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BBK DV727S, Service Manual, Page: 37 / 45

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BBK DV727S Service Manual Download Page 37

Summary of Contents for DV727S

Page 1: ...SERVICE MANUAL DV727S...

Page 2: ...1 OPTICAL PICKUP UNIT EXPLOSED VIEW AND PART LIST 4 5 2 BRACKET EXPLOSED VIEW AND PART LIST 6 6 ELECTRICAL CONFIRMATION 8 6 1 VIDEO OUTPUT LUMINANCE SIGNAL CONFIRMATION 8 6 2 VIDEO OUTPUT CHROMINANCE...

Page 3: ...removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as alminum foil to prevent electrostatic charge buildup or exposure of the assembly 3 Use only...

Page 4: ...4 4 5 6 7 8 9 10 11 12 13 POWER switch 6 5 STOP button 8 PLAY button 4 2 Power indicator IR SENSOR 3 Disc tray PAUSE button 7 Display window PREV button 10 NEXT button 12 OPEN CLOSE button 11 Push bu...

Page 5: ...installation the both ends of the laser diode are short circuited After replacing the parts with new ones remove the short circuit according to the correct procedure See this Technical Guide 2 Do not...

Page 6: ...5 1 Optical pickup Unit Explosed View and Part List Pic 1...

Page 7: ...MIDDLE A 1 7 1EA2511A29400 GEAR MIDDLE B 1 8 1EA2744A03000 SHAFT SLIDE 1 9 1EA2744A03100 SHAFT SLIDE SUB 1 10 1EA2812A15300 SPRING COMP TYOUSEI 3 11 1EA2812A15400 SPRING COMP RACK 1 21 1EA0B10B20100 A...

Page 8: ...t wheel 17 Pick up 5 gearwheel 18 switch 6 iron chip 19 Five pin flat plug 7 Immobility mechanism equipment 20 screw 8 Magnet 21 PCB 9 Platen 22 motor 10 Bridge bracket 23 Motor wheel 11 screw 24 scre...

Page 9: ...h a soldering iron after a circuit is connected Keep the power source of the pick up protected from internal and external sources of electrical noise Refrain from operation and storage in atmospheres...

Page 10: ...onnect the oscilloscope to the video output terminal and terminate at 75 ohms 2 Confirm that luminance signal Y S level is 1000mVp p 30mV Measurement point Video output terminal Color bar 75 PLAY Titl...

Page 11: ...tput terminal and terminate at 75 ohme 2 Confirm that the chrominance signal C level is 621 mVp p 30mV Measurement point Video output terminal Color bar 75 PLAY Title 46 DVDT S15 PLAY Title 12 DVDT S0...

Page 12: ......

Page 13: ...r Sectors can be locked in system or via programming equipment Temporary Sector Unprotect feature allows code changes in previously locked sectors Unlock Bypass Program Command Reduces overall program...

Page 14: ...ss time ns tACC 70 90 120 Max CE access time ns tCE 70 90 120 Max OE access time ns tOE 30 35 50 Input Output Buffers X Decoder Y Decoder Chip Enable Output Enable Logic Erase Voltage Generator PGM Vo...

Page 15: ...12 DQ4 VCC DQ11 DQ3 DQ10 48 33 47 46 45 44 43 42 41 40 39 38 37 36 35 34 25 32 31 30 29 28 27 26 A1 A15 A18 A14 A13 A12 A11 A10 A9 A8 A19 NC WE RESET NC NC RY BY A17 A7 A6 A5 A4 A3 A2 1 16 2 3 4 5 6 7...

Page 16: ...22 RESET A18 A17 A7 A6 A5 A4 A3 A2 A1 A0 CE VSS OE DQ0 DQ8 DQ1 DQ9 DQ2 DQ10 DQ3 DQ11 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 WE A19 A8 A9 A10 A11 A12 A13 A14 A15 A16 BYTE VSS...

Page 17: ...16 bit mode CE Chip enable OE Output enable WE Write enable RESET Hardware reset pin RY BY Ready Busy output N A SO 044 VCC 3 0 volt only single power supply see Product Selector Guide for speed opti...

Page 18: ...f consecutive read or write cycles initiated by a single control command Burst length of 1 2 4 8 or Full page and the burst count sequence sequential or interleave A burst of read or write cycles in p...

Page 19: ...ite Enable RAS CAS and WE define the operation Refer function truth table for details LDQM UDQM Data Input Output Mask Controls output buffers in read mode and masks input data in write mode DQ0 DQ15...

Page 20: ...olumn Pre Decoders Column Add Counter Row active Column Active Burst Counter Data Out Control CAS Latency Internal Row counter DQ0 DQ1 DQ14 DQ15 refresh Self refresh logic timer Pipe Line Control I O...

Page 21: ...ates the MediaTek 2nd generation front end analog RF amplifier and the Servo MPEG AV decoder The progressive scan of the MT1389 utilized a proprietary advanced motion adaptive de interlace algorithm t...

Page 22: ...output or digital output Embedded Micro controller Built in 8032 micro controller Built in internal 373 and 8 bit programmable lower address port 1024 bytes on chip RAM Up to 4M bytes FLASH programmin...

Page 23: ...e echo Microphone tone control Vocal mute vocal assistant Key shift up to 8 keys Chorus Flanger Harmony Reverb Channel equalizer 3D surround processing include virtual surround and speaker separation...

Page 24: ...01 10K R402 10K R403 10K VCC DATA CLOCK STB C407 102 C406 104 C401 121 DNS C402 121 DNS C403 121 DNS C405 104 KEY2 KEY3 Seg3 Seg10 STB CLOCK DATA VCC GND IR 2 3 4 1 5 6 7 XS401 7P 2 0mm VCC Seg11 R412...

Page 25: ......

Page 26: ...KEY2 VCC LED2 2 1 XS902 2P 2 0mm DNS R901 0R DNS GND SEG1 KEY1 KEY3 GND VCC K903 PLAY K901 FF K902 STOP KEY3 KEY2 KEY1 SEG1 SEG2 R905 10K R906 10K C901 151 DNS C902 151 DNS VCC 1 2 LED903 HIGH LIGHT B...

Page 27: ......

Page 28: ...80K 1 2W D510 HER303 ZD501 5 1V 0 5W D506 HER105 D511 HER105 D512 HER105 3 3V TC507 47uF 16V D503 1N4007 D502 1N4007 D504 1N4007 D501 1N4007 C508 104 C511 104 9V 5V ZD502 10V 0 5W VDD 4 D 5 S 2 FB 3 D...

Page 29: ......

Page 30: ...C620 100uF 16V C620 104 NC R634 4 3K R631 3 9K TC618 47uF 16V C619 104 NC R632 3 9K R633 4 3K TC617 47uF 16V H_L R638 22R NC R637 22R NC OUT1 1 IN1 2 IN1 3 GND 4 VDD 8 OUT2 7 IN2 6 IN2 5 U603 TDA1308...

Page 31: ......

Page 32: ...FMSO TRSO FOSO V1P4 R212 33R 89V33 PWR A16 A15 A14 A13 A12 A11 A10 A9 A20 PCE A1 PRD AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 A17 A0 V18 VSCK VSDA VSTB SCL SDA RXD TXD URST IR INT0 DQS0 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2...

Page 33: ...Q2 5 DQ3 7 DQ4 8 DQ5 10 DQ6 11 DQ7 13 DQ8 42 DQ9 44 DQ10 45 DQ11 47 DQ12 48 DQ13 50 DQ14 51 DQ15 53 VCC 1 VCC 14 VCC 27 VCCQ 3 VCCQ 9 VCCQ 43 VCCQ 49 VSSQ 6 VSSQ 12 VSSQ 46 VSSQ 52 U211 SDRAM 64M DMA0...

Page 34: ...R2152 6 8K R2153 6 8K R2154 6 8K R2155 6 8K C2122 122 C2129 122 C2130 122 C2133 122 C2135 122 C2136 122 VOICE DET VLS 1 SDIN1 2 SDIN2 3 SDIN3 4 SCLK 5 LRCK 6 MCLK 7 VD 8 GND 9 RST 10 SCL 11 SDA 12 CS...

Page 35: ...HGND D203 1N4148 2 TX1O DV33 HGND D204 1N4148 2 DV33 HGND D207 1N4148 2 TXCO DV33 HGND D208 1N4148 2 TX0O DV33 HGND D205 1N4148 2 TX0O DV33 HGND D206 1N4148 2 TX2O DV33 HGND D201 1N4148 2 TX2O DV33 H...

Page 36: ...B_TOG 2 3 4 1 5 XS205 XS05 DNS USB_SEL R225 330R DNS C330 102 DNS A B OUT 1 A A OUT 3 RETURN 5 BLUE I O 7 RETURN 9 GREEN I O 11 RETURN 13 RED I O 15 RETURN 17 V OUT 19 GND 21 A B IN 2 A COM 4 A A IN 6...

Page 37: ......

Page 38: ...MCDN SMPWR VCC2CARD G D S Q906 FDN360P R913 100K C920 104 MSPWR VCC2CARD MSINS VCC 8 A0 1 A1 2 A3 3 GND 4 WP 7 SCL 6 SDA 5 U902 24C02 DNS R931 100K DNS C921 104 DNS VCC3 3 EEPCLK EEPDATA LED901 RED LE...

Page 39: ......

Page 40: ...210066 TERYLENE CAPACITOR 275V 104 20 15mm PCS 1 BC501 0210070 TERYLENE CAPACITOR 275V 104 10 15mm PCS 1 BC501 0260557 CD CD11T 16V100u 20 6 12 2 5 PCS 1 TC507 0260686 CD CD11T 25V220U 20 8 12 C5 PCS...

Page 41: ...11C 16V100U 20 15 6 7 2 5 PCS 2 TC619 TC620 0260201 CD CD11C 16V100U 20 6 7 2 5 PCS 2 TC619 TC620 0260021 CD CD11 16V22U 20 5 11 2 PCS 1 TC605 0260037 CD CD11 25V22U 20 5 11 2 PCS 1 TC605 0390095 SMD...

Page 42: ...CAPACITOR 50V 104 10 X7R 0603 PCS 2 C903 C904 1632101 PCB 9997 1 PCS 1 5 4 IN 1 CARD USB BOARD MATERIAL CODE MATERIAL NAME SPECIFICATIONS UNIT UANTI LOCATION 0090001 SMD RESISTOR 1 16W 0 5 0603 PCS 2...

Page 43: ...6W 6 8K 5 0603 PCS 6 R2136 R2148 R2152 R2155 0090023 SMD RESISTOR 1 16W 10K 5 0603 PCS 22 R208 R229 R309 R311 R313 R314 R328 R330 R334 R756 R2102 R2105 R2106 R2108 R 2109 R289 R226 R2144 R282 R221 R33...

Page 44: ...C232 C234 C239 C241 C25 4 C256 C259 C267 C274 C27 9 C281 C301 C303 C305 C3 11 C312 C323 C325 C329 C7 14 C715 C720 C730 C736 C7 40 C742 C746 C748 C751 C 2106 C2138 C2143 C2150 C 2157 C2163 C2166 C2171...

Page 45: ...SOP PCS 1 U207 0881914 IC RT9701CB SOT25 PCS 1 U206 0882353 IC CS5340 TSSOP PCS 1 U210 881031 IC 24C02N SOP PCS 1 U202 0881897 IC MT1389EE QFP PCS 1 U201 0881378 IC BA5954FP HSOP PCS 1 U302 0882427 IC...

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