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Sharp XL-55 Service Manual
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Sharp XL-55 Service Manual

Sharp XL-55 Service Manual

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Illustration XL-55
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ..................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................ 2
NAMES OF PARTS .......................................................................................................................................................... 3
DISASSEMBLY ................................................................................................................................................................. 4
REMOVING AND REINSTALLING THE MAIN PARTS .................................................................................................... 5
ADJUSTMENT .................................................................................................................................................................. 7
TEST MODE ..................................................................................................................................................................... 8
ERROR LIST .................................................................................................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 13
TYPES OF TRANSISTOR AND LED .............................................................................................................................. 13
BLOCK DIAGRAM .......................................................................................................................................................... 14
SCHEMATIC DIAGRAM ................................................................................................................................................. 18
WIRING SIDE OF P.W.BOARD ...................................................................................................................................... 25
WAVEFORMS OF CD CIRCUIT ..................................................................................................................................... 30
TROUBLESHOOTING .................................................................................................................................................... 31
FUNCTION TABLE OF IC .............................................................................................................................................. 37
LCD SEGMENT .............................................................................................................................................................. 44
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
- 1 -
MICRO COMPONENT SYSTEM
MODEL
XL- 55 Micro Component System consisting of XL- 55 (main unit)
and CP- XL55 (speaker system).
MODEL
XL- 55C Micro Component System consisting of XL- 55C (main
unit) and CP- XL55 (speaker system).
• 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-55/55C
No. S1308XL55////
XL-55
XL-55C
Page

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  • Page 1: Table Of Contents

    XL-55C MODEL XL- 55C Micro Component System consisting of XL- 55C (main Illustration XL-55 unit) and CP- XL55 (speaker system). • 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: Important Service Notes (For U.s.a. Only)

    XL-55/55C FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. IMPORTANT SERVICE NOTES (FOR U.S.A. 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

    XL-55/55C NAMES OF PARTS 1. CD Compartment 2. CD Eject Button 3. Volume Control 4. Cassette Compartment 5. Headphone Jack 6. Power On/Stand-by Button 7. Function Selector Button 8. CD or Tape Stop, Tuning Down Button 9. CD Play or Pause, Tape Play, Tuning Up Button 10.

  • Page 4: Disassembly

    XL-55/55C DISASSEMBLY (C2)x2 Caution on Disassembly ø3x10mm Main PWB (D2)x1 Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure (D1)x1 Rear Panel excellent performance: ø3x10mm 1. Take cassette tape and compact disc out of the unit.

  • Page 5: Removing And Reinstalling The Main Parts

    XL-55/55C (K1)x4 ø2.4x10mm (L1)x3 CD PWB ø2.6x10mm (K2)x1 ø2.6x10mm (K2)x1 ø2.6x10mm Top Cabinet Open/Close Switch PWB Top Cabinet (K3)x1 CD Mechanism (K3)x2 CD Mechanism Jack Figure 5-2 Figure 5-1 REMOVING AND REINSTALLING THE MAIN PARTS TAPE MECHANISM SECTION (A2)x1 (A2)x1 ø2x7mm...

  • Page 6: Cd Mechanism Section

    XL-55/55C How to remove the flywheel (See Fig. 6-1.) (E1)x1 Stop Washer Mechanism 1. Remove the belt. Chassis 2. Remove the stop washer (E1) x 1 pc., with a small precision Stop Driver screwdriver to extract the flywheel from the capstan metal.

  • Page 7: Adjustment

    XL-55/55C ADJUSTMENT MECHANISM SECTION • Driving Force Check • FM Mute Level Signal generator: 1 kHz, 40 kHz dev., FM modulated Torque Meter Specified Value Frequency Display Adjusting Instrument Play: TW-2412 Over 80 g Parts Connection • Torque Check 98.00 MHz 98.00 MHz...

  • Page 8: Test Mode

    XL-55/55C • Setting the Test Mode Keeping the REW/REV button and BASS/TREBLE button pressed, turn on POWER. Then, the frequency is initially set in the memory as shown in Table. Call it with the PRESET button to use it for adjustment and check of tuner circuit.
  • Page 9 XL-55/55C * In case of initialization the pickup is moved toward the inner periphery. Any buttons other than POWER ON/STAND-BY button are not accepted until the shift of pickup to the inner periphery is completed at this time. If PU-IN SW ON cannot be detected within 10 seconds, the slide motor is stopped, and the following error indication appears.
  • Page 10 XL-55/55C 5. Step 5 Mode The CD initialization operation flow is executed to the end, the mute is set to off, and playback is started. Even when the playback reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback past time as in case of ordinary CD playback.
  • Page 11 XL-55/55C 3. Preset frequencies for various destinations (random preset memory) BAND Europe 2, 4 Europe 2, 4 BAND BAND Europe 2, 4 FM 87.50 MHz AM 531 kHz 16-25 FM108.00 MHz AM1602 kHz FM106.00 MHz FM 98.00 MHz AM 990 kHz FM 90.00 MHz...

  • Page 12: Error List

    XL-55/55C 7. Key input diagnosis Test Mode (TEST 6) When the test mode is set, the following indication appears. This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode checking as to whether the "POWER ON/STAND-BY"...

  • Page 13: Notes On Schematic Diagram

    XL-55/55C 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 14: Block Diagram

    XL-55/55C FM MUTE LEVEL SWITCHING T302 VR351 VD301-1 10K(B) AM TRACKING R_MUTE Q351 SVC348S AM OSC OUT X351 456kHz 14 13 IC303 T306 FM IF DET./FM MPX./AM IF AM OSC. VD301-2 SVC348S LA1832S CNP301 AM/FM ANTENNA TERMINALS AM IF T351...
  • Page 15 XL-55/55C FM ST SO401 VIDEO/AUX IN R_MUTE TO DISPLAY AUX R CD+B IC461 SURROUND P MUTE Q463 Q461 KIA4558P OPE AMP. P-STB CNS704 WOOFER REC R CH R-CH OUT TAPE R TUN R CD R IC401 LOGIC LC75342M FUNCTION/VOLUME EQUALIZER...
  • Page 16 XL-55/55C CNS605 TO MAIN SECTION CNP605 LCD701 SW801 CD LID OPEN/CLOSE CNP702 COM3 CLID SW CLID_SW CD STB COM0 MCLK MRST MCLK MDATA X701 BLBCK 8MHz STAT X702 MDATA CD_STB 32.768MHz SW702-SW704 IC701 SW707-SW709 MRST BLKCK KEY1 IX0060SJ SW705,SW706 PU_IN...
  • Page 17 XL-55/55C CNS605 CD_L J801 A_GND DIGITAL CD_R TO MAIN SECTION D_GND CNP605 CD_6.2V M_GND D_GND CONSTANT SW801 VOLTAGE CD LID CD_6.2V OPEN/CLOSE Q804 X803 16.93MHz +6.2V DVDD1 DVSS1 M_GND MCLK CNP702 MDATA CLID SW IC801 AVSS2 CD STB MN6627482W AVDD2...

  • Page 18: Schematic Diagram

    XL-55/55C IC303 LA1832S FM IF DET./FM MPX./AM IF C374 R363 AM ANT AM TRACKING FM MUTE LEVEL 0.022 6.8K VR351 4.7V T302 (0V) R361 L353 D301 C371 0.022 C329 1N4148 1/50 R362 AM BAND COVERAGE fL C372 1/50 D302 24 23...
  • Page 19 XL-55/55C MAIN PWB-A1 CNP704 SO401 R406 STEREO AUX R FM ST R-CH C408 10/16 VIDEO/AUX IN C406 10/16 R405 C404 10/16 L-CH C402 10/16 R416 CD+B R410 P MUTE WOOFER P-STB C340 C413 0.001 0.001 CD L C401 10/16 TUN L...
  • Page 20 XL-55/55C LED PWB-A4 D708 D707 D709 MPG3372X MPG3372X MPG3372X R7D8 R7D3 R7D5 D704 D705 D706 MPG3372X MPG3372X MPG3372X R7D9 R7D6 R7D1 D702 D701 D703 MPG3372X MPG3372X MPG3372X R7E1 R7D2 R7D4 CFW701 SW707 REC/ PAUSE R708 SW708 <<REW PRESET DOWN R709 SW709 5.6K...
  • Page 21 XL-55/55C DISPLAY PWB-A2 LCD701 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 SEG25 2.5V SEG26 2.5V SEG27 2.5V 2.5V SEG28 SEG29 2.5V SEG30 2.5V SEG31 2.5V CLID_SW SEG32 2.5V CD_STB SEG33 2.5V...
  • Page 22 XL-55/55C CD SERVO PWB-A3 JACK PWB-A7 L806 0.82µH J801 C864 DIGITAL 100/10 SWITCH PWB-A6 SW801 CD LID OPEN/ CLOSE R823 1.8K R824 R825 5.6K R826 CD MOTOR PWB-C 6.3V 5.2V Q804 HSB562-C CNP803 CNW803 CNS803 NM802 SPINDLE SP– SP– –...
  • Page 23 XL-55/55C CD SIGNAL CNP702 CLID_SW CD_STB R849 MRST MCLK MDATA BLKCK STAT PICK_IN GVSW C867 R839 (CH) R856 R845 R898 R899 C837 M_GND C849 6.2V R854 10/50 D_GND 20 19 18 17 16 15 14 13 12 11 10 CD_R R852 3.9K...
  • Page 24 XL-55/55C POWER AMP. PWB-B2 C647 330P FM SIGNAL IC601 LA4451 POWER AMP. C605 R601 C613 4.7/25 C609 2200/35 47/50 R615 4.7K R603 R616 Q605A 4.7K KRC107 M R604 PROTECT CNP680 C629 Q609A D615 KRA107 M 220/50 1N4148 LCH_IN C652 R617A...

  • Page 25: Wiring Side Of P.w.board

    XL-55/55C IC601 C609 C603 C647 C610 C604 C607 POWER AMP. PWB-B2 C608 C648 C615 C605 R605 C613 R613 D611 C630 CNS604 R614 CNP651 C614 R618 C670 CNP680 Q603A 1 2 3 CNS680 D615 P28 3 - G 1 2 3...
  • Page 26 XL-55/55C R374 R373 X352 D308 R391 C391 R372 R365 R392 C380 R371 CHASSIS C395 R385 R380 R359 R386 C387 R384 R360 C396 R382 C394 R387 L351 C376 ZD351 FM BAND C393 COVERAGE fL FM MUTE R309 LEVEL C321 C370 C378...
  • Page 27 XL-55/55C MAIN PWB-A1 R106 Q105 B C E C110 Q106 R111 R131 B C E C391 R113 R132 C395 R112 R114 C111 C396 IC102 R103 12 10 8 6 4 2 ZD351 FROM DISPLAY PWB R126 C104 C103 P28 5 - E...
  • Page 28 XL-55/55C LED PWB-A4 CFW701A D707 D708 D701 D702 D703 D704 D705 D706 D709 R7D3 R7D4 R7E1 R7D1 R7D5 R7D9 R7D2 DISPLAY PWB-A2 Q701 C711 R750 R755 Q702 1 2 3 R756 E C B R7A2 R747 R7A1 R748 B C E...
  • Page 29 XL-55/55C J801 DIGITAL JACK PWB-A7 3 2 1 CNS605 TO MAIN PWB CNP605 FROM DISPLAY PWB P28 5 - G P27 7 - E CNS702 CFW807A R801 CNP702 CD SERVO PWB-A3 CNW805 CNW808A R855 C867 SW801 CD LID R854 CNW803...

  • Page 30: Waveforms Of Cd Circuit

    XL-55/55C WAVEFORMS OF CD CIRCUIT NO DISC FOCUS SEARCH CUE(TE) IC804 27pin IC801 27pin IC804 26pin IC804 3pin IC801 28pin IC801 33pin Figure 30-1 Figure 30-4 STOP PLAY(FE) REVIEW(TE) IC801 27pin RFDET IC801 38pin IC804 3pin IC801 44pin IC801 33pin...

  • Page 31: Troubleshooting

    XL-55/55C TROUBLESHOOTING 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-55/55C Make sure that the disc is normal, and set the CD TEST MODE (STEP 1). Is the measured voltage as specified in circuit diagram? Check the main unit power supply circuit. Is "Er-CD01" displayed"? Move the pickup to most internal circumference side of disc.
  • Page 33 XL-55/55C • Laser failure. Is +6.2V applied to the emitter of Q804 ? Check the PWB pattern between pin 5 of CNS605 and emitter of Q804. Check the peripheral parts of IC804 and Q804. Is +5V applied to the collector of Q804 ?
  • Page 34 XL-55/55C • Focus servo sawtooth wave failure. IC801 is faulty. Is sawtooh wave output to the pin 28 (FOO) of IC801 ? 1.5~2.5sec Check the PWB pattern between pin 5 of CNS605 and IC804. Is +6.2V applied to the pins 21 and 22 (VCC) of IC804 ?
  • Page 35 XL-55/55C • HF error. Is output (tracking error signal) obtained at the pins 33 (TE) Optical pickup failure. Is output obtained at the pins 2 and and 37 (TRCRS) of IC801 the CD TEST MODE "STEP 4" is 5 of CNS802 changed to "STEP 5"?
  • Page 36 XL-55/55C • Track search failure Check as stated in item "SLED MOTOR OPERATION FAILURE". Does the sled motor run in FF/REW state when the SERVO TEST MODE "STEP1" is set? Is the following wave output to the pin 27 (TRO) of IC801 IC801 failure.

  • Page 37: Function Table Of Ic

    XL-55/55C FUNCTION TABLE OF IC IC401 VHiLC75342M-1: Function/Volume Equalizer (LC75342M) Pin No. Port Name Function Serial data and clock input pin for control. Chip enable pin. Data written into an internal latch in a timing of [H] -> [L]. Each analog switch is activated.
  • Page 38 XL-55/55C IC701 RH-iX0060SJZZ: System Control Microcomputer (IX0060SJ) (1/2) Terminal Name Input/Output Pin No. Function COM3-COM0 Output LCD common output terminal. VLC3-VLC1 — LCD power supply terminal. — Microcomputer power supply +5V. OSC2 Output Oscillator ground terminal for main clock. f=8MHz...
  • Page 39 XL-55/55C IC701 RH-iX0060SJZZ: System Control Microcomputer (IX0060SJ) (2/2) Terminal Name Input/Output Pin No. Function SEG46 P63/A3 Output Power IC amplifier detect. SEG45 P64/A4 Output Fan control. SEG44 P65/A5 Output SEG43 P66/A6 Output SEG42 P67/A7 Input CD pickup position detection SW input. "L" = Innerst periphery...
  • Page 40 XL-55/55C IC801 VHiMN6627482W: Servo/Signal Control (MN6627482W) (1/2) Pin No. Terminal Name Input/Output Function BCLK Output SRDATA bit clock output. LRCK Output L/R identification signal output. SRDATA Output Serial data output. DVDD1 Input Digital circuit power supply. DVSS1 Input Digital circuit GND.
  • Page 41 XL-55/55C IC801 VHiMN6627482W: Servo/Signal Control (MN6627482W) (2/2) Pin No. Terminal Name Input/Output Function DSLF Input/Output DSL loop filter terminal. PLLF Input/Output PLL loop filter terminal. VCOF Input/Output VCO loop filter terminal. AVDD2 Input Analog circuit power supply. (DSL, PLL and DA output sections for AD)
  • Page 42 XL-55/55C IC801 VHiMN6627482W: Servo/Signal Control (MN6627482W) SUBCODE DSL • PLL VCO TIMING DIGITAL BUFFER DEEMPHSIS /RST GENERATOR /TEST PITCH CONTROL DEMODULATION 8TIMES CD-TEXT OVER BUFFER SYNC INTERPOLATION SAMPLING MICRO DIGITAL FILTER SUBCODE DEMODULATION COMPUTER RFENV INTERFACE CIRC ERROR CORRECTION 1 BIT DAC...
  • Page 43 XL-55/55C IC802 VHiAN22000A-1: Head Amp. (AN22000A) Terminal Name Function Pin No. APC amp input. APC amp output. Power supply. RF amp inverting input. RFOUT RF addition amp output. RFIN AGC amp input. CAGC AGC loop filter connection. AGC output. Capacitor for HPF-amp connection.

  • Page 44: Lcd Segment

    XL-55/55C LCD701: RV-LX0007SJZZ LCD Display 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42...

  • Page 45: 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 46 XL-55/55C PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK INTEGRATED CIRCUITS ZD601 VHEDZ130BSA-1 AC Zener,13V,DZ130A ZD602 VHEDZ7R5BSC-1 AB Zener,7.5V,DZ7.5C ZD701 VHEDZ3R3BSB-1 AB Zener,3.3V,DZ3.3BSB IC101 VHIBA3126N/-1 AF Head Selector,BA3126N IC102 VHIBA3311L/-1 AK REC./P.B.Equalizer Amp., FILTERS BA3311L IC301 VHITA7358AP-1 AG FM Front End,TA7358AP...
  • Page 47 XL-55/55C PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AB 10 µF,16V,Electrolytic C319 VCCCCY1HH180J AA 18 pF (CH),50V C625 RC-GZA106AF1C AA 0.001 µF,50V AB 47 µF,16V,Electrolytic C320 VCKYCY1HB102K C626 RC-GZA476AF1C AA 0.0033 µF,50V AB 0.022 µF,25V C321 VCKYCY1HB332K...
  • Page 48 XL-55/55C PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AB 100 µF,25V,Electrolytic C903 RC-GZA107AF1E R377 VRD-ST2CD562J AA 5.6 kohms,1/6W AA 0.022 µF,50V C904,905 VCKYCY1HF223Z R379 VRS-CY1JB222J AA 2.2 kohms,1/16W R380 VRD-ST2CD152J AA 1.5 kohms,1/6W RESISTORS R381 VRS-CY1JB103J AA 10 kohm,1/16W...
  • Page 49 XL-55/55C PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK R774~777 VRS-CY1JB102J AA 1 kohm,1/16W CNP301 QCNCM042CSJZZ J AB Plug,3Pin R778~780 VRS-CY1JB473J AA 47 kohms,1/16W CNP604 QCNCM010NAWZZ J AC Plug,13Pin R781 VRD-ST2CD473J AA 47 kohms,1/6W CNP605 QCNCM999FAFZZ J AE Plug,6Pin...
  • Page 50 Label,Serial No. GITAS0008SJSA AG Side Panel,Left [Except for Canada] GITAS0009SJSA AG Side Panel,Right TLABN0283SJZZ Label,Serial No. [For Canada] HBDGA1002SJSB AD SHARP Badge TLABRF254SJZZ Label,Bar Code [For Canada] HDECQ0108SJSA AF Cassette Holder Window TLABR1303SJZZ Label,Bar Code HDECQ0110SJSA AN CD Lid Window...
  • Page 51 XL-55/55C 307-3 307-1 307-2 702x2 NM802 NM801 306x2 SW800 PWB-C Figure 6 CD MECHANISM EXPLODED VIEW – 6 –...
  • Page 52 XL-55/55C PWB-A7 609x2 PWB-A2 PWB-A6 PWB-A4 LCD701 MECHANISM 603x3 PWB-A3 603x7 604x4 217 217-1, 217-2,217-3, 217-4,217-5,217-6, 217-7,217-8,217-9, 217-10,217-11 y y z |    603x4 Silicon Grease 608x2 Washer 606x2 Provided with PWB-B2 SW700 IC601 231x2 607x2 608x2 601x4...

  • Page 53: Packing Of The Set (For U.s.a. Only)

    XL-55/55C PACKING OF THE SET (FOR U.S.A. ONLY) Setting position of switches and knobs Tape Mechanism STOP Cassette Holder CLOSE CD Lid CLOSE Packing Add.,Top Polyethylene Bag,Set SPAKA0141SJZZ SPAKP0042SJZZ Label,Pop TLABM0071SJZZ Packing Add.,Bottom SPAKA0142SJZZ Label,Energy Star Label,Serial No. TLABZ0038SJZZ TLABN0282SJZZ...
  • Page 54 XL-55/55C –MEMO–...
  • Page 55 XL-55/55C –MEMO–...
  • Page 56 XL-55/55C © 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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