BBK BBK931S Service Manual
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BBK BBK931S Service Manual

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SERVICE MANUAL
BBK931S

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  • Page 1 SERVICE MANUAL BBK931S...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS GENENRAL GUIDELINES PREVENTION OF ELECTRO STATIC DISCHARGE(ESD)TO ELECTROSTATICALLY SENSITIVE(ES) DEVICES PRECAUTION OF LASTER DIODE GENERAL DESCRIPTION PREVENTION OF STATIC ELECTRICITY DISCHARGE GROUNDING FOR ELECTROSTATIC BREAKDOWN PREVENTION 5.1.1 WORKTABLE GROUNDING 5.1.2 HUMAN BODY GROUNDING 5.1.3 HANDING OF OPTICAL PICKUP HANDING PRECAUTIONS FOR TRAVERSE UNIT(OPTICAL PICKUP) ASSENBLING AND DISASSEMBLING THE MECHANISM UNIT DISASSEMBLY PROCEDURE...

  • Page 3: Safety Precautions

    1.SAFETY PRICAUTIONS 1.1 GENERAL GUIDELINES 1.When servicing,observe the original lead dress.ifa 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 bamiers,insulation papers shields are properly installed.

  • Page 4: Precaution Of Laster Diode

    3. Precaution of L aster Diode...

  • Page 7: Prevention Of Static Electricity Discharge

    5.PREVERTION 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. 5.1.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 8: Assenbling And Disassembling The Mechanism Unit

    6.ASSEMBLING AND DISASSENBLING THE MECHANISM UNIT 6.1Disassembly Procedure 6.2 Terminal P.C.B. 1.Unscrew the screws. 2.Remove the solders. 3.Remove the connectors...

  • Page 9: Clamp Plate Unit

    6.3 Clamp Plate Unit 1.Spread the stopper with hand to silde the tabs and remove the clamp plate unit. 6.4 Tray 1.Lift the tray.

  • Page 10: Traverse Block

    6.5 Traverse Block 1.Lift the traverse block while spreading the hook of the mechanical chassis chassis unit. 2.Disengage the tabs from the holes of the mechanical chassis unit. 6.6. Traverse Gear 1.Disengage the tabs from the traverse gear 2.Remove the traverse gears B and C.

  • Page 11: Optical Pickup Unit

    6.7. Optical Pickup Unit 1. Unscrew the screws. 2.Remove the spring holders and the springs. 3.Pull out of the drive shaft and guide shaft.

  • Page 12: Precautions In Optical Pickup Replacement

    6.7.1. Precautions in optical pickup replacement The optical pickup can be damaged by static electricity from you body.Be sure to take static electricity countermeasures when working around the optical pickup.(Refer to the related page in this Manual about the countermeasures. 1.Do not touch laser diode,actuator and their peripheries.

  • Page 13: Disassembling The Middle Chassis

    6.8. Disassenbling the Middle Chassis 1.Remove the holders pins. 2.Remove the tab. 3.It lifts while pulling it in the direction of the arrow. 6.9. Disassenbling the Traverse Gear A 1.Remove the traverse gear A.

  • Page 14: Disassembling The Spindle Motor Unit

    6.10. Disassembling the Sprindle Motor Unit 1.Remove the floating rubbers. 7. Electrical Confirmation 7.1. 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...

  • Page 15: Video Output(Chrominance Signal)Confirmation

    7.2. 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 16: Mpeg Check Waveform

    8. MPEG BOARD CHECK WAVEFORM 1.X204 WAVEFORM DIAGRAM 2.ZIVA-4.1 PIN.173/STRMCS WAVEFORM DIAGRAM...
  • Page 17 3.IC5L0380R PIN.2 WAVEFORM DIAGRAM 4.VIDEO OUPUT WAVEFORM DIAGRAM...
  • Page 18 5.ZIVA-4.1PIN.172/DVDREQ WAVEFORM DIAGRAM...

  • Page 19: Ic Block Diagram & Description

    IC BLOCK DIAGRAM & DESCRIPTION ES4428 PINOUT VC33 VC33 EAUX4[4]/HA2 DSCK AUX0 AUX1 DCS0# IOW#/AUX2 VC33 VC33 DCS1# IOR#/AUX3 DB15 AUX4 DB14 AUX5 DB13 AUX6 DB12 AUX7 VC33 LOE# DB11 VC25 DB10 LCS0# LCS1# LCS2# LCS3# VC25 ES4428 VC33 208-Pin PQFP Package VC33 DRAS2#/DBANKSEL1 DRAS1#/DBANKSEL0...
  • Page 20 PRELIMINARY ES4428/ES4427 DATA SHEET ES4428 PIN DESCRIPTION Name Number Definition VC33 1, 18, 27, 59, 68, 75, 92, 99, 3.3V digital power supply. 104, 130, 148, 157, 159, 164, 183, 193, 201 VC25 9, 35, 44, 83, 121, 139, 172 2.5V digital power supply.
  • Page 21 PRELIMINARY ES4428/ES4427 DATA SHEET Name Number Definition AVSS (PLL) Audio PLL analog ground. DMA[11:0] 66:61,58:53 DRAM address bus. DCAS# Column address strobe (active-low). DOE#/ Output enable/clock enable (active-low). DSCK_EN DWE# DRAM write enable (active-low). DRAS0# Row address strobe 0 (active-low). DRAS1# Row address strobe 1 (active-low).
  • Page 22 PRELIMINARY ES4428/ES4427 DATA SHEET Name Number Definition HD[2] I/O Host data bus I/O 2. DCI[2] I/O DCI interface I/O 2. EAUX1[2] I/O I/O x. HD[3] I/O Host data bus I/O 3. DCI[3] I/O DCI interface I/O 3. EAUX1[3] I/O I/O x. HD[4] I/O Host data bus I/O 4.
  • Page 23 PRELIMINARY ES4428/ES4427 DATA SHEET ES4427 PINOUT 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 DSC_D7 MIC1 MIC2 DSC_D6 AOL+ AOL- DSC_D5 AOR- AOR+...
  • Page 24 PRELIMINARY ES4428/ES4427 DATA SHEET Name Number I/O Definition MUTE Audio mute output. MCLK Audio master clock input. AUX0[7] I/O Auxiliary bus 0. Dual-purpose pin TWS is the transmit audio frame sync input from ES4428. SPLL_OUT SPLL_OUT is the select PLL output. AUX1[0] I/O Auxiliary bus 1.
  • Page 25 PRELIMINARY ES4428/ES4427 DATA SHEET ES4428 DEVICE INTERFACES Name Number I/O Definition Audio Audio transmit frame sync [TWS]. Interface Audio transmit serial data [TSD]. I/O Audio master clock for audio DAC [MCLK]. I/O Audio transmit bit clock [TBCK]. Audio receive serial data input [RSD]. Audio receive frame sync input [RWS].
  • Page 26 PRELIMINARY ES4428/ES4427 DATA SHEET Processor 23:19, 16:10, 7 :2, I/O Flash, ROM and SRAM device address bus [LA21:0]. Interface 207:204 197:194, 191:185, I/O Flash, ROM and SRAM device data bus [LD15:0]. 182:178 Flash memory device output enable [LOE#]. Read-only memory chip select 1 [LCS1#]. 175, 176 Flash memory chip select [3:2] ]LCS3:2#].
  • Page 27 IC BLOCK DIAGRAM & DESCRIPTION IC U214 Am29F002B/Am29F002NB 2 Megabit (256 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory DISTINCTIVE CHARACTERISTICS Single power supply operation Embedded Algorithms — 5.0 Volt-only operation for read, erase, and — Embedded Erase algorithm automatically program operations preprograms and erases the entire chip or any combination of designated sectors...

  • Page 28: Block Diagram

    IC BLOCK DIAGRAM & DESCRIPTION PRODUCT SELECTOR GUIDE Family Part Number Am29F002B/Am29F002NB = 5.0 V ± 5% Speed Option = 5.0 V ± 10% -120 Max access time, ns (t Max CE# access time, ns (t Max OE# access time, ns (t Note: See “AC Characteristics”...
  • Page 29 IC BLOCK DIAGRAM & DESCRIPTION CONNECTION DIAGRAMS NC on Am29F002NB NC on Am29F002NB RESET# V CC 31 30 PDIP PLCC 17 18 19 20 V SS Standard TSOP RESET# NC on Am29F002NB...
  • Page 30 IC BLOCK DIAGRAM & DESCRIPTION PIN CONFIGURATION LOGIC SYMBOL A0–A17 = 18 addresses DQ0–DQ7 = 8 data inputs/outputs A0–A17 = Chip enable DQ0–DQ7 = Output enable = Write enable RESET# = Hardware reset pin, active low (not available on Am29F002NB) = +5.0 V single power supply RESET# (see Product Selector Guide for...

  • Page 31: Ordering Information

    IC BLOCK DIAGRAM & DESCRIPTION IC U206 SDRAM-HY57V65162B 4 Banks x 1M x 16Bit Synchronous DRAM DESCRIPTION The Hyundai HY57V651620B is a 67,108,864-bit CMOS Synchronous DRAM, ideally suited for the Mobile applica- tions which require low power consumption and extended temperature range. HY57V651620B is organized as 4banks of 1,048,576x16.
  • Page 32 IC BLOCK DIAGRAM & DESCRIPTION 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 33: Functional Block Diagram

    IC BLOCK DIAGRAM & DESCRIPTION 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...

  • Page 34: Absolute Maximum Ratings

    IC BLOCK DIAGRAM & DESCRIPTION ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit °C Ambient Temperature -40 ~ 85 °C Storage Temperature -55 ~ 125 Voltage on Any Pin relative to V -1.0 ~ 4.6 Voltage on V relative to V -1.0 ~ 4.6 Short Circuit Output Current Power Dissipation...
  • Page 35 IC BLOCK DIAGRAM & DESCRIPTION IC WS7805 POSITIVE-VOLTAGE REGULATORS TO-252 3-Termainal Regulators WS7805DP Output Current Up to 1.5 A No External Components Internal Thermal Overload Protection High Power Dissipation Capability Internal Shot-Circuit Current Limiting (TO-252) Output Transistor Safe-Area Compensation DESCRIPTION This series of fixed-voltage monolithic integrated-circuit voltage regulators designed for a wide range of applications.

  • Page 36: Schematic & Pcb Wiring Diagram

    SCHEMATIC & P.C.B WIRING DIAGRAM FRONT SCHEMATIC DIAGRAM VFD401 FIL+ GRID6 GRID5 GRID4 GRID3 GRID2 GRID1 KEY4 R401 KEY3 R402 SEG9 R403 KEY2 KEY2 SEG10 KEY1 R404 KEY1 SEG11 VFDST SEG12 S12/G1 R417 -25V C406 SEG1 SEG13 U401 S13/G1 R411 R412 R413 R414...
  • Page 37 FRONT SCHEMATIC DIAGRAM...
  • Page 38 POWER BOARD SCHEMATIC DIAGRAM CN505 SD+5V L505 DGND C507 10uH/1A DGND 10 1 +12V XS04 TC503 TC504 C508 DGND 470uF/16V 470uF/16V 10 4 SD+5V D508 HER105 DGND SA+5V CN502 R503 C502 DGND XS06 D502 D503 103/1KV 39K/2W 1N4007 1N4007 T501 R502 C509 D501...
  • Page 39 POWER BOARD SCHEMATIC DIAGRAM...
  • Page 40 OK SCHEMATIC DIAGRAM R634 4.7K R609 R607 TC605 C605 100P 22uF/16V R613 TC603 R629 4.7uF/16V MIC602 C607 100P 100P C620 TC601 R603 4.7uF 560R -12VA R628 L602 4.7K U601A R614 R601 C603 R605 4558 TC611 +12VA 4.7uF/16V U602B TC610 R626 TC613 4558 4.7u/16V...
  • Page 41 OK. SCHEMATIC DIAGRAM...
  • Page 42 JK703 JK701 JK702 L701 SPDIF L709 C701 GREEN FBSMT C709 C710 20pF R701 330R L702 SPDIF BLACK C702 R702 VIEDO L703 VGND L707 BLUE C703 FBSMT C707 20pF L704 L708 C704 FBSMT C708 20pF RCA-407 L705 CON26 C705 VGND L706 VGND C706 JK705...
  • Page 44 MIAN SCHEMATIC DIAGRAM VCC3.3 U211 VCC5A VCC VCC C203 C204 C205 C206 C207 C208 C209 C210 C211 C212 C213 C214 C215 C289 R201 4.7K U202 DMA0 R2165 AT24C01/X4050 R207 R208 VCC2.5 VCC3.3E DMA1 R2166 UPA[20..0] 78L05 VCC5A 4.7K DMA2 R2167 R2101 C284 DMA3...
  • Page 45 MIAN SCHEMATIC DIAGRAM R254 U205F U205E R2104 4.7K DATA SPDIF SPDIF# L239 FBSMT #OKA R253 AUX4 C253 HCU04 HCU04 330R L240 FBSMT AUX6 U205D L241 FBSMT AUX7 C247 C248 C249 C250 R255 DATA L242 FBSMT AUX3 XS201 HCU04 XS05 M+9V VCC3.3 #OKA C261...
  • Page 46 MIAN SCHEMATIC DIAGRAM R2102 VCC5A VCC3.3 VCCA R233 R224 R2103 0R(OPEN) 0R(OPEN) TC236 C297 10uF/16V TC231 C225 C2139 U207 R2129 R2132 10uF/16V MUTE1 MUTEC1 TSD0- SDIN1 AOUTA1 C2111 TSD1- SDIN2 AOUTB1 C2116 TSD2- MUTE2 SDIN3 MUTEC2 RBCK R2130 R2131 R2136 6.8K SCLK AOUTA2 TC240...
  • Page 47 MIAN SCHEMATIC DIAGRAM D+3.3V D+1.8V D+3.3V A+3.3V D+3.3V A+3.3V C330 10uH L322 TC301 C335 100uF/16V C331 C332 C333 C334 AGND R333 R332 M+9V C329 NINTO MINTO NTRYCL ODCIRQ R331 NINT1 NEOECT C301 VDD3 MONI3 1N4148 10uH VD301 L321 XS301 MONI2 4.7K ADSCIRQ R330...
  • Page 48 MIAN SCHEMATIC DIAGRAM CPU3.3V C360 C361 U303 TC306 C3FBJG000008 100uF/16V CPUADR16 CPUADR17 CPUADR15 XBYTB CPUADR14 CPUADR13 CPUDT15 DO15/A- CPUADR12 CPUDT7 CPUADR11 CPUDT14 DO14 CPUADR10 CPUDT6 CPUADR9 CPUDT13 DO13 CPUADR20 R374 OPEN CPUDT5 CPUADR21 R375 OPEN CPUDT12 DO12 NWEL CPUDT4 CPU3.3V XRESET CPU+3.3V CPU3.3V...
  • Page 49 MIAN SCHEMATIC DIAGRAM...
  • Page 50 MIAN SCHEMATIC DIAGRAM...

  • Page 51: Spare Parts List

    BBK931S(RU) MATERIAL LIST 1. DECODE BOARD MATERIAL SPECIFICATIONS quantity location specification R213,R219,R287,R335,R2102,R2107,R2180,R2182,C2119, CHIP 1/16W 0Ω ±5% C2128,C2131,L245,L246,L247,L248,L320,VD204,R224,R2 RESISTOR CHIP 1/16W 10Ω ±5% R214 RESISTOR CHIP 1/16W 22Ω ±5% R382~R399,R2165~R2175,R2177~R2179,R3100~R3104 RESISTOR CHIP 1/16W 33Ω ±5% R216~R218,R220,R222,R223,R247~R249,R292 RESISTOR CHIP 1/16W 47Ω ±5%...
  • Page 52 CHIP 1/16W 4.7MΩ ±5% R329 RESISTOR CD11 50V2.2U±20%5×11 2 TC232,TC233 CD11 16V10U±20%5×11 2 TC208,TC209,TC221~TC230,TC240,TC241,TC201 TC202~TC204,TC231,TC234~TC236,TC301~TC303,TC30 CD11C 16V47U±20%5×7 2 5~TC307 CD11 16V220U±20%6×12 2.5 TC206,TC207 CHIP 50V 10P ±5% NPO 0603 C366~C374 CAPACITOR CHIP 50V 22P ±5% NPO 0603 C201 CAPACITOR CHIP 50V 27P ±5% NPO 0603 C292,C306,C307 CAPACITOR...
  • Page 53 CHIP L201,L202,L239~L242,L249,L250,L302~L319,L321,L327, MAGNETIC FCM1608K-221T05 L330~L343,R206 BEADS CHIP DIODE 1N4148 VD205~VD217,VD301 57.1 CHIP DIODE LS4148 VD205~VD217,VD301 57.2 CHIP DIODE LL4148 VD205~VD217,VD301 TRIODE S8050D Q203 TRIODE C1815Y Q205~Q210,Q212 TRIODE 2SA1015 Q211,Q218,Q219 HA178L05PA TO-92M U211 NJM4558M SOP U219,U220,U221 62.1 IC 4580 SOP U219,U220,U221 62.2 IC 4558 SOP U219,U220,U221...
  • Page 54 CARBON- FILM 1/4W1MΩ±5% SHAPED 10 R504 RESISTOR METAL FILM 1/4W4.7K±1% R508 RESISTOR METAL FILM 1/4W12K±1% SHAPED 10 R509 RESISTOR METAL 1W330Ω±5% R-SHAPED 15× OXIDE FILM R511 RESISTOR METAL OXIDE FILM 2W39K±5% SHAPED 15×9 R503 RESISTOR METAL OXIDE FILM 2W120K±5% SHAPED 15 R502 RESISTOR HIGH...
  • Page 55 CHOKE COIL 10UH 1A 5mm L505 CHOKE COIL 10UH 2A 5mm L506,L507 SWITCH MAINS BCK-4025B-2876 T501 TRANSFORM DIODE HER105 D506,D508,D511,D512 DIODE HER306 D510 SCHOTTKY SR360 D509 DIODE DIODE HER107 D505 VOLTAGE REGULATOR 5.1V 1/2W ZD501 DIODE VOLTAGE REGULATOR 9.1V 1W ZD502 DIODE DIODE...
  • Page 56 RADIATION 51.1 11×15×25 WHITE AB905 U501,U504 FOR HEAT RADIATION BOARD GROUND CHIP OF THE AB903 G501~G502 POWER BOARD TAPPING BT 3×8 BLACK FIXED HEAT RADIATION BOARD SCREW 3. OUTPUT BOARD MATERIAL SPECIFICATIONS quantity location specification CARBON- FILM 1/6W68Ω±5% R703 RESISTOR CARBON- FILM 1/6W91Ω±5%...
  • Page 57 CARBON- FILM 1/6W1K±5% SHAPED 7.5 R607,R608,R611,R619,R626 CAPACITOR CARBON- FILM 1/6W4.7K±5% SHAPED 7.5 R622,R628,R634 CAPACITOR CARBON- FILM 1/6W5.1K±5% SHAPED 7.5 R616 CAPACITOR CARBON- FILM 1/6W10K±5% SHAPED 7.5 R605,R606,R612,R617,R620,R621,R624 CAPACITOR CARBON- FILM 1/6W22K±5% SHAPED 7.5 R601,R602 CAPACITOR CARBON- FILM 1/6W10Ω±5% SHAPED 7.5 R632,R633 CAPACITOR CARBON-...
  • Page 58 ROTATING POTENTIOM- WH09-2L-B10K-F25 ±20% VR601 ETER ROTATING POTENTIOM- WH09-2L-B50K-F25±20% VR602 ETER A929-0 5P70 2.0/2.5 2 PLUG WITH L RAFT CORDS XS602 NEEDLE 6. MAIN FRONT PANEL (1) MATERIAL SPECIFICATIONS quantity location specification SOFT 15×4×3.5 DOUBLE SIDE CONNECT VFD AND THE FRONT PANEL'S PCB SPONGE PAD ADHESIVE TAPE (SOFT) SOFT...
  • Page 59 7. MAIN FRONT PANEL (2) MATERIAL SPECIFICATIONS quantity location specification CHIP 1/16W 33K ±5% R401~R404,R411~R414 RESISTOR CHIP 50V 101 ±5% NPO 0603 C403,C404,C406 CAPACITOR CHIP 50V 103 ±10% 0603 C401,C405 CAPACITOR 4929-0...

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