Skyworth 8M79B Chassis Service Manual
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Skyworth 8M79B Chassis Service Manual

Skyworth 8M79B Chassis Service Manual

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SERVICE MANUAL

8M79B CHASSIS
Design and specifications are subject to change without prior notice.
SIZE:A5
(Only Referrence)
Description:
SERVICE MANUAL 8M79B
MODEL.
Brand Name:
JOB NO.
Engineering Dept:
Artwork By:
Checked By:
Approved By:
SKYWORTH
2012-02-04
Date:
Date:
Date:

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  • Page 1: Service Manual

    SERVICE MANUAL 8M79B CHASSIS Design and specifications are subject to change without prior notice. (Only Referrence) Description: SERVICE MANUAL 8M79B SKYWORTH MODEL. Brand Name: JOB NO. Engineering Dept: 2012-02-04 Artwork By: Date: SIZE:A5 Checked By: Date: Approved By: Date:...

  • Page 2: Table Of Contents

    Content-------------------------------------------------------------------------------2 Technical Specification-----------------------------------------------------------3-13 8M79 Block Diagram -------------------------------------------------------------14 List of key parts---------------------------------------------------------------------15 IC BLOCK Diagram----------------------------------------------------------------16-29 MAIN PCB-TOP--------------------------------------------------------------------30 MAIN PCB-BOT--------------------------------------------------------------------31 Circuit Diagrams--------------------------------------------------------------------32-40...
  • Page 3 LCD 8M79B chassis.
  • Page 4 For 32LED For 42LED Base on different order FOR 32LED FOR 42LED...
  • Page 5 For 42LED For 42LED 12500(266, 276) 9800 12500 9800(280, 290) 6500(313, 329)
  • Page 6 12000...
  • Page 7 1080 1920 Standard Standard English Middle...
  • Page 9 Cabinet Design (Example: 01,23 series ) Product Nb Chassis solution MSD309 + ISDB-T Demod Chassis name 8M79B Chassis PCB Standard Skyworth RGB New Standard Predecessor (replace) MP date requested (ETD) 2011.8 MP date confirmed by supplier (ETD/ETA) Status( Pre./Finish ) Regional requirement Homologation (Gostandard/CE/MPTT/CB/…)
  • Page 10 Picture freeze Multi picture : PIP ( AV )/POP（AV） Dynamic Backlight Control LED Backlight Deinterlacer (No/linerar/motion adaptive/motion 3D motion adaptive compensative) Film mode / reverse 3:2/2:2 pull down Yes / Yes Full HD support ( 1080P ) Single scan / Dual scan ( 120HZ ) Single scan Zoom type : 4/3 format Zoom type : 14/9 Zoom...
  • Page 11 Compatible audio format if DVD/USB: MP3/WMA(depending on license) MP3/WMA/AAC/MPEG1/… Playable Discs (CD/CD-R(RW)/CD-ROM/DVD+R/+RW/- R/-RW) Card reader format compatibility Macrovision Yes（FOR USB） Network User convenience OSD Language* English/Spanish/Portuguese/French OSD Positioning OSD Transparency Adjust OSD Timeout Adjust Customer Brand name(LOGO) IB languages English ATV Program Numbers (example: 99+3AV input ) 99+7AV DTV Program Numbers...
  • Page 12 Screen saver Blue Back LED indicator(Power on/Standby) Blue / Red Connectors -Rear RF Input (Antenna): Air/ Cable/ 2in1 Air+Cable Scart : CVBS in&out / RGB / S-VIDEO CINCH video in / out（AV1） CINCH audio in / out (No volumpe control on Audio out/can be jack 3,5mm) S-video in Component Video Input (YCrCb/YPrPb)
  • Page 13 English Circuit diagram Batteries Product registration Card Yes（English) AC Cable Length 1.8m Audio Cord (Jack 3.5mm) VGA Cord Wallmount frame Optional Antenna Cable 6 in 1( YPbPr & CVBS) cable adapter 3D Glasses Yes (2 Sets) General Data Size (W x H x D, with stand) in mm Size (W x H x D, without stand) in mm Package Size (W x H x D, without stand) in mm Net Weight in kg...

  • Page 14: Power Supply

    SYSTEM POWER SUPPLY KEY PAD, IR Receiver ,Ambient Sensor Uplayer1 Optional PIXELWORKS 3D Processor FLASH Motion Engine PA131DG HDMI1 DDRII MSD309PX-LF-SB DVB-T&ATV Demo d DVB-T & IF Demo. Build in MPEG1/2/4 /H.264 Decoder JPEG MP3 Decoder TPA3121 3D Comb filter Video Decoder 10W + 10W Toshiba TC90517 ISDB-T Demod...

  • Page 15: List Of Key Parts

    List of key parts Name Position Type HS0038B4 5300-140038-0010 Bass SL-R3018H-3E 5600-106154-0060 Speaker Treble YDG3040-2 5600-708254-00 49U3H 4900-125453-R000 Crystal HC-49U/S 4900-124053-R000 Tuner VA1P1BF8405 5202-45733D-7H10 F4401 4900-744015-0X00 MP1482DS 476A-M14820-0080 MP1482DS 476A-M14820-0080 MP1482DS 476A-M14820-0080 MP1482DS 476A-M14820-0080 W9751G6JB-25 4737-W97511-0840 W9751G6JB-25 4737-W97511-0840 EN25F32-100HIP 471R-N25321-0080 TC90517FG 4701-T90510-0640 AS1117L-3.3...

  • Page 16: Ic Block Diagram

    IC Block Diagram Pin Configurations---AS1117L-3.3 L Package U Package (SOT-223) (SOT-89) INPUT INPUT OUTPUT OUTPUT ADJ/GND ADJ/GND T Package R Package INPUT INPUT OUTPUT OUTPUT ADJ/GND ADJ/GND S Package (TO-263) INPUT OUTPUT ADJ/GND -16-...
  • Page 17 IC Block Diagram Pin Configurations---AS1117L-ADJ L Package (SOT-223) INPUT OUTPUT ADJ/GND PIN ASSIGNMENT The package of AX3113 is SOP-8L; the pin assignment is given by: Name Description Feedback pin ( Top View ) Power-off pin H normal operation(Step-down) L Step-down operation stopped (All circuits deactivated) AX3113 Ocset...
  • Page 18 IC Block Diagram LM4558 MP1482DS TOP VIEW COMP -18-...

  • Page 19: Pin Configuration

    IC Block Diagram W25X40BVSNIG PWP (TSSOP) PACKAGE (TOP VIEW) PVCCL PGNDL PGNDL PVCCL LOUT MUTE AVCC AVCC BYPASS GAIN0 AGND GAIN1 AGND PVCCR ROUT VCLAMP PGNDR PVCCR PGNDR PAD CONFIGURATION PIN CONFIGURATION WSON 6X5-MM SOIC 150-MIL / 208-MIL PIN CONFIGURATION PDIP 300-MIL -19-...
  • Page 20 IC Block Diagram EN25F32 Figure.1 CONNECTION DIAGRAMS 8 - LEAD SOP / DIP 8 - CONTACT VDFN 16 - LEAD SOP -20-...
  • Page 21 IC Block Diagram EN25F32 Figure 2. BLOCK DIAGRAM -21-...
  • Page 22 IC Block Diagram EN25F32 SIGNAL DESCRIPTION Serial Data Input (DI) The SPI Serial Data Input (DI) pin provides a means for instructions, addresses and data to be serially written to (shifted into) the device. Data is latched on the rising edge of the Serial Clock (CLK) input pin. Serial Data Output (DO) The SPI Serial Data Output (DO) pin provides a means for data and status to be serially read from (shifted out of) the device.
  • Page 23 IC Block Diagram CONFIDENTIAL TC90517FG Toshiba products specification [Tentative] Configuration All functions required for ISDB-T demodulation and error correction are built into the TC90517. The input signals to be supported are a low IF (intermediate frequency) signal and direct IF signal. Baseband IQ signals can also be input.
  • Page 24 IC Block Diagram CONFIDENTIAL TC90517FG Toshiba products specification [Tentative] Pin Assignment (Top view) -24-...
  • Page 25 IC Block Diagram Pin Functions This specification indicates pins and their signals in upper case letters and registers and their signals in lower case letters. (Note4) (Note5,7) (Note 3) (Note 2 and 6) Pin name Function PU/PD 0: Normal operation 1: Shut down TSMD0 Shut down XSEL1...
  • Page 26 IC Block Diagram CONFIDENTIAL TC90517FG Toshiba products specification [Tentative] DC component was cut. AD_DVSS ADC digital GND Connects to DGND. AD_ DVDD ADC digital power supply Connects to digital +2.5 V typ. Digital GND Connects to DGND. DR1VDD Digital +1.2 V power supply Connects to digital +1.2 V typ.
  • Page 27 IC Block Diagram PRELIMINARY W9751G6JB 4. B A L L C O N FIG U R A TIO N V D D V S S V S S Q U D Q S V D D Q D Q 14 V S S Q U D M U D Q S...
  • Page 28 IC Block Diagram PRELIMINARY W9751G6JB 5. BALL DESCRIPTION BALL NUMBER SYMBOL FUNCTION DESCRIPTION Provide the row address for active commands, and the column address and Auto-precharge bit for Read/Write commands to select M8,M3,M7,N2,N8,N3 one location out of the memory array in the respective bank. ,N7,P2,P8,P3,M2,P7 A0−A12 Address...
  • Page 29 IC Block Diagram PRELIMINARY W9751G6JB 6. BLOCK DIAGRAM CLOCK BUFFER CONTROL SIGNAL GENERATOR COMMAND DECODER COLUMN DECODER COLUMN DECODER CELL ARRAY CELL ARRAY BANK #0 BANK #1 MODE REGISTER SENSE AMPLIFIER SENSE AMPLIFIER ADDRESS BUFFER PREFETCH REGISTER DQ15 DATA CONTROL BUFFER LDQS LDQS...

  • Page 30: Main Pcb-Top

    MAIN PCB-TOP -30 -...

  • Page 31: Main Pcb-Bot

    MAIN PCB-BOT -31-...
  • Page 32 DC-DC Module Power Input 1.32V DC-DC 1.32V 3.3VU MP1482 MP1482 1482OUT 22uH 22uH 12VA MPS1482 MPS1482 5VU 12VA 24VA 1482EN 22uH 22uH C105 C105 1482COMP C122 C122 COMP CA54 CA54 0.1u 0.1u 2.2K 2.2K C116 C116 10nF 10nF C386 C386 100uF/16V 100uF/16V 0.1u...
  • Page 33 SYSTEM EEPROM MSD309PX 3.3VA C316 C316 MSD309PX MSD309PX MSD309PX MSD309PX 2010-3-31 0.1u 0.1u HDMI HDMI AUDIO AUDIO PCMCIA PCMCIA NC/24C64 NC/24C64 HD1-Lin RXA0N PAD_RX0N_A PAD_LINEIN_L0 HD-Lin PAD_PCM_D[0] PAD_TS1_D[0] HD1-Rin AD14 RXA0P HD-Rin PAD_RX0P_A PAD_LINEIN_R0 PAD_PCM_D[1] PAD_TS1_D[1] AV1-Lin AD15 RXA1N AV1-Lin PAD_RX1N_A PAD_LINEIN_L1 PAD_PCM_D[2]...
  • Page 34 RP39 RP39 RP50 RP50 22RX4 22RX4 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 22RX4 RP57 RP57 MIUA_DQS1 MA_DQS1 MIUA_DQS1 MIUA_DQS1B MA_DQSB1 U9 W9751G6IB-25 U9 W9751G6IB-25 MIUA_DQS1B MA_DQM1 MA_DQM0 MA_DQS0 A_MVERF Close to DRAM LDQS Vref MIUA_ODT...
  • Page 35 ISDB-T TUNER TUNER POWER RF AGC Switch Q604靠近tuner RFAGC脚放置 VA1P1BF8401 VA1P1BF8401 VA1P1BF8402 VA1P1BF8402 T_RF_AGC RF_AGC RF_AGC LM7805 LM7805 Q604 Q604 12VA 3906 3906 5V_TUNER R422 R422 5V_B 100K 100K 3.3VA C509 C509 R409 R409 47pF 47pF 0.1u 0.1u 5V_TUNER C510 C510 5V_B 47pF...
  • Page 36 HDMI Input HDMI CEC DB2+ R133 R133 RXB2P DB2+ DATA2+ DATA2+ R135 R135 RXB2N DATA2 SHIELD DATA2 SHIELD DB2- R137 R137 RXB1P DB2- DATA2- DATA2- DB1+ R136 R136 RXB1N DB1+ DATA1+ DATA1+ 3.3VU R139 R139 RXB0P DATA1 SHIELD DATA1 SHIELD DB1- R140 R140...
  • Page 37 VGA INPUT Analog Video & Audio in HD1-Y VGA_5V HD1-Y ESD-0402 ESD-0402 RGB0-SOG DD14 DD14 VGA-HS HD1-Pb VGA-R HD1-Pb VGA-G ESD-0402 ESD-0402 RGB0_GIN+ VGA-G DD16 DD16 VGA-VS HD1-Pr HD1-Pr VGA-B ESD-0402 ESD-0402 VGA-B DD17 DD17 DDC-SCLIN DD74 DD74 DD65 DD65 DD75 DD75 RGB0_BIN+...
  • Page 38 +5V_USB CA110 CA110 3.3VA 100uF/16V 100uF/16V R189 R189 4.7K 4.7K close to USB connector ON_USB_MOS 1 ON_USB 4.7K 4.7K Q434 Q434 ON_USB 3904 3904 +5V_USB USB_A USB_A USB1_DMO USB1_DPO +5V_USB R297 0R R297 0R USB_DPO USB_DP USB_DMO USB_A USB_A USB_DM R282 0R R282 0R USB_DMO...
  • Page 39 Power Down MUTE AMPLIFIER AUDIO pre-ap HeadPhone Out 12VA 12-24 12-24 R283 R283 R294 R294 6VBuf1 PHONEJACK STEREO SW 180d PHONEJACK STEREO SW 180d NC/24K NC/24K R296 R296 SHUTDOWN R306 R306 Q447 Q447 10k/NC 10k/NC 3904/NC 3904/NC R437 R437 1N4148 1N4148 12-24 100uF/16V CA84...
  • Page 40 60mA 2.5V_Demod 3.3V_Demod B3_3.3V DR2VDD L406 L406 L407 L407 FB0603 FB0603 FB0603 FB0603 3.3V_Demod C859 C859 C860 C860 C861 C861 C862 C862 C863 C863 C867 C867 C868 C868 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u R509 R509 4.7k 4.7k Demod_RST...
  • Page 41 SKYWORTH R&D CENTER Power Supply Service Manual : 168P-P32EWM-K0 PART NO. DESCRIPTION ： VERSION NO. ： ： PAGE DESCRIBED ： Zhou Cong ： Hu xiangfeng CHECKED APPROVED ： Bao xiaojie Released Date: 2012-07-21...
  • Page 42 168P-P32EWM-K0 Service manual Modification record Modification Edition Record Described Checked Approved date 2012-7-21 First record Zhou Cong Hu Xiangfeng Bao Xiaojie...
  • Page 43 168P-P32EWM-K0 Service manual Contents Main contents Page General Description General Introduction of Circuit The main chip description PCB TopOverlay or BottomOverlay Maintenance instructions The information of power supply designer Schematic diagram...

  • Page 44: Technical Specification

    168P-P32EWM-K0 Service manual Warning This manual is only used for the experienced service person , and does not apply to the general consumer。 The manual does not have warnning or alert for the potential hazards caused of the non-technical personnel attempting to repair this product . Electrical products should be an experienced professional and technical personnel for maintenance and repair ,any other person attempts to maintain and repair the products covered by this manual will likely be seriously hurt or even life-threatening.

  • Page 45: Circuit Diagrams

    168P-P32EWM-K0 Service manual 1.2.3 Output ripple and noise Output Voltage Ripple & Noise (Max.) +24V 240mVp-p@25℃; 350mVp-p@-10℃ +12V 120mVp-p@25℃; 200mVp-p@-10℃ +5VSB 100mVp-p@25℃; 200mVp-p@-10℃ Note: 1) Measurements shall be made with an oscilloscope with 20MHz bandwidth. 2) Outputs shall be bypassed at the connector with a 0.1uF ceramic capacitor and a 10uF electrolytic capacitor to simulate system loading.
  • Page 46 168P-P32EWM-K0 Service manual 2.2.2 the ：MICRO ELECTRONICS OZ9967 driver of the circuit...
  • Page 47 168P-P32EWM-K0 Service manual 3. The main chip description The main chip 3.1.1 T he main chip general description The main chip of power supply is the TEA1733P which is produced by NXP corporation. The operating mode is CCM (continuous conduction mode), and the operating frequency is 65KHz.
  • Page 48 168P-P32EWM-K0 Service manual 3.1.4 The IC pin description 3.2 The DC-DC chip 3.2.1 General description The DC-DC used for standby chip, using SY8172Y, double synchronous rectification,and operating frequency is 700KHz. 3.2.2 The chip block diagram...
  • Page 49 168P-P32EWM-K0 Service manual 3.2.3 The chip pin information 3.2.4 The pin description and the voltage...
  • Page 50 168P-P32EWM-K0 Service manual 3.3 The driver chip 3.3.1 General description The OZ9967 is an LED controller that drives a number of LEDs connected in serial or parallel configuration. 3.3.2 The chip block diagram 3.3.3 The chip pin information...
  • Page 51 168P-P32EWM-K0 Service manual 3.3.4 The pin description and the voltage...
  • Page 52 168P-P32EWM-K0 Service manual 4. PCB TopOverlay and BottomOverlay 4.1 The power supply TopOverlay 4.2 The power supply BottomOverlay...
  • Page 53 168P-P32EWM-K0 Service manual 5. Maintenance instructions 5.1 Common Fault Analysis and Notes 1.No +5VSB output voltage If there is no +5VSB output voltage , we should focus on checking the DC-DC IC(IC301) and judge whether the IC is operating . Monitor its VIN pin and check voltage is normal or abnormal . If it is normal , firstly , check the DC-DC IC peripheral circuit .
  • Page 54 168P-P32EWM-K0 Service manual 5.2 Service process NO +5VSB Check+5V output,Whether Examine the reason the short-circuit Is IC301 damaged? Change the damaged component Check the peripheral circuit of Examine the positive voltage of C312: 11.8V-12.2V? IC301 Is IC100 damaged? Change the damaged component Examine the reason a n d Check...
  • Page 55 168P-P32EWM-K0 Service manual 5.2 Port and the connection defined 5.2.1 PIN10 CN400 Connection And Function Pin Connection Function LED- LED- LED- LED- LED- LED- LED- LED- LED+ LED+ LED+ LED+ Note: CN400 TYPE : 2.0mm 5.2.2 PIN14 CN300 Connection And Function Pin Connection Function +24V...
  • Page 56 168P-P32EWM-K0 Service manual Key components and service parts list Material Position Substitute Material number Function Remark models number Material 4706-B17330-0080 TEA1733P IC100 Main chip DC-DC chip 47EC-S81721-0080 SY8172Y IC301 driver 476K-Z99671-0280 OZ9967GN IC400 chip Q201 Main MOS 4655-P27610-00 AOTF10N65 Q412 Boost MOS 4666-M15N10-0S00 ME15N10-G/TO252...

  • Page 57: Schematic Diagram

    168P-P32EWM-K0 Service manual 6.Information of Power supply designers Team Ⅱ Power Supply,R&D Center Hu Xiangfeng and Zhou Cong huxiangfeng@skyworth.com Email： zhoucong@skyworth.com 7. Schematic diagram C301 R301 C210 R210 L301 +24V/2A D101 D102 D301 C103 C104 C303 C302 C304 R309 R310...

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