Sharp XL-520H Service Manual
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Sharp XL-520H Service Manual

Sharp XL-520H Service Manual

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Illustration: XL-520H/CP-520
SAFETY PRECAUTION FOR SERVICE MANUAL .......................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................ 3
NAMES OF PARTS .......................................................................................................................................................... 4
OPERATION MANUAL ..................................................................................................................................................... 6
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
LCD SEGMENT .............................................................................................................................................................. 43
PACKING METHOD (XL-520E ONLY) ............................................................................................................................ 44
REPLACEMENT PARTS LIST/EXPLODED VIEW
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
- 1 -
XL-520H,520E/CP-520,520E
XL-520H
XL-520E
CP-520
CP-520E
XL-520H and CP-520 constitute XL-520H.
XL-520E and CP-520E constitute XL-520E.
• 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.
No. S9768XL520HE/
Page

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Summary of Contents for Sharp XL-520H

  • Page 1: Table Of Contents

    XL-520E CP-520 CP-520E Illustration: XL-520H/CP-520 XL-520H and CP-520 constitute XL-520H. XL-520E and CP-520E constitute XL-520E. • 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.

  • Page 2: Safety Precaution For Service Manual

    XL-520H,520E/CP-520,520E SAFETY PRECAUTION FOR SERVICE MANUAL 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. However, the following precautions must be observed during...

  • Page 3: Specifications

    XL-520H,520E/CP-520,520E FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS XL-520H/520E General Cassette deck section Power source: AC 230 V, 50 Hz Frequency response: 50 - 14,000 Hz (Normal tape) Power consumption:...

  • Page 4: Names Of Parts

    29. Cassette Compartment 30. CD Digital Output Socket (Optical) Rear Panel 1. AC Power Input Socket 2. FM 75 ohms Aerial Socket 3. MW/LW Loop Aerial Input Socket 4. Video/Auxiliary (Audio Signal) Input Sockets 5. Speaker Terminals (Illustration: XL-520H) – 4 –...
  • Page 5 12. Tuning Up/Down Buttons SLEEP TIMER 13. Timer Button 14. Timer Up/Down Buttons 15. Function Selector Button 16. Band Selector Button 17. Extra Bass/Equalizer Mode Button X-BASS/ FUNCTION BAND EQUALIZER 18. Volume Up/Down Buttons VOLUME (Illustration: XL-520H) – 5 –...

  • Page 6: Operation Manual

    XL-520H,520E/CP-520,520E OPERATION MANUAL – 6 –...

  • Page 7: Disassembly

    XL-520H,520E/CP-520,520E DISASSEMBLY XL-520H/520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E ADJUSTMENT TUNER SECTION MECHANISM SECTION • Driving Force Check fL: Low-range frequency fH: High-renge frequency Torque Meter Specified Value • AM IF/RF Play: TW-2412 Over 80 g Signal generator: 400 Hz, 30%, AM modulated Test Stage Frequency Frequency Setting/ Instrument •...
  • Page 10 XL-520H,520E/CP-520,520E 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 XL-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E Test Mode operation specification 3. Preset frequencies for various destinations (random preset memory) BAND (CH) 87.5MHz 522 kHz FM 108.0MHz LW 1620 kHz 98.0MHz 990 kHz 90.0MHz 603 kHz FM 106.0MHz LW 1404 kHz 522 kHz MW 1620 kHz...
  • Page 15 XL-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E LCD701 COM3 COM0 VLC3 OSC2 IC701 OSC1 X701 IX0189AW X702 MMOD VREF BUS3 KEY1 SW702-SW707 PU-IN SW710-SW714 POWER SW718 LID-SW BIAS B-CAN CAM SW LED704 - LED712 34 35 36 38 39 41 42 40 44 45 46 47 48...
  • Page 17 XL-520H,520E/CP-520,520E 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 (S+6.2V) µ-CON5V Q861 REGULATOR Q906 SWTCHING TAPE MOTOR SWTCHING DRIVER PU IN Q905...
  • Page 18 XL-520H,520E/CP-520,520E SWITCHING R-MUTE Q351 FM MUTE LEVEL T301 VR351 T302 MW/LW ANT. X351 AM OSC OUT MW/LW OSC. LOOP T305 ANTENNA T306 CNP301 CF351 AM IF T351 CF352 VOLTAGE REGULATOR ZD351 AUDIO +12V A-GND SO301 ANTENNA TERMINAL CF302 D GND...
  • Page 19 XL-520H,520E/CP-520,520E R-CH X-BASS/GRAPHIC EQUALIZER TAPE TAPE L TAPE R 17 32 16 33 TUN R TUNER TUN L RVref CD R Vref LVref CD L IC401 LTEST LC75394E RTEST AUDIO PROCESSOR FUNCTION CONTROL AUDIO +12V VOL CONTROL AVSS LVROUT G-EQ CONTROL...

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

    XL-520H,520E/CP-520,520E VD301-1 R319 MW ANT. KV1236Z23F 100K C330 R358 C331 C332 C333 C343 8.2P 8.2K L.P.F. R364 R363 0.047 0.022 0.022 T302 (UJ) L354 L353 3.3K 3.3K C373 0.018 VR351 R361 Q351 10K(B) T301 SWITCHING 0V(0V) KRC104M Q302 FM MUTE...
  • Page 21 XL-520H,520E/CP-520,520E SO401 L409 R406 2.2 µH R-CH R412 C408 R408 330P 1.5K VIDEO/AUX R414 R407 C407 3.3K 1.5K 330P C412 C416 R422 L-CH 22/16 1/50 R405 C409 0.001 C406 R420 C434 R480 0.0033 1/50 100K TAPE R R418 C438 C404...
  • Page 22 XL-520H,520E/CP-520,520E DISPLAY PWB-A3 LCD701 LED PWB-A4 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 COM1 SEG27 R724 R725...
  • Page 23 XL-520H,520E/CP-520,520E CD LID SWITCH PWB-A7 CD SIGNAL SW701 CD EJECT CNS603 M 12V M 12V D GND D GND CD STB SRS1 SRS2 M GND BUS3 BUS2 S+6.2V BUS1 A GND R-CH BUS0 µ-CON5V L-CH PU IN P MUTE A 12V...
  • Page 24 XL-520H,520E/CP-520,520E DISPL CD LID SWITCH PWB-A FW702 SW701 CD EJECT LED PWB -A4 SW902 TAPE MECHANISM PWB-C CNP901 COLOR TABLE FW901 BROWN SOL901 PH901 SOLENOID RD(R) ORANGE YELLOW GREEN BLUE VIOLET GRAY M901 WH(W) WHITE TAPE MOTOR BLACK PINK PICKUP UNIT...
  • Page 25 XL-520H,520E/CP-520,520E DISPLAY PWB-A3 R70B R70G R70C R752 LCD701 Q703 R753 C715 R733 D722 ZD701 R70L SW718 STAND-BY SW707 IC701 CH PWB-A6 FUNCTION R732 C702 C701 SW706 BAND FW702 X701 SW701 R726 CD EJECT X702 21 20 R725 R724 R723 SW705...
  • Page 26 XL-520H,520E/CP-520,520E POWER AMP PWB-B1 R601 R615 C605 C673 R603 Q601 C601 B C E C607 R607 D601 R608 R604 D105 C629 B C E C606 R616 Q602 R137 R606 R602 C608 R105 R107 C619 C109 C674 R103 R109 R127 C111...
  • Page 27 XL-520H,520E/CP-520,520E RECORD/PLAYBACK HEAD(137) ERASE HEAD(138) CNS101 IC101 D105 R136 Q107 3 2 1 Q151 R101 R107 R115 R103 C105 J601 C107 HEADPHONES C103 Q153 Q154 Q155 C111 R140 R135 C104 C124 C106 R102 C125 C118 R156 C114 R141 R154 C155...

  • Page 28: Voltage

    XL-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E • 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-520H,520E/CP-520,520E • 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-520H,520E/CP-520,520E • 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-520H,520E/CP-520,520E • 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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-520H,520E/CP-520,520E 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: Lcd Segment

    XL-520H,520E/CP-520,520E LCD701 : RV-LX0027AWZZ COMMON SEGMENT Figure 43 LCD – 43 –...

  • Page 44: Packing Method (Xl-520E Only)

    XL-520H,520E/CP-520,520E PACKING OF METHOD (XL-520E ONLY) Setting position of switches and knobs Tape Mechanism STOP CP-520E XL-520E 1. AM Loop Antenna QANTL0005AWZZ 1. Packing Add., Speaker 92L412-0087 2. Packing Add. SPAKA0146AWZZ 2. Polyethylene Bag, Speaker 92L411-0019 3. Packing Case SPAKC0563AWZZ 3.
  • Page 45 “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 46 XL-520H,520E/CP-520,520E PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK CF302 RFILF0072AFZZ AG FM IF XL-520H/520E CF351 RFILF0003AWZZ AK FM IF INTEGRATED CIRCUITS CF352 RFILA0009AWZZ AE AM IF TRANSFORMERS IC101 VHIBA3126N/-1 AF Head Selector,BA3126N IC102 VHIBA3311L/-1 AK REC./P.B.Equalizer Amp.,...
  • Page 47 XL-520H,520E/CP-520,520E PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AA 0.0047 µF,50V C334 VCCUMN1HJ180J AA 18 pF (UJ),50V C617,618 VCKYPU1HB472K AA 0.001 µF,50V C335 VCCCMN1HH180J J AA 18 pF (CH),50V C619 VCKYPA1HB102K AC 470 µF,25V,Electrolytic C336 VCKYMN1HB471K J...
  • Page 48 XL-520H,520E/CP-520,520E PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AB 0.022 µF,50V,Mylar C864,865 RC-QZ0018AWZZ R356 VRD-MN2BD102J AA 1 kohm,1/8W AB 330 µF,10V,Electrolytic C871 RC-GZA337AF1A R357 VRD-MN2BD474J AA 470 kohms,1/8W AB 100 µF,10V,Electrolytic C881 RC-GZA107AF1A R358 VRD-MN2BD822J AA 8.2 kohms,1/8W AB 10 µF,16V,Electrolytic...
  • Page 49 XL-520H,520E/CP-520,520E PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R730~732 VRD-ST2EE102J AA 1 kohm,1/4W CNP101 92LCONE8P53253 J AC Plug,8Pin R733~735 VRD-MN2BD473J AA 47 kohms,1/8W CNP301 92LCONE-2P5268 AB Plug,2Pin R736,737 VRD-ST2CD473J AA 47 kohms,1/6W CNP602 QCNCM010QAWZZ J AD Plug,15Pin...
  • Page 50 XL-520H,520E/CP-520,520E PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK LANGT0026AWFW J AC Blacket,Hold PCOVS3020AWFW J AE Shield,Main PWB LANGT0027AWFW J AD Blacket,Motor GDORT0012AWSA J AG CD Lid LANGT0033AWFW J AB Blacket,Switch JKNBZ0128AWSB AC Knob,CD Eject MSPRP0005AWFW J AB Spring,Cassette...
  • Page 51 XL-520H,520E/CP-520,520E PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK CP-520/520E SPEAKER BOX PARTS 92L121-0100 AT Net Frame Ass’y [CP-520E] 92L121-0107 AX Net Frame Ass’y [CP-520] 92L051-0038 Speaker Box,Wooden [CP-520E] 92L051-0039 AY Speaker Box,Wooden [CP-520] 92L316-0037 AG Duct Pipe 92L372-0049 AB Screw,ø4×12mm...
  • Page 52 XL-520H,520E/CP-520,520E XL-520H/520E 306-2 306-1 306-3 M802 M801 305x2 SW801 PWB-D Figure 7 CD MECHANISM EXPLODED VIEW – 7 – – 52 –...
  • Page 53 XL-520H,520E/CP-520,520E XL-520H/520E 504X3 504X2 SOL901 SW902 SW901 PWB-C 505X2 BELT CONNECTION M901 503X2 M901 Figure 8 TAPE MECHANISM EXPLODED VIEW – 8 – – 53 –...
  • Page 54 XL-520H,520E/CP-520,520E XL-520H/520E 607x2 607x2 223-3 605x2 239x3 223-1 223-2 607x2 PWB-B1 605x2 607x2 605x2 616x2 610x3 PWB-A7 MECHANISM Silicon Grease 601x2 602x6 PWB-A1 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 605x2...
  • Page 55 XL-520H,520E/CP-520,520E CP-520/520E SP1,2 704x4 SP3,4 Tweeter Black SP1,2 Woofer Black Figure 10 SPEAKER EXPLODED VIEW – 55 – – 10 –...
  • Page 56 XL-520H,520E/CP-520,520E © 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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