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Summary of Contents for Changhong Electric MSD308PX
- Page 1 LCD COLOUR TV MAINTENANCE MANUAL MODEL: LS18 CHASSIS（MSD308/309PX） Please read this manual carefully before maintenance...
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Page 2: Table Of Contents
3-1 Main IC and functions of LS18 ........................... 5 3-2 Pin function description of LS18 chip ......................... 7 3-2-1 MSD308PX recommended operating power conditons ................... 7 3-2-2 Pin function of DTI1-E4I1VH tuner ........................ 7 3-2-3 EN25Q64-104HIP brief introduction: ......................7 3-2-4 74HC4052 brief introduction: .......................... -
Page 3: Chapter1 Safety And Notes
Chapter1 Safety and notes 1-1 Installation notes (1) Please don't beat or rub, scratch the surface of the LCD screen heavily, don’t touch it with your hand casually. (2) When the screen is dirty, please clean it with absorbent cotton or cotton cloth slightly. (3) Please clean it timely when water or other viscosity pollution fall, which may make the LCD face or color change. -
Page 4: High-Voltage Warning
dismantle, we can take some photos of the line route for the comparison of installing. (4)After check and maintenance, please assure that there is no foreign body in the machine when install. 1-5 High-voltage warning The high-voltage of the LCD screen is generated by the power supply step-up board, without attention to exposure to the high voltage, one may meet a serious electricity shock. -
Page 5: Introduction Of Terminals(Practicality Photos)
Power power supply AC100V~240V, 50/60Hz power achievement <150W + 0° ~ + 40° ， operation temperature requirement for environment storage temperature - 20 ° ~ + 60° operation humidity 10% ~ 85% appearance size W x H x D net weight no accessory 2-2 Introduction of terminals(practicality photos) Backlight on/off... -
Page 6: Chapter3 Main Chip Functions And The Introductions Of Power Supply
Chapter3 Main chip functions and the introductions of power supply 3-1 Main IC and functions of LS18 No. Item no. Model Main function DTI1-E4I1VH(JUB2.891.170) Tuner output IF signal MSD308PX Video decoder, image processor, A/D and D/A conversion AT24C04BN-SH-T Store HDCP key Power switch AO4459 U9，U15 W9751G6IB-25... - Page 7 U51: AP1534SG13 U11: STA335BW U39: LR1117/A-1.8 U24:FLASH U15:DDR U52: AO4459 U4:EEPROM U37: LR1117/A-3.3 U36: LR1117/A-2.5 U9:DDR U38: LR1117/A-3.3 U18: AS7805DTR-E1 U2: MSD308PX U30: SAW U53: AO4803A U19: SGM330A-YQS U17: SGM330A-YQS U10: DTI1-E4I1VH (JUB2.891.170) U20: SN74LV4052...
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Page 8: Pin Function Description Of Ls18 Chip
3-2 Pin function description of LS18 chip 3-2-1 MSD308PX recommended operating power conditons 3-2-2 Pin function of DTI1-E4I1VH tuner SYMBOL Description Not connect VCC2 +5V POWER RF-AGC RF-AGC monitor(Not connect) I2C Serial Clock I2C Serial DATA VCC3 +5V POWER Tuning voltage monitor(Not connect) -
Page 9: Sgm330 Brief Introduction
3-2-5 SGM330 brief introduction: Pin introduction: SYMBOL Function description S1A, S1B, S1C, S1D 2,3,5,6,10,11,13,14 Analog video I/O S2A, S2B, S2C, S2D Select input Switch-enable input 4,7,9,12 DA, DB, DC, DD Analog video I/O Ground Power supply 3.3 Brief introduction of power supply Use for mainbord power 5VSB supply. -
Page 10: Chapter4 The Chassis Frame Diagram, Mainboard Power Supply Systems, Mainboard Interface Definition And The Waveform Of Key Points
Chapter4 The chassis frame diagram, mainboard power supply systems, mainboard interface definition and the waveform of key points This chapter mainly introduce the chassis frame diagram, power supply system, interface definition and each key point’s wave shape. 4-1 The chassis frame diagram 4-2 Power supply system Power board has two kinds of output voltage: +12V and +5V. -
Page 11: Pin Voltage Of The Voltage Adjustor On The Mainboard
4-2-2 Pin voltage of the voltage adjustor on the mainboard 1.32V 1.8V 2.5V PIN4,5 =5V PIN9,10=12V 3.3V 3.3V item No. U37,U38 output voltage 1.8V 1.32V 3.3V 2.5V... -
Page 12: Interface Definition
4-2-3 Interface definition Backlight ON/OFF LED IR ON/OFF HDMI3’s signal 5VSTB side AV’s signal Used for USB POWER... -
Page 13: The Waveform Of Key Points
4-3 The waveform of key points... -
Page 14: Chapter5 Software Upgrade Instructions
Chapter5 Software upgrade instructions 5-1 Software upgrade tooling---there are two kinds of using upgrade tooling 1.Use the combined interface(the parallel port) upgrade tooling: use the upgrade programme: TV Utility_4.4. 2.Use interface upgrade tooling, use the upgrade programme: versions higher than TV Utility_4.4 Combine interface or USB Computer upgrade... - Page 15 3.Pls select “OK” once you connect the tooling successfully 4.Select “Read”...
- Page 16 5. Choose right SW document and open the file. 6. Select “Auto”...
- Page 17 7. Select “Run”. 8. The SW is updating.
- Page 18 9. Pls turn on the TV again once the SW is updated successfully.
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Page 19: Chapter6: Classical Accident Maintenance Procedures And Examples
Chapter6: Classical accident maintenance procedures and examples 6-1 The thinking of don’t boot 6-2 Common problems for your reference To speed you to dignose and solve problems, the following commom problems are offered for your reference Symptoms Possible Reason Solutions No picture, no sound, and no 1.The power cord is not plugged in 1.Plug in the power cord... -
Page 20: Chapter7 High Voltage And High Current Wearing Parts List
Chapter7 High voltage and high current wearing parts list The introduction of maintenance parts are for reference only, modification of parameters will not be informed any more. For accurate data and related specifications, please consult the newest data of our company. -
Page 21: Chapter8 Factory Mode Parameter Setting Instructions And Notes
Chapter8 Factory mode parameter setting instructions and notes 8-1 Enter into the factory mode Switch on TV set, and make it works normally: Press 【SOURCE】 key on the remote control Press number keys “3”、“1”、“3”、“8” on remote control to enter password. Finish entering the factory mode. -
Page 22: Setting Method Of Factory Menu
Picture Mode standard Picture Mode Soft Contrast Contrast Brightness Brightness Saturation Saturation Sharpness Sharpness Picture Mode Vivid Picture Mode User Contrast Contrast Brightness Brightness Saturation Saturation Sharpness Sharpness COLORTEMP Setting items value Color temp mode cool Color temp r gain Color temp g gain Color temp b gain Color temp r offset... -
Page 23: Chapter9 Instructions Of Ls18 Module Circuit Schematic Diagram
9-2 Check each channel/source to see if the image and sound are normal 9-3 main BOM of the whole machine name model moudle quantity R-LCD 屏 LTA320AP02 MLT868 R-电源模块 MSD308PX R-视频处理集成电路 JUG7.820.745-1 R-主板印制板 R-存储器集成电路 DTI1-E4I1VH(JUB2.891.170) R-电子调谐器 JUG6.604.950 R-带线插头 STA335BW13TR(AOC) R-逻辑集成电路... - Page 24 R-AV 插座 AVW-15-5R-8.5 R-AV 插座 AVW-15-5R-8.5 K9352D$K9352N$HDAF38A2D$D9352H R-声表面滤波器 R-AV 插座 AVW-13-3RE-1S-8.5-A 线卡 1040K130--G005 R-耳机插座 ZW-3F-7P-B R-固定电感 DL1015-220K$LCP112-22μH DL1015-220K$LCP112-22μH R-固定电感 DL1015-220K$LCP112-22μH R-固定电感 DL1015-220K$LCP112-22μH R-固定电感 JUG7.820.686-1 R-按键板印制板 R-包装袋 JUC8.840.023 R-电源集成电路 AS7805DTR-E1 SN74LV4052ADR$74HCT4052D$74HC4052D R-逻辑集成电路 $M74HC4052RM13TR R-AV 插座 AVW-13-3R-8.5-TV-A R-AV 插座 AV-1-3PKA A020008211VD2A R-其他插座 R-遥控接收板印制板...
- Page 25 LBA277T1 R-贴片二极管 L2N7002LT1G$2N7002LT1G$L2N7002LT1$2 R-场效应管 N7002E$2N7002-N72 L2N7002LT1G$2N7002LT1G$L2N7002LT1$2 R-场效应管 N7002E$2N7002-N72 L2N7002LT1G$2N7002LT1G$L2N7002LT1$2 R-场效应管 N7002E$2N7002-N72 FHBAT54C-E$BAT54CLT1G$LBAT54CLT1G R-贴片二极管 FHBAT54C-E$BAT54CLT1G$LBAT54CLT1G R-贴片二极管 R-贴片二极管 FHBAT54C-E$BAT54CLT1G$LBAT54CLT1G R-瓷介电容 1206F105Z500NT 1206F105Z500NT R-瓷介电容 RY21-2W-0.27ΩJ RI-15×3 R-氧化膜电阻 R-铝电解电容 CD110X-16V-470μFM T-B-3.5 R-遥控接收板组件 JUG6.695.480 JUG6.694.512 R-按键板组件 JUG6.690.717 R-主板组件 JUG6.618.483 R-按键板组件 R-遥控接收板组件 JUG6.695.424 R-侧置 USB 板组件 JUG6.693.224 R-侧/前置...
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Page 26: Appendix ： Circuit Schematic Diagram
Appendix ： Circuit Schematic Diagram Power Input 1.32V DC-DC DVD Power Interface 3.3VU 1.32V NC/MP1482 CON24 1482VCC 1482OUT 15uH/2A CON7-2.0mm L:OFF R296 R295 H:ON 4.7K 100k 1482EN C122 1482COMP 0.1u CA56 PWRDN COMP CA51 NC/SS34 330R C119 R376 NC/100R C116 100uF/16V 0.1u 100uF/16V... - Page 27 HDCP KEY EEPROM MSD309PX MSD309PX TS back from CI TS to CI 3.3VA PCMCIA PCM_OE_N PCM_OE_N TS_MDO[7:0] MSD309PX TS_MDI[7:0] PCM_IORD_N PCM_IORD_N 5 TS_MDO[7:0] Y 16 TS1_D0 TS_MDI7 PCM_IRQA_N R341 4.7K C316 CI_D0 TS_MDO0 PCM_IRQA_N 5 HDMI AUDIO CI_D1 PAD_PCM_D[0] PAD_TS1_D[0] AD14 TS1_D1 TS_MDO1...
- Page 28 RP39 RP50 22RX4 22RX4 MIUA_DQS0 MA_DQS0 MIUA_DQS0 MIUA_DQS0B MA_DQSB0 MA_MCLK MIUA_DQS0B MIUA_MCLK 1.8VA MA_MCLKZ MIUA_MCLKZ 22RX4 RP57 MIUA_DQS1 MA_DQS1 MIUA_DQS1 MIUA_DQS1B MA_DQSB1 U9 W9751G6IB-25 MIUA_DQS1B MA_DQM1 MA_DQM0 MA_DQS0 A_MVERF Close to DRAM LDQS Vref MIUA_ODT MA_ODT MA_DQSB0 MA_CKE MIUA_ODT LDQS# MA_DQS1 VssQ UDQS# VddQ...
- Page 29 TUNER RF AGC Switch DTI1-E4I1VH LG TDTC-G501D SAMSUNG DTOS403IR121 Q404靠近 t uner R FA G C 脚放置 +5V_B2_A CH DTI1-E4I1VH CON79 +5V_B1_A T_RF_AGC RF_AGC C455 C460 RF_AGC IF_TV C453 C471 IF_OUT Q404 100uF 0.1u #IF_OUT MMBT3906 100uF 0.1u C477 IF_AGC R422 IF_AGC 0.1u...
- Page 30 CARD DETECT PWR CTRL FB/500mA VCC-PCMCIA Q38 NC/A03401 R397 R393 C853 NC/10n R711 DD40 R708 BAT54C NC/10K PCM_CD1_N NC/4.7k R660 NC/100K PCM_CD_N R659 100R R716 PCM_CD2_N NC/10k R715 R658 NC/MMBT3904 NC/1K R713 NC/1k NC/MMBT3904 PCM_PWR_CTL PCMCIA Connector NAND FLASH VCC-PCMCIA VCC-PCMCIA CONN1 PCMCIA_CNT...
- Page 31 HDMI Input HDMI CEC CON9 DB2+ R133 RXB2P DATA2+ 3.3VU R135 RXB2N RXB0N RXB0N DATA2 SHIELD DB2- R137 RXB1P RXB0P RXB0P DATA2- DB1+ R136 RXB1N RXB1N RXB1N DATA1+ R139 RXB0P RXB1P R324 RXB1P DATA1 SHIELD DB1- R140 RXB0N RXB2N NC/33K RXB2N DAT1A- DB0+...
- Page 32 VGA INPUT Audio switch Audio switch VGA-G R138 RGB1_SOG ESD-0603 5VPA ISP-RXD HD1-Y R156 DD21 ISP-RXD R113 VGA-B R131 5VPA ESD-0603 RGB1_G+ ISP-TXD DD20 ISP-TXD 2010.3.18 HD1-Pb FB/100mA ESD-0603 DD14 VGA-HS VGA-R R130 RGB1_B+ CON7 R165 R166 ESD-0603 DD43 DD42 DD41 HD1-Pr CA75...
- Page 33 5V_USB1 +5V_USBO1 5V_USB0 +5V_USBO0 SMD1206P100TF_1A SMD1206P100TF_1A C143 C144 0.1u 0.1u close to USB connector close to USB connector USB_DPO R297 0R USB_DP USB_DMO USB_DM R282 0R CON9-2.0 DD44 DD58 +5V_USBO0 USB_DMO USB_DPO <=2pF <=2pF +5V_USBO1 ESD-0603 ESD-0603 USB1_DMO USB1_DPO CON42 USB1_DPO R298 0R USB1_DP...
- Page 34 AUDIO pre-ap Power Ampifier 12VA 12V_AMP R271 CON4 VCC-OP2 0.47R/2W CON4-2.0mm C2001 C2002 R312 +12V_AA +12V_AA 470uF/16V 470uF/16V 3.3VA STBV_3.3V FB220/300mA C164 2.2u SC2-OUTL 12V_AMP R307 AUOUTL0 MMBT3904 R288 R299 3.4k 3.4k R316 CH2OUT CH1OUT 330R AGND 放大倍数 =R 308/R 313 R294 R343 L128 15uH/2A...
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