BBK DV723S-2 Service Manual
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BBK DV723S-2 Service Manual

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SERVICE MANUAL
DV723S-2

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Summary of Contents for BBK DV723S-2

  • Page 1 SERVICE MANUAL DV723S-2...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS PREVENTION OF ELECTRO STATIC DISCHARGE(ESD)TO ELECTROSTATICALLY SENSITIVE(ES)DEVICES CONTROL BUTTON LOCATIONS AND EXPLANATIONS PREVERTION OF STATIC ELECTRICITY DISCHARGE ASSEMBLING AND DISASSEMBLING THE MECHANISM UNIT OPTICAL PICKUP UNIT EXPLOSED VIEW AND PART LIST BRACKET EXPLOSED VIEW AND PART LIST MISCELLANEOUS ELECTRICAL CONFIRMATION VIDEO OUTPUT (LUMINANCE SIGNAL) CONFIRMATION...

  • Page 3: Safety Precautions

    1. SAFETY PREAUTIONS 1.1 GENERAL GUIDELINES 1. When servicing, observe the original lead dress. if a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barrier, insulation papers shields are properly installed.

  • Page 4: Control Button Locations And Explanations

    Front Panel Illustration POWER switch STOP button IR SENSOR MIC jack Disc tray Display window Headphone jack PLAY/PAUSE button OPEN/CLOSE button SD/MS/MMC Soket...

  • Page 5: Prevention Of Static Electricity Discharge

    4.PREVENTION OF STATIC ELECTRICITY DISCHARGE The laser diode in the traverse unit (optical pickup)may brake down due to static electricity of clothes or human body. Use due caution to electrostatic breakdown when servicing and handling the laser diode. 4.1.Grounding for electrostatic breakdown prevention Some devices such as the DVD player use the optical pickup(laser diode)and the optical pickup will be damaged by static electricity in the working environment.Proceed servicing works under the working environment where grounding works is completed.

  • Page 6: Assembling And Disassembling The Mechanism Unit

    5. Assembling and disassembling the mechanism unit 5.1 Optical pickup Unit Explosed View and Part List Pic (1)
  • Page 7 Materials to Pic (1) PARTS CODE PARTS NAME Q ty 14692200 SF-HD60 1EA0311A06300 ASSY, CHASSIS, COMPLETE 1EA0M10A15500 ASSY, MOTOR, SLED 1EA0M10A15501 ASSY, MOTOR, SLED 1EA2451A24700 HOLDER, SHAFT 1EA2511A29100 GEAR, RACK 1EA2511A29200 GEAR, DRIVE 1EA2511A29300 GEAR, MIDDLE, A 1EA2511A29400 GEAR, MIDDLE, B 1EA2744A03000 SHAFT, SLIDE 1EA2744A03100...

  • Page 8: Bracket Explosed View And Part List

    5.2 Bracket Explosed View and Part List Pic (2) Materials to Pic(2) 1.bracket 14. front silicon rubber 2.belt 15. Back silicon rubber 3.screw 16. Pick-up 4.belt wheel 17. Pick-up 5.gearwheel 18. switch 6.iron chip 19. Five-pin flat plug 7. Immobility mechanism equipment 20.

  • Page 9: Miscellaneous

    5.3 MISCELLANEOUS 5.3.1 Protection of the LD(Laser diode) Short the parts of LD circuit pattern by soldering. 5.3.2 Cautions on assembly and adjustment Make sure that the workbenches,jigs,tips,tips of soldering irons and measuring instruments are grounded,and that personnel wear wrist straps for ground. Open the LD short lands quickly with a soldering iron after a circuit is connected.

  • Page 10: Electrical Confirmation

    6.Electrical Confirmation 6.1. Video Output (Luminance Signal) Confirmation DO this confirmation after replacing a P.C.B. Measurement point Mode Disc Color bar 75% DVDT-S15 Video output terminal PLAY(Title 46):DVDT-S15 PLAY(Title 12):DVDT-S01 DVDT-S01 Measuring equipment,tools Confirmation value 200mV/dir,10 sec/dir 1000mVp-p±30mV Purpose:To maintain video signal output compatibility. 1.Connect the oscilloscope to the video output terminal and terminate at 75 ohms.

  • Page 11: Video Output(Chrominance Signal) Confirmation

    6.2 Video Output(Chrominance Signal) Confirmation Do the confirmation after replacing P.C.B. Measurement point Mode Disc Color bar 75% DVDT-S15 Video output terminal PLAY(Title 46):DVDT-S15 PLAY(Title 12):DVDT-S01 DVDT-S01 Measuring equipment,tools Confirmation value Screwdriver,Oscilloscope 200mV/dir,10 sec/dir 621mVp-p±30mV Purpose:To maintain video signal output compatibility. 1.Connect the oscilloscope to the video output terminal and terminate at 75 ohme.

  • Page 12: Mpeg Board Check Waveform

    7.MPEG BOARD CHECK WAVEFORM 7.1 27MHz WAVEFORM DIAGRAM 7.2 ICVIPER22 PIN.2 WAVEFORM DIAGRAM...

  • Page 13: Am29Lv160D

    8. Am29LV160D 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory DISTINCTIVE CHARACTERISTICS Single power supply operation Embedded Algorithms — Full voltage range: 2.7 to 3.6 volt read and write — Embedded Erase algorithm automatically operations for battery-powered applications preprograms and erases the entire chip or any combination of designated sectors...

  • Page 14: Block Diagram

    PRODUCT SELECTOR GUIDE Family Part Number Am29LV160D Speed Option Voltage Range: V = 2.7–3.6 V -120 Max access time, ns (t Max CE# access time, ns (t Max OE# access time, ns (t Note: See “AC Characteristics” for full specifications. BLOCK DIAGRAM –...
  • Page 15 CONNECTION DIAGRAMS BYTE# DQ15/A-1 DQ14 DQ13 DQ12 Standard TSOP RESET# DQ11 RY/BY# DQ10 BYTE# DQ15/A-1 DQ14 DQ13 DQ12 RESET# Reverse TSOP DQ11 RY/BY# DQ10...
  • Page 16 CONNECTION DIAGRAMS RESET# BYTE# DQ15/A-1 DQ14 DQ13 DQ10 DQ12 DQ11 FBGA Top View, Balls Facing Down BYTE# DQ15/A-1 DQ14 DQ13 RESET# DQ12 RY/BY# DQ10 DQ11 Special Handling Instructions Flash memory devices in FBGA packages may be damaged if exposed to ultrasonic cleaning methods. Special handling is required for Flash Memory products The package and/or data integrity may be compromised in FBGA packages.
  • Page 17 PIN CONFIGURATION LOGIC SYMBOL A0–A19 = 20 addresses DQ0–DQ14 = 15 data inputs/outputs A0–A19 16 or 8 DQ15/A-1 = DQ15 (data input/output, word mode), DQ0–DQ15 A-1 (LSB address input, byte mode) (A-1) BYTE# = Selects 8-bit or 16-bit mode = Chip enable = Output enable = Write enable RESET#...

  • Page 18: Hy57V641620Hg

    HY57V641620HG 4 Banks x 1M x 16Bit Synchronous DRAM 8.1 HY57V641620HG DESCRIPTION The Hyundai HY57V641620HG is a 67,108,864-bit CMOS Synchronous DRAM, ideally suited for the main memory applications which require large memory density and high bandwidth. HY57V641620HG is organized as 4banks of 1,048,576x16. HY57V641620HG is offering fully synchronous operation referenced to a positive edge of the clock.
  • Page 19 HY57V641620HG PIN CONFIGURATION DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 54pin TSOP II 400mil x 875mil 0.8mm pin pitch LDQM UDQM /CAS /RAS A10/AP PIN DESCRIPTION PIN NAME DESCRIPTION The system clock input. All other inputs are registered to the SDRAM on the Clock rising edge of CLK Controls internal clock signal and when deactivated, the SDRAM will be one...

  • Page 20: Functional Block Diagram

    HY57V641620HG FUNCTIONAL BLOCK DIAGRAM 1Mbit x 4banks x 16 I/O Synchronous DRAM Self refresh logic Internal Row & timer counter 1Mx16 Bank 3 1Mx16 Bank 2 Row active Decoders 1Mx16 Bank 1 1Mx16 Bank 0 Memory refresh Cell Array Column Column Active UDQM...

  • Page 21: Mt1389

    8.2 MT1389 MT1389 Progressive-Scan DVD Player SOC Specifications are subject to change without notice MediaTek MT1389 is a DVD player system-on-chip (SOC) which incorporates advanced features like high quality TV encoder and state-of-art de-interlace processing. The MT1389 enables consumer electronics manufacturers to build high quality, cost-effective DVD players, portable DVD players or any other home entertainment audio/video devices.
  • Page 22 MT1389 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE General Feature List 1024-bytes on-chip RAM Super Integration DVD player single chip Up to 4M bytes FLASH-programming interface High performance analog RF amplifier Supports 5/3.3-Volt. FLASH interface Servo controller and data channel processing Supports power-down mode MPEG-1/MPEG-2/JPEG video Supports additional serial port...
  • Page 23 MT1389 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Audio Effect Processing TV Encoder Dolby Digital (AC-3)/EX decoding Six 108MHz/12bit DACs DTS/DTS-ES decoding Support NTSC, PAL-BDGHINM, PAL-60 MLP decoding for DVD-Audio Support 525p, 625p progressive TV format MPEG-1 layer 1/layer 2 audio decoding Automatically turn off unconnected channels MPEG-2 layer1/layer2 2-channel audio Support PC monitor (VGA)

  • Page 24: Schematic & Pcb Wiring Diagram

    9. SCHEMATIC & PCB WIRING DIAGRAM FRONT SCHEMATIC DIAGRAM...
  • Page 25 FRONT SCHEMATIC DIAGRAM...
  • Page 26 FRONT SCHEMATIC DIAGRAM...
  • Page 27 FRONT SCHEMATIC DIAGRAM...
  • Page 28 POWER BOARD SCHEMATIC DIAGRAM...
  • Page 29 POWER BOARD SCHEMATIC DIAGRAM...
  • Page 30 OK SCHEMATIC DIAGRAM...
  • Page 31 OK SCHEMATIC DIAGRAM...
  • Page 32 OUTPUT BOARD SCHEMATIC DIAGRAM...
  • Page 33 OUTPUT BOARD SCHEMATIC DIAGRAM...
  • Page 34 OUTPUT BOARD SCHEMATIC DIAGRAM...
  • Page 35 OUTPUT BOARD SCHEMATIC DIAGRAM...
  • Page 36 MIAN SCHEMATIC DIAGRAM...
  • Page 37 MIAN SCHEMATIC DIAGRAM...
  • Page 38 MIAN SCHEMATIC DIAGRAM...
  • Page 39 MIAN SCHEMATIC DIAGRAM...
  • Page 40 MIAN SCHEMATIC DIAGRAM...

  • Page 41: Spare Parts List

    10. SPARE PARTS LIST DV723S-2 MATERIAL LIST 1. POWER BOARD MATERIAL CODE MATERIAL NAME SPECIFICATIONS UNIT QUANTITY LOCATION 0000273 CARBON FILM RESISTOR R505 1/4W33¦ ¸ ±5% SHAPED 10 0000274 CARBON FILM RESISTOR 1/4W47¦ ¸ ±5% SHAPED 10 R515 0000362 CARBON FILM RESISTOR 1/4W220¦...

  • Page 42: Ir Sensor

    0780049 TRIODE S8550D Q501 1000022 POWER GRID FILTER L501 JLB1153 33uH +¡ Þ -0% SWITCHING POWER 0460422 BCK-28-519S T501 TRANSFORMER CN501 (AGND,DET,OKA,AG 1940044 SOCKET 9P 2.0mm ND,+9V,-9V, GND,+5V,GND) CN503 (NEAR JP511, 1940027 SOCKET 2P 2.0mm LED+5V,GND) 1940077 SOCKET 11P 2.0mm CN502 1940045 SOCKET...
  • Page 43 LIGHT TOUCH RESTORE 1340003 HORIZONTAL 6×6×1 K401¡ « K403 SWITCH 150×6×0.1 SINGLE-SIDED BETWEEN LED AND 5232926 ALUMINUM FOIL STICKER WITH GLUE ON THE BACK RADIATION SCREEN CONNECT VFD 5233018 SOFT SPONGE SPACER 10×6×16 DOUBLE-FACED, HARD PCS SCREEN AND FRONT PANEL PCB CONNECT IR 5232919 SOFT SPONGE SPACER...
  • Page 44 0000385 CARBON FILM RESISTOR 1/6W3.9K±5% SHAPED 7.5 R629 0090224 SMD RESISTOR 1/16W 3.9K ±5% 0603 R630 0090020 SMD RESISTOR 1/16W 5.1K ±5% 0603 R613 0000134 CARBON FILM RESISTOR 1/6W5.1K±5% SHAPED 7.5 R611 R606,R610,R618,R635, 0090023 SMD RESISTOR 1/16W 10K ±5% 0603 R636 0090026 SMD RESISTOR...
  • Page 45 0090001 SMD RESISTOR 1/16W 0Ω ±5% 0603 L711,L712,C717~C722 0700007 SMD DIODE 1N4148 D701,D702 0700001 SMD DIODE LS4148 D701,D702 0700002 SMD DIODE LL4148 D701,D702 SMD VOLTAGE 0700004 5.1V 1/2W ZD701~ZD704 REGULATOR DIODE 1563385 7969-5 0000171 CARBON FILM RESISTOR 1/4W68Ω±5% R703 0000181 CARBON FILM RESISTOR 1/4W220Ω±5% R701...
  • Page 46 7. DECODE BOARD MATERIAL CODE MATERIAL NAME SPECIFICATIONS UNIT UANTIT LOCATION C2119,C2128,C2131,L210 ~L215,R201~R204,R212, R226,R228,R234,R236,R2 45,R247,R222,R251,R255, 0090001 SMD RESISTOR 1/16W 0Ω ±5% 0603 R257,R258,R282,R298,R2 99,R303,R318,R331,R215 9,R297,R271,R262,R269, R279,R346 R233,R261,R270,R273,R2 0090006 SMD RESISTOR 1/16W 75Ω ±5% 0603 74,R276,R280 0000375 CARBON FILM RESISTOR 1/4W2.2Ω±5% R326 0090272 SMD RESISTOR...
  • Page 47 C262~C265,C289,C290,C 292,C293,C295,C296,C29 0310045 SMD CAPACITOR 50V 47P ±5% NPO 0603 8,C299,C2101,C2102,C21 04,C2105 C233,C2111,C2114,C2117 0310047 SMD CAPACITOR 50V 101 ±5% NPO 0603 ,C2120,C2123,C2126,C20 6,C288 0310051 SMD CAPACITOR 50V 331 ±5% NPO 0603 C212,C213 0310048 SMD CAPACITOR 50V 151 ±5% NPO 0603 C304,C306 C207,C211,C214,C216,C2 17,C224,C226~C231,C234...
  • Page 48 0700007 SMD DIODE 1N4148 VD201,VD205~VD223 0700001 SMD DIODE LS4148 VD201,VD205~VD223 0700002 SMD DIODE LL4148 VD201,VD205~VD223 0780029 TRIODE C8050 V307,V308 0780030 TRIODE 8550C(120-200) TO-92 V306,V309 0780062 SMD TRIODE 9014C V310 0780033 TRIODE 9015C(200-600) TO-92 Q204 0780020 TRIODE C1815Y Q212 0780197 SMD TRIODE C1815 Q205~Q210 0780043...

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