Sharp XL-520W Service Manual
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Sharp XL-520W Service Manual

Sharp XL-520W Service Manual

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SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
OPERATION MANUAL ...................................................................................................................................................... 5
DISASSEMBLY .................................................................................................................................................................. 7
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 8
ADJUSTMENT ................................................................................................................................................................... 9
BLOCK DIAGRAM ........................................................................................................................................................... 16
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 20
VOLTAGE ........................................................................................................................................................................ 28
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 29
TYPE OF TRANSISTOR AND LED ................................................................................................................................. 29
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 30
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 31
FUNCTION TABLE OF IC ................................................................................................................................................ 36
REPLACEMENT PARTS LIST/EXPLODED VIEW
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
- 1 -
XL-520W
CP-520
XL-520W and CP-520 constitute XL-520W.
• 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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
XL-520W/CP-520
No. S0780XL520W//
Page
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  • Page 1: Table Of Contents

    XL-520W/CP-520 SERVICE MANUAL No. S0780XL520W// XL-520W CP-520 XL-520W and CP-520 constitute XL-520W. • 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 Page SAFETY PRECAUTION FOR SERVICE MANUAL ......................2 SPECIFICATIONS ................................

  • Page 2: Safety Precaution For Service Manual

    XL-520W/CP-520 SAFETY PRECAUTION FOR Laeser Diode Properties Material: GaAlAs Wavelength: 780 nm SERVICE MANUAL Emission Duration:continuous Laser Output: max. 0.6 mW Precaution to be taken when replacing and servicing the Laser Pickup. The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements.

  • Page 3: Names Of Parts

    XL-520W/CP-520 NAMES OF PARTS XL-520W Front Panel 1. Functin/Band/Track Number Indicator REC SLEEP 2. Volume Indicator 3. Extra Bass/Equalizar Indicator 4. Timer Indicator RANDOM MEMORY 5. Record Indicator 6. Sleep Indicator 7. Repeat Indicator 12 13 8. Play Indicator 9. Video/Auxiliary Indicator 10.
  • Page 4 XL-520W/CP-520 CP-520 Speaker Section 1. Tweeter 2. Woofer 3. Bass Reflex Duct 4. Speaker Wire XL-520W Remote Control 1. Remote Control Transmitter LED 2. On/Stand-by Button 3. (CD) Repeat/Random Button STAND-BY 4. (CD/TUNER) Memory/Set Button 5. (CD/TUNER) Clear Button 6. Timer/Set Button...

  • Page 5: Operation Manual

    XL-520W/CP-520 OPERATION MANUAL – 5 –...
  • Page 6 XL-520W/CP-520 – 6 –...

  • Page 7: Disassembly

    XL-520W/CP-520 DISASSEMBLY XL-520W Caution on Disassembly Follow the below-mentioned notes when disassembling (A3)x1 the unit and reassembling it, to keep it safe and ensure Top Cabinet ø3x10mm (A1)x1 excellent performance: Cabinet ø3x12mm 1. Take cassette tape and compact disc out of the unit.

  • Page 8: Removing And Reinstalling The Main Parts

    XL-520W/CP-520 REMOVING AND REINSTALLING THE MAIN PARTS CD MECHANISM SECTION ( A1 ) x2 Perform steps 1,to 5 of the disassembly method to remove the Mechanism Cover CD mechanism. ( A2 ) x2 How to remove the pickup (See Fig. 8) ø2.6 x6mm...

  • Page 9: Adjustment

    XL-520W/CP-520 ADJUSTMENT TUNER SECTION MECHANISM SECTION fL: Low-range frequency • Driving Force Check fH: High-renge frequency Torque Meter Specified Value • FM RF Play: TW-2412 Over 80 g Signal generator: 1 kHz, 75 kHz dev., FM modulated Test Stage Frequency...
  • Page 10 XL-520W/CP-520 CD SECTION 1. This CD unit need adjustment as follow. CD Test Mode Value/Adjusting Method Adjustment Part Instrument Connection Step 1 VR803 (Focus Offset) DC + 40 mV (FEI>VRO) FEI (R826) and VRO (1-Pin of TP801) Step 4 VR802 (Tracking Error Balance) *1 (See Fig.

  • Page 11: Test Mode

    XL-520W/CP-520 TEST MODE The Test Mode for this microcomputer has two variations, namely "regular Test Mode" for adjustment and measurement and "self- diagnosis Test Mode" for self-judgment in final inspection of products. 1. Entering the Test Mode To enter the each Test Mode, press the POWER key, holding down the following two keys in the regular standby mode (power off state).
  • Page 12 XL-520W/CP-520 When the following operation key is pressed in this state, the following operation is performed. "POWER" ....The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode. "FF/FWD" ....While this key is held down, the pickup slides to the external periphery.
  • Page 13 XL-520W/CP-520 When the following operation keys are pressed in this state, the following operations are performed. "POWER" ....The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode. "FF/FWD" ....While this key is held down, the pickup slides to the external periphery.
  • Page 14 XL-520W/CP-520 Test Mode operation specification 3. Preset frequencies for various destinations (random preset memory) 100 kHz SPAN BAND (CH) 10 kHz SPAN BAND (CH) 87.5MHz 87.5MHz FM 108.0MHz FM 108.0MHz 98.0MHz 98.0MHz 90.0MHz 90.0MHz FM 106.0MHz FM 106.0MHz BAND (CH)
  • Page 15 XL-520W/CP-520 7. Key input diagnosis Test Mode (TEST A) When the Test Mode is set, the following display appears. In this Test Mode checking as to whether all the main unit keys can be detected is performed. Accordingly, when this mode is set, checking is performed so as to examine whether the POWER key was pressed last after all the following keys were pressed.

  • Page 16: Block Diagram

    XL-520W/CP-520 LCD701 COM3 COM0 VLC3 OSC2 IC701 OSC1 X701 IX0189AW 8MHz SRS1 X702 SRS2 MMOD 32.768kHz VREF BUS3 KEY1 SW702-SW708 PU-IN SW710-SW714 POWER SW718 LID-SW BIAS B-CAN CAM SW LED704 - LED712 34 35 36 38 39 41 42 40 44...
  • Page 17 XL-520W/CP-520 SW701 CD EJECT M 12V D GND M GND S+6.2V A GND R-CH L-CH P MUTE A 12V P CONT CD+B R-MUTE FM ST B-CAN BIAS SRS1 SRS2 (S+6.2V) µ-CON5V Q861 REGULATOR Q906 SWTCHING TAPE MOTOR DRIVER SWTCHING PU IN...
  • Page 18 XL-520W/CP-520 SWITCHING R-MUTE Q351 FM MUTE LEVEL T302 VR351 AM ANT. X351 AM OSC OUT AM OSC. LOOP T306 ANTENNA CNP301 CF351 AM IF T351 CF352 VOLTAGE REGULATOR ZD351 AUDIO +12V A-GND SO301 ANTENNA TERMINAL CF302 D GND L302 L303...
  • Page 19 XL-520W/CP-520 MODE MODE Q202 Q203 Q205 Q201 28 27 26 25 16 15 LIPPLE FILTER 13 14 A 12V IC201 Q208 SRS5250S IN R IN L SRS1 SRS2 R-CH X-BASS/GRAPHIC EQUALIZER TAPE TAPE L TAPE R 17 32 16 33...

  • Page 20: Schematic Diagram / Wiring Side Of P.w.board

    XL-520W/CP-520 VD301-1 R319 C342 AM TRACKING fL KV1236Z23F 100K 0.022 C330 R358 C331 C332 C333 C343 8.2K 8.2P R364 R363 0.047 0.022 0.022 T302 (UJ) 3.3K 3.3K L353 C373 0.018 VR351 Q351 10K(B) KRC104M C301 FM MUTE SWITCHING 0.001 LEVEL...
  • Page 21 XL-520W/CP-520 SRS PWB-B3 R219 Q201 R217 10K KRC107M KRC107M Q202 Q205 3 2SK246GR R216 D203 Q203 KRC107M 1SS133 R233 4.7K 28 27 26 25 24 23 22 21 20 17 16 15 C226 4.7/25 IC201 SRS5250S C225 10/16 Q208 12 13 14...
  • Page 22 XL-520W/CP-520 DISPLAY PWB-A3 LCD701 SW708 LED PWB-A4 3D SURROUND R707 SW707 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 FUNCTION R708 5.6K SW714 SW706...
  • Page 23 XL-520W/CP-520 CD LID SWITCH PWB-A7 CD SIGNAL SW701 CD EJECT CNS603 M 12V M 12V D GND D GND CD STB R783 SRS1 R782 SRS2 R781 BUS3 M GND R780 S+6.2V BUS2 R779 A GND BUS1 R778 BUS0 R-CH µ-CON5V...
  • Page 24 XL-520W/CP-520 POWER AMP PWB-B1 R601 R615 C605 R603 C601 Q601 C607 B C E R607 D601 R608 R604 C629 D105 B C E C606 R616 Q602 R137 R606 R602 C608 R105 R107 C109 R103 R109 R127 C111 R129 R135 C119...
  • Page 25 XL-520W/CP-520 RECORD/PLAYBACK HEAD(137) ERASE HEAD(138) CNS101 IC101 D105 R136 Q107 3 2 1 3 2 1 Q151 R101 R107 R115 R103 C105 J601 C107 HEADPHONES C103 Q154 Q155 Q153 C111 R140 R135 TO SRS PWB C104 C124 P26 1-A C106...
  • Page 26 XL-520W/CP-520 P25 10-B TO MAIN PWB CNP201 DISPL 8 7 6 5 4 3 2 1 CNS201 D203 Q201 CD LID SWITCH PWB-A6 Q205 FW702 SW701 CD EJECT IC201 Q208 LED PWB -A4 Q202 Q203 SRS PWB -B3 SW902 TAPE MECHANISM...
  • Page 27 XL-520W/CP-520 DISPLAY PWB-A3 R70B R70G R70C LCD701 Q703 R753 C715 R733 D722 ZD701 R70L SW718 STAND-BY SW707 IC701 TCH PWB-A6 FUNCTION R732 C702 C701 SW706 BAND FW702 X701 SW701 R726 CD EJECT X702 R707 21 20 R724 R725 LED717 LED716...

  • Page 28: Voltage

    XL-520W/CP-520 VOLTAGE IC101 IC302 IC401 IC701 IC801 IC802 NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 2.6V 4.7V 2.5V 2.4V 4.2V 2.5V 4.7V 2.1V 2.3V 0.1V 4.7V 2.5V 2.1V 2.6V – 0.3V(8V) 0.1V...

  • Page 29: Notes On Schematic Diagram

    XL-520W/CP-520 NOTES ON SCHEMATIC DIAGRAM • The indicated voltage in each section is the one measured • Resistor: by Digital Multimeter between such a section and the chas- To differentiate the units of resistors, such symbol as K and sis with no signal given.

  • Page 30: Waveforms Of Cd Circuit

    XL-520W/CP-520 WAVEFORMS OF CD CIRCUIT STOP PLAY NO DISC FOCUS SEARCH DMEO FKIC DMFC FCSI DMPC FOCUS SEARCH STOP PLAY FKIC FCSI FMSO STOP PLAY TKIC FMFB STOP PLAY REVIEW TKIC SBAD FMFB STOP PLAY TCD-782 TUO-02 PLAYBACK TS2O RFRP R-CH –...

  • Page 31: Troubleshooting (Cd Section)

    XL-520W/CP-520 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 32 XL-520W/CP-520 • LCD indication error. Is +5.6V applied to the Is +5V applied to the pin 8 (VDD) of IC701? Check the pattern between emitter of Q704? Q704 and CNS603. Check the pattern between Q704 and IC704. Is +5V applied to the pin 38 (SYS STOP) of IC701? Check the PWB pattern between the collector of Q702 and Q701.
  • Page 33 XL-520W/CP-520 • Focus servo sawtooth wave is not ouput. Check the pattern between pin 20 of IC801 and Q861. Is +5V applied to the pin 20 (VCC) of IC801? Is the following waveform Check R823 and R833 of Is sawtooth wave output to the pin 16 (FSO) of IC801? shown below obtained? pins 43 and 44 of IC802.
  • Page 34 XL-520W/CP-520 • HF error. Is output (tracking error signal) obtained at the pin 35 (TSO) of Check IC801 and the periphery of CNW802. If OK, the optical IC801 when the CD test mode "STEP4" is set? pickup is faulty. Is tracking output obtained at the pin 30 (TS20) of IC801 when Check the peripheral parts of IC801.
  • Page 35 XL-520W/CP-520 • Sled motor operation failure. Check the pattern between pin 27 of IC801 and pin 36 of IC802. Is slide feed signal output between the pin 26 (FUSO), 27 Check the connection of peripheral parts of IC801. (FMSM) of IC801 and the pin 15 of IC804 when FF/REW is If OK, IC801 is faulty.

  • Page 36: Function Table Of Ic

    XL-520W/CP-520 FUNCTION TABLE OF IC IC701 RH-iX0189AWZZ:System Microcomputer(iX0189AW) (1/2) Terminal Name Input/Output Pin No. Function COM3-COM0 Output LCD COMMON output terminal VLC3-VLC1 — LCD power terminal — Microcomputer power supply +5V. OSC2 Output Main clock oscillator connection terminal f=8MHz OSC1...
  • Page 37 XL-520W/CP-520 IC701 RH-iX0189AWZZ:System Microcomputer(iX0189AW) (2/2) Terminal Name Input/Output Function Pin No. Output Tape circuit record/playback selection output H:Record Mode L:Playback Mode B-CAN Output Record bias oscillation frequency selection control output BIAS Output Record bias oscillation circuit control output H: Bias oscillation...
  • Page 38 XL-520W/CP-520 IC802 VHiTC9284BF-1:Servo/Signal Control (TC9284BF) (1/2) Function Port Name Input/Output Pin No. GNDA — Analog grand terminal fo DA vonverter (R channel) Output R channel data forward output terminal. Output R channel data reverse output terminal. — Analog power supply terminal for DA converter.
  • Page 39 XL-520W/CP-520 IC802 VHiTC9284BF-1:Servo/Signal Control (TC9284BF) (2/2) Function Port Name Input/Output Pin No. FCSI Output Focus actuator driving signal output terminal in the focus search mode. COMMAND FCSI OUTPUT OPERATION FORST Lens gets for away from disc FOSET Lens gets near disc...
  • Page 40 XL-520W/CP-520 IC802 VHiTC9284BF-1:Servo/Signal Control (TC9284BF) 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 TESTX DMPC PLL circuit Data slicer DMFC AD converter Focus/ GNDD...
  • Page 41 XL-520W/CP-520 IC801 VHiTA2065F/-1:Servo Amp. (TA2065F) Pin No. Terminal Name Input/Output Function Output RF amp (RF AMP) output terminal. Input RF ripple signal generating circuit input terminal. Output VR amp output terminal. 2VRO Output 2VR amp output terminal. RFRP Output RF ripple signal output terminal.
  • Page 42 XL-520W/CP-520 IC801 VHiTA2065F/-1:Servo Amp. (TA2065F) 180k DMEO 68µF DMEN 2.8k DMEP 680k 3 STATE 25µA 1.5k OSCI RFRP BOTTOM FSOSC PEAK COSC 100k 33PF Figure 42 BLOCK DIAGRAM OF IC – 42 –...

  • Page 43: Parts Guide

    “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 44 XL-520W/CP-520 PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK ZD601 VHEMTZJ130A-1 AC Zener,13V,MTZJ13A XL-520W ZD602 VHEMTZJ7R5C-1 AC Zener,7.5V,MTZJ7.5C ZD701 VHEMTZJ3R3B-1 AA Zener,3.3V,MTZJ3.3B INTEGRATED CIRCUITS ZD702 VHEMTZJ6R2C-1 AC Zener,6.2V,MTZJ6.2C ZD801 VHEMTZJ5R6B-1 AD Zener,5.6V,MTZJ5.6B IC101 VHIBA3126N/-1 AF Head Selector,BA3126N IC102 VHIBA3311L/-1 AK REC./P.B.Equalizer Amp.,...
  • Page 45 XL-520W/CP-520 PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AB 4.7 µF,25V,Electrolytic AA 0.022 µF,50V C226 RC-GZA475AF1E C602 VCKZPA1HF223Z AB 0.022 µF,50V,Mylar AA 0.001 µF,50V C240 RC-QZ0018AWZZ C603,604 VCKYPA1HB102K AA 0.001 µF,50V AB 4.7 µF,25V,Electrolytic C301 VCKYPA1HB102K C605,606 RC-GZA475AF1E AA 0.001 µF,50V...
  • Page 46 XL-520W/CP-520 PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AB 100 µF,10V,Electrolytic C881 RC-GZA107AF1A R308 VRD-MN2BD103J AA 10 kohm,1/8W AB 10 µF,16V,Electrolytic C883,884 RC-GZA106AF1C R309 VRD-ST2EE821J AA 820 ohms,1/4W AA 0.0022 µF,16V C885,886 VCTYMN1CX222K J R310 VRD-MN2BD472J AA 4.7 kohms,1/8W AA 0.022 µF,25V...
  • Page 47 XL-520W/CP-520 PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK R718 VRD-ST2EE272J AA 2.7 kohms,1/4W OTHER CIRCUITRY PARTS R719 VRD-ST2EE182J AA 1.8 kohms,1/4W R720 VRD-MN2BD182J AA 1.8 kohms,1/8W R721,722 VRD-MN2BD103J AA 10 kohm,1/8W BI651/CNS651 QCNWN0981AWZZ J AE Connector Ass’y,2-2Pin...
  • Page 48 XL-520W/CP-520 PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK NGERH0028AWZZ J AB Gear,Flywheel 207- 1 ———— — Cassette Holder NGERH0030AWZZ J AE Gear,Play Idler (Not Replacement Item) NGERH0032AWZZ J AC Gear,FF 207- 2 HDECQ0258AWSA J AF Panel,Cassette Holder...

  • Page 49: Tweeter

    XL-520W/CP-520 PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK 92LCORD1652A AC Power Supply Cord[For Taiwan Only] 92LCORD577B AM AC Power Supply Cord [For Saudi Arabia Only] 92LF-ANT1535A AF FM Antenna 92LG-CARD1266E1 J AB Warranty Card [Australia/New Zealand Only]...
  • Page 50 XL-520W/CP-520 XL-520W 306-2 306-1 306-3 M802 M801 305x2 SW801 PWB-D Figure 7 CD MECHANISM EXPLODED VIEW – 7 – – 50 –...
  • Page 51 XL-520W/CP-520 XL-520W 504X3 504X2 SOL901 SW902 SW901 PWB-C 505X2 BELT CONNECTION M901 503X2 M901 Figure 8 TAPE MECHANISM EXPLODED VIEW – 8 – – 51 –...
  • Page 52 XL-520W/CP-520 XL-520W 607x2 607x2 223-3 605x2 239x3 223-1 223-2 607x2 PWB-B1 605x2 607x2 605x2 616x2 608x3 610x3 PWB-A7 MECHANISM Silicon Grease 601x1 602x6 PWB-B3 607x2 PWB-A3 PWB-A2 201-4 TAPE PWB-A4 MECHANISM 201-1 LCD701 602x4 607x2 201-2 PWB-A5 201-3 PWB-B4 PWB-B2...
  • Page 53 XL-520W/CP-520 CP-520 SP1,2 704x4 SP3,4 Tweeter Black SP1,2 Woofer Black Figure 10 SPEAKER EXPLODED VIEW – 53 – – 10 –...
  • Page 54 XL-520W/CP-520 — M E M O — – 54 – – 11 –...
  • Page 55 XL-520W/CP-520 — M E M O — – 55 – – 12 –...
  • Page 56 XL-520W/CP-520 © COPYRIGHT 1997 BY SHARP COPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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