Sharp CD-BK250W Service Manual
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CD-BK250W/CD-BK2600W/CD-BK270W – 12 – REMOVING AND REINSTALLING THE MAIN PARTS TAPE MECHANISM SECTION Perform steps 1 to 6 and 8 of the disassembly method to remove the tape mechanism. How to remove the record/playback and erase heads (TAPE 2) (See Fig. 12-1) 1. When you remove the screws (A1) x 2 pcs., the recording/ playback head and three-dimensional head of the erasing head
Sharp CD-BK250W, – 5 – CD-BK250W/CD-BK2600W/CD-BK270W CD-BK250W/CD-BK2600W CD-BK270W Rear panel 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 2 1 5 6 7 4 3 8 1. Surround Speaker Terminals 2. FM 75 Ohms Aerial Terminal 3. FM Aerial Earth Terminal 4. AM Loop Aerial Socket 5. Span Selector Switch 6. Video/Auxiliary (Audio Signal) Input Sockets 7. Front Spea
Sharp CD-BK250W, – 13 – CD-BK250W/CD-BK2600W/CD-BK270W How to remove the pickup (See Fig. 13-2) 1. Remove the stop washer (B1) x 1 pc., to remove the gear (B2) x 1 pc. 2. Remove the screws (B3) x 2 pcs., to remove the shaft (B4) x 1 pc. 3. Remove the pickup. Note After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage. Figure 13-2 CD MECHANISM SECTION Perform steps 1, 2, 3, 11,12, 13 and 14 of the
Sharp CD-BK250W, PRICE RANK DESCRIPTION NO. PARTS CODE NO. PARTS CODE PRICE RANK DESCRIPTION CD-BK250W/CD-BK2600W/CD-BK270W CK17 VCEAEA1AW227M J 220 µF,10V,Electrolytic CK19 VCTYBT1EF223Z J AA 0.022 µF,25V CK20 VCFYHA1HA224J J AC 0.22 µF,50V,Thin Film CK21 VCFYDA1HA683J J AB 0.068 µF,50V,Polyester CK22 VCTYPA1CX472K J AA 0.0047 µF,16V CK23 VCKYPA1HB102K J AA 0.001 µF,50V CK24~26 VCEAZA1HW225M J AB 2.2 µF,50V,Electrolytic CK29,30 VCEAZA1HW225M J AB 2.2 µF,50V,Electrolytic CK31 VCFYDA1HA154J J AB 0.15 µF,50V,Polyester CK33~35 VCCSBT1HL470J J AA 47 pF,50V CK41 VCEAZA1CW107M J AC 100 µF,16V,Electrolytic CK42 VCTYBT1EF223Z J AA 0.022 µF,25V CK43,44 VCEAZA1EW476M J AB 47 µF,25V,Electrolytic CK45,46 RC-
CD-BK250W/CD-BK2600W/CD-BK270W – 26 – Figure 26 SCHEMATIC DIAGRAM (7/11) A B C D E F G H 1 23456 • NOTES ON SCHEMATIC DIAGRAM can be found on page 39. M12V P22 P21 P20 P19 P18 P17 P16 P15 P14 P13 P12 P11 P10 F F F 49 48 47 44 43 42 41 40 39 38 37 36 35 34 33 32 P09 P08 P07 P06 P05 P04 P03 P02 P01 G08 G09 G10 G11 31 30 29 28 27 26 25 24 23 16 15 14 13 9 93
Sharp CD-BK250W, CD-BK250W/CD-BK2600W/CD-BK270W – 14 – Figure 14-2 CD ERROR CODE DESCRIPTION Error State Code [Servo System Error] 0001 Cannot detect Pickup-in SW 0002 DSP access error [Error during close operation] 0101 Open/Close SW not functioning (Low → High) 0103 Open/Close SW not functioning (High → Low) [Error during open operation] 0201 Open/Close SW not functioning (Low → High) 0203 Open/Close SW not functioning (High → Low) [Error during skip operation] 0302 Pickup-in SW is not detected 0306 During Disc 1 search, Open/Close SW or Clamp SW or Disc SW do not change to low. 0307 Clamp SW not function (Low → High)
Sharp CD-BK250W, CD-BK250W/CD-BK2600W/CD-BK270W – 24 – Figure 24 SCHEMATIC DIAGRAM (5/11) A B C D E F G H 1 23456 • NOTES ON SCHEMATIC DIAGRAM can be found on page 39. AM BAND COVERAGE fL AM ANT. FM SIGNAL AM SIGNAL 1 1 2 2 3 2 1 9 8 7 6 5 4321 22 21 20 19 1 8 654321 24 23 22 21 3 2 1 VSS AOUT AIN PD DO CL DI CE X IN X OUT REG AM RF IN AM OSC IN FM AFC AM OSC OUT AM MIX OUT FM IF IN 1 3 2 MAIN PWB-A1(3/3) +B +B AM ANTENNA BUFF C301 0.01 CT1 0.01 C340 0.001 C330 15P C331 0.047 C303 10P(CH) BF301 BAND PASS FILTER R372 1K IC302 R365 10K R302 10 C318 100P R316 4.7K R325 47K R309 10K C38
CD-BK250W/CD-BK2600W/CD-BK270W – 48 – 1 VDD VDD Input (+) POWER SUPPLY. 2 P37 -20 dB ATT Output -20 dB ATTENUATOR. 3 P36 NO USE Output GND DSA_STB Input/Output DSA STRUBE 4 P35 T_BIAS Output TAPE RECORD BIAS. 5 P34 T_T1/T2 Output TAPE T1/T2 CHANGE. 6 P33 REC/PLAY Output TAPE REC/PLAY CHANGE. 7 P32 RES OUT Output CD DSP RESET & MPEG MICROCOMPUTER RESET. 8 P31 DRF Input CD RF LEVEL
Sharp CD-BK250W, – 53 – CD-BK250W/CD-BK2600W/CD-BK270W FL701 VVKBJ749GNK-1: FL Display FL DISPLAY S1 9G B1 B2 B3 B4 B5 B6 B7 B7 B6 B5 B4 B3 B2 B1 S5 1G 2G 3G 4G 5G 6G 7G 8G 11G 10G S1 B8 B9 B10 B11 B12 B13 B14 S1S1 S1 S1 S4 S3 S2 col f a bk j h mg c n e r p Dp d B21 B20 B19 B18 B17 B16 B15 B1 B2 B3 B4 B5 B6 B7 11G S1 B1 B2 B3 B4 B5 B6 B7 10G S1 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 9G S1 B1 B2 B3 B4 B5 B6 B7 8G Dp d c n p r e m g b k j h f a S2 S3 S4 S5 7G Dp d c n p r e m g col b k j h f a S2 S3 S4 S5 6G Dp d c n p r e m g b k j h f a S2 S3 S4 S5 5G Dp d c n p r e m g b k j h f a S2 S3 S4 S5
Sharp CD-BK250W, – 41 – CD-BK250W/CD-BK2600W/CD-BK270W Parts code 1. CD optical pickup Lens cleaner disc UDSKA0004AFZZ HOW TO USE CAUTION Cleaning fluid Cleaner disc Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has the mark next to it. Place the CD cleaner disc onto the CD disc tray with the brush side down,then press the play button. You will hear music for about 20 seconds and the CD player will automatically stop. If it continuou
Sharp CD-BK250W, – 19 – CD-BK250W/CD-BK2600W/CD-BK270W Figure 19 BLOCK DIAGRAM (3/3) SW601 SPAN SELECTOR CD-BK270W ONLY Q914 KTC2026 KIA7810AP VOLTAGE REGULATOR Q907 Q908 –VF VF2 VF1 Q901 +B5 +5V SW5V KIA7805AP CONSTANT VOLTAGE REGULATOR IC904 +B4 +B3 +B1 -B1 –B2 +B5 +B3 +B5 - 13 44 +B4 – 16 – Q701-Q703 R L ATT –20 dB +B5 RX701 REMOTE SENSOR – B2 +B4 IC561,IC562 KIA4558P OPE AMP. IC701 IX0427AW (2/2) IC562 IC561 1 07 1 08 D902~D905 D901 RL914 JK701 HEADPHONES M901 FAN MOTOR M Q906 Q709 Q902 Q903 Q905 Q904 Q601 Q602 IC903 IC902 IC901 STK4029S POWER AMP. A+10V M12 F903 T2A L 250V F904 T2A L 250V F902 T4A L 250V F901 T4A L
Sharp CD-BK250W, – 43 – CD-BK250W/CD-BK2600W/CD-BK270W T T FDO SPDO Stopped CH1=200 mV DC 10:1 CH2=500 mV DC 10:1 500 ms/div 1999/04/07 09:51:15 (500 ms/div) NORM:20 kS/s 2 1 =Record Length= Smoothing : ON CH1 : 0.000 V CH2 : 0.000 V Main : 100 K Zoom : 2 K Mode : NORMAL Type : EDGE CH2 Delay : 2.924 ms Hold off : 0.2 µs CH3 : 0.00 V CH4 : 0.00 V BW : FULL =Trigger= =Filter= =Offset= T T TE DRF Stopped CH1=10 V DC 10:1 CH2=1 V DC 10:1 100 ms/div (100 ms/div) NORM:100 kS/s 2 1 =Record Lengt
Sharp CD-BK250W, – 7 – CD-BK250W/CD-BK2600W/CD-BK270W OPERATION MANUAL Setting the Clock In this example, the clock is set for the 24-hour (0:00) display. Note: The "CLOCK" or time will flash at the push of the CLOCK button when the AC power supply is restored after a power failure or unplugging the unit. Readjust the clock as follows. To readjust the clock: Perform "Setting the Clock" from the beginning. If the time display is flashing, step 3 (for selecting the 24-hour or 12-hour display) will be ski
Sharp CD-BK250W, CD-BK250W/CD-BK2600W/CD-BK270W – 16 – 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 03: TAPE Mechanism Error 'ER-TA**' 00: Tape Mechanism Error 01: Initial Error 02: 03: CD/VCD Pickup Mechanism Error 'ER-CD**' 00: Pickup Mechanism Error 01: PU-IN SW Detection NG 02: 03: 04: CD Changer Mechanism Error 'ER-CD**' 10: Changer Error 11: Initial Error 12: 13: Tray Error 'ET-CD**' 2
Sharp CD-BK250W, CD-BK250W/CD-BK2600W/CD-BK270W – 40 – T T DATA DATACK LRSY Stopped CH1=2 V DC 10:1 CH2=2 V DC 10:1 CH3=2 V DC 10:1 5 µs/div (5 µs/div) NORM:100 kS/s 1 2 3 =Record Length= Smoothing : ON CH1 : 0.00 V CH2 : 0.00 V Main : 5 K Zoom : 100 Mode : AUTO Type : EDGE CH3 Delay : 0.0 ns Hold off : 0.2 µs CH3 : 0.00 V CH4 : 0.00 V BW : FULL =Trigger==Filter= =Offset= CH3 v/DIV 2 V 1999/04/05 20:50:17
Sharp CD-BK250W, CD-BK250W/CD-BK2600W/CD-BK270W A B C D E F G H 1 23456 902 904x4 903 906x2 901 907 908x4 906x2 909x2 905x2 SP3,4 SP1,2 C1,2 Capacitor 2.2µF,100V (N.P.) C1,2 Capacitor 2.2µF,100V Electrolytic (N.P.) SP3,4 TWEETER SP1,2 WOOFER BK BK RD RD SP1,2 WOOFER SP3,4 TWEETER Figure 11 SPEAKER EXPLODED VIEW (1/2) – 11 – CP-BK250/CP-BK2600/CP-BK270
Sharp CD-BK250W, – 33 – CD-BK250W/CD-BK2600W/CD-BK270W Figure 33 WIRING SIDE OF P.W.BOARD (4/8) 7 8 9 10 11 12 WH WH BK PK WH GR BL BK PK BK WH YL BL BI102 7 1 2 3 4 5 6 1 CNS102 TO TAPE 2 RECORD/ PLAYBACK HEAD P37 12 - E R137 Q107 C134 C131 C119 C133 C127 C150 C125 IC101 C122 R115 R114 Q104 R113 Q102 CNP101 Q105 Q106 Q101 BI102 R112 Q103 C137 R145 C138 Q114 Q111 L103 C141 Q113 C140 C139 Q112 C136 R142 R141 R149 Q109 Q110 C970 BI902 1 10 R988 R981 R986 R982 C904 C921 ZD905 C907 C923 D916 D917 C920 C918 CNP701 BIK1 FFC701 CNS701 P35 12 - A TO DISPLAY PWB C114 BI601 CNS
Sharp CD-BK250W, – 1 – CD-BK250W/CD-BK2600W/CD-BK270W No. S5136CDBK250W CONTENTS Page SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2 VOLTAGE SELECTION ..................................................................................................................................................... 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 2 SPECIFICATIONS ...........................................
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