BBK DV521S Service Manual Download Page 34 | Manualshive

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广东步步高电子工业有限公司

AV

厂

BBK

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名日

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标准化

比例

质量

数量

2971S

A

板号：

&

解码

伺服电原理图

R

2105

330R

R

2108

10K

+9

V

R

2109

150R

R

2104

1K

V

D

205

1N

4148

VCC

R

2103

1K

AGN

D

V

D

206

1N

4148

-9

V

AGN

D

M

U

TE-

1

T

C

235

220u

F

/16V

T

C

234

47u

F

/16V

AGN

D

R

2106

10K

Q

212

2S

C

1815-

Y

Q

218

1015

Q

219

1015

C

2134

683(D

N

S

)

C

2131

0R

C

2132

683(D

N

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SW

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SL#

R

L

T

C

225

10u

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/16V

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C

226

10u

F

/16V

T

C

227

10u

F

/16V

T

C

228

10u

F

/16V

T

C

229

10u

F

/16V

T

C

230

10u

F

/16V

R

2150

4.7K

R

2151

4.7K

C

2128

0R

C

2127

102

C

2126

101

R

2149

20K

R

2141

20K

C

2120

101

C

2121

102

C

2137

683(D

N

S

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R

2143

4.7K

R

2142

4.7K

R

2138

4.7K

R

2139

4.7K

C

2119

0R

C

2118

102

C

2117

101

R

2137

20K

R

2146

4.7K

R

2147

4.7K

C

2124

102

C

2123

101

R

2145

20K

R

2134

4.7K

R

2135

4.7K

C

2115

102

C

2114

101

R

2133

20K

R

2129

20K

C

2111

101

C

2112

102

R

2131

4.7K

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2130

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+9

V

+9

V

+9

V

+9

V

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3

2

1

4

8

U

219A

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6

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3

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220B

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10u

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/16V

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C

223

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10u

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10u

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1K

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2122

1K

R

2119

1K

R

2118

1K

R

2111

100K

R

2112

100K

R

2113

100K

R

2114

100K

M

U

TE-

1

Q

208

2S

C

1815-

Y

S

Q

207

2S

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1815-

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205

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Y

S

Q

206

2S

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1815-

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R

2127

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2125

1K

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2128

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2116

100K

Q

210

2S

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1815-

Y

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209

2S

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2140

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A

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R

2156

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2136

6.8K

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2148

6.8K

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2152

6.8K

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2153

6.8K

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2154

6.8K

R

2155

6.8K

C

2122

122

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2129

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2130

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3

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7

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GN

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9

RS

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11

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12

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1

28

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A

1

27

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26

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25

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2

24

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23

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3

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18

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17

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207

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4360

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2154

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2153

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3

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C

236

10u

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C

C

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2157

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232

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2156

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233

10u

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282

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231

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LS

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211

1015

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2102

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208

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209

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225

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226

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C

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291

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295

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296

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C

284

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DV3

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C

L

K

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BCL

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AM

D

AT

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R

289

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286

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288

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242

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243

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SET#

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286

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SET#

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Summary of Contents for DV521S

Page 1: ...SERVICE MANUAL DV521S POWER REW...

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: ...5 13 12 10 11 POWER REW PLAY button MIC 1 jack 5 10 Disc tray STOP button MIC VOLUME 1 knob 2 7 12 FWD button Display window 4 OPEN CLOSE button 9 14 REW button IR SENSOR 3 MIC VOLUME 2 knob 8 13 POW...

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: ...grates 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...

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: ...G4 KS4 14 SEG5 KS5 15 GR6 23 SEG6 KS6 16 SEG7 KS7 17 SEG8 KS8 18 SEG9 KS9 19 SEG10 KS10 20 SEG11 21 SEG12 GR7 22 VDD 25 GND 26 GR5 24 GR4 27 GR3 28 GND 29 GR2 30 GR1 31 GND 32 U401 PT6961 LEDAT LEDCK...

Page 25: ......

Page 26: ...TC512 47uF 50V TC506 1000uF 10V TC505 1000uF 10V TC509 1000uF 10V TC510 1000uF 10V 2 3 4 1 5 CN501 XS05 D508 HER105 C507 101 TC503 470uF 16V R511 220R 1W FB 4 GND 1 D 2 VCC 3 U501 5L0380R R507 1K R504...

Page 27: ......

Page 28: ...100p R607 1K R608 1K C608 102 R602 22K TC605 22uF 16V TC603 4 7uF 16V TC606 22uF 16V TC604 4 7uF 16V TC601 4 7uF TC602 4 7u 9VA R617 100K R621 10ohm1 6W TC615 47uF 16V C601 104 R622 10ohm1 6W TC616 4...

Page 29: ......

Page 30: ...TURN 17 V OUT 19 GND 21 A B IN 2 A COM 4 A A IN 6 FUNC SW 8 CONT 10 NC 12 RETURN 14 BLK I O 16 TRTURN 18 V IN 20 JK706 VJS3921 R704 4 7K R705 75R V701 8050 V702 8050 R708 33R R709 330R R710 2 2K 10V A...

Page 31: ......

Page 32: ...SO V1P4 V1P4 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 DQ...

Page 33: ...D DV937K C2152 104 C2151 104 C2150 104 TC203 10uF 16V 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...

Page 34: ...2141 104 C2142 104 C2143 104 9V AGND SDATA2 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 8...

Page 35: ......

Page 36: ...R242 16 SMD RESISTOR 1 16W 4 7K 5 16 R238 R240 R2130 R2131 R2134 R2135 R2138 R2140 R2142 R21 43 R2146 R2147 R2150 R2151 17 SMD RESISTOR 1 16W 6 8K 5 6 R2136 R2148 R2152 R2155 18 SMD RESISTOR 1 16W 10K...

Page 37: ...5 C286 40 SMD CAPACITOR 50V 102 10 0603 9 C2112 C2115 C288 C2118 C2 121 C2124 C2127 C223 C278 41 SMD CAPACITOR 50V 122 10 0603 6 C2122 C2129 C2130 C2133 C 2135 C2136 42 SMD CAPACITOR 50V 152 10 0603 1...

Page 38: ...PED 10 1 R506 3 METAL OXIDE FILM RESISTO 1W330 5 SHAPED R 15 8 1 R511 4 CARBON FILM RESISTOR 1 4W10K 5 SHAPED 10 1 R507 5 CARBON FILM RESISTOR 1 4W1M 5 SHAPED 10 1 R504 6 METAL FILM RESISTOR 1 4W4 7K...

Page 39: ...m 1 CN504 42 SOCKET 2P 8 0mm 2 2 BCN501 BCN502 43 CONNECTION CORDS 0 6 SHAPED 7 5mm 2 J506 J503 44 CONNECTION CORDS 0 6 SHAPED 10mm 4 L502 J501 J505 45 CONNECTION CORDS 0 6 SHAPED 12 5mm 2 J507 J502 4...

Page 40: ...FLAT CABLE 6P80 2 5 2 SOCKET WITH NEEDLE 1 XS601 25 MICROPHONE SOCKET CK3 6 35 106 2 MIC601 MIC602 26 CONNECTION CORDS 0 6 SHAPED 7 5mm 3 JP601 JP602 JP603 4 OUTPUT BOARD MATERIAL SPECIFICATIONS PART...

Page 41: ...EL MATERIAL SPECIFICATIONS PART NUMBER QUANTITY LOCATION 1 SOFT SPONGE 10 10 6 DOUBLE FACED HARD 1 FOR IR SENSOR 2 CARBON FILM RESISTOR 1 4W100 5 1 R411 3 CARBON FILM RESISTOR 1 4W51K 5 1 R401 4 LIGHT...

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