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Samsung SW-248B Service Manual

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Samsung SW-248B User Manual
Samsung SW-248B User Guide
Samsung SW-248B Online Manual

Text of Samsung SW-248B User Guide:

  • Samsung SW-248B, • Specifications • Cautions at Service • External Part Name • Necessary equipments and Specifications in needing Service(P/U 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

  • Samsung SW-248B, 1 1. General Specifications - Drive type : Computer built-in - Power consumption : DC +5V, 1.5A DC +12V, 1.5A - Dimensions : 146mm (W)X42mm (H)X184mm (L) - Net Weight : 750g 2. Electrical Features - Interface : ATAPI BUS(IDE) - Data transfer rate : Write(CD-R) : 600KBytes/Sec(4X) 1,200KBytes/Sec(8X) 1,800KBytes/Sec(12X) 2,400KBytes/Sec(16X) 3,000KBytes/Sec(20X) 3,600KBytes/Sec(24X) 4,200KBytes/Sec(28X) 4,800KBytes/Sec(32X) Write(CD-RW) : 600KBytes/Sec(4X) Write(High Speed CD-RW) : 600KBytes/Sec(4X) 1,500KBytes/Sec(10X) Resd(MAX) : 2,000~6,000KBytes/Sec(CAV 40X) - Access time : 110ms (Random. TYPICAL) - Buffer Capacity : 8Mbyte - Error ratio : Mode 1:

  • Samsung SW-248B, 2 Electricity sensing device Safety instructions Some semiconductor units may be damaged easily by electricity. These elements are called as electricity sensing device(ESD) in general. For example, integrated circuit, field effect transister, semiconductor chip. The following methods have to be used to reduce the accident of element damage generated by electricity. 1) Emit all electric charges in your body through contact with earthing materail at once before handling a semiconductor factor or device including it. In other way, make use of commercial wristlet against electricity It shall be detached before power impression to the unit on testing because of shock. 2) After detachi

  • Samsung SW-248B, 3 1. Front 2. 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 LEDDisc tray

  • Samsung SW-248B, 5 Device Part List PART NAME CODE No SPECFICATION ASSY DECK BG97-02248A - BG60-00009A 1.SCREW TITE M1.7*5(10) LOADING BG97-02250A 1.ASSY LOADING - BG61-00203A 1.MAIN FRAME HIPS(HG1760S) BG66-00061A 2.GEAR TRAY POM(F20-03) BG66-00032A 3.GEAR PULLEY POM(F20-03) BG66-00044A 4.BELT PULLEY CR-70(BLK 1.3t) BG97-00789A 5.ASSY LOADING M/T - BG31-00027A - LOADING MOTOR RF-300CH-11440 ¿Ü BG66-00033A - PULLEY MOTOR POM(F20-03) BG66-00034A 6.LEVER EJECT POM(F20-03) BG66-00062A 7.SLIDE CAM KOCETAL(K700) TRAY DISC BG66-00060A 1.TRAY DISC ABS ( SR-0320D ) FEEDING BG97-02251A 1.ASSY FEEDING - BG61-00078A 1.SUB CHASSIS ABS(GF20%) BG73-00012A 2.RUBBER-INSULATOR BUTHYL

  • Samsung SW-248B, 6 Disassembly and assembly Door-tray Exterior and PCB disassembly Figure - Door-tray 1) Supply power to open the tray¶Êin direction of arrow “A” 2) Lift up the door¶Â 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.

  • Samsung SW-248B, 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

  • 12 Disassembly and assembly Ass’y-Deck Deck disassembly Figure - Ass’y-Deck 1) Move the slide cam¶Â 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”

  • Samsung SW-248B, 13 Packing Diagram and Part List NO CODE-NO DESCRIPTION SPECIFICATION Q’TY 1 BG69-00146A MASTER CATON-BOX DM 3 1/8EA 2 BG69-00147A PACKING-CASE SW-224B/DOM SW-1 MANILA 240g 1EA 3 BG69-00034A CUSHION-SET EPS 2EA 4 BG69-30305A BAG-PE T0.05 2EA 5 BG46-00024A S-W UTILITY 1EA 6 BG68-00352A 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

  • Samsung SW-248B, 15 Trouble Shooting Check the power source and initial state. Is electrity of 5V and 12V normally input after the connecting the power cable ? Y Do RL3E804, RL5E935 oscillate ? Y Dose the voltage of the 1pin of IC502 change from 3.3V ? Y Is electricity of 2.5V normally output from the 3pin of IC503? 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

  • Samsung SW-248B, 16 FOCUS UP / DOWN ? Y FOCUS LOCK ? Y DISC rotation ? Y SPINDLE LOCK ? Y AUDIO OUTPUT ? Y WRITING Normall ? Refer to ‘ FOCUS LOCK ’ NN N N N Refer to ‘ NO DISC ROTATION ’ N Refer to ‘ NO AUDIO OUTPUT ’ N Refer to ‘ NO WRITING ’ N

  • Samsung SW-248B, 17 When you transfer the pick-up to the outer cycle and turn the power on, dose the pick-up move to the inner one ? 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

  • Samsung SW-248B, 18 Is the connector properly inserted into CN30 ? Try the operation after inserting the connector to CN3 properly. Check the SW701 patterns and the welding condition.Replace it if the condition is normal. Y N N Check the SW701 Open and Close patterns and the welding condition. Replace it if the condition is normal. N Check the condition and patterns of R409, R410.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 P

  • Samsung SW-248B, 19 Is the connector inserted normally into the CN10? Y Isn’t there any problem with the FPC Wire ? Y When the SLED is moved to the inner circle, is electricity of about 1.65V output from the 80pin of IC101 ? Y Is electricity of about 1.65V input 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

  • Samsung SW-248B, 20 CH 2 : Focus Up / Down FE CH 3 : S curve CH 4 : Focus Servo On If the power of IC101 and GND, soldering is normal when you check, replace IC101. If the power of IC201 and GND, soldering is normal when you check, replace IC401. If the power of IC201 and GND, constant is normal when you check, replace IC201. The below waveform(CH B) is outputted in ICIC401 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 p

  • Samsung SW-248B, 21 If the power of IC201 and pattern’s, soldering is normal when you check, replace IC201. 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 NN No SPINDLE MOTOR ROTATION

  • Replay of AUDIO after insertion of AUDIO DISC ? Y Is the audio output from the 164, 167pin of IC201 ? If the power of IC401, GND, soldering 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

  • Samsung SW-248B, No WRITING 23 Can WLT216B.EXE be executed properly? When you try to write the records again,does it 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

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