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BBK DV721S Service Manual Download Page 41

0880322

IC

MM74HCU04M SOP

PCS

1

U205

0880513

IC

HCU04 SOP

PCS

1

U205

881415

IC

HY57V641620HGT-7 TSOP

PCS

1

U211

881872

IC

KSV464P4JA-70 TSOP

PCS

1

U211

881182

IC

LM1117MP-ADJ  SOT-223

PCS

1

U209

881057

IC

CS4360 SSOP

PCS

1

U207

881031

IC

24C02N SOP

PCS

1

U202

882257

IC

MT1389FE/C(C VERSION) QFP

PCS

1

U201

881378

IC

BA5954FP HSOP

PCS

1

U302

960020

CRYSTAL OSCILLATOR

27.00MHz 49-S

PCS

1

X201

1940140

CABLE SOCKET

14P 1.0mm STRAIGHT DUAL LINE PLUG

PCS

1

XS204

1631889

PCB

2967B-3

PCS

1

1940024

SOCKET

5P 2.0mm

PCS

1

XS302

1940005

SOCKET

6P 2.0mm

PCS

1

XS303

1940171

SOCKET

13P 2.5mm

PCS

1

XS203

1940023

SOCKET

7P 2.0mm

PCS

1

XS201

1940094

CABLE SOCKET

24P 0.5mm SMD WITH CLASP

PCS

1

XS301

39

Summary of Contents for DV721S

Page 1: ...VOL1 VOL2 SERVICE MANUAL DV721S...

Page 2: ...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 SI...

Page 3: ...s place the assembly on a conductive surface such as alminum foil to prevent electrostatic charge buildup or exposure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES...

Page 4: ...cations and Explanations Front Panel Illustration 5 MIC 1 jack PLAY button 10 MIC 2 VOLUME knob 6 IR SENSOR PAUSE button 11 STOP button 12 14 button 7 MIC 1 VOLUME knob 3 2 9 6 5 4 7 8 10 11 12 13 14...

Page 5: ...nds 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 use a tester to check t...

Page 6: ...5 1 Optical pickup Unit Explosed View and Part List Pic 1 5 Assembling and disassembling the mechanism unit 4...

Page 7: ...IDDLE 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 AS...

Page 8: ...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 screw...

Page 9: ...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 c...

Page 10: ...illoscope 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 Title 46 DVDT S15...

Page 11: ...te 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 S01 DVDT S15 or DVDT S01 Mo...

Page 12: ...7 MPEG BOARD CHECK WAVEFORM 7 1 27MHz WAVEFORM DIAGRAM 7 2 IC5L0380R PIN 2 WAVEFORM DIAGRAM 10...

Page 13: ...s 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 programming tim...

Page 14: ...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 Volt...

Page 15: ...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 8...

Page 16: ...2 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 optio...

Page 18: ...ve 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 progress can...

Page 19: ...te 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 D...

Page 20: ...lumn 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 B...

Page 21: ...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 to ach...

Page 22: ...utput 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 programming...

Page 23: ...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 T...

Page 24: ...7uF 16V DO CE CL DI C405 101 C404 681 R403 4 7K R404 62K 5V 5V KI1 R405 75R 5V 5V GND CE CL DI DO COM4 20 COM3 19 COM2 18 COM1 17 S16 16 S15 15 S14 14 S13 13 S12 12 S11 11 S1 1 S2 2 S3 3 S4 4 S5 5 S6...

Page 25: ...FRONT SCHEMATIC DIAGRAM 23...

Page 26: ...TC515 10uF 25V D513 HER105 C516 101 R512 22K R514 10K R513 1K D514 SR160 D515 SR560 JUMP 3 3V STB CPU 3 3V ASTB SA 5V GND CPU 3 3V V502 2N5551 BCN501 220V R516 100ohm R502 10K D507 1N4148 C517 104 CPU...

Page 27: ...POWER BOARD SCHEMATIC DIAGRAM 25...

Page 28: ...5 22uF 16V TC603 4 7uF 16V TC606 22uF 16V TC604 4 7uF 16V TC601 4 7uF TC602 4 7u 9VA R617 100K R621 10o h m 1 6W TC615 47uF 16V C601 104 R622 10o h m 1 6W TC616 47uF 16V C602 104 9V 9VA 9V 9VA OK 5 4...

Page 29: ...OK SCHEMATIC DIAGRAM 27...

Page 30: ...V IN 20 JK 706 VJ S 3921 R704 4 7K R705 75R V701 8050 V702 8050 R708 33R R709 330R R710 2 2K 10V A 10V AGND PDAT0 V703 8050 R711 1K R712 2 2K A 10V PDAT2 C716 104 AGND VCC AGND R707 A 10V AGND AGND VC...

Page 31: ...OUTPUT BOARD SCHEMATIC DIAGRAM 29...

Page 32: ...ADIN L202 FB 89V33 PWR A16 A15 A14 A13 A12 A11 A10 A9 A20 PCE A1 PRD AD0 AD1 AD2 AD3 AD4 AD5 AD6 A21 AD7 A17 A0 V18 VSCK VSDA VSTB SCL SDA RXD TXD URST IR DQM0 DQS0 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 DQ1...

Page 33: ...V A5VV VGND R222 0R DNS XI Q204 9016 RAS 17 CS 18 CAS 16 CKE 34 A0 21 A1 22 A2 23 A3 24 A4 27 A5 28 A6 29 A7 30 A8 31 A9 32 A10 20 BA A11 19 CLK 35 DQ7 12 DQ6 11 DQ5 9 DQ4 8 DQ3 6 DQ2 5 DQ1 3 DQ0 2 DQ...

Page 34: ...TA2 SDATA1 SDATA0 SLRCK SACLK SBCLK SCL SDA RESET LL RS RR LS LFE C R2132 20K C2116 102 OKA AGND R2156 20K R2136 6 8K R2148 6 8K R2152 6 8K R2153 6 8K R2154 6 8K R2155 6 8K C2122 122 C2129 122 C2130 1...

Page 35: ...MIAN SCHEMATIC DIAGRAM 33...

Page 36: ...100V 102 5 3 5mm PCS 1 C506 0200223 PORCELAIN CAPACITOR 1000V 101 80 20 7 5mm PCS 3 C516 C503 C501 200228 PORCELAIN CAPACITOR 1000V 101 10 7 5mm PCS 3 C516 C503 C501 0200229 CERAMIC CAPACITOR CT81 25...

Page 37: ...TAL 6 6 1 PCS 6 K401 K406 0881683 IC PT6554Q QFP PCS 1 U402 0881182 IC LM1117MP ADJ SOT 223 PCS 1 U404 1940022 SOCKET 4P 2 0mm PCS 1 XS402 2121245 SOFT CABLE 7P120 2 0 2 SOCKET WITH L NEEDLE THE SAME...

Page 38: ...TC604 TC613 0260021 CD CD11 16V22U 20 5 11 2 PCS 2 TC605 TC606 0260037 CD CD11 25V22U 20 5 11 2 PCS 2 TC605 TC606 0390057 MAGNETIC BEADS INDUCTOR RH354708 PCS 2 L601 L602 0570006 DIODE 1N4148 PCS 3 VD...

Page 39: ...1 16W 10 5 0603 PCS 2 R301 R302 0090005 SMD RESISTOR 1 16W 33 5 0603 PCS 16 R231 R232 R256 R263 R2 67 R291 R296 R2162 L202 0090232 SMD RESISTOR 1 16W 150 5 0603 PCS 2 R2109 R2180 0090009 SMD RESISTOR...

Page 40: ...129 C2130 C2133 C2135 C2136 0310067 SMD CAPACITOR 50V 152 10 0603 PCS 1 C215 0310068 SMD CAPACITOR 50V 222 10 0603 PCS 2 C307 C310 0310201 SMD CAPACITOR 50V 153 10 0603 PCS 1 C210 0310055 SMD CAPACITO...

Page 41: ...OP PCS 1 U202 882257 IC MT1389FE C C VERSION QFP PCS 1 U201 881378 IC BA5954FP HSOP PCS 1 U302 960020 CRYSTAL OSCILLATOR 27 00MHz 49 S PCS 1 X201 1940140 CABLE SOCKET 14P 1 0mm STRAIGHT DUAL LINE PLUG...

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