BBK DV727S Service Manual
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BBK DV727S Service Manual

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SERVICE MANUAL
DV727S

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Summary of Contents for BBK DV727S

  • Page 1 SERVICE MANUAL DV727S...

  • 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 10 11 12 POWER switch Push button Slot flap for card Disc tray IR SENSOR OPEN/CLOSE button PREV button Display window PLAY button PAUSE button Power indicator STOP button NEXT button...

  • 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 IC VIPER22 PIN.5 WAVEFORM DIAGRAM...

  • Page 13: Lv160Be

    8. 29LV160BE 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 SUBSIDIARY BOARD...
  • Page 27 SUBSIDIARY BOARD...
  • Page 28 POWER BOARD SCHEMATIC DIAGRAM...
  • Page 29 POWER BOARD SCHEMATIC DIAGRAM...
  • Page 30 OK SCHEMATIC DIAGRAM...
  • Page 31 OK SCHEMATIC DIAGRAM...
  • Page 32 MAIN BOARD...
  • Page 33 MAIN BOARD...
  • Page 34 MAIN BOARD...
  • Page 38 4-IN-1 CARD + USB BOARD...
  • Page 39 4-IN-1 CARD + USB BOARD...

  • Page 40: Spare Parts List

    10. SPARE PARTS LIST DV727S MATERIAL LIST 1. POWER BOARD MATERIAL CODE MATERIAL NAME SPECIFICATIONS UNIT UANTI LOCATION 2100010 CONNECTION CORDS JP502,JP510,JP519,JP520 Φ0.6 SHAPED 5mm JP501,JP509,JP514,JP516,JP 2100003 CONNECTION CORDS Φ0.6 SHAPED7.5mm 2100004 CONNECTION CORDS Φ0.6 SHAPED10mm JP511 0000273 CARBON FILM RESISTOR 1/4W33Ω±5% SHAPED10...
  • Page 41 0090009 SMD RESISTOR 1/16W 330Ω ±5% 0603 R601 0090012 SMD RESISTOR 1/16W 560Ω ±5% 0603 R604 0090014 SMD RESISTOR 1/16W 1K ±5% 0603 R608,R625,R626 0090018 SMD RESISTOR 1/16W 3.3K ±5% 0603 R630 0090224 SMD RESISTOR 1/16W 3.9K ±5% 0603 R631, R632 0090184 SMD RESISTOR 1/16W 4.3K ±5% 0603...
  • Page 42 0620076 LIGHT RADIATION DIODE 3B3HC COLORLESS WITH BLUE LED402 0090006 SMD RESISTOR 1/16W 75Ω ±5% 0603 R404 0090181 SMD RESISTOR 1/16W 100Ω ±5% 0603 R407,R411 0090014 SMD RESISTOR 1/16W 1K ±5% 0603 R408~R410 0310597 SMD CAPACITOR 50V 151±20% 0603 C409~C411 0090020 SMD RESISTOR 1/16W 5.1K ±5% 0603...
  • Page 43 1632076 A997-1 6. DECODE BOARD MATERIAL CODE MATERIAL NAME SPECIFICATIONS UNIT UANTI LOCATION R222,R245,R247,R248,R251, R257,R258,R297~R299,R318, 90001 SMD RESISTOR 1/16W 0Ω ±5% 0603 R342,R707,R718~R722,R725, R726,R2159,R269,R232,R275 ,R272 0090272 SMD RESISTOR 1/16W1Ω±5% 0603 R304~R307,R321 0090002 SMD RESISTOR 1/16W 2.2Ω ±5% 0603 R706 0090106 SMD RESISTOR 1/16W 4.7Ω...
  • Page 44 0310190 SMD CAPACITOR 50V 27P ±5% NPO 0603 C275,C276 C262~C265,C289,C290,C292, C293,C295,C296,C298,C299, 0310045 SMD CAPACITOR 50V 47P ±5% NPO 0603 C2101,C2102,C2104,C2105,C C206,C733,C734,C2111,C211 310047 SMD CAPACITOR 50V 101 ±5% NPO 0603 4,C2117,C2120,C2123,C2126, C288 0310048 SMD CAPACITOR 50V 151 ±5% NPO 0603 C304,C306 0310051 SMD CAPACITOR 50V 331 ±5% NPO 0603...
  • Page 45 7800509 TRIODE S8050D V307,V308 7800499 TRIODE S8550D V306,V309 0780085 SMD TRIODE 8050D V701,V702 780062 SMD TRIODE 9014C V310,Q213 0780197 SMD TRIODE C1815 Q205~Q210,Q212 0780198 SMD TRIODE 2SA1015 Q211,Q218,Q219 780040 SMD TRIODE 3904(100-300) SOT-23 V305 0780193 SMD TRIODE 2SK3018 V303,V304 0780115 SMD TRIODE 2SB1132 V301,V302...

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