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Sharp XL-T300H Service Manual
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Sharp XL-T300H Service Manual

Sharp XL-T300H Service Manual

Compact audio system
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(Except for U.K.)
SAFETY PRECAUTION FOR SERVICE MANUAL .......................................................................................................... 2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) ......................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................ 3
NAMES OF PARTS .......................................................................................................................................................... 4
OPERATION MANUAL ..................................................................................................................................................... 6
DISASSEMBLY ................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS .................................................................................................. 10
ADJUSTMENT ................................................................................................................................................................ 12
TEST MODE ................................................................................................................................................................... 13
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 20
TYPES OF TRANSISTOR AND LED .............................................................................................................................. 20
BLOCK DIAGRAM .......................................................................................................................................................... 21
SCHEMATIC DIAGRAM ................................................................................................................................................. 24
WIRING SIDE OF P.W.BOARD ...................................................................................................................................... 34
WAVEFORMS OF CD CIRCUIT ..................................................................................................................................... 38
TROUBLESHOOTING .................................................................................................................................................... 39
FUNCTION TABLE OF IC .............................................................................................................................................. 45
LCD SEGMENT .............................................................................................................................................................. 47
PARTS GUIDE/EXPLODED VIEW
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
- 1 -
COMPACT AUDIO SYSTEM
XL-T300H
MODEL
XL-T300H Compact Audio System consisting of XL-T300H
(main unit) and CP-XLT300H (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-T300H
No. S4225XLT300H/
Page

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  • Page 1: Table Of Contents

    COMPACT AUDIO SYSTEM XL-T300H MODEL XL-T300H Compact Audio System consisting of XL-T300H (main unit) and CP-XLT300H (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: Safety Precaution For Service Manual

    XL-T300H SAFETY PRECAUTION FOR SERVICE MANUAL This product is classified as a CLASS 1 LASER PRODUCT. Precaution to be taken when replacing and servicing the Laser Pickup. The AEL (Accessible Emission Level) of Laser Power Output is less than Class 1 but the laser component is capable of emitting radiation exceeding the limit for Class1.

  • Page 3: Specifications

    XL-T300H FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS General Tuner Power source AC 230 V, 50 Hz Frequency range FM: 87.5 - 108 MHz Power on: 46 W Power consump-...

  • Page 4: Names Of Parts

    XL-T300H NAMES OF PARTS Front panel 1. CD/Cassette Compartment 2. Function Selector Button 3. Bass/Treble Selector Button 4. Memory/Set Button 5. Tape Record Pause Button 6. Volume Up and Down Buttons 7. CD or Tape Open/Close Button 8. CD Track Down or Fast Reverse, Tape Rewind, Tuner Preset Down Button 9.
  • Page 5 XL-T300H Remote control 1. Remote Control Transmitter 2. On/Stand-by Button 3. CD Button 4. Tuner and Band Selector Button 5. Timer Button 6. Clock Button 7. Memory Button 8. Dimmer Button 9. Surround Button 10. Volume Up and Down Buttons 11.

  • Page 6: Operation Manual

    XL-T300H OPERATION MANUAL Setting the clock Within 1 minute, press the PRESET ( ) button to adjust the hour and then press the MEMORY button. When the 12-hour display is selected, "AM" will change auto- matically to "PM". Within 1 minute, press the PRESET ( ) button to This may be operated only with the remote control.
  • Page 7 XL-T300H Turn on your System Accessories Press the ON/STAND-BY button to turn the power on. (Except for U.K.) (For U.K.) AC power lead x 1 Remote control x 1 AM loop aerial x 1 (Except for U.K.) Listening to a CD Press the FUNCTION button "AAA"...

  • Page 8: Disassembly

    XL-T300H DISASSEMBLY Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure CD Mechanism excellent performance: Top Cabinet 1. Take compact disc out of the unit. 2. Be sure to remove the power supply plug from the wall Hook outlet before starting to disassemble the unit.
  • Page 9 XL-T300H (E2) x2 (E1) x2 (E1) x3 ø3 x14mm ø3 x10mm (E2) x1 (D2) x1 (E1) x2 ø3 x10mm (C1) x1 ø3 x12mm Tuner PWB Main PWB (D1) x1 (C2) x1 ø3 x8mm (D2) x1 (C1) x1 (D1) x1 (F1) x4 ø3 x8mm...

  • Page 10: Removing And Reinstalling The Main Parts

    XL-T300H REMOVING AND REINSTALLING THE MAIN PARTS TAPE MECHANISM SECTION (A2)x1 (A2)x1 ø2x7mm ø2x3mm Perform steps 1 and 7 of the disassembly method to remove the tape mechanism. (See page 8,9.) (A1)x2 ø2x8mm How to remove the record / playback and erase heads (See Fig.
  • Page 11 XL-T300H How to remove the tape mechanism PWB (F1)x1 (F2)x1 (See Fig. 11-1.) ø2x3mm Tape ø2x8mm Mechanism 1. Remove the screws (F1) x 1 pc., to remove the tape Tape mechanism PWB. Mechanism 2. Remove the screws (F2) x 1 pc.

  • Page 12: Adjustment

    XL-T300H ADJUSTMENT TUNER SECTION MECHANISM SECTION • Driving Force Check fL: Low-range frequency fH: High-range frequency Torque Meter Specified Value • AM IF/RF Play: TW-2412 Over 80 g Signal generator: 400 Hz, 30%, AM modulated Frequency Frequency Display Setting/ Instrument •...

  • Page 13: Test Mode

    XL-T300H TEST MODE The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement, the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection. 1. Turning on the test mode For obtaining each test mode, press the ON/STAND-BY button, while keeping pressing the following two buttons in the ordinary stand-by mode (power off ).
  • Page 14 XL-T300H 2. Step 2 Mode Press the "CD PLAY" button in this mode to transmit the laser lighting command LDON (8400) and turn on the laser. Any other operations are not performed in this case. Press the following buttons in this state to obtain the operations specified below.
  • Page 15 XL-T300H 5. Step 5 Mode When the CD initialization operation flow is completed, the mute is turned off, and playback is started. Even if playback reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback passage time as in case of ordinary CD playback.
  • Page 16 XL-T300H 7. Step 7 Mode Press "MEMORY" key during step 6 operation to display automatically adjusted values on LCD in the order as below. Item names are displayed by left alignment, and adjusted values by right alignment in hexadecimal numbers. Operations other than display are as same as those for step 5.
  • Page 17 XL-T300H 3. Tuner Test Mode (TEST 02) 1. Outline of tuner (radio) test mode The tuner test mode is intended to store the adjustment and measurement frequencies in the preset memory CH. When adjusting the tuner section in the production line, adjusting personnel are not required to set frequency.
  • Page 18 XL-T300H 4. Electronic volume Test Mode (TEST 03) When this test mode is obtained, the following display lights for one second. In this mode, volume is -14 dB (STEP28), BASS/TREBLE is set to 0 (0 dB) and SURROUND mode to OFF, and start-up function to CD, respectively.
  • Page 19 XL-T300H 7. Button input diagnosis Test Mode (TEST 06) When the test mode is obtained, the following is displayed. This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode, it is checked whether the "ON/STAND-BY"...

  • Page 20: Notes On Schematic Diagram

    XL-T300H 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 21: Block Diagram

    XL-T300H TUNER PWB LOW PASS SWITCHING FILTER AM Band Tracking fL L354 Q351 FM MUTE T302 LEVEL X351 IC521 456kHz VD301 LC72723M SVC348S 15 14 VR351 T306 AM Band Coverage fL Q521 FE301 FM FRONT END BALUN FM IF FM IF...
  • Page 22 XL-T300H CNP703 CNP301 1 2 3 4 5 6 7 8 R-CH L-OUT IC102 L-CH A–12V SO401 BA3311L VIDEO/AUX INPUT REC./P.B. Q105 J801 Q106 EQUALISER DIGITAL REC MUTE AMP. TAPE MECHANISM ASS'Y SWITCHING RECORD/PLAY Q101-Q104 TERMINAL HEAD CNW101 CNP101 L-CH...
  • Page 23 XL-T300H FROM FROM TUNER PWB DISPLAY PWB CNP301 CNP702 14 13 12 MAIN PWB R-CH OUT R-CH IN O/AUX IC201 KIA4558P Q463 Q461 SURROUND CONTROL L-CH OUT L-CH IN IC401 RMINAL LC75342M FUNCTION/VOLUME EQUALISER R-CH OUT AUX R TUN R...

  • Page 24: Schematic Diagram

    XL-T300H AM ANT FM Mute Level Low PassFil T302 L354 C329 0.022 VR351 Tracking L353 C360 D301 0.022 1N4148 C335 D302 AM OSC 560P 1N4148 L341 R323 2.3V T306 AM Band BALUN Coverage 2.1V 2.1V FE301 FM FRONT END T351...
  • Page 25 XL-T300H R529 AM SIGNAL C527 R528 FM SIGNAL C526 16 15 14 13 12 11 10 (CH) IC521 Low PassFilter LC72723M L354 C525 4.7V (0V) R361 2.5V 5.6K C537 (CH) C522 C524 0.022 330P 560P R362 5.6K C372 1/50 R366 2.3V...
  • Page 26 XL-T300H SWITCH PWB-B2 SW728 PAUSE CD PLAY/ R705 SW727 PAUSE TUNING UP LCD701 R706 FL DISPLAY SW726 MEMORY/ 5.6K R707 CD STOP/ SW725 3.9K CLEAR TUNING DOWN R708 SW724 2.7K BASS/TREBLE R709 SW723 FF>> 2.2K PRESET UP R710 SW722 SW712 1.2K...
  • Page 27 XL-T300H MOTOR PWB-A3 DISPLAY PWB-B1 IC804 M801(243-6) TA7291S CD LID CNP902C CD LID MOTOR DRIVER LCD701 FL DISPLAY C840 SWITCH PWB-B3 R845 150K R834 R836 R847 3.3K 1.8K Q807 KRC102 M SW802 CNW902A CD LID Q806 KRC102 M R825 2.2K...
  • Page 28 XL-T300H FROM TUNER PWB-C CNS301 P25 11-D,E 14 13 12 11 10 9 8 7 6 5 4 3 CNP301 CNP702 FM SIGNAL CD SIGNAL PLAYBACK SIGNAL RECORD SIGNAL TERMINAL PWB-A2 R406 R408 R-CH 2.7K L402 R402 CNW401 L401 AUX R SO401 2.2µH...
  • Page 29 XL-T300H FROM R PWB-C DISPLAY PWB-B1 NS301 CNW702 11-D,E P27 12-F 8 7 6 5 4 3 9 10 11 12 13 CNP702 MAIN PWB-A1(1/3) C464 R462 1/50 8.2K C462 C474 0.0056 4.7/50 R476 R478 C476 1/50 R468 R467 IC201...
  • Page 30 XL-T300H MAIN PWB-A1(2/3) CD PICK-UP UNIT (308) HPC-3LX C801 0.022 C802 A_3.3V A3.3V 47/16 C807 100/10 R802 C812 100/10 R803 C806 0.022 R804 3.3V R805 C817 R806 1.6V 1.6V R818 VREF R801 1.1V C818 R821 1.6V 2.3V C815 8.2K 1.6V...
  • Page 31 XL-T300H CD SIGNAL CD_STB R848 CD_RES R849 R859 BUCK R841 BUS3 R842 BUS2 R843 BUS1 R844 BUS0 PU_IN GVSW CNP704 A3.3V C817 R818 R855 C818 C835 R821 C824 DOUT (CH) 8.2K (CH) R816 R833 R829 5.6K C819 C825 RFGO 100/10...
  • Page 32 XL-T300H MAIN PWB-A1(3/3) PLAYBACK SIGNAL RECORD SIGNAL TAPE MECHANISM ASS'Y(212) Q101 Q103 R101 KTC3199 GR KTC3199 GR 1.5V RECORD/PLAY (0V) HEAD C101 C113 CNW101 0.001 4.7/25 L-CH R126 5.6K Q102 0.3V C121 Q104 (8.3V) R140 KTC3199 GR KTC3199 G R-CH 1.5V...
  • Page 33 XL-T300H R111 R105 R115 150K R103 R107 Q101 Q103 R109 R117 C3199 GR KTC3199 GR C129 3.9K 0.7V C109 1.5V C107 0.015 (0V) 47/16 4.7/25 Q105 R131 C111 C115 KTC3199 GR 4.7K 10/16 0.0012 Q102 C105 Q104 TC3199 GR 270P...

  • Page 34: Wiring Side Of P.w.board

    XL-T300H TAPE MECHANISM ASS'Y (212) P37 8-G FROM MAIN PWB-A1 CNW901 M901(212-9) RECORD/PLAYBACK TAPE HEAD MOTOR ERASE HEAD 7 6 5 4 3 2 1 SW901 (212-7) SW902 (212-8) FOOL PROOF PH901 PHOTO INTERRUPTER TAPE MECHANISM PWB-E,F SOL901 (212-4) SOLENOID...
  • Page 35 XL-T300H FROM MAIN TO MAIN PWB-A1 PWB-A1 CNW802 CNP801 P37 10-F P37 10-E CD PICKUP UNIT (308) CD MOTOR PWB-D M702 SLED MOTOR CNP703A CNW801 SW702 PICKUP IN 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16...
  • Page 36 XL-T300H FAN MOTOR M802 J801 SO401 DIGITAL OUT VIDEO/AUX IN RIGHT LEFT JK601 CHASSIS RIGHT HEADPHONES JACK C865 C413 R408 L804 L401 C866 L202 CNP401 CNW804 D452 C864 D451 R231 E C B Q206 TERMINAL PWB-A2 R230 B C E...
  • Page 37 XL-T300H When Servicing, Pay attention as the area enclosed SO601 by this line ( ) is directly SPEAKER connected with AC main voltage. T651 TERMINAL POWER TRANSFORMER (MAIN) SO651 RIGHT LEFT AC POWER INPUT SOCKET AC 230V,50Hz C223 L202 C224...

  • Page 38: Waveforms Of Cd Circuit

    XL-T300H WAVEFORMS OF CD CIRCUIT NO DISC FOCUS SEARCH STOP PLAY TMAX IC801 33pin IC801 16pin SBOK IC803 26pin IC801 8pin IC801 41pin IC803 25pin FOCUS SEARCH TOC IL STOP PLAY IC801 38pin IC801 31pin IC801 29pin IC801 34pin IC801 31pin...

  • Page 39: Troubleshooting

    XL-T300H 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 40 XL-T300H 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 41 XL-T300H • Laser failure. Is +6.8V applied to the emitter of Q605 ? Check the PWB pattern between emitter of Q605 and R826. Check the peripheral parts of ZD801,C820 and C821. Is +5V applied to the cathode side of ZD801 ?
  • Page 42 XL-T300H • Focus servo sawtooth wave failure. IC801 is faulty. Is sawtooh wave output to the pin 33 (FOO) of IC801 ? 1.5~2.5sec Is +6.8V applied to the pins 21 and 22 (VCC) of IC803 ? Check the PWB pattern between pin emitter of Q605 and IC803.
  • Page 43 XL-T300H • HF error. Is output (tracking error signal) obtained at the pins 31 (TEI) Optical pickup failure. Is output obtained at the pins 3 and and 32 (TEZI) of IC801 the CD TEST MODE "STEP 4" is 8 of CNP801/CNW801.
  • Page 44 XL-T300H • 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 34 (TRO) of IC801 IC801 failure.

  • Page 45: Function Table Of Ic

    XL-T300H 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 46 XL-T300H IC401 VHiLC75342M-1: Function/Volume Equalizer (LC75342M) TEST VSS CE CL VDD Vref LOUT ROUT LBASS2 RBASS2 LBASS1 RBASS1 LTRE RTRE RSEL0 LSEL0 14 15 16 17 Figure 46 BLOCK DIAGRAM OF IC – 46 –...

  • Page 47: Lcd Segment

    XL-T300H LCD701: RV-LX0016SJZZ 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 48 XL-T300H –MEMO– – 48 –...
  • Page 49 XL-T300H PARTS GUIDE COMPACT AUDIO SYSTEM XL-T300H MODEL XL-T300H Compact Audio System consisting of XL-T300H (main unit) and CP-XLT300H (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 50 XL-T300H PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK INTEGRATED CIRCUITS D451,452 VHD1N4148//-1 AA Silicon,1N4148 D461 VHD1N4148//-1 AA Silicon,1N4148 D521 VHD1N4148//-1 AA Silicon,1N4148 IC101 VHIBA3126N/-1 AF Head Selector,BA3126N D601,602 VHD1N4148//-1 AA Silicon,1N4148 IC102 VHIBA3311L/-1 AK REC./P.B.Equaliser Amp., 1 D651~654...
  • Page 51 XL-T300H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK AA 0.0012 µF,50V AB 10 µF,16V,Electrolytic C115,116 VCKYCY1HB122K C401,402 RC-GZA106AF1C AB 10 µF,16V,Electrolytic AB 10 µF,16V,Electrolytic C117 RC-GZA106AF1C C403 RC-EZD106AF1C AB 0.022 µF,25V AB 10 µF,16V,Electrolytic C118 VCKYCY1EF223Z C404~408 RC-GZA106AF1C AB 0.0047 µF,50V...
  • Page 52 XL-T300H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK C827 VCCCCY1HH471J AA 470 pF (CH),50V R201,202 VRD-ST2CD102J AA 1 kohm,1/6W AA 0.01 µF,50V C828 VCKYCY1HB103K R203,204 VRD-ST2EE103J AA 10 kohm,1/4W AC 0.033 µF,25V C829 VCKYCY1EB333K R205 VRD-ST2EE332J AA 3.3 kohms,1/4W...
  • Page 53 XL-T300H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK R528,529 VRD-ST2CD102J AA 1 kohm,1/6W R819 VRD-ST2CD333J AA 33 kohms,1/6W R532 VRS-CY1JB103J AA 10 kohm,1/16W R820 VRS-CY1JB103J AA 10 kohm,1/16W R533,534 VRS-CY1JB563J AA 56 kohms,1/16W R821 VRD-ST2CD822J AA 8.2 kohms,1/6W...
  • Page 54 XL-T300H PRICE PRICE DESCRIPTION PART CODE PARTS CODE DESCRIPTION RANK RANK CNW704 QCNWN0424SJZZ J Connector Ass’y,10-10Pin HDECQ0081SJSA AE LCD Window CNW705 QCNWN0425SJZZ J Connector Ass’y,7-7Pin HDECQ0082SJSA AF Plate,Decoration CNW751 QCNWN0459SJZZ J Connector Ass’y,2-2Pin HDECQ0083SJSA Indicator Panel,LCD CNW801 QCNWN0420SJZZ J Flat Cable,16Pin...
  • Page 55 XL-T300H PRICE PART CODE DESCRIPTION RANK HPNLS1011SJ01 AQ Front Panel Ass’y 904- 1 ———— — Front Panel (Not Replacement Item) 904- 2 HDECQ0072SJSA AK Ring Tweeter 904- 3 PDUC-0004SJZZ AF Duct Pipe PSPAG0004SJZZ AE Gsket QTANA9014SJZZ AE Terminal TSPC-0300SJZZ Specification Label XTBSF30P12000 AA Screw,ø3×12mm...
  • Page 56 XL-T300H 308-3 308-1 308-2 702x2 M701 307x2 M702 306x2 SW702 PWB-D Figure 7 CD MECHANISM EXPLODED VIEW – 7 –...
  • Page 57 XL-T300H 616x2 613x4 yy zz    y z | 604x2 T651 Q605 616x2 Q602 Q603 617x2 Silicon Grease IC601 601x3 Silicon BELT CONNECTION Grease Motor FF/REW Clutch Main 611x2 Belt 616x2 FF/REW 240x6 Flywheel Belt 243-1 243-4 PWB-A1...
  • Page 58 XL-T300H Tweeter SP603 (L-CH) SP604 (R-CH) 904-1 Capacitor Black Black 910x2 903-2x2 904-3 903-1 904-2 Woofer SP601 (L-CH) SP602 (R-CH) 910x2 903-2x2 903-3 908x2 SP603 SP604 SP601 SP602 909x4 902x2 Tweeter SP603 (L-CH) SP604 (R-CH) Capacitor 2.2µF,50V Woofer SP601 (L-CH)

  • Page 59: Packing Method (For U.k. Only)

    XL-T300H PACKING METHOD (FOR U.K. ONLY) 1. AC Power Supply Cord QACCB0003SJ00 11. Polyethylene Bag, Accessories SSAKA0009SJZZ 2. AM Loop Antenna QANTL0001SJZZ 12. Polyethylene Bag, Unit SSAKH0018SJZZ 3. FM Antenna QANTW0002SJZZ 13. Register Card TCADN0003SJZZ 4. Speaker Wire QCNWH0009SJZZ 14. Operation Manual TINSE0082SJZZ 5.
  • Page 60 XL-T300H © COPYRIGHT 2002 BY SHARP CORPORATION 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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