE MANUAL LS07 chassis DVD touch film key-press Earphone panel groupware Commutator groupware DVD output panel groupware TFT TFT JUJ6.618.003 8661800030J JUJ6.695.002 8669500020J JUJ6.691.008 8669100080J JUJ6.693.
SERVICE MANUAL LS07 chassis use Dynamoelectric speaker Remote control Inside power supply module CHD-TM201F7: Material name Face frame Back cover base Accessories bag Mainboard groupware Mainboard groupware Remote control panel groupware Key-press panel groupware Earphone panel groupware TFT TFT Y2898-01-5W-4Ω KLC5B 56231105042 8201803760L FSP084-1CD02C 67128084025 type module NO. JUJ8.074.030 JUJ8.074.033-2 JUJ8.070.012 JUJ6.479.
SERVICE MANUAL LS07 chassis Mainboard groupware Remote control panel groupware Key-press panel groupware Earphone panel groupware TFT inverter dynamoelectric speaker Remote control Adapter JUJ6.690.032-2 8669000322J JUJ6.694.016 8669400160J JUJ6.694.017 8669400170J JUJ6.695.
SERVICE MANUAL LS07 chassis CHD-TD170F7: Material name Face frame Suspend screen Back cover base Accessories bag Mainboard groupware Mainboard groupware DVD drive Decode panel groupware Remote control panel groupware Key-press panel groupware DVD touch film key-press Earphone panel groupware Commutator groupware DVD output panel groupware type module NO. JUJ8.074.036 JUJ8.640.017 JUJ8.074.037 JUJ8.070.012 JUJ6.479.049 JUJ6.690.
SERVICE MANUAL LS07 chassis Suspend screen Back cover base Accessories bag Mainboard groupware Mainboard groupware DVD drive Decode panel groupware Remote control panel groupware Key-press panel groupware DVD touch film key-press Earphone panel groupware Commutator groupware DVD output panel groupware TFT TFT JUJ8.640.018 JUJ8.074.033-1 JUJ8.070.012 JUJ6.479.040 JUJ6.693.
SERVICE MANUAL LS07 chassis Mainboard groupware Remote control panel groupware Key-press panel groupware Earphone panel groupware 0.2% JUJ6.690.032-10 86690003210J 0.1% JUJ6.694.016 8669400160J 0.1% JUJ6.694.015 8669400150J 0.1% JUJ6.695.002 8669500020J 0.05% TFT TFT LTM170W1-L01 LC171W03 68219601701 68211710305 inverter INV17-4505 59324125010 0.05% 0.3% 0.
SERVICE MANUAL LS07 chassis Dynamoelectric speaker Remote control Inside power supply module 0.05% Y38106-01-5W-4Ω KLC5B 56231105043 8201803760L FSP084-1CD02C 67128084025 type module NO. JUJ8.074.038 JUJ8.074.039 JUJ8.070.015 JUJ6.479.046 Material code 8807400380J 8807400390J 8807000150J 8647900460J JUJ6.690.032-2 8669000322J 0.05% 0.
