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Содержание RXDT630

Страница 1: ...RCUIT BOARD 5 FUNCTION OF IC TERMINALS Middle Near East 2 SCHEMATIC DIAGRAM 6 NEW DIGITAL SERVO CIRCUIT and Africa 3 TROUBLESHOOTING GUIDE 8 CD UNIT PARTS LOCATION 4 BLOCK DIAGRAM 9 CD REPLACEMENT PAR...

Страница 2: ...viewed from the copper pattern side AN8802SCE1V AN8389SE1 MN66271RA 2S5B709STW C VREF Included in this supplement are the CD drive Printed Circuit Board diagram and Schematic diagram for the new modif...

Страница 3: ...N8389SE FOCUS COIL TRACKING COIL A TRAVERSE MOTOR M702 Bes SPINOLE MOTOR DRIVE SPINDLE M OG MOTOR Oo 6 B Np We 0 5V ievie O VO TP35 ate TP 37 OO Cc M701 1 re TRAVERSE mo MOTOR oe E C D O TP38 i i N Ts...

Страница 4: ...ck once and then toward outer track slightly 2 or 3mm Does lens make NO vertical movements YES Does laser diode NO come on YES Loadthe test disc Remains at te KH Check pin 8 of IC701 REDET Above 0 6 V...

Страница 5: ...ee 3 LTE PROCESSOR x Gaye x _ Role aaa D A CONVERTER 36 LOFT Servo 37 ATRCR on CRCC al Servo Check X701 CPU ICB02 S8054HN T RESET SIGNAL GENERATOR Q Code Register ee eee 4 Microcomputer bs a VR701 Ss...

Страница 6: ...a rs SECO RX Yy Alternately adjust the two mechanical adjusting screws with the 2 0mm allen wrench SZZP1101C until the RF signal amplitude on the oscilloscope is maximized Refer to Fig 2 on page 10 Ma...

Страница 7: ...t Power Supply Input for digital circuit ae bvsst GND Serial data output Not used open for digital circuit 0 digita audio interface signal output Microprocessor command clock signal input Latches data...

Страница 8: ...output Not used open CLK input for sub code serial data 96 SBCK Le Not used open x tal oscillating cct input f 16 9344MHz nen X tal oscillating cct output f 16 9344MHz oOOo O OT U1 a RS ak Power suppl...

Страница 9: ...fset 2 Tracking offset 3 Focus gain 4 Tracking gain and 5 Tracking balance Therefore the above mentioned 6 electrical adjustments are discarded in the new digital servo circuit The unit optimizes the...

Страница 10: ...Ref No Part No Values Remarks i to tnON Rs trm Jo jj No 00 BwKho es C cSTIwar 5 ERJ6GEYJ392V 1 10W 3 9K 1 10W 100 R738 ERJ6GEYJ223V W 10OW 22K R739 ERJ6OGEYJ681V W 10W 680 R741 743 ERJ6GEYJ562V 1 10W...

Страница 11: ...f No Part Name Description Remarks aaa leo CABINET CHASSIS 7 M 6 1 RMSO123 1 RMS0350 PIN B eel RAE0111Z TRAVERSE DECK UNIT RDV0023 BELT Remarks Part Name Description Ee RUBBER A RUBBER B SCREW 89 RMRO...

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