Akai DVP4785KDSM Service Manual
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Akai DVP4785KDSM Service Manual

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  • Page 2: Table Of Contents

    CONTENTS 1. PRECAUTIONS-------------------------------------------------------------------------------------------------------------------- 1 1-1 S ---------------------------------------------------------------------------------------------------------- 1 AFETY RECAUTIONS 1-2 S ------------------------------------------------------------------------------------------------------ 2 ERVICING RECAUTIONS 1-2-1 General Serving Precautions --------------------------------------------------------------------------------------------2 1-2-2 Insulation Checking Procedure------------------------------------------------------------------------------------------3 1-3 ESD P ------------------------------------------------------------------------------------------------------------- 3 RECAUTIONS 2. REFERENCE INFORMATION ------------------------------------------------------------------------------------------------4 2-1 C --------------------------------------------------------------------------------------------------- 4 OMPONENT ESCRIPTIONS 2-1-1 DVD SANYO HD60 PUH ------------------------------------------------------------------------------------------------4 2-1-2 DVD Processor Chip MTK1389-----------------------------------------------------------------------------------------6...

  • Page 3: Precautions

    1. PRECAUTIONS 1-1 Safety Precautions 1) Before returning an instrument to the customer, always make a safety check of the entire instrument, including, but not limited to, the following items: (1) Be sure that no built-in protective devices are defective or have been defeated during servicing.

  • Page 4: Servicing Precautions

    2) Read and comply with all caution and safety related 5) Components, parts, and/or wiring that appear to have notes non or inside the cabinet, or on the chassis. overheated or that are otherwise damaged should be replaced with components, parts and/or wiring that 3) Design Alteration Warning-Do not alter of add to the meet original specifications.

  • Page 5: Insulation Checking Procedure

    1-2-2 Insulation Checking Procedure to prevent contact with heating components. Install such elements as they were. Disconnect the attachment plug from the AC outlet and (5) After servicing, always check that the removed screws, turn the power ON. Connect the insulation resistance meter components, and wiring have been installed correctly (500V) to the blades of the attachment plug.

  • Page 6: Reference Information

    2. Reference Information 2-1 Component Descriptions 2-1-1 DVD SANYO HD60 PUH Connector Pin Definition I/F Signals I/O Pin # CD/DVD GND-PD VR-CD VR-DVD LD-CD LD-DVD GND-LD...
  • Page 7 4. Block Diagram Disc MT1369 MT1369 (RF AMP) (Decode/Servo) AuDdio D/A Disc motor unit Laser Driver A TAPI WM8720 Laser Equalizer Buffer Manager pickup Error Gen Demodulator SDRAM Error Correction 1*16MHzX2 Focus & Tracking Video D/A Loading CS4955 Spindle Focus Track Sied Loading...

  • Page 8: Dvd Processor Chip Mtk1389

    2-1-2 DVD Processor Chip MTK1389 Features Super Integration DVD player single chip High performance analog RF amplifier Servo controller and data channel processing MPEG-1/MPEG-2/JPEG video Dolby AC-3/DTS/DVD-Audio Unified memory architecture Versatile video scaling & quality enhancement OSD & Sub-picture 2-D graphic engine High Performance Analog RF Amplifier Programmable fc Dual automatic laser power control...
  • Page 9 Pinout Diagram AGND DVDA YUV0/CIN DVDB DVDC VREF DVDD DACVDDC DVDRFIP RD16 DVDRFIN RD17 RD18 RD19 RD20 RD21 DVDD3 RD22 RD23 DQM2 CDFON DQM3 CDFOP RD24 RD25 DVSS MDI1 RD26 MDI2 DVDD18 LDO2 RD27 LDO1 RD28 SVDD3 RD29 CSO/RFOP RD30 RFLVL/RFON RD31/ASDATA5 SGND...
  • Page 10 PIN DESCRIPTON Symbol Type Description AGND Ground Ground DVDA Analog input AC coupled DVD RF signal input A DVDB Analog input t AC coupled DVD RF signal input B DVDC Analog input AC coupled DVD RF signal input C DVDD Analog input AC coupled DVD RF signal input D DVDRFIP...
  • Page 11 Symbol Type Description IOA4 Inout, pull up Microcontroller address 0/GPIO4 IOA5 Inout,pull up Microcontroller address 0/GPIO5 IOA6 Inout, pull up Microcontroller address 0/GPIO6 IOA7 Inout, pull up Microcontroller address 0/GPIO7 HIGHA0 Inout,pull up Microcontroller address 8 IOA18 nout,pull up Microcontroller address 0/GPIO18 IOA19 Inout,pull up Microcontroller address 0/GPIO19...
  • Page 12 Symbol Type Description DQS0 Output Mask for DRAM input/output byte 4 Output DRAM data 7 DVSS Output DRAM data 6 Output DRAM data 5 DVSS Output DRAM data 4 Output DRAM data 3 DVDD18 Power 1.8V Power Output DRAM data 2 Output DRAM data 1 Output...
  • Page 13 Symbol Type Description DVDD18 Power 1.8V power RD26 output DRAM data 26 DVSS RD25 output DRAM data 25 RD24 output DRAM data 24 DQM3 output Mask for DRAM input/output byte 3 DQM2 output Mask for DRAM input/output byte 2 RD23 output DRAM data 23 RD22...

  • Page 14: 20-Pin, 24-Bit, 192Khz D/A With Volume Control (Wm8766)

    Symbol Type Description PLLVSS IDACEXLP PLLVDD3 Power 3.3V power LPFON Analog output Negative output of the low pass filter LPFIP Analog input Positive input of loop filter amplifier LPFIN Analog input Negative input of loop filter amplifier LPFOP Analog output Positive output of the low pass filter ADCVDD3 Power...

  • Page 15: Serial Eeprom, 2K (256 X 8) (24C02) Or 16 K (2048 X 8) (24C16)

    MODE AVDD MCLK AGND BCLK VOUT3R VOUT3L DVDD VOUT2R DGND VOUT2L VOUT1R DIN1 DIN2 VOUT1L DIN3 ML/I2S VMID MC/WL VREFP MC/DM VREFN MUTE TESTRE F PIN DESCRIPTIONS NAME TYPE DESCRIPTION MODE Digital input Control format selection 0=Software control 1=Hardwar e control MCLK Digital input Master clock:256,384,512 or 768f s ( f s = word clock frequency)

  • Page 16: Bit [1Mx8/512Kx16] Cmos Flash Memory

    * Features Low-Voltage and Standard-Voltage Operation -5.0 (V CC = 4.5V to 5.5V) -2.7 (V CC = 2.7V to 5.5V) -2.5 (V CC = 2.5V to 5.5V) -1.8 (V CC = 1.8V to 5.5V) Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K), 1024 x 8 (8K) or 2048 x 8 (16K) 2-Wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bi-directional Data Transfer Protocol...
  • Page 17 • Command register architecture - Byte/word Programming (7us/12us typical) - Sector Erase (Sector structure 16K-Bytex1, 8K-Bytex2, 32K-Bytex1, and 64K-Byte x15) • Auto Erase (chip & sector) and Auto Program - Automatically erase any combination of sectors with Erase Suspend capability. - Automatically program and verify data at specified address •...

  • Page 19: 512K X 16 Bit X 2 Banks Synchronous Dram (A43L0616)

    2-1-6 512K X 16 Bit X 2 Banks Synchronous DRAM (A43L0616) Features JEDEC standard 3.3V power supply LVTTL compatible with multiplexed address Dual banks / Pulse RAS MRS cycle with address key programs CAS Latency (2,3) Burst Length (1,2,4,8 & full page) Burst Type (Sequential &...
  • Page 21 Block Diagram Pin Descriptions Symbol Name Description System Clock Active on the positive going edge to sample all inputs Chip Select Disables or Enables device operation by masking or enabling all inputs except CLK, CKE and L(U)DQM Masks system clock to freeze operation from the next clock cycle. Clock Enable CKE should be enabled at least one clock + tss prior to new command.

  • Page 22: Product Specifications

    Symbol Name Description VDD/VSS Power Supply/Ground Power Supply: +3.3V±0.3V/Ground Data Output VDDQ/VSSQ Provide isolated Power/Ground to DQs for improved noise immunity. Power/Ground NC/RFU No Connection 3. Product Specifications Playback System DVD Video Video CD (1.1, 2.0, 3.0) SVCD and CVD CDDA CD-ROM with MP3 data PICTURE CD...

  • Page 23: Upgrading System And Changing The Region Code

    4. Upgrading System and Changing the Region Code MTK upgrade: 1. Name upgrade file as "MTK.BIN"(must be in big caps) 2. Record it in a CD-R/W (It can be enclosed a sub-directory which size is about 30M, and the file content can be letter or non used file.) disc Format: (advise to use the tool NERO burning ROM) Disc volume: MEDIATEK, ISO9660 LEVEL1, MODE1, not JOILET.

  • Page 24: Operating Instruction

    5. Operating Instruction Please refer to the User’s Manual for the operating instruction of the system.

  • Page 25: Maintenance & Troubleshooting

    Maintenance & Troubleshooting How to handle discs Disc Compatibility To handle, clean and protect discs Some DVD discs may have special ¡ñ Do not touch the pl aying si de of a requirements f or pla ying, with which ¡ñ disc this player m ay not b e co mpatible.

  • Page 26: Problems And Solutions

    Problems and Solutions If a fault occurs, first check the points listed below before taking the set for repair. If you are unable to remedy a problem by following these hints, consult your dealer or service centre. WARNING: Under no circumstances should you try to repair the set yourself, as this would invalidate the guarantee. Problems Cause Solution...

  • Page 27: Disassembly And Reassembly

    6.Disassembly and Reassembly...

  • Page 28: Troubleshooting

    7.Troubleshooting No power Insert the AC power plug securely into the power outlet. Make sure that the equipment is connected properly. No picture Make sure that the input setting for TV is Video (AV). No sound Make sure that the equipment is connected properly. Distorted sound Make sure that the input settings for the TV and stereo system are correct.

  • Page 29: Electrical Part List

    8. Electrical Part List CO-602 PRODUCT DESIGN PACKAGE LIST Item Name of Components Specification Qty. Location lines A: line L=70mm 24PIN/0.5mm loader to MPEG board 5PIN/2.0mm L=140mm loader to MPEG board 6PIN/2.0mm L=60mm loader to MPEG board 5PIN/2.54mm L=500mm MPEG board L=250mm 4PIN/2.54mm control panel to power board...
  • Page 30 fastening wire Nylon fastening wire fastening wire black,120mm for fastening power supply wire loader sets CO-DJA1389XE+SANYO 5.1CH MPEG MTK1389DE 5.1channel MTK1389DE_5V power supply board DS-600MA DVD loader SANYO DVD loader power supply board CO-DPA118 0320 transformer and TDA1522 CO-DCA602 control panel CO-DCA602 control panel with SCART,Optical and KARAOKE, AV output board...
  • Page 31 plastical bolt cap 5 for power board,3 for output board rubber mat Ö 12*2 hardness 64 hardness 64 rubber mat 19.5*9.5*3.5 metals upper cover CO-602 upper cover siver bottom cover CO-602DZ silver-gray CO-602HBA black rear panel Ö 3*8BAUU 9 for control panel,2 for power botton,1 for bracket bolt bolt Ö...
  • Page 32 gift box carton 1 players in 1 PE 05*80*160mm for power supply wire 05*80*260mm for remote control 0.5*180*260mm for owner's manual 480*580mm pearl cotton B: appendix re mote control remote control batteries 1 set manual Video connection wire 1.5M Audio connection wire 1.5M C: others serial stick...
  • Page 33 glue paper some heat-contracting tube 4mmX15mm Ö22X30mm heat-contracting tube jumper( Ö0.6mm) double-color LED Ö 3mm Components of MPEG board C7,C8,C9,C12,C13,C21,C29,C30,C33 ,C34,C36,C39,C43,C44,C45,C46, CB2,CB4,CB5,CB10,CB12,CB13,CB15, CB16,CB17,CB18,CB19,CB20,CB21, CB22,CB23,CB24,CB25,CB26,CB27, CB28,CB29,CB30,CB31,CB32,CB33, SMD Capacitor 0603 0.1UF 25V +80%-20% X7R CB34,CB35,CB36,CB37,CB40,CB41, CB42,CB43,CB44,CB45,CB47,CB49, CB50,CB51,CB52,CB53,CB54,CB56, CB57,CB58,CB59,CB60,CB61,CB62, CB67,CB68,CB72,CB73,CB74,CB75, CB76,CB85 SMD Capacitor 0603 20PF 25V ±5% NPO SMD Capacitor 0603 33PF 25V ±5% NPO...
  • Page 34 SMD Capacitor 0603 1000PF 25V ¡À5% NPO C5,C6 SMD Capacitor 0603 1500PF 25V¡À10% X7R SMD Capacitor 0603 2200PF 25V ¡À10% X7R C3,C74 SMD Capacitor 0603 0.015uF 25V¡À10% X7R SMD Capacitor 0603 0.033uF 25V¡À10% X7R SMD Capacitor 0603 0.047uF 25V¡À10% X7R C17,C18 SMD Capacitor 0805 0.47uF 25V¡À10% X7R...
  • Page 35 0603 33E*4±5% SMD resistor 0603 0E±5% R186,R88 SMD resistor SMD resistor 0603 1E±5% R22, SMD resistor 0805 1E±5% R42,R43,R44,R45 SMD resistor 0603 10E±5% R23,R24,R120,R126,R39,R41, R63,R64,R65,R66, ,R138, SMD resistor 0603 33E±5% R139,R142,R143,R144,R145 SMD resistor 0603 38E±1% SMD resistor 0603 75E±1% R96,R213,R73,R75,R81,R84,R94, SMD resistor 0603 680E±5% R68,R69,...
  • Page 36 jack 14PIN/2.0MM jack 24PIN/0.5MM SFHD-60(bottom) SDRAM HY57V161610DTC-7 TSOP 16M U7,U8 SC-62 BA5954 SOT-8 BA6208F MT1389 256PIN 5.1CH WM8766 5.1CH AUDIO DAC 28PIN SOP U14,WM8766 SOP DA1131 2CH AUDIO DAC 14PIN SOP U13,WM8714 SOP M X29F800- 70, 8M F LA SE TSOP ( 5V) U10 or U11(29F800TA-70) EEPROM 24C02 ST-S08 ( 5V) AZ1117H_1.8V OUTPUT...
  • Page 37 Electrolytic capacitor 470UF 25V +/-20% 8X12mm C16,C18 Electrolytic capacitor 100UF 50V +/-20% 8X14mm C6,C7 Electrolytic capacitor 47UF 400V +/-20% 22X23mm Electrolytic capacitor( 1000uF 10V +/-20% C20,C21 high frequency) Safety Regulation capacitor 680UF 400V +/-20% Y1 2200UF 400V +/-20% Y1 UL Safety Regulation capacitor BC3,BC4 10mm...
  • Page 38 Common-mode Inductor >10mH R<4.5E CO-BYBYDAP118A/B/C Transformer KBEC28-21178 Carbon Film Resistor 2W 27K +/-5% Carbon Film Resistor 1W 1E +/-5% Carbon Film Resistor 1/4W 10K +/-5% R12,R13 Carbon Film Resistor 1/4W 300E +/-5% Carbon Film Resistor 1/4W 3K +/-5% Carbon Film Resistor 1/4W 470E +/-5% Carbon Film Resistor 1/4W 4.7K +/-5%...
  • Page 39 Components of Control Panel Carbon Film Resistor 1/4W 10E +/-10% R1? R9 Carbon Film Resistor 1/4W 10K +/-10% R2~R4? R6~R8? R10 Carbon Film Resistor 1/4W 56K +/-10% Ceramic capacitor 50V104 +80/-20% Electrolytic capacitor 47U F 20% C1,C2 Diode 1N4148 Axial 0.4 D1,D2,D3,D4,D5 16312 QFP44 (AD16312) SAMSUNG...

  • Page 40: Block Diagram

    9. Block Diagram...

  • Page 42: Circuit Diagrams

    10. Circuit Diagrams Control Part Index 3. SDRAM & FLASH 4. Servo-DSP MPEG Video Output 6. Audio Output 7.Power Part...
  • Page 43 Control Part 100uF/16V REM1 Sg14/Gr9 Sg13/Gr10 Sg12/Gr11 Sg11 Sg10 DOUT 6PIN 6312 Sg6/KS6 Sg5/KS5 Sg4/KS4 LED4 Sg3/KS3 LED3 Sg2/KS2 LED2 Sg1/KS1 LED1 4148 4148 COSMIC P DATA AD16312 LED1 -27V 4PIN C3_1 47uF/50V -27V...
  • Page 44 INDEX COMMOND89_HD60_V2 MT1389E (LQFP256) DVD Demo Board for Sanyo Slim HD60 PUH INDEX & POWER, RESET RF, SERVO & MPEG MT1389E MEMORY - SDRAM, FLASH/EEPROM History Date VIDEO OUT The original released. 2003.6.15 Change CE11 from 10uF to 100uF AUDIO DAC WMA8746&WMA8720 AND AUDIO OUT 2003.7.17 Change C3 from C to 2200pF Change C2 from 0.1uF to C...
  • Page 45 SDRAM & FLASH SD33 CB45 CB46 CB47 CB50 CB51 CB44 CB48 CB49 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF DQ16 0.1uF DQ17 DQ18 DQ19 DQ20 SD33 DQ21 DQ22 DQ23 CB52 CB57 CB53 CB54 CB55 CB56 DQ24 CE26 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF...
  • Page 46 4.Servo-DSP MPEG JITFO JITFN 390pF Change R4,R5,R6,R8,R12 from ik to R DV33 Remove 750k 74H04 DACVDD3 MUTE RFV33 2200pF R124 CB17 CE15 Add CE1 10uF ADIN CB16 0.1uF 10uF/16V 680k 0.1uF 27MHz 33pF 33pF DV33 2.7uH 10uF/16V 680k 2200pF Change C3 from C to 2200pF Change C2 from 0.1uF to C Change R10,r15 from 750k to 680k 150k...
  • Page 47 5.Video Output Add the low resistance output circuit +5VV +5VV 1N4148 1N4148 1.8uH 1.8uH 75 1% 1N4148 47pF 47pF 1N4148 75 1% 47pF 47pF Y[1..6] Y[1..6] [ 2 ] VSYNC# VSYNC# [ 2 ] HSYNC# HSYNC# [ 2 ] [ 5 ] [ 5 ] [ 5 ] [ 5 ]...
  • Page 48 6.Audio Output DV33 [ 1 ] DV33 [ 1 ] VCC_AUDIO [ 1 ] VCC_AUDIO [ 1,2,3,5 ] ASPDIF ASPDIF [ 2 ] ASDAT[0..2] [ 4 ] [ 2 ] ASDAT[0..2] ACLK [ 4 ] [ 2 ] ACLK [ 4 ] ABCK +3.3VDD [ 2 ]...
  • Page 49 7.Power Part -21V DGND DGND -21V 220UF/16V F(-) F(+) 100P BCN5 POW SW1 D1 1N4007 222M 103/1KV 27K/2W HER105 T1.6A L250V 220V 265V BCN1 D2 1N4007 68uF/450v S+5V 222M BEAD SGND SGND 1N4007 SGND SGND 100uF/50v PH-33D C12V S+12V 470uF/16V HER108 100P 0.1uF/275v...

  • Page 50: Wiring Diagram

    11. Wiring Diagram CO-602 (CUSTOMER MODEL): AV OUTPUT BOARD -12V +12V AGND VGND MIC BOARD MPEG BOARD -27V FRONT PANEL - Cosmic Digital Technology Limited -...

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