Sharp CD-BK250W Service Manual
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Sharp CD-BK250W Service Manual

Sharp CD-BK250W Service Manual

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Illustration: CD-BK250W/CD-BK2600W
Illustration: CD-BK270W
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION ..................................................................................................................................................... 2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
OPERATION MANUAL ...................................................................................................................................................... 7
DISASSEMBLY .................................................................................................................................................................. 9
REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 12
ADJUSTMENT ................................................................................................................................................................. 13
BLOCK DIAGRAM ........................................................................................................................................................... 17
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .............................................................................................. 20
VOLTAGE ........................................................................................................................................................................ 38
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 39
TYPES OF TRANSISTOR AND LED ............................................................................................................................... 39
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 40
TROUBLESHOOTING ..................................................................................................................................................... 41
FUNCTION TABLE OF IC ................................................................................................................................................ 45
FL DISPLAY ..................................................................................................................................................................... 53
REPLACEMENT PARTS LIST/EXPLODED VIEW
SERVICE MANUAL
MODEL
MODEL
MODEL
CONTENTS

SHARP CORPORATION

- 1 -
CD-BK250W/CD-BK2600W/CD-BK270W
MINI COMPONENT SYSTEM
CD-BK250W
CD-BK250W Mini Component System consisting of
CD-BK250W (main unit) and CP-BK250 (speaker system).
MINI COMPONENT SYSTEM
CD-BK2600W
CD-BK2600W Mini Component System consisting of
CD-BK2600W (main unit) and CP-BK2600 (speaker system).
MINI COMPONENT SYSTEM
CD-BK270W
CD-BK270W Mini Component System consisting of
CD-BK270W (main unit), CP-BK270 (front speakers) and
GBOXS0070AWM1 (surround speakers).
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
No. S5136CDBK250W
Page

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Summary of Contents for Sharp CD-BK250W

  • Page 1: Table Of Contents

    SERVICE MANUAL No. S5136CDBK250W MINI COMPONENT SYSTEM CD-BK250W MODEL CD-BK250W Mini Component System consisting of CD-BK250W (main unit) and CP-BK250 (speaker system). Illustration: CD-BK250W/CD-BK2600W MINI COMPONENT SYSTEM CD-BK2600W MODEL CD-BK2600W Mini Component System consisting of CD-BK2600W (main unit) and CP-BK2600 (speaker system).

  • Page 2: Safety Precaution For Service Manual

    CD-BK250W/CD-BK2600W/CD-BK270W 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-BK250W/CD-BK2600W/CD-BK270W FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS CD-BK250W/CD-BK2600W CD-BK270W General General Power source AC 110/127/220/230 - 240 V, 50/60 Hz Power source AC 110/127/220/230 - 240 V, 50/60 Hz...

  • Page 4: Names Of Parts

    CD-BK250W/CD-BK2600W/CD-BK270W NAMES OF PARTS Front panel CD-BK250W/CD-BK2600W/CD-BK270W 1. Disc Tray 2. Timer Set Indicator 3. On/Stand-by Button 4. Tape 2 Cassette Compartment 5. Tape 1 Cassette Compartment 6. Equalizer Mode Select Button 7. Volume Up and Down Buttons 8. Extra Bass/Demo Mode Button 9.

  • Page 5: Rear Panel

    CD-BK250W/CD-BK2600W/CD-BK270W Rear panel CD-BK250W/CD-BK2600W 1. FM 75 Ohms Aerial Terminal 2. FM Aerial Earth Terminal 3. AM Loop Aerial Socket 4. Span Selector Switch 5. Video/Auxiliary (Audio Signal) Input Sockets 6. Speaker Terminals 7. AC Power Lead 8. AC Voltage Selector CD-BK270W 1.

  • Page 6: Remote Control 1

    CD-BK250W/CD-BK2600W/CD-BK270W Front speaker CP-BK270 1. Tweeter 2. Woofer 3. Bass Reflex Duct 4. Speaker Wire Surround speaker (CD-BK270W Only) GBOXS0070AWM1 1. Full-Range Speaker 2. Speaker Wire Remote control CD-BK250W/CD-BK2600W/CD-BK270W 1. Remote Control Transmitter 2. Echo Level Up and Down Buttons 3.

  • Page 7: Operation Manual

    CD-BK250W/CD-BK2600W/CD-BK270W OPERATION MANUAL Setting the Clock Press the TUNING/TIME ( or ) button to adjust the hour and then press the MEMORY/SET button. Press the TUNING/TIME ( ) button once to advance the time by 1 hour. Hold it down to advance continuously.

  • Page 8: Troubleshooting Chart

    Many potential "problems" can be resolved by the owner without calling a service technician. If something is wrong with this product, check the following before calling your autho- Symptom Possible cause rised SHARP dealer or service centre. Cannot record. Is the erase-prevention tab removed? General Cannot record tracks with proper Is it a normal tape? (You cannot record on sound quality.

  • Page 9: Disassembly

    4. Hook ......(C3) x2 ø3x10mm (A1)x2 5. Socket ..... (C4) x2 ø3x12mm Rear Panel with 1. Screw ....(D1) x11 Fan Motor (For CD-BK250W/CD-BK2600W) 1. Screw ....(D1) x14 Side Panel (For CD-BK270W) (Left) 2. Socket ..... (D2) x1 (For CD-BK250W/CD-BK2600W) (B1)x4 2.
  • Page 10 CD-BK250W/CD-BK2600W/CD-BK270W CD-BK270W (G1)x1 ONLY Lock Lever (G3)x1 Display (K2)x1 (K1)x2 ø3x10mm (G2)x12 ø3x10mm Mic PWB CD Player Unit Tape (Bottom View) Mechanism Front Panel Lug Wire Open (H1)x5 ø3x10mm Cassette Holder Figure 10-1 (J1)x1 ø3x10mm Lug Wire Headphones Clamp Lever...
  • Page 11 CD-BK250W/CD-BK2600W/CD-BK270W (P2)x3 Mechanism (N1)x1 Slide CD Servo ø3x8mm Chassis (N3)x2 (P1)x1 (P1)x1 (N2)x2 Slide Chassis (N3)x2 Figure 11-1 Figure 11-2 CP-BK250/CP-BK2600/CP-BK270 STEP REMOVAL PROCEDURE FIGURE Front Panel 1. Net ......(A1) x1 11-3 Woofer 1. Screw ..... (B1) x4 11-4 Tweeter 1.

  • Page 12: Removing And Reinstalling The Main Parts

    CD-BK250W/CD-BK2600W/CD-BK270W REMOVING AND REINSTALLING THE MAIN PARTS TAPE 2 TAPE MECHANISM SECTION Clutch Ass'y Perform steps 1 to 6 and 8 of the disassembly method to Record/Playback remove the tape mechanism. Head How to remove the record/playback and erase heads (TAPE 2) (See Fig. 12-1) Erase Head 1.

  • Page 13: Adjustment

    CD-BK250W/CD-BK2600W/CD-BK270W CD MECHANISM SECTION Loading Motor Perform steps 1, 2, 3, 11,12, 13 and 14 of the disassembly Loading Slide method to remove the CD mechanism. Motor PWB Chassis How to remove the loading motor (See Fig. 13-1) (A1)x1 (A1)x2 1.

  • Page 14: Tuner Section

    CD-BK250W/CD-BK2600W/CD-BK270W • FM RF TUNER SECTION Signal generator: 1 kHz, 40 kHz dev., FM modulated fL: Low-range frequency fH: High-range frequency Test Stage Frequency Frequency Setting/ Instrument • AM IF/RF Display Adjusting Connection Point Signal generator: 400 Hz, 30%, AM modulated FM Band —...

  • Page 15: Test Mode

    CD-BK250W/CD-BK2600W/CD-BK270W TEST MODE • Setting the test mode Any one of test mode can be set by pressing several keys as follows. <X-BASS> + <CD> + <POWER> TEST:CD operation test Function: -CD test mode. -Enter test mode. T E S T IL isn't done OPEN/CLOSE operation is using manual.
  • Page 16 CD-BK250W/CD-BK2600W/CD-BK270W Standard Specification of Stereo System Error Message Display Contents Error Contents DISPLAY Notes Output while Device Protection Operation 'PROTECT' 00: While in Protect Circuit Operate 01: Over Current Detection 02: DC Detection TAPE Mechanism Error 'ER-TA**' 00: Tape Mechanism Error...

  • Page 17: Block Diagram

    CD-BK250W/CD-BK2600W/CD-BK270W DISC CLAMP NUMBER OPEN/ CLOSE T/T UP DOWN LOADING TO MAIN SECTION TO DISPLAY SECTION 43 44 LC78645E CD SERVO XOUT 17 25 CONT5 SLDO SPDO VCC1 M63001FP VCC4 FOCUS/TRACKING/ VCC2 SPIN/SLED +3.3V DRIVER VCC3 +3.3V 26 27 CONSTANT...
  • Page 18 CD-BK250W/CD-BK2600W/CD-BK270W ANTENNA IC301 TA7358AP SO302 FM FRONT END FM IF 10.7 MHz T302 CF303 BF301 X351 450kHz CF351 456 kHz B.P.F T351 CF352 AM IF FM L312 T301 ANTENNA OSC BUFF IC303 CNP301 Q302 LA1832S AM TRACKING FM IF DET.
  • Page 19 JK701 HEADPHONES SP. DET. Q907 Q908 M901 Q906 MOTOR Q914 SO901 SPEAKER TERMINAL –20 dB Q902 Q903 Q601 Q905 CD-BK250W/CD-BK2600W: 6 ohms –B2 RL914 Q602 Q904 CD-BK270W: 8 ohms L-OUT R-OUT – +Vcc IC901 SURROUND PT801 STK4029S POWER SPEAKER TRANSFORMER TERMINAL POWER AMP.

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

    CD-BK250W/CD-BK2600W/CD-BK270W MAIN PWB-A1(1/3) R601 R-CH R602 A_GND IC601 L-CH CD_GND LC75341 AUDIO PROCESSOR CD_+B A_+B R604 C610 BI601 1/50 CNS601 VREF 22/5 + – INTERFACE ROUT LOUT Q602 R616 C608 (A_+B) SW_5V KTC3199 GR R606 2.2K 3.9K LBASS RBASS R610...
  • Page 21 CD-BK250W/CD-BK2600W/CD-BK270W P30 6 - C TO MIC PWB CNPK1 CNSK1 BIK1 FM SIGNAL PLAYBACK SIGNAL VIDEO SIGNAL IC601 LC75341 RECORD SIGNAL PROCESSOR R603 CD SIGNAL C603 VREF 22/50 + – TERFACE MIC SIGNAL C607 C609 R605 ROUT 1/50 FFC701 R607 RBASS 3.9K...
  • Page 22 CD-BK250W/CD-BK2600W/CD-BK270W IC901 STK4029S L-CH R-CH POWER AMP. C939 820P R942 R988 C938 R981 C940 820P 100/50 R986 C936 R982 R934 R944 R938 R950 C935 C946 C945 0.1(1W) 4.7/50 10/50 10/50 R949 R940 R936 0.1(1W) D913 Q904 R952 KTC3199 GR R956...
  • Page 23 L-CH R973 SURROUND L921 SP_LCH SPEAKER PWB-G2 SP_RCH CD-BK270W ONLY L920 SP_LCH_GND SP_RCH_GND SO901 SPEAKER TERMINAL CD-BK250W/CD-BK2600W: 6 ohms CD-BK270W: 8 ohms C901 SW801 BI902 CNS902 CNP902 F901 VOLTAGE SELECTOR T4A L 250V (ML) C902 F902 T4A L 250V 230-240 V...
  • Page 24 CD-BK250W/CD-BK2600W/CD-BK270W AM ANT. T303 C340 0.001 AM TRACKING fL C331 C323 0.047 C330 0.022 C332 0.022 C338 0.001 D301 DS1SS133 R365 C342 D302 DS1SS133 T306 0.022 VD301 SVC348S C335 R358 OSC. 560P 3.9K 0.01 C334 R336 R323 AM BAND (CH)
  • Page 25 CD-BK250W/CD-BK2600W/CD-BK270W TP302 R365 R363 R358 3.9K R350 2.7K R362 X351 C367 456 kHz 1/50 20 19 18 15 14 13 R352 R353 ZD351 DZ5.1BSB C396 100/10 C395 C397 0.022 0.022 R392 R382 R381 L351 R391 100µH Q360 KTA1266 GR R383 5.6K...
  • Page 26 CD-BK250W/CD-BK2600W/CD-BK270W DISPLAY PWB-B1 FL701 FL DISPLAY 49 48 47 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 16 15 14 13 Q703 KTC3199 GR R746 C706...
  • Page 27 CD-BK250W/CD-BK2600W/CD-BK270W P29 12 - B TO CD SERVO PWB CNP8 CNS8 BI701 FFC701 MIC IN KARAOKE LATCH SPAN 31 30 29 28 27 26 25 24 23 16 15 14 13 12 11 10 9 8 7 6 3 2 1...
  • Page 28 CD-BK250W/CD-BK2600W/CD-BK270W PICKUP UNIT CD SERVO PWB-C CD SIGNAL VREF VREF 0.047(ML) 80 79 SLCO CNP1 SLCI EFMI 100P RFVD 0.0047 RSVS FIN1 FIN2 TIN1 (CH) TIN2 VREF 10/50 REFI 100/10 TR– TR– 0.22/50 RFMO FO– FO– JITTC 100P FO– ADAV ADAVS TR–...
  • Page 29 CD-BK250W/CD-BK2600W/CD-BK270W R38 1K 100P R37 1K 100P R36 1K 100P R35 1K R34 1K 100P R33 1K R32 1K 100P 0.022 2.2K CD RES CLAMP SW 0.047(ML) 2.2K 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61...
  • Page 30 CD-BK250W/CD-BK2600W/CD-BK270W MIC PWB-G1 MIC SIGNAL CK48 220P RK47 CK41 CK53 RK46 8.2K 100/16 47/50 ICK1 DS1SS133 CK50 M65856SP CK46 100P MIC AMP. 2.2/50 RK45 RK11 6.8K DATA MICSW DS1SS133 CK35 0.01 CK51 RK10 MCLKCONT CLOCK RK49 1/50 CK34 CK49 VACL...
  • Page 31 CD-BK250W/CD-BK2600W/CD-BK270W AC POWER TRANSFORMER PWB-A3 SUPPLY CORD AC 110/127/220/230-240 V 50/60 Hz 230-240 V 220 V 110 V 127 V LUG2 LUG1 SW801 VOLTAGE SELECTOR PT801 POWER TRANSFORMER POWER PWB-A2 F904 T2A L 250V F901 T4A L 250V D908 C909...
  • Page 32 C945 R937 R936 R939 C940 R938 C937 C936 C941 R-CH C939 R934 C938 SO901 SPEAKER TERMINAL L920 R902 CD-BK250W/CDBK2600W: 6 ohms IC901 R901 CD-BK270W: 8 ohms R941 C953 L921 L-CH R955 R959 BI903 SURROUND SPEAKER RL914 TERMINAL R-CH CNR1 L-CH...
  • Page 33 CD-BK250W/CD-BK2600W/CD-BK270W P30 5 - G TO MIC PWB CNPK1 CNSK1 P36 5 - A TO CD SERVO PWB CNP7 CNS601 1 2 3 4 5 6 MAIN PWB-A1 COLOR TABLE BROWN C620 C616 Q107 R D ( R ) R137...
  • Page 34 CD-BK250W/CD-BK2600W/CD-BK270W DISPLAY PWB-B1 9 10 11 12 13 14 15 16 Q703 Q701 Q702 CNS8 C701 R702 C702 R703 R704 RX701 R568 R566 R571 R708 C565 C564 COLOR TABLE R567 Q709 3 2 1 BROWN C715 L701 D715 R565 C716...
  • Page 35 CD-BK250W/CD-BK2600W/CD-BK270W P33 9 -H TO MAIN PWB CNP701 FFC701 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 47 48 49 FL701 9 11 13 15 17 19 21 23...
  • Page 36 CD-BK250W/CD-BK2600W/CD-BK270W P34 1 - C P33 9 - B FROM DISPLAY PWB FROM MAIN PWB CD SERVO PWB-C CNS11 CNS703 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 CNP7 CNP8 61 60 65 55...
  • Page 37 CD-BK250W/CD-BK2600W/CD-BK270W P34 4 - H TAPE MECHANISM TO DISPLAY PWB ASSEMBLY CNS702 FFC702 TAPE MECHANISM PWB-F 8 10 SOLENOID SOLENOID TAPE MOTOR TAPE 1 PLAYBACK HEAD TAPE 2 RECORD/PLAYBACK/ERASE HEAD 654321 CNS102 P33 11 - D CNP101 TO MAIN PWB...

  • Page 38: Voltage

    CD-BK250W/CD-BK2600W/CD-BK270W VOLTAGE IC303 IC701 ICICK1 NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE 3.7 V 5.28 V 1.6 V 1.7 V 2.09 V 4.77 V 0.8 V 1.0 V 3.7 V 1.7 V 5.17 V 4.68 V...

  • Page 39: Notes On Schematic Diagram

    CD-BK250W/CD-BK2600W/CD-BK270W 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 40: Waveforms Of Cd Circuit

    CD-BK250W/CD-BK2600W/CD-BK270W WAVEFORMS OF CD CIRCUIT Stopped 1999/04/07 09:51:15 Stopped CH1=200 mV CH2=500 mV 500 ms/div DC 10:1 DC 10:1 (500 ms/div) CH1=500 mV CH3=500 mV 500 ms/div DC 10:1 DC 10:1 (500 ms/div) NORM:20 kS/s NORM:20 kS/s IC1 21 IC1 21...

  • Page 41: Troubleshooting

    CD-BK250W/CD-BK2600W/CD-BK270W TROUBLE SHOOTING 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 42 CD-BK250W/CD-BK2600W/CD-BK270W Stopped (1) Focus-HF system check. CH1=500 mV CH3=500 mV 500 ms/div DC 10:1 DC 10:1 (500 ms/div) NORM:20 kS/s Although a CD is inserted and the cover is closed, "NO DISC" is displayed. Press the OPEN/CLOSE switch (SW1) without inserting a disc, and try starting the playback operation.
  • Page 43 CD-BK250W/CD-BK2600W/CD-BK270W (2) Tracking system check. Check the TE waveform at pin 15 on IC1. The tracking servo is not activated. If the waveform shown in Figure 43-1 appears and soon after Check the peripheral circuits at pins 14, 15 and 20 on IC1, and NO DISC appears ? CNS1A/B.
  • Page 44 CD-BK250W/CD-BK2600W/CD-BK270W (4) PLL system check. Stopped 1999/04/05 17:33:17 CH1=500 mV CH3=1 V CH4=1 V 500 ms/div DC 10:1 DC 10:1 DC 10:1 (500 ms/div) NORM:20 kS/s PDO1 When a disc is loaded, start play operation. The HF waveform is normal, but the TOC data cannot be PDO2 read.

  • Page 45: Function Table Of Ic

    CD-BK250W/CD-BK2600W/CD-BK270W FUNCTION TABLE OF IC IC1 VHiLC78645E-1: CD Servo (LC78645E) (1/2) Terminal Name Input/Output Setting in Reset Pin No. Function SLCO Output — Control output. For slice level SLCIST Input — Resistor connection terminal for SLCO output current setting. control.
  • Page 46 CD-BK250W/CD-BK2600W/CD-BK270W IC1 VHiLC78645E-1: CD Servo (LC78645E) (2/2) Terminal Name Input/Output Setting in Reset Function Pin No. RVSS — — GND for Right channel. Must be connected to 0 V. Right channel RCHO Output LVDD /2 Right channel output. D/A converter...
  • Page 47 CD-BK250W/CD-BK2600W/CD-BK270W IC1 VHiLC78645E-1: CD Servo (LC78645E) 75 74 72 71 69 68 66 65 63 62 SLCO DATA SLCIST DATACK EFMIN LRSY ASDFIN RFVDD ASDACK RFVSS ASLRCK FIN1 A 16MOUT FIN2 B EFLG TIN1 E TIN2 F XVSS LC78645E VREF...
  • Page 48 CD-BK250W/CD-BK2600W/CD-BK270W IC701 RH-iX0427AWZZ: System Microcomputer (IX0427AW) (1/2) Pin No. Port Name Terminal Name Input/Output Function Input (+) POWER SUPPLY. -20 dB ATT Output -20 dB ATTENUATOR. NO USE Output DSA_STB Input/Output DSA STRUBE T_BIAS Output TAPE RECORD BIAS. T_T1/T2 Output TAPE T1/T2 CHANGE.
  • Page 49 CD-BK250W/CD-BK2600W/CD-BK270W IC701 RH-iX0427AWZZ: System Microcomputer (IX0427AW) (2/2) Pin No. Port Name Terminal Name Input/Output Function P124 T 1 RUN Input TAPE 1 RUN PULSE INPUT. P123 T 2 RUN Input TAPE 2 RUN PULSE INPUT. P122 CD CLAMP SW Input CD CHANGER CLAMP SWITCH.
  • Page 50 CD-BK250W/CD-BK2600W/CD-BK270W IC601 VHiLC75341/-1: Audio Processor (LC75341) ROUT LOUT LBASS RBASS LTRE RTRE LSEL0 RSEL0 R1 R2 24 23 22 21 20 19 18 17 16 15 14 13 LC75341 10 11 12 Figure 50 BLOCK DIAGRAM OF IC – 50 –...
  • Page 51 CD-BK250W/CD-BK2600W/CD-BK270W ICK1 VHiM65856SP-1: Mic Amp. (M65856SP) (1/2) Pin No. Port Name Input/Output Function MIC SW Input Microphone SW L: MIC OFF, H: MIC ON MCLKCONT — Clock Control. Controls built-in clock generation circuit with external R. VALC — ALC operating voltage setting terminal.
  • Page 52 CD-BK250W/CD-BK2600W/CD-BK270W ICK1 VHiM65856SP-1: Mic Amp. (M65856SP) (2/2) Pin No. Port Name Input/Output Function KEYCONIN Input Monaural input for external KEYCONTROL IC. Input/Output interface terminal for external KEYCONTROL IC. SOURCEOUT Output Monaural input for external KEYCONTROL IC. Input/Output interface terminal for external KEYCONTROL IC.

  • Page 53: Fl Display

    CD-BK250W/CD-BK2600W/CD-BK270W FL DISPLAY FL701 VVKBJ749GNK-1: FL Display B7 B6 B5 B4 B3 B4 B5 B6 B7 (Hiper) (Lower) – 53 –...
  • Page 54 CD-BK250W/CD-BK2600W/CD-BK270W –– MEMO –– – 54 –...

  • Page 55: Parts Guide

    CD-BK250W/CD-BK2600W/CD-BK270W PARTS GUIDE MINI COMPONENT SYSTEM CD-BK250W MODEL CD-BK250W Mini Component System consisting of CD-BK250W (main unit) and CP-BK250 (speaker system). MINI COMPONENT SYSTEM CD-BK2600W MODEL CD-BK2600W Mini Component System consisting of CD-BK2600W (main unit) and CP-BK2600 (speaker system). MINI COMPONENT SYSTEM...
  • Page 56 CD-BK250W/CD-BK2600W/CD-BK270W PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PARTS CODE RANK RANK FILTERS CD-BK250W/CD-BK2600W/CD-BK270W BF301 RFILR0008AWZZ AE Band Pass Filter INTEGRATED CIRCUITS CF303 RFILF0124AFZZ AD FM IF,10.7 MHz CF351 RFILF0003AWZZ AK FM IF VHILC78645E-1 AY CD Servo,LC78645E CF352 RFILA0009AWZZ AE AM IF...
  • Page 57 CD-BK250W/CD-BK2600W/CD-BK270W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AB 100 µF,25V,Electrolytic AB 100 µF,10V,Electrolytic C111,112 VCEAZA1EW107M J C398 VCEAZA1AW107M J AA 0.033 µF,25V AA 0.022 µF,25V C113,114 VCTYPA1EX333K C399 VCTYMN1EF223Z C115,116 VCKYMN1HB561K J AA 560 pF,50V C561...
  • Page 58 CD-BK250W/CD-BK2600W/CD-BK270W PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PARTS CODE RANK RANK 220 µF,10V,Electrolytic CK17 VCEAEA1AW227M J R145 VRD-ST2CD4R7J AA 4.7 ohms,1/6W AA 0.022 µF,25V CK19 VCTYBT1EF223Z R146,147 VRD-MN2BD103J AA 10 kohm,1/8W AC 0.22 µF,50V,Thin Film CK20 VCFYHA1HA224J R148 VRD-MN2BD472J AA 4.7 kohms,1/8W AB 0.068 µF,50V,Polyester...
  • Page 59 CD-BK250W/CD-BK2600W/CD-BK270W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R708~712 VRD-ST2CD102J AA 1 kohm,1/6W RD12 VRD-MN2BD104J AA 100 kohm,1/8W R713~717 VRD-MN2BD102J AA 1 kohm,1/8W RD13 VRD-MN2BD681J AA 680 ohms,1/8W R718~721 VRD-ST2CD102J AA 1 kohm,1/6W RD14 VRD-MN2BD821J AA 820 ohms,1/8W...
  • Page 60 92LHPC1LXASY BD Pickup Unit Ass’y GCOVA1348AWSA J AH Cover,CD Tray 306- 1 ———— — Pickup Unit GITAR0736AWSA Rear Panel [For CD-BK250W] (Not Replacement Item) GITAR0737AWSA Rear Panel [For CD-BK2600W] 306- 2 NGERR0043AFZZ AC Gear,Rack GITAR0784AWSA Rear Panel [For CD-BK270W] 306- 3...

  • Page 61: Remote Control

    1 222 QACCE0010AW00 J AK AC Power Supply Cord SPAKC1238AWZZ J Packing Case 1 222 QACCJ0007AW00 AK AC Power Supply Cord [CD-BK250W for Australia/New 1 222 QACCL0005AW00 AN AC Power Supply Cord Zealand] QCNWN1844AWZZ J AC Lug Wire SPAKC1239AWZZ J...
  • Page 62 DESCRIPTION PARTS CODE DESCRIPTION PARTS CODE RANK RANK P.W.B. ASSEMBLY (Not Replacement Item) 1 PWB-A1~3 92LPWB3563MANS J — Main/Power/Transformer (Combined Ass’y) [For CD-BK250W/CD-BK2600W] 1 PWB-A1~3 92LPWB3747MANS J — Main/Power/Transformer (Combined Ass’y) [For CD-BK270W] PWB-B1,2 92LPWB3563DPLS J — Display/Headphones (Combined Ass’y)
  • Page 63 CD-BK250W/CD-BK2600W/CD-BK270W CD-BK250W/CD-BK2600W/CD-BK270W 306-2 306-1 306-3 703x2 305x2 PWB-F Figure 8 CD MECHANISM EXPLODED VIEW – 8 –...
  • Page 64 CD-BK250W/CD-BK2600W/CD-BK270W CD-BK250W/CD-BK2600W/CD-BK270W BELT CONNECTION FF/REW FF/REW ROLLER ROLLER Tape 202-1 ASS'Y ASS'Y Motor 603x2 FLYWHEEL FLYWHEEL ASS'Y ASS'Y MAIN BELT TAPE 1 610x13 TAPE 2 610x2 PWB-A1 610x2 PWB-G2 610x2 CD-BK270W ONLY 202-2 606x12 M901 PWB-B1 605x2 602x3 258-1~258-11 IC902...
  • Page 65 CD-BK250W/CD-BK2600W/CD-BK270W CD-BK250W/CD-BK2600W/CD-BK270W 607x2 607x2 MECHANISM PWB-E 243x4 PWB-C 232x4 Figure 10 CABINET EXPLODED VIEW (2/2) – 10 –...
  • Page 66 CD-BK250W/CD-BK2600W/CD-BK270W CP-BK250/CP-BK2600/CP-BK270 SP3,4 TWEETER C1,2 Capacitor 2.2µF,100V (N.P.) SP1,2 C1,2 WOOFER SP3,4 Capacitor TWEETER 2.2µF,100V Electrolytic (N.P.) SP1,2 WOOFER SP3,4 909x2 908x4 905x2 904x4 SP1,2 906x2 906x2 Figure 11 SPEAKER EXPLODED VIEW (1/2) – 11 –...
  • Page 67 CD-BK250W/CD-BK2600W/CD-BK270W GBOXS0070AWM1 (CD-BK270W ONLY) SP1,2 904 x 6 SP1,2 SP1,2 Figure 12 SPEAKER EXPLODED VIEW (2/2) – 12 –...
  • Page 68 CD-BK250W/CD-BK2600W/CD-BK270W © COPYRIGHT 2001 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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