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BBK Bbk920S Service Manual

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SERVICE MANUAL
Bbk920S
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  • Page 1 SERVICE MANUAL Bbk920S Downloaded from www.Manualslib.com manuals search engine...

  • 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

    1.1 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

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  • Page 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. 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

    5.1 Optical pickup Unit Explosed View and Part List Pic (1) Downloaded from www.Manualslib.com manuals search engine...
  • 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

    6.1. 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

    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. 2.Confirm that the chrominance signal(C)level is 621 mVp-p±30mV Downloaded from www.Manualslib.com...

  • Page 12: Mpeg Board Check Waveform

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  • Page 13: Ic Block Diagram & Description

    MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE GENERAL DESCRIPTION M T 1 3 3 6 i s a h i g h p e r f o r m a n c e C M O S a n a l o g f r o n t -e n d I C f o r b o t h C D _ R O M d r i v e r u p t o 4 8 X S a n d D V D - R O M d r i v e r u p t o 1 6 X S .
  • Page 14 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE DVDA RFOP DVDB ATTENUATOR INPUT MUX RFON DVDC LRFRP DEFECT DVDD HRFRP CRTP DVDRFIN ENVELOP ENVELOP CRTPLP DETECTOR DETECTOR DVDRFIP REFCOS HALLCOS SBAD COSPHI DPFN REFSIN DPFO HALLSIN SINPHI DPDMUTE MDI2...
  • Page 15 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE WOBSO WVDD AGNDX DVDA AGNDX DVDB AVDDO DVDC RFOP DVDD RFON DVDRFIP AGNDO DVDRFIN AGNDT MT1336 AVDDT V2REFO RFGC VREFO DVD-ROM RFGCU RFGCI CEQP With CEQN AGNDX DVD_RAM AGNDX VDDP Read...
  • Page 16 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE MT1336 PIN DESCRIPTIONS Pin Numbers Symbol Type Description LQFP128 RF Flag Interface DEFECT Digital Output Flag of bad data output status RF SIO interface SCLK Digital Input RF serial clock input SDEN Digital Input RF serial data enable...
  • Page 17 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE RFGCU Analog RF AGC loop capacitor connecting for DVD -RAM RFGCI Analog RF AGC loop capacitor connecting for DVD -RAM Analog Input DC coupled DVD-RAM main-beam RF signal input A Analog Input DC coupled DVD-RAM main-beam RF signal input B Analog Input...
  • Page 18 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Analog Input MDI1 Laser power monitor input LDO1 Analog Ou tput Laser driver output Analog Input MDI2 Laser power monitor input LDO2 Analog Output Laser driver output RF RIPPLE CRTP Analog RF top envelop filter capacitor connecting...
  • Page 19 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE ALPC TRIMMING Analog input Trimming pin for ALPC1 Analog input Trimming pin for ALPC1 Analog input Trimming pin for ALPC2 Analog input Trimming pin for ALPC2 HIGH SPEED TRACK COUNTING TRLP Analog Low-pass filter capacitor connecting...
  • Page 20 MT1336 PRELIMINARY, SUBJ ECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Downloaded from www.Manualslib.com manuals search engine...

  • Page 21: Mt1379

    MT1379 Progressive Scan DVD Player Combo Chip Speci f i c ati o ns are subj e ct to change wi t hout noti c e § Tray control can be PWM output or digital output Super Integration DVD player single chip §...
  • Page 22 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE § cycle timings Downmix function § § Block-based sector addressing Support IEC 60958/61937 output § Programmable buffering counter for buffer status - PCM / bit stream / mute mode tracking - Custom IEC latency up to 2 frames §...
  • Page 23 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE EFINITIONS Pin Number Symbol Type Description IREF Analog Input Current reference input. It generates reference current for data PLL. Connect an ext ernal 100K resistor to this pin and PLLVSS. PLLVSS Ground Ground pin for data PLL and related analog circuitry...
  • Page 24 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description HIGHA6 Inout Microcontroller address 14 2~16MA, SR HIGHA7 Inout Microcontroller address 15 2~16MA, SR Inout Microcontroller address/data 7 2~16MA, SR Inout Microcontroller address/data 6 2~16MA, SR Inout Microcontroller address/data 5...
  • Page 25 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description IOA7 Inout Microcontroller address 7 / IO 2~16MA, SR Output Flash address 16 2~16MA, SR Output Flash address 17 2~16MA, SR IOA18 Inout Flash address 18 / IO 2~16MA, SR IOA19 Inout...
  • Page 26 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description UP1_7 Inout Microcontroller port 1 -7 4MA, SR PU, SMT UP3_0 Inout Microcontroller port 3 -0 4MA, SR PU, SMT UP3_1 Inout Microcontroller port 3 -1 4MA, SR PU, SMT INT0#...
  • Page 27 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description RD14 Inout DRAM data 14 2~16MA, SR PU/PD, SMT RD13 Inout DRAM data 13 2~16MA, SR PU/PD, SMT RD12 Inout DRAM data 12 2~16MA, SR PU/PD, SMT DVDD3 Power...
  • Page 28 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description DQM0 Output Mask for DRAM input/output byte 0 2~16MA, SR Output DRAM bank address 0 2~16MA, SR RA10 Output DRAM address10 2~16MA, SR DVDD2 Power 2.5V power pin for internal digital circuitry Output...
  • Page 29 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description RD23 Inout DRAM data 23 / 2~16MA, SR Videoin Data PortA 7 PU/PD, SMT RD22 Inout DRAM data 22 / 2~16MA, SR Videoin Data PortA 6 PU/PD, SMT DVDD2 Power...
  • Page 30 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description ASDATA3 Inout Audio serial data 3 (surround left/surround right channel) Trap value in power-on reset : PD SMT 1 : manufactory test mode 0 : normal operation OR Videoin Data PortB 1 ASDATA4 Inout...
  • Page 31 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Pin Number Symbol Type Description SPDATA Input Audio data of SPDIF input / Videoin Data PortB 5 DVDD2 Power 2.5V power pin for internal digital circuitry SPLRCK Input Audio left/right channel clock of SPDIF input / Videoin Data PortB 6 SPBCK Input...
  • Page 32 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE 26 Jul, 2002 Page 1 of 2 IREF YUV0/CIN PLLVSS LPIOP VREF LPION DACVDDC LPFON ASDATA4 LPFIP ASDATA3 LPFIN ASDATA2 LPFOP ASDATA1 JITFO ASDATA0 JITFN SPDIF PLLVDD3 MC_DATA ACLK DVDD3 TROPENPWM ALRCK...
  • Page 33 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE UNCTIONAL LOCK D V D m o d u l e S e r v o A n a l o g S p i n d l e D e b u g S y s t e m T V e n c o d e r...
  • Page 34 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE controller changes the mode and speed of operation according to servo register setting. The PWM generator generates pulse -width-modulated signal to drive disc spindle motor driver. CSS/CPPM The CSS/CPPM module provides functions necessary for decoding discs conforming to CSS/CPPM specification. System Parser The system parser is used to help the system controller to decode DVD/SVCD/VCD bitstream just after the channel decoder performing error correction.
  • Page 35 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE This is a hardware sub-picture decoder. It decodes the compressed SPU image bitstream and CHG_COLCON commands according to SPU header information previously decoded by system controller. The SPU module also allows two SPU objects to be displayed at the same time.
  • Page 36 MT1379 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE LECTRICAL HARACTERISTICS Absolute Maximum Rating Symbol Parameters Value Unit VDD3 3.3V Supply voltage -0.3 to 3.6 VDD2 2.5V Supply voltage -0.3 to 3.0 VDDA Analog Supply voltage -0.3 to 3.6 Input Voltage -0.3 to 5.5 Output Voltage...

  • Page 37: U214 Hy29F800

    KEY FEATURES n Sector Protection n 5 Volt Read, Program, and Erase – Minimizes system-level power requirements – Any combination of sectors may be n High Performance locked to prevent program or erase – Access times as fast as 55 ns operations within those sectors n Low Power Consumption n Temporary Sector Unprotect...

  • Page 38: Block Diagram

    BLOCK DIAGRAM DQ[15:0] A[18:0], A-1 STATE C O N T R O L ERASE VOLTAGE I/O BUFFERS G E N E R A T O R A N D DQ[15:0] S E C T O R S W I T C H E S C O M M A N D W E # REGISTER...
  • Page 39 PIN CONFIGURATIONS RY/BY# RESET# W E # BYTE# DQ15/A-1 DQ14 DQ13 DQ12 W E # Standard BYTE# RESET# DQ11 TSOP48 DQ15/A-1 RY/BY# DQ10 DQ14 DQ13 DQ10 DQ12 DQ11 BYTE# DQ15/A-1 DQ14 DQ13 DQ12 W E # Reverse RESET# DQ11 TSOP48 DQ10 RY/BY# Downloaded from...

  • Page 40: U203 Sdram-Hy57V1610D

    D E S C R I P T I O N T H E H y n i x H Y 5 7 V 1 6 1 6 1 0 D i s a 1 6 , 7 7 7 , 2 1 6 - b i t s C M O S S y n c h r o n o u s D R A M , i d e a l l y s u i t e d f o r t h e M o b i l e a p p l i c a t i o n s w h i c h r e q u i r e l o w p o w e r c o n s u m p t i o n a n d i n d u s t r i a l t e m p e r a t u r e r a n g e .
  • Page 41 P I N C O N F I G U R A T I O N V D D V S S D Q 0 D Q 1 5 D Q 1 D Q 1 4 V S S Q V S S Q D Q 2 D Q 1 3...
  • Page 42 F U N C T I O N A L B L O C K D I A G R A M 1 M x 1 6 S y n c h r o n o u s D R A M S e l f R e f r e s h C o u n t e r R e f r e s h R e f r e s h...
  • Page 43 A B S O L U T E M A X I M U M R A T I N G S P a r a m e t e r S y m b o l R a t i n g U n i t °C A m b i e n t T e m p e r a t u r e...
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  • Page 45: Schematic & Pcb Wiring Diagram

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  • Page 58: Spare Parts List

    BBK20S（RU）MATERIAL LIST 1. DECODE BOARD MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION L243~L248,R205,R219,R220,R2 26,R240,R241,R243,R255,R257, SMD RESISTOR 1/16W 0Ω ±5% R259,R282,R332,R337,R2162, R286,R297 SMD RESISTOR 1/16W 75Ω ±5% R256 CARBON FILM RESISTOR 1/4W2.2Ω±5% R341 SMD RESISTOR 1/16W1Ω±5% R312,R313,R317,R318,R336 SMD RESISTOR 1/16W 4.7Ω ±5% R212,R213,R251,R252 SMD RESISTOR 1/16W 15Ω...
  • Page 59 SMD CAPACITOR 50V 27P ±5% NPO 0603 C222,C223,C333 C225,C241~C243,C254,C256, SMD CAPACITOR 50V 47P ±5% NPO 0603 C257,C259,C260,C262,C266, C268,C269,C271 SMD CAPACITOR 50V 82P ±5% NPO 0603 C305 C216,C273,C274,C342,C2111,C2 SMD CAPACITOR 50V 101 ±5% NPO 0603 114,C2123 SMD CAPACITOR 50V 331 ±5% NPO 0603 C217,C218 SMD CAPACITOR 50V 151 ±5% NPO 0603...
  • Page 60 TRIODE 2SA1015 Q211,Q218,Q219 SMD TRIODE 3906 Q213~Q217,Q220 SMD TRIODE 3904 V305 SMD TRIODE 9014C V310 SMD TRIODE 2SK3018 V303,V304 SMD TRIODE 2SB1132 V301,V302 NJM4558M SOP U219,U221 60.1 IC 4580 SOP U219,U221 60.2 IC 4558 SOP U219,U221 MM74HCU04M SOP U205 61.1 IC HCU04 SOP U205 HY57V161610DTC-7 TSOP...
  • Page 61 C505,C507,C509,C511,C513, PORCELAIN CAPACITOR 50V 100P ±10% 5mm C514 PORCELAIN CAPACITOR 50V 104 ±20% 5mm C504,C508,C510,C515 PORCELAIN CAPACITOR 1000V 101 +80%-20% 7.5mm C503 14.1 PORCELAIN CAPACITOR 1000V 101 ±10% 7.5mm C503 PORCELAIN CAPACITOR 1000V 103 +80%-20% 7.5mm C502 CERAMIC CAPACITOR CT81 400V 221±20% 10mm BC503 16.1 CERAMIC CAPACITOR CT81 400V221±10% 10mm...
  • Page 62 POWERGRID FILTER UT-20 40mH ±20% 10×13 L501 PHOTOELECTRIC COUPLER HS817 U502 LM7805 GOLD SEALED TO-220 U504 5933-0 SOCKET 5P 2.0mm CN501 SOCKET 9P 2.5mm CN503 SOCKET 2P 2.5mm CN502 SOCKET 6P 2.5mm CN504 SOCKET 2P 8.0mm 2# BCN501,BCN502 CONNECTION CORDS Φ0.6 SHAPED 7.5mm J506,J503 CONNECTION CORDS...
  • Page 63 5-6P120 2.0 2 SOCKET WITH L FLAT CABLE XS402 NEEDLE REVERSE 5 CORD 5P150 2.0 2 SOCKET WITH L FLAT CABLE XS401 NEEDLE REVERSE IR SENSOR HS0038A2 U403 4. OK BOARD MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION CARBON FILM RESISTOR 1/6W1K±5% R619 SMD RESISTOR 1/16W 1K ±5%...
  • Page 64 RC4558P DIP U601 U602 PT2399 DIP U603 CONNECTION CORDS Φ0.6 SHAPED 7.5mm JP601,JP602 6920S-0 5. OUTPUT BOARD MATERIAL SPECIFICATIONS/PART NUMBER QUANTITY LOCATION CARBON FILM RESISTOR 1/4W68Ω±5% R703 CARBON FILM RESISTOR 1/6W100Ω±5% R702 CARBON FILM RESISTOR 1/4W220Ω±5% R701 CARBON FILM RESISTOR 1/4W330Ω±5% R709 SMD RESISTOR...

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