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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.

4

.1.1. Worktable grounding

1.

 

Put a conductive material(sheet)or iron sheet on the area where the optical pickup is placed,and ground the

4

.1.2.Human body grounding

1 Use the anti-static wrist strap to discharge the static electricity f

ro

m your body.

4

.1.3.Hand

l

ing of optical pickup

1.

 

To keep the good quality of the optical pickup maintenance parts during transportation and before

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 use a tester to check the laser diode for the optical pickup .Failure to do so willdamage the laser

diode due to the power supply in the tester.

4

.2.

 

Hand

l

ing precautions for Traverse Unit (Optical Pickup)

1.

 

Do not give a considerable shock to the traverse unit(optical pickup)as it has an extremely high-precise

 structure.
2.

 

When replacing the optical pickup,

 

install the flexible cable and cut is short land with a nipper.

 

See the 

optical pickup replacement procedure in this Technical Guide.

 

Before replacing the traverse unit,

 

remove

the short pin for preventingstatic electricity and install a new unit.Connect the connector as short times as
possible.
3.

 

The flexible cable may be cut off if an excessive force is applied to it.Use caution when handling the cable.

4.

 

The half-fixed resistor for laser power adjustment cannot be adjusted.

 

Do not turn the resistor.

safety_3 (1577x409x2 tiff)

     

sheet

.

 

Содержание DK1000S

Страница 1: ...SERVICE MANUAL DK1000S...

Страница 2: ...ECHANISM UNIT 4 5 1 OPTICAL PICKUP UNIT EXPLOSED VIEW AND PART LIST 4 6 ELECTRICAL CONFIRMATION 7 6 1 VIDEO OUTPUT LUMINANCE SIGNAL CONFIRMATION 7 6 2 VIDEO OUTPUT CHROMINANCE SIGNAL CONFIRMATION 8 7...

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: ...Front Panel Illust rat ion 5 4 6 7 9 2 5 6 4 OPEN CLOSE button PLAY PAUSE button STOP button 3 7 8 PREV button NEXT button POWER switch 9 2 3 Power indicator IR SENSOR Display window 8...

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 pickupUnit 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: ...h a soldering ironafter a circuit isconnected Keep the power source of the pick up protected from internal and external sources of electrical noise Refrain from operation and storage in atmospheres co...

Страница 9: ...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 10: ...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 11: ......

Страница 12: ...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...

Страница 13: ...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 14: ...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 15: ...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 16: ...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 17: ...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 18: ...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 19: ...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 20: ...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 21: ...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 22: ...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 23: ...L DI C405 101 C404 681 R403 4 7K R404 62K 5V 5V R405 75R 5V 5V GND CE CL DI DO C403 103 C402 103 DNS DNS B C E Q401 8050D R401 1K R402 470R 5V S17 P1 S1 S18 2 3 4 1 5 6 7 XS401 XS07 IR A K LED402 A K...

Страница 24: ...22...

Страница 25: ...16V VD701 1N5819 R707 10K C721 103 C722 104 TC710 470uF 16V DGND R708 10K R709 30K TC709 47uF 25V DGND DGND DGND BS 1 Vin 2 Vsw 3 GND 4 Sync 8 EN 7 Comp 6 FB 5 U701 ZA3020 C723 223 C720 101 L716 10uH...

Страница 26: ......

Страница 27: ...5 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 DQ15 DQ14 R213 1K DQ9 DQ10 DQ11 DQ12 DQ13 DQ8 RAS CAS WE DQM1 LIMIT CS BA0 BA1 DMA10 DMA0 DMA1...

Страница 28: ...T 3 U208 BA033FP DNS VCC DV33 L228 FB VD202 1N4004 VD203 1N4004 IN 3 GND 1 OUT 2 U209 LM1117MP 1 8 DNS C273 104 TC209 220uF 16V R242 3 3K R243 1 5K V18 DV33 VCC AA21 R2140 0R R257 0R DNS R258 0R DNS A...

Страница 29: ...K R2148 6 8K R2152 6 8K R2153 6 8K R2154 6 8K R2155 6 8K C2122 122 C2129 122 C2130 122 C2133 122 C2135 122 C2136 122 VLS 1 SDIN1 2 SDIN2 3 SDIN3 4 SCLK 5 LRCK 6 MCLK 7 VD 8 GND 9 RST 10 SCL 11 SDA 12...

Страница 30: ......

Страница 31: ...SUBSIDIARY BOARD...

Страница 32: ...N502 SW SPST U502 2501 TC502 47uF 50V TC501 47uF 400V D505 HER107 C501 103 1KV C502 101 1KV L503 FB DGND 9V BC503 400V 221 BC503 400V 102 C508 101 C506 104 TC503 1000uF 16V TC505 1000uF 16V R501 470K...

Страница 33: ......

Страница 34: ...4558 C118 273 R117 10K C117 563 R116 18K 3 2 1 8 4 N101A IC4558 R112 30K R113 30K R114 27K C115 10u 16V C114 221 C116 10u 16V SWL SWR SW C108 562 C109 562 C111 562 C112 562 R108 4 7K R104 4 7K R107 5...

Страница 35: ...of File D DK925S 1500 0 DDB Drawn By L R L1 R1 R200 200 VD400 LED VD300 LED VD301 LED R202 470 1 2 3 4 5 6 XP105 CON6 L1 R1 L R GND GND L R L1 R1 GND GND 1 2 3 XP101 CON3 GND GND 9V 9V 1 2 XS110 CON2...

Страница 36: ...4 7 0 5W C145 104 C146 104 1 2 3 XS100 CON2 FL100 T4A L250V C101 224 VD100 1N5404 VD101 1N5404 VD102 1N5404 VD103 1N5404 C100 224 FL101 T4A L250V C102 103 C103 103 C104 103 C105 103 VD110 1N4148 R123...

Страница 37: ...E REVERSE PCS 1 2360016 RECEIVING HEAD HS0038B3V PCS 1 U403 2100004 CONNECTION CORDS 0 6 SHAPED 10mm PCS 1 R406 1631837 PCB 4317 2 PCS 1 1 AV BOARD MATERIAL CODE MATERIAL NAME SPECIFICATIONS UNIT QUAN...

Страница 38: ...IONS UNIT QUANTITY LOCATION 0090106 SMD RESISTOR 1 16W 4 7 5 0603 PCS 4 R1 R2 R5 R6 1562691 PCB A317 0 FRONT PCS 1 0620040 RADIATION DIODE 3B 4SC WHITE WITH BLUE PCS 4 LED01 LED04 2121213 FLAT CABLE 2...

Страница 39: ...8050D PCS 1 V103 07800509 TRIODE S8050D PCS 1 V103 2100003 CONNECTION CORDS 0 6 SHAPED 7 5mm PCS 8 W2 W3 W6 W16 W20 W21 W28 W29 2100004 CONNECTION CORDS 0 6 SHAPED 10mm PCS 10 W4 W5 W7 W8 W9 W15 W17 W...

Страница 40: ...5 2PLUG WITH NEEDLE REVER PCS 1 VOLUME CONTROL BOARD XS110 POWER INDICATION BOARD XP110 5232411 PVC PIECE 33 29 0 5 SINGLE SIDED WITH GLUE IN REAR SIDE PCS 1 SCREEN SHIELDED MANTLE AND PVC PIECE TO P...

Страница 41: ...17 C262 C266 C289 C290 C292 C293 C295 C296 C298 C299 C2101 C2102 C2104 C2105 0310047 SMD CAPACITOR 50V 101 5 NPO 0603 PCS 8 C233 C2111 C2114 C2117 C2120 C2 123 C2126 C206 0310051 SMD CAPACITOR 50V 33...

Страница 42: ...58 SOP PCS 3 U219 U220 U221 0880322 IC MM74HCU04M SOP PCS 1 U205 0880513 IC HCU04 SOP PCS 1 U205 0881415 IC HY57V641620HGT 7 TSOP PCS 1 U211 881872 IC KSV464P4JA 70 TSOP PCS 1 U211 0881182 IC LM1117MP...

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