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BBK DV975S Service Manual

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SERVICE MANUAL
DV975S

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Summary of Contents for BBK DV975S

  • Page 1 SERVICE MANUAL DV975S...

  • Page 3: Safety Preautions

    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: Play/Pause Button

    Front Panel Illustration POWER switch STOP button Display window Door IR SENSOR PLAY/PAUSE button OPEN/CLOSE 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 5. Assembling and disassembling the mechanism unit...
  • Page 10 5.1 MISCELLANEOUS 5.1.1 Protection of the LD(Laser diode) Short the parts of LD circuit pattern by soldering. 5.1.2 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 11: 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 12 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 13: Mpeg Board Check Waveform

    7.MPEG BOARD CHECK WAVEFORM 7.1 27MHz WAVEFORM DIAGRAM 7.2 IC NCP1200P60 PIN.5 WAVEFORM DIAGRAM...
  • Page 14 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 15: Product Selector Guide

    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 16: Connection Diagrams

    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 17 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 18: Pin Configuration

    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 19 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 20: Pin Description

    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 21: 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 22: Key Features

    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 23 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 24 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 25 9. SCHEMATIC & PCB WIRING DIAGRAM FRONT SCHEMATIC DIAGRAM...

  • Page 26: Front Schematic Diagram

    FRONT SCHEMATIC DIAGRAM...

  • Page 27: Power Board Schematic Diagram

    POWER BOARD SCHEMATIC DIAGRAM...
  • Page 28 POWER BOARD SCHEMATIC DIAGRAM...
  • Page 29 SUBSIDIARY PANEL 1 SCHEMATIC DIAGRAM...
  • Page 30 SUBSIDIARY PANEL 1 SCHEMATIC DIAGRAM...
  • Page 31 SUBSIDIARY PANEL 2 SCHEMATIC DIAGRAM...
  • Page 32 SUBSIDIARY PANEL 2 SCHEMATIC DIAGRAM...
  • Page 33 SUBSIDIARY PANEL 3 SCHEMATIC DIAGRAM...
  • Page 34 SUBSIDIARY PANEL 3 SCHEMATIC DIAGRAM...
  • Page 35 OUTPUT BOARD SCHEMATIC DIAGRAM...
  • Page 36 OUTPUT BOARD SCHEMATIC DIAGRAM...
  • Page 37 OUTPUT BOARD 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 DV975s MATERIAL LIST 1. DECODE BOARD MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION R201~R204,R212,R228,R234,R24 5,R247,R222,R251,R255,R297~R2 SMD RESISTOR 1/16W 0Ω ±5% 99,R303,R318,R331,R2159,R2165, R2166 ,R257,R258 SMD RESISTOR 1/16W 75Ω ±5% R233 CARBON FILM RESISTOR 1/4W2.2Ω±5% R326 SMD RESISTOR 1/16W1Ω±5% R304~R307,R321,R340 SMD RESISTOR 1/16W 10Ω...
  • Page 42 C207,C211,C214,C216,C217,C224 ,C226~C231,C234~C239,C241~C2 54,C256~C259,C267,C270~C274, 34.1 SMD CAPACITOR 25V 104 +80%-20% 0603 C279,C281,C301~C303,C305,C30 9,C311,C312,C2160,C2162,C2163, C2167,C2168,C2170,C2171,C2173 ~C2175 SMD CAPACITOR 16V 105 +80%-20% 0603 C201~C204,C221,C240 SMD CAPACITOR 50V 102 ±10% 0603 C278,C223 SMD CAPACITOR 50V 152 ±10% 0603 C215 SMD CAPACITOR 50V 222 ±10% 0603 C307,C310 SMD CAPACITOR 50V 153 ±10% 0603...
  • Page 43 SOCKET 4P 2.0mm XS304 CABLE SOCKET 6P 1.0mm SMD WITH CLASP XS303 CABLE SOCKET 24P 0.5mm SMD WITH CLASP XS301 2. MAIN PANEL MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION CONNECT IR SENSOR WITH SOFT SPONGE 12×6×5 DOUBLE-FACED, HARD PCB 1PCS SMD DIODE 1N4148 D401~D402 D16312GB QFP...
  • Page 44 CARBON FILM RESISTOR 1/4W1K±5% SHAPED 10 R507,R513 CARBON FILM RESISTOR 1/4W100¦ ¸ ±5% SHAPED10 R521 METAL FILM RESISTOR 1/4W3.3K±1% SHAPED 10 R509 METAL FILM RESISTOR 1/4W12K±1% SHAPED 10 R518 METAL FILM RESISTOR 1/4W10K±1% R508 METAL OXIDE FILM RESISTO1W1¦ ¸ ±5% SHAPED FLAT 15×7 R502 CARBON FILM RESISTOR 1/4W30K±5% SHAPED 10...
  • Page 45 SOCKET 8P 2.0mm CN503 SOCKET 6P 2.5mm CN502 CONNECTION CORDS ¦ µ 0.6 SHAPED 12.5mm JP501 CONNECTION CORDS JP502~JP509,D516 ¦ µ 0.6 SHAPED 10mm HEAT RADIATION BOARD 11×15×25 BLACK AB905 U505 FOR HEAT RADIATION FIXED HEAT RADIATION TAPPING SCREW BT 3×8 BLACK BOARD FUSE T1.6AL 250V WITH PIN...
  • Page 46 PORCELAIN CAPACITOR 50V 122 ±10% 5mm C749 C710,C717,C718,C735,C736,C737 SMD CAPACITOR 50V 104 +80%-20% 0603 ,C738,C739,C765,C766,C767,C76 8,C769 ,C772 PORCELAIN CAPACITOR 50V 104 +80%-20% 5mm C734 CD11C 16V10U±20%4×7 1.5 TC707~TC722 CD11 16V47U±20%5×11 2 TC725,TC726 CD11 16V220U±20%6×12 2.5 TC724 L701~L703,L707,L708,L710~L712,L7 SMD MAGNETIC BEADS FCM1608K-221T05 25,L726 L727 MAGNETIC BEADS INDUCTOR RH354708...
  • Page 47 6. SUBSIDIARY BOARD 2 MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION RADIATION DIODE 3B3HC COLORLESS WITH BLU LEDA01 A1000-1 FLAT CABLE 2P 210 2.0 1 SOCKET RED, BLAC XSA01 7. SUBSIDIARY BOARD 3 MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION RADIATION DIODE 3B3HC COLORLESS WITH BLU LEDB01 B1000-1 FLAT CABLE...

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