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广东步步高电子工业有限公司AV厂

BBK

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标准化

比例

质量

数量

2967T

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板号：

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解码

伺服电原理图

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Содержание DV525S

Страница 1: ...SERVICE MANUAL DV525S...

Страница 2: ...W 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 SIGNAL CONFIRMATION 9 7 MPEG BOARD...

Страница 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...

Страница 4: ...ront Panel Illustration POWER switch 2 Disc tray 3 OPEN CLOSE button PLAY PAUSE button 4 STOP button 5 8 6 7 9 LED display window Remote control signal sensor 2 3 4 4 5 6 7 8 9 Headphone jack MIC jack...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 12: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 24: ...tal control inputs A B and C and an inhibit input Each control input selects one of a pair of channels which are connected in a single pole double throw configuration When these devices are used as de...

Страница 25: ...IN 0 3 A B 2 Y CHANNELS IN OUT Y CHANNELS IN OUT X CHANNELS IN OUT X CHANNELS IN OUT 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 by bx cy OUT IN CX OR CY IN OUT CX INH VSS VEE VDD OUT IN ax OR ay ay ax A B...

Страница 26: ...10 A B INH VSS VEE VDD TG TG TG TG TG TG TG TG 4 2 5 1 LOGIC LEVEL CONVERSION 11 10 9 6 A B C INH 12 3 5 1 2 13 TG TG TG TG TG TG 4 COMMON OUT IN ax ay bx by cx cy 8 7 VSS VEE 16 VDD IN OUT 15 14 BINA...

Страница 27: ...0 0 1 1 0 0 1 0 2 0 0 1 1 3 0 1 0 0 4 0 1 0 1 5 0 1 1 0 6 0 1 1 1 7 1 X X X None CD4052B INHIBIT B A 0 0 0 0x 0y 0 0 1 1x 1y 0 1 0 2x 2y 0 1 1 3x 3y 1 X X None CD4053B INHIBIT A OR B OR C 0 0 ax or b...

Страница 28: ...2 K401 Open Close 1 2 C406 104 1 2 C401 121 DNS 1 2 C402 121 DNS 1 2 C403 121 DNS 1 2 C405 104 KEY2 KEY3 Seg1 Seg10 STB CLOCK DATA GND IR 2 3 4 1 5 6 XS401 6P 2 0mm VCC LED VCC KEY2 Seg2 1 2 C409 121...

Страница 29: ......

Страница 30: ...5 1V 0 5W D506 HER105 D511 HER105 D512 HER105 NC 3 3V TC507 100uF 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 6 D 7 D 8 S 1 U501 VIP...

Страница 31: ......

Страница 32: ...S TC620 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 TDA13...

Страница 33: ......

Страница 34: ...1 2 3 4 5 6 JK702 RCA 407 BLACK TC702 1000uF 10V TC703 220uF 16V TC704 220uF 16V L710 FBSMT SPDIF R701 220R C710 104 L713 FCM L714 FCM C707 105 VGND R716 0R AGND VGND R703 68R VIN 1 VCC 2 GND 3 JK705...

Страница 35: ......

Страница 36: ...209 15K R208 10K DMSO FMSO TRSO FOSO V1P4 V1P4 ADIN L202 33R 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...

Страница 37: ...247 0R L248 0R Y3 Y2 Y1 Y4 Y5 Y6 A0 23 A1 24 A2 25 A3 26 A4 29 A5 30 A6 31 A7 32 A8 33 A9 34 A10 AP 22 A11 35 BA0 A13 20 BA1 A12 21 CLK 38 CKE 37 CS 19 RAS 18 CAS 17 WE 16 DQML 15 DQMH 39 NC 36 NC 40...

Страница 38: ...4 9V AGND C2176 104 C2177 104 C2178 104 9V AGND SDATA2 SDATA1 SDATA0 SLRCK SACLK SBCLK SCL SDA RESET RS LS LFE C R2132 20K C2116 102 OKA AGND R2156 20K R2136 6 8K R2148 6 8K R2152 6 8K R2153 6 8K R215...

Страница 39: ...23 L255 0805 3 2 1 8 4 U215A 4580 5 6 7 U215B 4580 R2181 20K R2190 4 7K R2189 4 7K R2188 20K R2184 470R R2191 470R R2186 100K R2193 100K R2183 4 7K R2182 4 7K TC323 10UF 16V TC322 10UF 16V C2159 101 C...

Страница 40: ......

Страница 41: ...N CORDS 0 6 SHAPED 10mm PCS 1 JP511 0000273 CARBON FILM RESISTOR 1 4W33 5 SHAPED 10 PCS 1 R505 0000362 CARBON FILM RESISTOR 1 4W220 5 SHAPED 10 PCS 1 R515 0000278 CARBON FILM RESISTOR 1 4W330 5 SHAPED...

Страница 42: ...MD CAPACITOR 50V 102 10 0603 PCS 13 C701 C706 C716 C723 C728 0310222 SMD CAPACITOR 25V 104 20 X7R 0603 PCS 1 C710 0310207 SMD CAPACITOR 50V 104 20 X7R 0603 PCS 1 C710 0310543 SMD CAPACITOR 50V 104 10...

Страница 43: ...RESISTOR 1 16W 10K 5 0603 PCS 4 R606 R610 R635 R636 0090026 SMD RESISTOR 1 16W 22K 5 0603 PCS 1 R603 0090030 SMD RESISTOR 1 16W 56K 5 0603 PCS 2 R627 R628 0090034 SMD RESISTOR 1 16W 100K 5 0603 PCS 1...

Страница 44: ...1 90011 SMD RESISTOR 1 16W 470 5 0603 PCS 2 R325 R327 0090013 SMD RESISTOR 1 16W 680 5 0603 PCS 2 R259 R260 0090014 SMD RESISTOR 1 16W 1K 5 0603 PCS 25 R213 R215 R2104 R2117 R2118 R2 128 R254 R2184 R2...

Страница 45: ...20 X7R 0603 PCS 86 C207 C211 C214 C216 C217 C224 C 226 C231 C234 C239 C241 C254 C 256 C259 C267 C274 C279 C301 C 303 C305 C309 C311 C312 C2138 C 2140 C2153 C2157 C2161 C2163 C2 169 C2166 C2174 C2175...

Страница 46: ...U221 U215 0880322 IC MM74HCU04M SOP PCS 1 U205 880513 IC HCU04 SOP PCS 1 U205 0881415 IC HY57V641620HGT 7 TSOP PCS 1 U211 0881872 IC KSV464P4JA 70 TSOP PCS 1 U211 0881182 IC LM1117MP ADJ SOT 223 PCS...

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Страница 70: ...e range applications to audio equipment especially multi functional compact audio equipment such as mini and micro component stereo equipment MD radio cassette recorders DVDs and audio receivers Items...

Страница 71: ...al name GND FM DET VSM Rch OUT Vcc Lch OUT GND q w e r t y u DO i CL o DI 0 CE 1 FM ANT AM ANT FM AM PLL Combination IC L Vc R DO CL DI C 51 5max 18 3 TYPE IEC F FM ANT 20 60max 12 5 5 3 AM ANT GND 9...

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