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Roadstar GCDR 105 Service Manual

Portable cd player with fm/am tuner
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Summary of Contents for Roadstar GCDR 105

  • Page 1 GCDR 105...
  • Page 2 INDEX 1.WARNING AND TECHNICAL SPECIFICATION 2.ALIGNMENT 3.BLOCK DIAGRAM 6-10 4.FUNCTION DIAGRAM 5.SPECIFICATION 12-13 6.VOLTAGE TABLE 14-15 7.TROUBLESHOOTING 16-17 8.DISASSEMBLY INSTRUCTION 9.EXPLOSION DIAGRAM AND BOM 10.WIRE ASSEMBLY DIAGRAM 11.PRINCIPLE DIAGRAM 21-22 12.REPAIR DIAGRAM 13.MATERIAL BILL OF APPLIANCE 24-26...
  • Page 3 WARNING: FOR CONTINUED SAFETY THE FOLLOWING PRECAUTIONS SHOULD BE FOLLOWED DURING SERVICING. 1.MAKE SURE POWER CORD IS DISCONNECTED BEFORE REPLACING ANY PART. 2.REPLACE WITH TYPE, CRITICAL PARTS WITH! MAKE ON THIS DIAGRAM. 3.THE FOLLOWING TEST MUST BE IMPLEMENTED AFTER EACH REPAIR BEFORE RETURNING IT TO CUSTOMER.USE AN OHM-METER TO MEASURE THE F.C.

  • Page 4: Alignment

    ALIGNMENT PROCEDURES INSTRUMENTS REQUIRED: AM&FM Signal generator IF Scope&2tracks Oscilloscope AM IF ALIGNMENT Set output of signal generator no higher than necessary to obtain an output reading. Slide the function switch to the tuner position and the band switch to the AM position. Set volume control to reference output.

  • Page 5: Alignment

    ALIGNMENT INSTRUCTIONS FOR CASSETTE TAPE DECK Figure as diagram: HEAD AZIMUTH: While playing test tape (6K3Hz) Adjust azimuth screw on the left side of the tape head for maximum output for both L/R channel INSTRUMENT REQUIRED: A. AC VOLTMETER B. FREQUENCY COUNTER...
  • Page 7 UTC 2025...

  • Page 12: Specification

    SPECIFICATION Power source AC230 V 50Hz Load impedance 8 ohm Reference output 50 Mw 10% THD output 0.8 W x2 Speaker 8 ohm x2 Recording system Magnet Erase BAND:AM,1KHz 30% MOD Characteristic Unit Limit Frequency 1020 Range High lntermediate Frequency 1000 Useable 600kHz...
  • Page 13 TEST DISC :SONY TYPE 4 FUNCTION :PLAY/PAUSE.STOP SKIP(<<&>>),REPEAT PLAY DISPLAY :LCD MULTI DISPLAY DIGITAL SIGNAL PROCESSING OPTIC PICK-UP :BEAM LASER ERROR CORRECTION :CROSS INTERLEA VED REED-SOLOMON CODE DIGITAL FILTER :18-BIT LINEAR SAMPLING RATE :2 TIMES ltem Unit Limit Frequency Response 100Hz/16KHz ±3 S/N Ratio lnterruption information layer...
  • Page 14 MAIN UNIT VOLTAGE CHARTS IC & TRANSISTORS VOLTAGE CHARTS U803 IC802 IC401 IC801 IC101 U803 IC802 LC78602R LC78602R LA9242 TC2025 KA9258 LA1824 LA9242 0.01 2.46 10.5 3.83 2.82 4.98 2.46 3.78 2.81 4.97 2.17 4.98 0.05 0.59 2.17 0.01 0.01 1.56 2.47 7.57...
  • Page 15 TRANSISTORS 型号 Q431 C2001 Q402 C945 Q401 C945 Q803 C945 Q806 C945 Q441 D882 Q801 B764 Q816 C2001 Q804 A733 Q805 A733 1346 Q807 1346 Q808 1317 Q802...

  • Page 16: Troubleshooting

    TROUBLE SHOOTING Circuit Symptom Cause and Remedy General No sound 1.Speakers are not connected. Check the speaker connection 2.Wrong function is selected. Set switch to the proper position. 3.Defective volume control. Set the volume control to a proper sound level 4.Defective earphone jack.

  • Page 17: Troubleshooting

    TROUBLE SHOOTING Circuit Symptom Cause and Remedy Cannot read the the 1.The inserted disc is upside down. table of contents. Insert disc correctly. No display. 2.Disc is dirty. No sound. Wipe it with a piece of soft colth. 3.Disc is seriously hed. Use a new disc.

  • Page 18: Disassembly Instruction

    DISASSEMBLY INSTRUCTION...
  • Page 24 P003A 2B 0.8W REPLACEMENT PARTS LIST REF . NO PART NUMBER DESCRIPTION REF . NO PART NUMBER DESCRIPTION IC401 134-0002025-00 UTC2025 PCB-1181(AM OSC COIL) T101 102-0000456-94 NA0456 YELLOW 7mm IC801 134-KA9258D-00 KA9258D/SA9258/CSC9258/MM1469 L104 102-0002374-92 NO2374 RED 7mm IC802 134-LA9242M-00 LA9242M-MPB T102 102-0009650-96 MH9650 BLUE 7mm...
  • Page 25 REF . NO PART NUMBER REF . NO PART NUMBER DESCRIPTION DESCRIPTION R407.408 113-2281252-01 2.2Ω 1/8W C106 123-2005003-05 20PF/50V R809.810 113-2741252-01 270k 1/8W C431.432 123-2035003-05 0.02uF/50V R101.139 113-3311252-01 330Ω 1/8W C433.434 123-2035003-05 0.02uF/50V R854.873 113-3311252-01 330Ω 1/8W C436.446 123-2035003-05 0.02uF/50V R874.875 113-3311252-01 330Ω...
  • Page 26 REF . NO PART NUMBER REF . NO DESCRIPTION PART NUMBER DESCRIPTION C127 127-2285003-05 2.2uF/50V C818 127-2295003-05 0.22uF/50V C819.843 127-3385003-05 3.3uF/50V C866.867 127-3385003-05 3.3uF/50V C832 127-3395003-05 0.33uF/50V C834.447 127-4701603-05 47uF/16V C411.412 127-4711003-05 470uF/10V C448 127-4711003-05 470uF/10V C122.303 127-4785003-05 4.7uF/50V C304.403 127-4785003-05 4.7uF/50V C404.856...