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Samsung SW-248B, Service Manual, Page: 11 / 26

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Samsung SW-248B Service Manual Download Page 11

10

Disassembly and assembly

MAIN-PCB

Exterior and PCB disassembly

Figure - Disassembly connector

1) Disassemble the PICK-UP FPC¶Â in PCB.

2) Disassemble the FFC¶Êbetween Main PCB and Front PCB.

3) Disassemble the FFC¶Ábetween Main PCB and Front PCB.

4) Push 2hooks¶Ëfor PCB fixing in deck.

5) Disassemble the MAIN-PCB

¶È

6) Remove soldering at motor connection wire¶ÍPCB.

7) Press 2hooks¶Îfor PCB fixing in deck and Disassemble the FRONT-PCB 

Summary of Contents for SW-248B

Page 1: ...replacement Exploded Views Part List Packing Options Block Diagram Troubleshooting Circuit Diagram Main Components Block Diagram Pin Descriptions Electrical Parts List The design and part of this product is subject to change without prior notice for performance improvement CONTENTS SERVICE Manual SW 248B CD R RW DRIVE ...

Page 2: ... Keep away from TV or other electrical units at repair to prevent influence from surrounding units 4 If you replace the parts during repair be sure to unplug the power cable before replacement 5 If you insert a disc into the drive be sure to load it corectly 6 Because this unit can t be used by itself surely mount it on PC 586 DMA support and check the operations in use of private device driver fl...

Page 3: ...ay generate the enough charge to damage ESD unit Note Be sure to avoid the power impression to the shassis or circuit and observe the safety instruction 1 Read all safety and operational manuals before operating this product 2 Keep the safety and operational manuals for future reference 3 Observe all precations and operational instructions in or on the surface of this product 4 Follow all operatio...

Page 4: ... Rear Digital output terminal Optional Sound output terminal Master Slave select pin Interface terminal Power terminal External Part Name Earphhone jack Stop Open button Emergency HOLE Up Down Volume LED Disc tray ...

Page 5: ...4 Disassembly Diagram ...

Page 6: ...P4 5mm BG61 00180A 6 GUIDE PU POM NW 02 BG61 00122A 7 SHAFT PU R SUS420J2 õ3 0 L85 5mm BG31 00036A 8 MOTOR SPINDLE RSM 2615A DMBSPC75A FFC SPM 15 PIN BG97 02247A 9 ASSY TURN TABLE BG59 00017A TURN TABLE ABS ADC12 BG63 00084A COVER T T ABS SN PLATE T0 6 BG59 00018A TURN TABLE BALL STEEL Õ2 5 11EA BG73 00026A RUBBER T T ABS CR NEO B 6150 BG59 00019A MAGNET T1 5 BG61 00018A BRKT T T SECC T1 0 BG30 00...

Page 7: ...igure Door tray 1 Supply power to open the tray Êin direction of arrow A 2 Lift up the door  in direction of arrow B 3 Close the tray Êand power off Reference If the tray Êdoesn t open push the clip3 into specified hole shown in detailed figure to open it compulsorily ...

Page 8: ...7 Disassembly and assembly Panel front Exterior and PCB disassembly 1 Remove 6 hooks  2 Take out the panel front Êforward Figure Panel front ...

Page 9: ...8 Disassembly and assembly Top cabinet Exterior and PCB disassembly Figure Top cabinet 1 Remove 4screws  in the bottom 2 Lift up the top cabinet Ê ...

Page 10: ...9 Disassembly and assembly Ass y frame Low Exterior and PCB disassembly Figure Ass y frame Low 1 Lift up the ass y frame Ê low ...

Page 11: ... PICK UP FPC Â in PCB 2 Disassemble the FFC Êbetween Main PCB and Front PCB 3 Disassemble the FFC Ábetween Main PCB and Front PCB 4 Push 2hooks Ëfor PCB fixing in deck 5 Disassemble the MAIN PCB È 6 Remove soldering at motor connection wire ÍPCB 7 Press 2hooks Îfor PCB fixing in deck and Disassemble the FRONT PCB ...

Page 12: ...11 Disassembly and assembly Tray Deck disassembly Figure Tray 1 Push 2hooks  2 Take out the Tray Êin direction of arrow ...

Page 13: ...nd assembly Ass y Deck Deck disassembly Figure Ass y Deck 1 Move the slide cam  in left direction 2 Remove screws Ê 3 Disassemble the Ass y feeding Áin arrow B direction with pushing the 2hooks in direction of arrow A ...

Page 14: ...352A MANUAL USERS 1EA 7 BG95 50004A ASSY SCREW 1EA 8 BG60 12001H SCREW MACHINE M3 6 1EA 9 BG39 30002A BAG PE 1EA 10 BG39 00010A CABLE IF SR 380MM 1EA 11 BG39 42001B CABLE WIRE HARNESS 4P 3P N UL2547 UL 1061 4EA 12 BG69 30307A BAG PE T0 05 1EA 13 0203 001222 TAPE MASKING PP BEING 0 34M 14 BG68 00355A LABEL RATING SW 224B DOM ART PAPER 1EA 15 BG68 50005A LABEL QMS ART PAPER 1EA 16 BG68 00296C LABEL ...

Page 15: ...14 Block Diagram ...

Page 16: ...Y When you transfer the PICK UP to the outer cycle and turn the power on dose it move to the inner one Y TRAY IN OUT Y Refer to NO SLED operation Refer to Check TRAY IN OUT Refer to check LASER DIODE ON LASER DIODE ON Check the connection of the power short and cable If the power of RL3E804 RL5E935 is normal when you check replace X201 X301 N N If the power of ICIC502 3pin is normal when you check...

Page 17: ...16 FOCUS UP DOWN Y FOCUS LOCK Y DISC rotation Y SPINDLE LOCK Y AUDIO OUTPUT Y WRITING Normall Refer to FOCUS LOCK N N N N N Refer to NO DISC ROTATION N Refer to NO AUDIO OUTPUT N Refer to NO WRITING N ...

Page 18: ...SLED operation of normal If the constant of IC301 and GND pattern s when you check replace Y Y N N If the constant of IC401 and GND pattern s when you check replace N The below waveform is outputted in IC301 1 99pin Y Y Replace stepping Motor Y The below waveform is outputted in IC401 35 37pin Y No SLED OPERATION ...

Page 19: ...If they are normal replace IC401 N When pressing the EJECT SW does the IC401 Pin26 vary from 1 65V to the value between 1 15V and 2 15V and then show 0V finally N Is the Tray Motor able to output the Pin49 and 50 of IC401 Replace TRAY MOTER Y When pressing the EJECT SW does the peak value of the IC301 3Pin become 3 3V Y When it is in the Tray Open mode does the IC301 6Pin show 1 65V Y When pressin...

Page 20: ...t through 71pin of CN101 Y Replace PICK UP No LASER DIODE ON Try again after a normal insertion of the connector into CN10 N Try again after replace of FPC Wire N If the pattern of IC101 and sodering is normal when you checked replace IC301 If the time transfer 71pin of IC101 and soldering are ok is when you checked replace IC101 N N The value of voltage can be modified slightly depending on the r...

Page 21: ...1 45 46pin FOCUS UP DOWN Dose the S curve below come out of the 76 TP FE pin of IC101after insertion of a disc Is the waveform above input through the 128pin of IC201 Y Y If the power of IC201 and GND soldering is normal when you check replace IC201 N N The below waveform CH B is outputted in IC201 132pin N N N N Y 1 Is the FPC Wire inserted normally into the CN10 2 Isn t the FPC wire disconnected...

Page 22: ...1 Is the waveform below output through 140pin of IC201 Y N Y Is the waveform above input through 24pin of IC401 Y Does output but spindle Motor rotate Replace MOTOR Y Y N If the power of IC401 and pattern s soldering is normal when you check replace IC401 N N N No SPINDLE MOTOR ROTATION ...

Page 23: ...ring is normal when you check replace IC200 Y Is the audio output from the 11 13pin of CN30 Y Is the audio input from the JK701 Y Check the connection of the JK701 is and normal when you checked replace JK701 No AUDIO OUTPUT 22 N Replace FRONT PCB N Check the connection of the CN30 is and normal when you checked replace VR701 N ...

Page 24: ...t work properly Was the Power Calibration executed properly When writing the records does the voltage at the PIN 20 XWGATE of CN10 decrease from 5V to 0V N Check the condition of the power at CN10 GND and the welded part If they are normal replace IC101 N N Y Y Y Replace P UP or the entire MECHA N ...

Page 25: ...24 Circuit Diagram Main ...

Page 26: ...25 Circuit Diagram Front ...

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