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Summary of Contents for Astar ud55yc5500ua
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Page 1: Service Manual
LCD COLOUR TV SERVICE MANUAL CHASSIS NO.: LS01 Please read this manual carefully before service. -
Page 2: Table Of Contents
Catalog Chapter1 Specifications and Composition ............3 Chapter2 Function Introduction of Main IC ........... 7 Chapter3 Analysis of Signal process Flowchart and key point measure date ....................29 Chapter4 Maintenance Procedure and Examples of Typical troubleshooting ....................39 Chapter5 Spare Part Lists ..................... -
Page 3: Chapter1 Specifications And Composition
Chapter 1: Specifications and Composition 1. Models for LS01 chassis : Region Europe America Other regions LT26GJ01E LT32GJ01E LT26GJ01U LT32GJ01U LT26GJ01A LT32GJ01A LT37GJ01E LT26GJ12E LT37GJ01U LT26GJ12U LT37GJ01A LT26GJ12A Original LT32GJ12E LT37GJ12E LT32GJ12U LT37GJ12U LT32GJ12A LT37GJ12A Models LT26GJ88E LT32GJ88E LT26GJ88U LT32GJ88U LT26GJ88A LT32GJ88A LT37GJ88E LT37GJ88U... - Page 4 1) European market:...
- Page 5 2). American and Asian market:...
- Page 6 4. Introduction of PCB module LCD TV with LS01 is made up of power board, side AV board, remote control reception board, key board, and mainboard. The table below is the introduction of the function of all printed board modules. Parts Description Mainboard module is the core of LCD TV signal processing.
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Page 7: Chapter2 Function Introduction Of Main Ic
Chapter 2: Function Introduction of Main IC 1. Main ICs and functional modules of LS01 chassis Item no. Model Main function JS-6H2/121 Tuner output sound IF and video signal Video decoder, image processor, A/D and D/A SVP-CX32LF conversion IS42S32200C1-6TL SDRAM with 2MX32bits AT24C64A-10PU-2.7 EEPROM T5BS4-9999... - Page 8 1.Tuner (JS-6H2/121 or CDT-6GPL22-00) Pin No. Definition of pin Function description No connection No connection +5V power IIC bus (clock) IIC bus (data) Ground Ground No connection No connection No connection SIF/Out Sound intermediate Frequency output Video/Out CVBS signal output VCC（+5V）...
- Page 9 ● Green color stretch, blue color stretch, skin color enhancement ●Integrated 6th Generation Motion Adaptive 3D Digital Comb Video Decoder with Programmable Filter ●60Hz～100Hz interlaced scanning and 50Hz～75Hz progressive scanning ● frame rate conversion ● 14D： dynamic picture enhancements ● Advanced Film Mode Recovery-3:2/2:2 pull down ●...
- Page 10 DP11 DP12 DP13 DP14 ┆ ┆ DP18 DP19 ┆ ┆ DP23 CPU control terminal PWMO Pulse width modulation input IIC（clock） IIC（data） GPIO0 GPIO1 selection signal GPIO1 GPIO2 selection signal CPU write signal CPU read signal CPU chip selection signal（low level effective） INTN Interrupt signal（low level effective）...
- Page 11 ┆ ┆ MA10 MA11 DQM0 DQM1 Memory read/write byte signal DQM2 DQM3 Memory stack address selection RAS# RAS signal CAS# CAS signal Memory write pulse CLKE Memory clock pulse CS0# Memory chip selection signal Memory clock signal ┆ ┆ ┆ ┆...
- Page 12 TC1P TD1M TD1P Clock and power VDDM VDDM Memory port digital power VDDM VDDM VDDH 3.3V power supply VDDH VDDC VDDC VDDC VDDC 1.8V power supply VDDC VDDC VDDC VDDC VSSC VSSC VSSC VSSC VSSC VSSC VSSC Digital ground VSSC VSSH VSSH VSSM...
- Page 13 PDVDD PLL digital ground power (+1.8V) AVDD_ADC1 AVDD_ADC2 ADC analog power (+1.8V) AVDD_ADC3 AVDD_ADC4 AVSS_ADC1 AVSS_ADC2 ADC analog ground AVSS_ADC3 AVSS_ADC4 AVDD3_OUTBUF +3.3V analog power AVSS_OUTBUF AVDD3_BG_ASS Analog ground AVSS_BG_ASS SVP-CX32LF internal block diagram:...
- Page 14 3．T5BS4-9999 brief introduction: T5BS4-9999 is a high-speed 16-bit micro-controller designed for the control of various mid- to large-scale equipment. T5BS4-9999 is ROM-less product, T5BS4-9999 comes in a 64-pin flat package. Listed below are the features that is used for the control of a variety of small to large devices.
- Page 15 Pin introduction: Designation Function description AVSS Analog ground P70/TA0IN I²C data input P71/TA1OUT I²C clock output P72/TA3OUT PAGE signal output P73/TA4IN +5V power P74/TA5OUT Backlight on/off control P80/TB0IN0/INT5 Remote control signal P81/TB0IN1/INT6 +1.8V power supply P82/TB0OUT0 Remote red control signal P83/TB0OUT1 Remote green control signal P90/TXD0...
- Page 16 Crystal oscillator interface DVSS Ground Crystal oscillator interface Bus byte selection CPU reset control port P96/XT1 Low frequency oscillation input interface P97/XT2 Low frequency oscillation output interface Interrupt request signal Address latch pulse P00/AD0 0~7 bit address/data port ┆ ┆ P07/AD7 P10/AD8/A8 8~15 bit address/data port...
- Page 17 T5BS4-9999 internal functional block diagram： 4．STV-8217/STV-8218 brief introduction STV-8217/STV-8218 main features: ■ Full-Automatic Multi-Standard Demodulation ● B / G / I / L / D / K / M / N Standards ● Mono AM and FM ● FM 2-Carrier and NICAM/BTSC...
- Page 18 ■ Sound Processing: Loudspeaker ● ST royalty-free processing: ST WideSurround, ST OmniSurround (Virtual Dolby Surround and ● Independent Volume / Balance ● Smart Volume Control (SVC), 5-band equalizer and Loudness ■ Analog Audio Matrix ● 4 stereo inputs ● 3 stereo outputs ●...
- Page 19 SCL_FLT SCART channel filtering left SCR_FLT SCART channel filtering right LS_C No connection LS_L Left loudspeaker output LS_R Right ludspeaker output LS_SUB No connection HP_LSS_L No connection HP_LSS_R No connection VSS18_CONV DAC/ADC ground VDD18_CONV DAC/ADC power (8V) /HP_DET Earphone detection ADR_SEL hardware address selection for IIC bus VSS18...
- Page 20 I2S_PCM_CLK No connection I2S_SCLK I²S clock I/O channel1,2,3 I2S_LR_CLK I²S selection signal input/output I2S_DATA0 I²S bus data input/output stereo channel 1 I2S_DATA1 I²S bus data input stereo channel 2 I2S_DATA2 I²S bus data input stereo channel 3 VDD18 +1.8V Power VSS18 Ground BUS_EXP...
- Page 21 STV-8217 internal block diagram:...
- Page 22 STV-8218 internal block diagram: 5．TDA8944J brief introduction: The TDA8944J is a dual-channel audio power amplifier with an output of 2* 7 W at an 8 Ω load and a 12 V supply. The circuit contains two Bridge Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic.
- Page 23 types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products. main features: ● High integration ● Standby and mute mode ● No on/off switching plops ●High supply voltage ripple rejection ● Low standby current ●Outputs short-circuit protected to ground, supply and across the load ●...
- Page 24 TDA8944J internal block diagram: 6. ANX9011L brief introduction: The ANX9011 is an advanced multimedia receiver compliant with High Definition Multimedia Interface (HDMI) Specification 1.1. HDMI is the first transport standard to unify digital video, audio, and control data over low‐cost cables. It connects digital television, flat panel displays and project systems digitally to multimedia sources: DVD players, high definition set‐top boxes, digital video tape recorders, and personal computers.
- Page 25 ●Integrated HDCP decryption engine and pre‐programmed keys ●Supports automated link integrity checking ●Programmable power management with automatic shutdown for power conservation ● 128 pin LQFP packaging Pin function Designation Function description Digital image output terminal VDE23 ┆ ┆ VDE19 VDE18 ┆...
- Page 26 Digital audio output terminal XTAL_IN Crystal oscillator interface XTAL_OUT MCLKOUT Audio main control clock output IIS_SCK IIS bus clock IIS_WS IIS signal selection IIS_SD0 IIS bus data ┆ ┆ IIS channel selection (no connection) IIS_SD3 SPDIF （no connection ） MUTEOUT Mute control signal (no connection ) Control signal port Interrupt request output...
- Page 27 DVSS 6, 13, 18, 25, 30, 37, 65, 69, 78, 80, Digital ground 97, 106, 113, 118, 126 AVSS 46, 52, 56, 60, 64, Analog ground ANX9011L internal block diagram: 7. 74HCT4052D brief introduction: 74HCT4052D is a 4-channel bi-directional analog multiplexer and multi-channel output selector.
- Page 28 Pin introduction: Designation Function description PC left audio input HD left audio input Left audio input SCART2 left audio input AV left audio input Ground Ground Ground Select pulse input （+3.3V Power） SCART2 right audio input PC right audio input Right audio output AV right audio input HD right audio input...
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Page 29: Measure Date
Chapter 3: Analysis of Signal process Flowchart and key point measure date This chapter mainly introduces the receipt and dispose of AV signal the power supply system and system control process of this TV. (Model of LT32GJ01E is taken as an example, other models is similar and will not be explained here for each. - Page 30 R206 SVP-CX32 Pin 177,178,186,193 CX_VA18 2.2mA Sil9011 1.8V Pin 12, 24, 36, 51, 66, FB27 81, 82, 112, 125 R3,R4 CX_VL18 SVP-CX32 1.8V R213 FB1,FB2 Pin 200,202,208,3 Sil9011 Pin 7, 19, 31, 68, 77, 98, 107, 120 Pin 47, 86, 87 FB26 FB29 Sil9011...
- Page 31 74HCT4052D Pin 16 FB12 Starting up mute circuit JS-6B2/121 Tuner Pin 3 FB16 FB24 JS-6B2/121 Tuner Pin 13 FB17 +5V（voltage of line to screen）CON1 Pin 1,2,3,4 (used by FB20 screen less than 32 inches) R232 Sil9011 Pin 44 R198 Back light switch control CON13 R202 Pin 4,3...
- Page 32 (2) Pin level schedule for Voltage regulators on mainboard Position Component model Pin 1(V) Pin 2(V) Pin 3(V) number U18、U22 AZ1117H-1.8TRE1 1.8V 3.3V U19、U24 AZ1117H-3.3TRE1 3.3V AZ1084S-3.3TRE1 3.3V AZ1084S-1.8TRE1 1.8V 3.3V AZ78L08ZTR-E1 (3) Pin sequence of power cord of power panel Position Pin definition Pin function discription...
- Page 34 (1) Socket definition Serial Position Connecting object Function description number number CON40 Power panel GND，GND，+12V，+12V CON11 Power panel +12V，+12V，+12V，GND，GND，GND，+5V， +5V，+5V，+5V，+5V CON13 Back light control line GND，GND，back light switch control，back light brightness control CON14 Keyboard +3.3V、GND、KEY1、KEY2 CON17 Remote control +3.3V、REMOTE、GND、indicator1、indicator1 receiving board CON4 Standby CON5...
- Page 35 Video decoding, image processor, A/D and SVP-CX32LF D/A conversion SST39VF040-70-4C-N Flash MEMORY ， storing whole machine control program T5BS4-9999 Address latch，for latching and extending the 74ALVC573PW address line U18、U21、U22 AZ1117H-1.8TRE1 3.3V to 1.8V DC-DC Converter AZ1084S-3.3TRE1 5V to 3.3V DC-DC Converter U19 、U24 AZ1117H-3.3TRE1 5V to 3.3V DC-DC Converter...
- Page 36 (2)RF inputting color bar signal, I²C bus clock signal SDA, pin 5, 6 of U31, pin 6 of U16, pin 39 of U35, pin 58 of U4, pin 40 of U30, pin 57 of U1, pin 4 of tuner U15: (3) RF inputting color bar signal, I²C bus clock signal SDA, pin 2, 3 of U31, pin 5 of U16, pin 40 of U35, pin 57 of U4, pin 39 of U30, pin 58 of U1, pin 5 of tuner U15:...
- Page 37 (4)RF inputting grey signal, Composite Video Signal waveform at pin 14 of tuner U15, and the waveform at pin 169 of U1（SVP-CX32LF） is like this: (5)RF inputting white signal, SIF Signal waveform at pin 11 of tuner U15, and waveform at pin 73 of sound effect processing IC Stv-8217:...
- Page 38 (6)RF inputting white signal, and inputting sound signal with 1KHz frequency, inductance waveforms at pin 28, 29 of U35, and waveform of L26,L27: (7)Inputting sound signal with 1KHz frequency, with the processing of U33 and power amplifier TDA8944J, waveform at pin 1, 4, 14, 17 of U33, and waveform at CON13 speaker and CON14earphone output interfaces:...
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Page 39: Troubleshooting
Chapter 4: Maintenance Procedure and Examples of Typical troubleshooting When you meet the following common problems, you might diagnose and get the solutions without contacting with the technicians. Symptoms Possible Reason Solutions No picture, no sound, and no 1.The power cord is not plugged in 1.Plug the power cord in indicator light on 2.The power is off... -
Page 40: Chapter5 Spare Part Lists
Chapter 5: Spare Part Lists This listing of maintenance and repair parts are presented for reference only, modification of parameters will not be informed. For accurate models or specifications, please consult the newest data of our company. (LT32GJ01E is taking an example) Proportion of easy Number Name... -
Page 41: Chapter6 Factory Setup And Notice
Chapter 6: Factory Setup and notice 1. Enter factory menu Switch on TV set, and make LCD at operating state: ① Press 【MUTE】 key on remote control； ② Press “MENU” key on remote control, and switch to “SOUND” option with 【V+】,【V-】key；... - Page 42 Use 【P+】and 【P-】keys on remote control to make up or down option, and use【V+】 and【V-】keys to set. Contents of sub pages： Panel Control Setting Setting item Remark value LVDS Mapping 0x09 Polarity of LVDS signal Backlight Back light brightness value 1 SavePower1 Back light brightness value 2 SavePower2...
- Page 43 big/small letters together Logo Logo Colour Modified according to user’s require colour Min/Max Control Setting item Setting value Setting item Setting value Con Min Vol Min Con Mid Vol Mid 1 Con Max Vol Mid 2 Bri Min Vol Mid 3 Bri Mid Vol Mid 4 Bri Max...
- Page 44 C. Set CLEAR E²PROM will clear the memory data, So do not set it unless it is needed; other setting items do not need setting. 2. Setting method of factory menu ⑴ Choose setting item Operators can choose setting item orderly with 【P+】 and 【P-】 key, font having background display represents the item has been chosen.
- Page 51 Appendix 2 Power Module Schematic Diagram...
- Page 52 Final Assembly Diagram LT2618...
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