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Sharp GX-CD30 Service Manual

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Illustration: GX-CD130
IMPORTANT SERVICE NOTES (FOR GX-CD30/130 ONLY) .......................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
DISASSEMBLY .................................................................................................................................................................. 4
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 6
ADJUSTMENT ................................................................................................................................................................... 8
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 10
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 13
TYPES OF TRANSISTOR ............................................................................................................................................... 13
BLOCK DIAGRAM ........................................................................................................................................................... 14
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 18
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 27
FUNCTION TABLE OF IC ................................................................................................................................................ 28
PARTS GUIDE/EXPLODED VIEW
DIFFERENCE BETWEEN GX-CD30/30C AND GX-CD130/130C
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SERVICE MANUAL
REMOTE
CONTROL
X-BASS
SHARP CORPORATION
SHARP ELECTRONICS CORPORATION
Service Headquarters:
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• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified
should be used.
CONTENTS
GX-CD30/30C
GX-CD130/130C
None
Used
None
Used
Sharp Plaza,
Mahwah, New Jersey 07430-2135
GX-CD30/30C/130/130C
No. S3607GX-CD130
GX-CD30
GX-CD30C
GX-CD130
GX-CD130C
Page

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  Summary of Contents for Sharp GX-CD30

  • Page 1: Table Of Contents

    CONTENTS Page IMPORTANT SERVICE NOTES (FOR GX-CD30/130 ONLY) ..................2 SPECIFICATIONS ................................2 NAMES OF PARTS ................................3 DISASSEMBLY .................................. 4 REMOVING AND REINSTALLING THE MAIN PARTS ..................... 6 ADJUSTMENT ...................................
  • Page 2: Important Service Notes (For Gx-Cd30/130 Only)

    GX-CD30/30C/130/130C FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. IMPORTANT SERVICE NOTES (FOR GX-CD30/130 ONLY) BEFORE RETURNING THE AUDIO PRODUCT (Fire & Shock Hazard) Before returning the audio product to the user, perform the following safety checks.
  • Page 3: Names Of Parts

    GX-CD30/30C/130/130C NAMES OF PARTS H Main Unit 1. CD Play Indicator: 0 0 0 0 0 2. CD Repeat Indicator: R R R R R 3. CD Track Number Indicator 4. CD Eject Button: 7 7 7 7 7 5. Remote Control Sensor (GX-CD130/130C ONLY) 6.
  • Page 4: Disassembly

    GX-CD30/30C/130/130C DISASSEMBLY Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance: ( A3 ) x1 Front 1. Take cassette tape and compact disc out of the unit.
  • Page 5 GX-CD30/30C/130/130C Front Cabinet Rear Cabinet Power PWB ( L1 ) x1 ø3 x10mm ( F1 ) x6 Terminal ø3 x10mm ( L1 ) x3 ( L2 ) x1 ø3 x10mm Push Driver Tape Mechanism Figure 5-1 Figure 5-4 Display ( J1 ) x3 Front Panel ø3 x10mm...
  • Page 6: Removing And Reinstalling The Main Parts

    GX-CD30/30C/130/130C REMOVING AND REINSTALLING THE MAIN PARTS TAPE MECHANISM SECTION TAPE 1 Record/Playback Erase Head Perform steps 1, 2, 3, 4, 5 and 6 of the disassembly method Head to remove the tape mechanism. How to remove the record/playback and erase ( B1 ) x2 heads (TAPE 1) (See Fig.
  • Page 7: Cd Mechanism Section

    GX-CD30/30C/130/130C CD MECHANISM SECTION Perform steps 1, 2, 9 and 10 of the disassembly method to remove the CD mechanism. ( F1 ) x2 CD Cover How to remove the pickup (See Fig. 7-1.) 1. Remove the hooks (F1) x 4 pcs., to remove the CD cover.
  • Page 8: Adjustment

    GX-CD30/30C/130/130C ADJUSTMENT MECHANISM SECTION TUNER SECTION • Driving Force Check fL: Low-range frequency fH: High-range frequency Torque Meter Specified Value • FM IF/RF PLAY: TW-2412 Tape 1: Over 50 g Tape 2: Over 100 g Test Stage Specified Instrument Value/Adjusting Connection •...
  • Page 9 GX-CD30/30C/130/130C CD SECTION Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is necessary to reajust it. Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.
  • Page 10: Troubleshooting (Cd Section)

    GX-CD30/30C/130/130C TROUBLESHOOTING (CD SECTION) When the CD does not function When the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.Clean the objective lens,and check the playback operation.When this section does not operate even after the above step is taken,check the following items.
  • Page 11 GX-CD30/30C/130/130C • Playback can only be performed when a disc is loaded. Check the laser diode driver. Is the Focus servo active? (Can you hear it working?) Check the area around IC801(16) - (21) (focus servo circuit). Does the DRF signal change from "L" to "H"?
  • Page 12 GX-CD30/30C/130/130C • Checking the spin system. Play operation is performed without disc. The spin driver circuit is normal. The turntable rotates a little. Check the periphery of IC801 pins 23 to 27, pin 39 and pin 40, The turntable fails to rotate or rotates at high speed.
  • Page 13: Notes On Schematic Diagram

    GX-CD30/30C/130/130C NOTES ON SCHEMATIC DIAGRAM • Resistor: 1. Tuner To differentiate the units of resistors, the symbol as K and M ( ): AM mode are used: the symbol K means 1000 ohm and the symbol M Marking except for ( ): FM mode means 1000 kohm and the resistor without any symbol is an 2.
  • Page 14: Block Diagram

    GX-CD30/30C/130/130C CD LID OPEN/CLOSE SW761 OPERATION SW771~SW775 CFW772 RX771 LCD771 REMOTE CD LCD SENSOR LASER PICKUP UNIT DRIVER X701 Q805 4.19MHz 60 41 44 30 33 22 FIN2 FIN1 IC701 LA92 VLC3 IX0105AW SERVO SYSTEM FOCUS COIL MICROCOMPUTER SL– TRACKING COIL SL–...
  • Page 15 GX-CD30/30C/130/130C LASER RIVER Q805 XL801 16.93MHz CNP851 R-CH EFMO IC801 IC802 GND (A) EFMIN LA9240M LC78622E MAIN L-CH CLV+ LCHO SECTION SERVO AMP. SERVO/SIGNAL CLV– +7.4V (D) +7.4V (CD) CONTROL GND (D) JP– TOFF – RES. CQCK. COIN JP– SQOUT. RWC. WRQ...
  • Page 16 GX-CD30/30C/130/130C ROD ANTENNA AM IF LA1186N FM FRONT END FM IF 10.7MHz RF AMP B. P. F LA1805 FM/AM IF MPX. FM RF FM OSC REG. FW851 R-CH AM BAR ANT. AUDIO L-CH FROM CD CD+7.3V SECTION POWER GND TONE MUTE SYNC.
  • Page 17 GX-CD30/30C/130/130C SW501-C POWER/FUNCTION 455kHz FM DET TUNER VCO MONO TUNER +B FM +B PILOT TRIG. DET. FM-IF POST DRIV. DET. AMP. MUTE LEVEL-DET. PHASE DET. AM-IF DET. DRIV. DECODER SWIT. 19 18 AM OSC IC501 LA4597 POWER AMP. X-BASS VOLUME...
  • Page 18: Schematic Diagram / Wiring Side Of P.w.board

    GX-CD30/30C/130/130C LASER DRIVER Q805 KTA1266GR 1.8V R842 2.2V C849 0.022 C848 1/50 C838 0.01 C839 1/50 R871 C850 4.7K 56 55 54 53 52 51 50 49 – FIN2 – FIN1 – FEBAL – – – FOSTA C803 – 0.1/50...
  • Page 19 GX-CD30/30C/130/130C PICKUP UNIT 1/16 R801 C802 C801 47/10 0.01 LT0H30M1 TR– TR– C847 R860 0.01 FO– FO– FO– TR– ACTUATOR IC802 CNS801 LC78622E 61 60 56 55 53 52 SERVO/SIGNAL CONTOL EFLG DEFI U-COM SBSY SUB-CODE FO– INTERFACE TR– XVSS...
  • Page 20 GX-CD30/30C/130/130C FW772 FW772 SW761 CD LID OPEN/CLOSE DISPLAY PWB-A2 Q740 SWITCH PWB-A5 130/130C ONLY FW603 TO MAIN PWB RX771 CNP603 P25 10 - A 30/30C ONLY IC701 LCD771 SW774 DOWN/ REVIEW SW773 UP/CUE SW772 STOP SW771 PLAY/REPEAT SW775 PAUSE The numbers are waveform numbers shown in page 27.
  • Page 21 GX-CD30/30C/130/130C M701 SPIN MOTOR CD MOTOR PWB-E PICKUP UNIT SW702 PICKUP IN M702 SLIDE MOTOR CNP803 CNS801 2 3 4 5 6 7 8 12 10 CD SERVO PWB-D CNS802 Q805 C848 C807 CNS803 R812 R806 R805 R810 C813 R842...
  • Page 22 GX-CD30/30C/130/130C B. P. F. FM FRONT END ANT. 820K 330K 0.022 LA1186N RF AMP 1.2K 0.022 220/10 470P CNW2 6.8K 1.6V 3.3/50 (CH) 1.6V FM DET. 3.3/50 0.001 1.2V 1.6V 1.7V (0V) 10/16 FM DET AM OUT MPX-IN FM-M/ST (CH)
  • Page 23 GX-CD30/30C/130/130C MAIN PWB-A1 (130/130C ONLY) R577 POWER AMP. C567 C561 R561 0.0027 0.027 M AUTO 2.7K VOLUME IC501 MUTING C583 R578 C569 LA4597 VR531-A C579 TWEETER Q551 1000/10 1/50 20K (B) 100/10 C509 KTC3199 GR SW501-A 5.8V 0.027 SW500-A L-CH...
  • Page 24 GX-CD30/30C/130/130C TUNER PWB-B ROD ANNTENA (236) AM IF COLOR TABLE FM DET BROWN (233) R D ( R ) ORANGE YELLOW GREEN BLUE VIOLET CNW2 GRAY FM IF W H ( W ) WHITE BLACK PINK AM BAR ANTENNA T651...
  • Page 25 GX-CD30/30C/130/130C P20 6 - D [130/130C ONLY] TO DISP PWB TO DISP PWB SW351 SW500 FW603 BEAT CANCEL SW501 X-BASS FUNCTION FM AUTO VR531 VR532 TAPE VOLUME TONE HIGH POWER R518 130/130C C567 C565 R565 ONLY C509 R517 130/130C ONLY...
  • Page 26 GX-CD30/30C/130/130C DISPLAY PWB-A2 SW774 DOWN/ R771 REVIEW 3.9K REMOTE SW773 SENSOR UP/CUE R772 RX771 2.7K SW775 PAUSE R773 1.8K SW771 PLAY/ LCD771 R774 REPEAT 1.5K SW772 R779 STOP SWITCH PWB-A5 130/130C ONLY R708 FW772 SW761 CD LID OPEN/CLOSE IC701 NO. VOLTAGE NO.
  • Page 27: Waveforms Of Cd Circuit

    GX-CD30/30C/130/130C FUNCTION TABLE OF IC IC701 RH-iX0105AWZZ (IX0105AW): System Control Microcomputer Pin No. Terminal Port Name Input/ Function Name Output MTCONT2 Input/Output Used to input or output 4 bits at a time. When the output latch is set to "1", the unit will be in the input mode.
  • Page 28 “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the For U.S.A. only following information. Contact your nearest SHARP Parts Distributor to order. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll-Free;...
  • Page 29 GX-CD30/30C/130/130C PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK INTEGRATED CIRCUITS CAPACITORS AA 0.001 µF,50V VHILA1186N/-1 AE FM Front End,LA1186N VCKYMN1HB102K J VHILA1805//-1 AM FM/AM IF MPX.,LA1805 VCCCPA1HH220J AA 22 pF (CH),50V IC201 VHIANT345K/-1 AM Playback and Record/ Playback...
  • Page 30 GX-CD30/30C/130/130C PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK AA 0.01 µF,16V C801 VCTYMN1CY103N J R254 VRD-MN2BD223J AA 22 kohms,1/8W AB 47 µF,10V,Electrolytic C802 RC-GZA476AF1A R262 VRD-MN2BD472J AA 4.7 kohms,1/8W AB 0.1 µF,50V,Electrolytic C803 RC-GZA104AF1H R264 VRD-MN2BD104J AA 100 kohm,1/8W AA 0.001 µF,50V...
  • Page 31 GX-CD30/30C/130/130C PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R834 VRD-MN2BD102J AA 1 kohm,1/8W SW775 QSW-K0003AWZZ J AD Switch,Key Type [CD-Pause] R835 VRD-MN2BD471J AA 470 ohms,1/8W DECK MECHANISM PARTS R836,837 VRD-MN2BD473J AA 47 kohms,1/8W R838 VRD-MN2BD333J AA 33 kohms,1/8W...
  • Page 32 GX-CD30/30C/130/130C PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK M702 92LMTR1854BASY J AP Motor with Gear [Slide] TLABH0042AWSA AE Cassette Label,Tape 2 SW702 QSW-F9001AWZZ AE Switch,Push Type [Pickup In] [130/130C] TLABH0042AWSB AE Cassette Label,Tape 2 [30/30C] CABINET PARTS LX-CZ0011AFFD AA Screw,ø3×65mm...
  • Page 33 GX-CD30/30C/130/130C — M E M O — – 5 – Downloaded from www.Manualslib.com manuals search engine...
  • Page 34 GX-CD30/30C/130/130C — M E M O — – 6 – Downloaded from www.Manualslib.com manuals search engine...
  • Page 35 GX-CD30/30C/130/130C 306-2 306-1 306-3 703x2 M701 M702 305x2 SW702 PWB-E Figure 7 CD MECHANISM EXPLODED VIEW – 7 – Downloaded from www.Manualslib.com manuals search engine...
  • Page 36 GX-CD30/30C/130/130C TAPE 1 TAPE 2 SW607 SW606 SW605 52 504 501x2 BELT CONNECTION M601 ( TAPE 2 ) ( TAPE 1 ) Figure 8 TAPE MECHANISM EXPLODED VIEW – 8 – Downloaded from www.Manualslib.com manuals search engine...
  • Page 37 GX-CD30/30C/130/130C GX-CD30C/130C Only 603x4 602x2 PWB-A5 PWB-A2 606x2 PWB-A4 PWB-A3 606 250 606x3 LCD771 612x3 MECHANISM 611x3 PWB-C PWB-D Silicon 211-1 Grease 211-2 IC501 606x3 Q405 606x2 PWB-A1 605x2 201-1 CNW2 605x2 606x4 PWB-B TAPE MECHANISM 206-1 616x2 206-2 616x2...
  • Page 38 GX-CD30/30C/130/130C Figure 10 SPEAKER BOX VIEW – 10 – Downloaded from www.Manualslib.com manuals search engine...
  • Page 39: Packing Of The Set (For Gx-Cd30/130 Only)

    SPAKA0094AWZZ Packing Case SPAKC0342AWZZ [130] SPAKC0346AWZZ [30] : Not Replaceable Items A9603-3632NS•KJ•M Writer and Editor: Quality & Reliability Control Center of Communication & Audio Systems Group, Sharp Corp. Printed in Japan SC • SL Downloaded from www.Manualslib.com manuals search engine...

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