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Sharp CD-EA235V Service Manual
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Sharp CD-EA235V Service Manual

Video cd mini system
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NTSC/PAL
This Service Manual is for the CD-EA235V, which is a minor-
modification model of the CD-E805V. This manual, therefore,
describes only the changed points from the service manual.
(No. S3331CDE805V/) for the following servicing items.
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION ..................................................................................................................................................... 2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY .................................................................................................................................................................. 6
BLOCK DIAGRAM ............................................................................................................................................................. 9
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 34
TYPES OF TRANSISTOR AND LED ............................................................................................................................... 34
VOLTAGE ........................................................................................................................................................................ 35
FL DISPLAY ..................................................................................................................................................................... 36
REPLACEMENT PARTS LIST/EXPLODED VIEW
SERVICE MANUAL
MODEL
CD-EA235V Video CD Mini System consisting of CD-EA235V
(main unit) and CP-EA235 (speaker system).
CONTENTS
SHARP CORPORATION
VIDEO CD MINI SYSTEM
CD-EA235V
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
CD-E805V
ADJUSTMENT ......................................................................... 10
WAVEFORMS OF CD CIRCUIT .............................................. 42
TROUBLESHOOTING ............................................................. 43
FUNCTION TABLE OF IC ....................................................... 47
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CD-EA235V
No. S7364CDEA235V
Page
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Summary of Contents for Sharp CD-EA235V

  • Page 1: Table Of Contents

    NTSC/PAL CD-E805V This Service Manual is for the CD-EA235V, which is a minor- modification model of the CD-E805V. This manual, therefore, Page describes only the changed points from the service manual.

  • Page 2: Safety Precaution For Service Manual

    CD-EA235V SAFETY PRECAUTION FOR SERVICE MANUAL WARNINGS THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES AGAINST EXPOSURE TO THE LASER BEAM.

  • Page 3: Specifications

    CD-EA235V FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS CD-EA235V General CD player Type 3-disc multi-play compact disc player Power source AC 110/127/220/230 - 240 V, 50/60 Hz Signal readout Non-contact, 3-beam semiconductor laser...

  • Page 4: Names Of Parts

    CD-EA235V NAMES OF PARTS CD-EA235V Front panel 1. Disc Tray 2. Timer Set Indicator 3. Video CD Digest/Time Search Button 4. Video CD On Screen Display On/Off Button 5. Video CD Playback Control Button 6. Memory/Set Button 7. On/Stand-by Button 8.
  • Page 5 CD-EA235V CD-EA235V Remote control 1. Remote Control Transmitter 2. Disc Number Select Buttons 3. Disc Memory Button 4. Programme Clear Button 5. Echo Level Up and Down Buttons 6. Karaoke Mode Button 7. Video CD Auto/On Button 8. Video CD Playback Control Auto/Off Button 9.

  • Page 6: Disassembly

    CD-EA235V DISASSEMBLY CD-EA235V Caution on Disassembly Follow the below-mentioned notes when disassembling Top Cabinet the unit and reassembling it, to keep it safe and ensure Front (A1)x2 excellent performance: Panel ø3x12mm 1. Take cassette tape and compact disc out of the unit.
  • Page 7 CD-EA235V (E2)x1 (L2)x1 (E3)x1 (F3)x1 Front Turntable Panel (F2)x1 (E2)x1 (E1)x2 ø3x6mm Loading Power PWB (E4)x1 Tray Transformer (L1)x2 Headphones Main PWB (F2)x1 (F1)x1 (E2)x1 ø3x10mm CD Player Unit Fan Motor Figure 7-1 Figure 7-4 (E2)x1 (M1)x3 Loading Tray Front Panel...
  • Page 8 CD-EA235V (P2)x2 Mechanism (P1)x1 (P1)x1 Loading Tray Figure 8-1 CP-EA235 REMOVAL PROCEDURE FIGURE STEP Speaker Box Tweeter Woofer 1. Front Panel ..... (A1) x1 2. Screw ...... (A2) x4 (B1)x2 ø3x10mm Tweeter 1. Screw ...... (B1) x2 (A2)x4 ø4x12mm (A1)x1...

  • Page 9: Removing And Reinstalling The Main Parts

    CD-EA235V CNP5 16.9344 MHz +3.3V (+B11) CONSTANT +B13 VOLTAGE VDD5 +5V(+B7) VVSS AVDD1 AVDD2 ASDFIN CD RES LVDD ASLRCK CLAMP SW. RVDD XVSS O/C SW XVDD VVDD DISC N.SW LC78637E CD SERVO RVSS DSA_STB LVSS MPEG_POW TEST VREF +3.3V LASER...

  • Page 10: Please Refer To The Cd-E805V, Service Manual Adjustment

    CD-EA235V ANTENNA 10.7 MHz FM IF IC301 CF303 T302 TA7358AP BF301 X351 FM FRONT END CF351 450 kHz B.P.F. 456 kHz SO302 T351 CF352 FM ANTENNA AM IF TERMINAL IC303 AM MIX MO/ST L312 T301 AM IF FM+B LA1832S FM IF DET./ FM/AM FM MPX./AM IF...
  • Page 11 CD-EA235V FL701 FL DISPLAY 44 45 TO TAPE MECHANISM RX701 51 50 40 30 25 13 REMOTE SENSOR IC701 VLOAD IX0554AW SYSTEM MICROCOMPUTER AVDD SW701-SW726 +B PROTECT 20 21 22 23 24 11 12 15 16 17 TO VIDEO CD...

  • Page 12: Schematic Diagram / Wiring Side Of P.w.board

    CD-EA235V CD SIGNAL FM SIGNAL VIDEO SIGNAL PLAYBACK SIGNAL RECORD SIGNAL MIC SIGNAL CNS601 BI601 + – R-CH VREF – R605 INTERFACE LOUT ROUT C608 C607 A_GND 0.12 0.12 R607 C609 3.9K RBASS L-CH C605 LBASS 1/50 CD_GND C606 R613...
  • Page 13 CD-EA235V CNSV1 BIV1 R601 R602 R603 VIDEO OUT R693 C603 22/50 L-CH VREF C610 R691 C691 J635 JK690 1/50 390P 5.6K ROUT VIDEO OUT/AUX IN C608 0.12 R690 C690 R692 R606 5.6K 390P 3.9K RBASS R-CH C612 C606 R688 0.0022 RTRE 0.1(ML)
  • Page 14 CD-EA235V C302 0.001 AM TRACKING C331 0.047 C323 0.022 C338 C332 0.001 0.022 T303 D301 AM ANTENNA DS1SS133 D302 DS1SS133 VD301 T306 SVC348S C335 AM OSC. R358 560P 3.9K C334 AM BAND (UJ) COVERAGE fL BF301 B.P.F. LOOP FM FRONT END...
  • Page 15 CD-EA235V TP302 R358 C371 3.9K 1/50 R350 C372 2.7K 1/50 C367 1/50 10 11 R352 R355 3.3K T351 C356 0.001 AM IF R393 C393 0.001 ZD351 DZ5.1BSB C396 100/10 C395 C397 0.022 R392 0.022 C392 0.001 R382 C380 10/50 SWITCHING...
  • Page 16 CD-EA235V IC901 IC901 L-CH R-CH STK43205 Ch1 – – POWER AMP. C908 470P R925 C907 470P C913 100/63 C906 C905 3.3P 3.3P R903 (CH) (CH) L901 R921 0.29µH C910 100(1/4W) R907 R913 47/50 Fusible 0.1(1W) L902 0.29µH R909 R923 C911...
  • Page 17 CD-EA235V M901 FM SIGNAL FAN MOTOR MOTOR DRIVER D912 R949 DS1SS133 HEADPHONES R947 C931 R950 10/50 PWB-A3 220(1/2W) R942 WTM901 220(1/2W) R943 FW901 CNP705 M_+13.5V R945 R944 1.5K 1.5K SP_RLY R_CH RL914 L_CH JK701 HEADPHONES C927 0.22 D911 DS1SS133 C929 0.22...
  • Page 18 CD-EA235V FL701 FL DISPLAY 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 1 C707...
  • Page 19 CD-EA235V DISPLAY PWB-A2 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 R795 C701 1/50 L701 85 86 87 88 89 90 91 92 93 94 95 96 97 98 100µH...
  • Page 20 CD-EA235V VIDEO CD PWB-C (1/2) CD SIGNAL 100P 0.022 100P 100P 100P 100P 100P PICKUP UNIT 0.022 VREF VREF 0.047 47/25 80 79 78 77 76 75 74 73 72 71 70 69 68 67 0.0033 0.0033 0.01 AVSS1 AVDD1 0.056...
  • Page 21 CD-EA235V 100P 0.022 100P 100P 100P CD RES 100P CLAMP SW 100P O/C_SW DISC NO SW DSA_STB 0.022 2.2 µH MPEG_POW CNP5 4.7K 2.2K MPEG_POW P22 1 - C DSA_STB TO MPEG SECTION 2.2K 75 74 73 72 71 70 69 68 67 66...
  • Page 22 CD-EA235V KTA1046 Y SI3033LU 3 2 1 RM34 UN2211 RM36 CM58 47/25 CM61 CM39 10/10 OS-CON CM37 CM36 100/10 R-CH AGND L-CH A10V 32 31 30 29 28 27 26 25 24 23 ICM4 IX0528AW EPROM MPEG POWER DSA_STB 1 2 3 4 5 6 7 8 9 10...
  • Page 23 CD-EA235V CM50 CM53 RM65 33P(CH) CM51 10/16 RM63 33P(CH) – – RM66 RM62 CM52 CM49 TJM4558CD 10/16 33P(CH) OPE AMP. CM44 CM43 RM74 10/16 10/16 RM50 CM42 10/16 CNP7 DSA_ACK DSA_DATA HSS_DO HSS_DI HSS_STB HSS_ACK KTC3265 Y 100/16 1000/6.3 VDAC...
  • Page 24 CD-EA235V CHASSIS LUG1 5.6K VOLUME 21 20 19 18 17 16 15 14 13 12 11 10 RK11 CK18 100/16 RK10 CK19 0.022 CK34 CK43 RK49 47/25 RK50 RK12 RK47 RK48 RK13 1.2K 8.2K 47/25 CK53 ZDK1 MTZJ5.6B CK49 RK44...
  • Page 25 CD-EA235V LUG1 CK19 CK20 ICK1 CK31 CK22 CK18 VRK1 MIC LEVEL RK48 MIC PWB-G RK40 CK51 RK50 RK36 RK49 CK49 RK37 CNSK1 RK44 RK38 RK47 MAIN PWB RK43 P27 7-A CK40 RK45 CK47 CK50 CK48 RK46 Figure 25 WIRING SIDE OF P.W.BOARD (1/9)
  • Page 26 CD-EA235V TO MIC P25 12 CNPK CNSK1 3 4 5 6 7 MAIN PWB-A1 C302 R373 R372 R374 R388 X352 10 11 R359 C382 R376 R360 IC302 C387 C381 R379 C395 L351 C392 R377 C380 C394 R395 R381 R375 C389...
  • Page 27 CD-EA235V TO VIDEO CD PWB P30 1-E TO MIC PWB P25 12-D CNP6 COLOR TABLE CNPK1 BROWN CNS601 CNSK1 TO DISPLAY PWB RD(R) FROM 3 4 5 6 7 8 9 10 11 P29 12-E 1 2 3 4 5 6 7 8...
  • Page 28 CD-EA235V DISPLAY PWB-A2 SW722 RX701 EQUALIZER SW721 X-BASS/DEMO FL701 RD19 CNS702 R763 R701 C717 R702 C701 IC701 SW725 R708 VOLUME CNS701 R705 C702 R709 SW712 TUNER R710 R711 R769 R713 R771 R712 C714 R716 R774 R715 D714 R780 RD11 R756...
  • Page 29 CD-EA235V SW708 P.B.C R745 R744 R743 SW710 RD08 DIGEST SW709 R787 R742 RD09 R754 R784 C707 R755 R785 R741 R746 R747 R735 R772 R770 R734 SW701 R758 R731 R764 STAND-BY R732 R729 R728 R727 R753 SW711 R726 SW707 FFC701 CLOCK...
  • Page 30 CD-EA235V VIDEO CD PWB-C (BOTTOM VIEW) CM36 CM37 RM63 RM60 RM76 RM68 RM73 RM12 RM54 ICM4 CNP8 RM70 CM43 CM44 RM56 CM13 CM34 RM10 RM13 CM11 RM15 RM16 CM19 CM17 CM24 CM14 CM18 CM59 RM26 RM77 RM81 CM21 RM23 RM43...
  • Page 31 CD-EA235V VIDEO CD PWB-C (TOP VIEW) CM49 RM58 CM46 CM26 CM35 RM30 RM31 ICM2 15 20 5 10 15 20 25 CM33 CM56 ICM3 5 10 15 Figure 31 WIRING SIDE OF P.W.BOARD (7/9) – 31 –...
  • Page 32 CD-EA235V FROM MAIN PWB TO MAIN P27 12-G CHASSIS CNS801 FROM DISPLAY PWB POWER PWB-B1 P28 1-E FW701 C814 C805 C806 C807 R803 C803 C801 ZD803 D802 R808 E C B COLOR TABLE Q801 BROWN C802 F801 ZD802 T4A L 250V...
  • Page 33 CD-EA235V P28 4 - G TAPE MECHANISM TO DISPLAY PWB ASSEMBLY CNP702 TAPE MECHANISM PWB-F FFC702 SOLENOID SOLENOID TAPE MOTOR CD LOADING MOTOR PWB-E TAPE 1 TAPE 2 PLAYBACK HEAD RECORD/PLAYBACK/ COLOR TABLE ERASE HEAD BROWN OPEN/CLOSE R D ( R )

  • Page 34: Notes On Schematic Diagram

    CD-EA235V NOTES ON SCHEMATIC DIAGRAM • Resistor: • The indicated voltage in each section is the one measured To differentiate the units of resistors, such symbol as K and by Digital Multimeter between such a section and the chas- M are used: the symbol K means 1000 ohm and the symbol sis with no signal given.

  • Page 35: Voltage

    CD-EA235V VOLTAGE IC701 ICM1 ICM2 ICM3 ICK1 PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE PIN NO. VOLTAGE 9.34 V 4.87 V 5.18 V 2.78 V...

  • Page 36: Fl Display

    CD-EA235V FL DISPLAY FL701 VVKNA10SS23-1 GRID ASSIGNMENT h j k small dot (1G) (2G~9G) ANODE CONNECTION PTYI (white) (Rsh.o) small dot SLEEP X-BASS MEMORY – 36 –...
  • Page 37 PARTS GUIDE VIDEO CD MINI SYSTEM CD-EA235V MODEL CD-EA235V Video CD Mini System consisting of CD-EA235V (main unit) and CP-EA235 (speaker system). “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the For U.S.A. only following information.
  • Page 38 CD-EA235V PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK ZDK1 VHEMTZJ5R6B-1 AD Zener,5.6V,MTZJ5.6B CD-EA235V FILTERS INTEGRATED CIRCUITS BF301 RFILR0008AWZZ AE Band Pass Filter VHILC78637E-1 AY CD Servo,LC78637E CF303 RFILF0124AFZZ AD FM IF,10.7 MHz VHILA6574H+-1 AN Focus/Tracking/Spin/Sled Driver, CF351...
  • Page 39 CD-EA235V PRICE PRICE DESCRIPTION DESCRIPTION PART CODE PARTS CODE RANK RANK AA 0.001 µF,50V VCCCCY1HH8R0D J AA 8 pF (CH),50V C384 VCKYMN1HB102K J AA 0.01 µF,16V VCCCCY1HH100D J AA 10 pF (CH),50V C385 VCTYMN1CY103N J AB 0.022 µF,25V VCKYCY1EF223Z C386...
  • Page 40 CD-EA235V PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AA 0.022 µF,50V CK19 VCKZPA1HF223Z VRS-CY1JB221J AA 220 ohms,1/16W AB 0.22 µF,50V,Polyester CK20 VCFYDA1HA224J VRS-CY1JB153J AA 15 kohms,1/16W AB 0.068 µF,50V,Polyester CK21 VCFYDA1HA683J VRS-CY1JB472J AA 4.7 kohms,1/16W AA 0.0047 µF,16V...
  • Page 41 CD-EA235V PRICE PRICE DESCRIPTION DESCRIPTION PART CODE PARTS CODE RANK RANK R608,609 VRD-MN2BD391J AA 390 ohms,1/8W R917~920 VRN-VV3DAR22J AC 0.22 ohms,2W 1 R921,922 R610,611 VRD-MN2BD222J AA 2.2 kohms,1/8W VRG-ST2EC101J AB 100 ohm,1/4W,Fusible R612,613 VRD-MN2BD391J AA 390 ohms,1/8W R923,924 VRD-MN2BD271J AA 270 ohms,1/8W...

  • Page 42: Waveforms Of Cd Circuit

    CD-EA235V PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK RM69 VRS-CY1JB222J AA 2.2 kohms,1/16W SW709 92LSWICHT1663T J AC Switch,Key Type [OSD] RM70 VRS-CY1JB221J AA 220 ohms,1/16W SW710 92LSWICHT1663T J AC Switch,Key Type [DIGEST] RM71 VRS-CY1JB332J AA 3.3 kohms,1/16W...

  • Page 43: Troubleshooting

    CD-EA235V PRICE DESCRIPTION PART CODE RANK GITAR1212AWSA AM Rear Panel LX-JZ0036AWFD AB Screw,Special [Except for Philippines] LX-JZ0037AWFD AB Screw,ø3×18mm GITAR1213AWSA AM Rear Panel [For Philippines] 92LSC2608RBZI AA Screw,ø2.6×8mm KMECB0033AWZZ J BG Tape Mechanism Ass’y XJBSD30P10000 AA Screw,ø3×10mm 92LSC0310RBZI AB Screw,ø3×10mm...
  • Page 44 CD-EA235V CD-EA235V 306-2 306-1 306-3 703x2 305x2 PWB-D Figure 7 CD MECHANISM EXPLODED VIEW – 7 –...
  • Page 45 CD-EA235V CD-EA235V BELT CONNECTION 202-1 601x2 FF/REW Tape FF/REW PWB-A1 ROLLER Motor ROLLER ASS'Y ASS'Y 611x2 FLYWHEEL FLYWHEEL ASS'Y ASS'Y MAIN BELT TAPE2 TAPE1 619x12 619x2 Silicon Silicon Grease Grease 202-2 IC851 IC901 IC852 IC853 PWB-F 615x3 616x2 208-3 606x2...
  • Page 46 CD-EA235V CD-EA235V 602x2 618x2 MECHANISM 602x2 PWB-E PWB-C 620x2 Figure 9 CABINET EXPLODED VIEW (2/2) – 9 –...

  • Page 47: Function Table Of Ic

    CD-EA235V CP-EA235 SP3, 906x2 SP1, 2 905x4 910x4 SP3, TWEETER Capacitor 1.8 µF, 100V (N.P.) SP1, WOOFER SP3, 4 TWEETER Capacitor 1.8 µF, 100V (N.P.) SP1, 2 WOOFER Figure 10 SPEAKER EXPLODED VIEW – 10 –...
  • Page 48 CD-EA235V © COPYRIGHT 2003 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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