Sharp AQUOS CD-BA250 Service Manual Download Page 41

Page: 41 / 64

– 41 –

CD-BA250/CD-BA2600

FDO

SPDO

Stopped

CH1=200mV

DC 10:1

CH2=500mV

DC 10:1

500ms/div

1999/04/07 09:51:15

(500ms/div)

NORM:20kS/s

=Record Length=

Smoothing : ON

CH1 : 0.000V
CH2 : 0.000V

Main : 100K
Zoom : 2K

Mode : NORMAL
Type : EDGE CH2
Delay : 2.924ms
Hold off : 0.2

CH3 : 0.00V
CH4 : 0.00V

BW : FULL

=Trigger=

=Filter=

=Offset=

DRF

Stopped

CH1=10V

DC 10:1

CH2=1V

DC 10:1

100ms/div

(100ms/div)

NORM:100kS/s

=Record Length=

Smoothing : ON

CH1 : 0.0V
CH2 : 0.00V

Main : 100K
Zoom : 2K

Mode : NORMAL
Type : EDGE CH1
Delay : 2.924ms
Hold off : 0.2

CH3 : 0.00V
CH4 : 0.00V

BW : FULL

=Trigger=

=Filter=

=Offset=

The tracking servo is not activated.
Check the peripheral circuits at pins 14, 15 and 20 on IC1, and
CNS1A/B.

If the waveform shown in Figure 41-1 appears and soon after
NO DISC appears. ?

(2) Tracking system check

Check the TE waveform at pin 15 on IC1.

A normal jump operation cannot be completed or the beginning of
the track cannot be found.
Check the around pin 20 on IC1.

"Initialization" is possible, but play is not possible. ?

Data cannot be read. Check the VCO-PLL system.

"Initialization" is not possible.

Figure 41-1

Figure 41-2

Press the OPEN/CLOSE switch without inserting a disc, and
then try starting the play operation.

(3) Spin system check

The spin driver circuit is OK.

1. The turntable rotates a little. ? (Waveform drawing

Figure 41-2)

Check around pin 22 on IC1, pins 15 and 16 on IC3, and CNS3A/B.

2. The turntable doesn't rotate.

Yes

Summary of Contents for AQUOS CD-BA250

Page 1: ...LAY 49 REPLACEMENT PARTS LIST EXPLODED VIEW PACKING OF THE SET FOR U S A ONLY In the interests of user safety the set should be restored to its original condition and only parts identical to those specified be used SERVICE MANUAL This document has been published to be used for after sales service only The contents are subject to change without notice SHARP CORPORATION MINI COMPONENT SYSTEM MODEL C...

Page 2: ... BEFORE RETURNING THE AUDIO PRODUCT Fire Shock Hazard Before returning the audio product to the user perform the following safety checks 1 Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the audio product 2 Inspect all protective devices such as insulating materials cabinet terminalboard adjustmentandcomp...

Page 3: ...1 CD Play or Repeat Tape Play Button 22 CD Track Up or Fast Forward Tape 2 Fast Forward Tuner Preset Up Button 23 Tuning and Time Down Button 24 Memory Set Button 25 Tape 2 Record Pause Button 26 CD Track Down or Fast Reverse Tape 2 Rewind Tuner Preset Down Button 17 21 4 5 16 15 14 13 12 11 23 24 25 26 22 18 19 20 6 7 1 2 3 8 9 10 Display 1 Extra Bass Indicator 2 FM Stereo Mode Indicator 3 FM Ste...

Page 4: ...ape 2 Record Pause Button 11 CD Button 12 Tuner Band Button 13 Power On Stand by Button 14 Extra Bass Button 15 CD Stop Button 16 CD Play or Repeat Button 17 CD Track Up or Fast Forward Button 18 CD Random Button 19 Tuner Preset Up Down Buttons 20 Tape 2 Play Button 21 Tape 2 Rewind Button 22 Tape 2 Fast Forward Button 23 Video Auxiliary Button 24 Tape 1 2 Button 25 Volume Up or Down Buttons 1 2 1...

Page 5: ... appear 0 00 23 59 Note that this can only be set when the unit is first installed or it has been reset Refer to step 3 under If trouble occurs 4 Press the TUNING TIME or button to adjust the hour and then press the MEMORY SET button Press the TUNING TIME or button once to advance the time by 1 hour Holdit down to advance continuously When the 12 hour display is selected AM will change automatical...

Page 6: ...C power cord of the unit plugged in Is the battery polarity respected Are the batteries dead Is the distance or angle incorrect Does the remote control sensor receive strong light Sudden temperature changes storage or operation in an extremely humid environment may cause con densation inside the cabinet CD pickup tape heads etc or on the transmitter on the remote con trol Condensation can cause th...

Page 7: ...he Insert the batteries Replace the cover battery cover as shown Extraiga la cubierta Inserte las pilas Vuelva a colocar la de las pilas como se muestra cubierta 1 2 System Connections Conexiones del sistema 3 3 AM loop antenna Antena de cuadro de AM FM antenna Antena de FM Red Rojo Black Negro Right speaker Altavoz derecho Left speaker Altavoz izquierdo AC outlet AC 120 V 60 Hz A un tomacorriente...

Page 8: ...1 or TAPE 2 Audición de una cinta de cassette TAPE 1 o TAPE 2 Listening to the Radio Audición de la radio FM stereo mode indicator Indicador del modo de FM en estéreo FM stereo receiving indicator Indicador de recepción de FM en estéreo 1 Open the cassette door by pushing the area marked PUSH EJECT Abra la puerta del cassette pulsando la parte marcada PUSH EJECT 2 Load a cassette into the TAPE 1 o...

Page 9: ...f the unit 2 Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit 3 Take off nylon bands or wire holders where they need to be removed when disassembling the unit After servicing the unit be sure to rearrange the leads where they were before disassembling 4 Take sufficient care on static electricity of integrated circuits and other circuits when serv...

Page 10: ...Turntable Slide Chassis K2 x1 CD Player Unit K1 x2 1 3 2 L1 x3 L1 x3 Main PWB Headphones PWB Power transformer PWB Power PWB E2 x2 E4 x1 E3 x1 E2 x1 F1 x2 ø3x8mm E1 x2 ø3x10mm G2 x1 G1 x11 ø3x10mm H1 x5 ø3x10mm Display PWB Headphones PWB Open Cassette Holder Tape Mechanism J1 x1 ø3x10mm M3 x2 M2 x2 M3 x2 CD Video PWB Slide Chassis M1 x1 ø3x8mm ...

Page 11: ...r 1 Screw C1 x2 11 3 STEP REMOVAL PROCEDURE FIGURE Figure 11 2 Figure 11 1 CP BA250 CP BA2600 Figure 11 3 N2 x3 N1 x1 P1 x5 N1 x1 Loading Motor PWB CD Mechanism A1 x1 Screwdriver Driver should be pried away from Speaker Box Front Panel Speaker Boox B1 x4 ø4x12mm Woofer C1 x2 ø3x10mm Tweeter ...

Page 12: ...oller C1 x 1 pc in the direction of the arrow B Note When installing the pinch roller pay attention to the spring mounting position How to remove the belt TAPE 2 See Fig 12 4 1 Remove the main belt D1 x 1 pc from the motor side 2 Remove the FF REW belt D2 x 1 pc How to remove the belt TAPE 1 See Fig 12 4 1 Remove the main belt E1 x 1 pc from the motor side 2 Remove the FF REW belt E2 x 1 pc How to...

Page 13: ...oks A1 x 5 pcs to remove the loading motor 2 Remove the drive belt A2 x 1pc Figure 13 1 ADJUSTMENT MECHANISM SECTION Driving Force Check Torque Meter Specified Value Play TW 2111 Tape 1 Over 80 g Tape 2 Over 80 g Torque Check Torque Meter Tape 2 Play TW 2111 30 to 80 g cm 30 to 80 g cm Fast forward TW 2231 70 to 180 g cm Rewind TW 2231 70 to 180 g cm Specified Value Tape 1 Specified Value Adjustin...

Page 14: ...r Clamp SW or Disc SW do not change to low 0307 Clamp SW not function Low High 0308 Clamp SW not function High Low Items adjusted automatically 1 Offset adjustment The offset voltage between the head amplifier output and the VREF reference voltage is compensated inside the IC Focus offset adjustment Tracking offset adjustment 2 Tracking balance adjustment waveform drawing Fig 14 2 EFBL 3 Gain adju...

Page 15: ...put Tracking OFF play at that specific point MEMORY key input Tracking ON play from that specific point STOP key input STOP IL isn t done VOL Last memory BAL CENTER P GEQ FLAT X BASS OFF To cancel Power OFF Sliding the PICKUP with button must only be in STOP mode MEMORY key input Adjustment result automatically will display as below for each 2 sec a FOFF_XX b TOFF_XX c TBAL_XX d TGAN_XX f FGAN_XX ...

Page 16: ...rrent 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 20 Tray Error 21 22 23 Focus Not Match NO DISC IL Time Over NOT READ TUN PLL Unlock ER TU 00 TUN Error 01...

Page 17: ... Q3 XVDD RVDD LVDD ADAVDD RFVDD XL1 33 8688MHz OC DISC NO CLAMP SW CD RES CLK DI DO CE DRF WRQ 5V 5V DGND L CH AGND VCC3 VCC2 VCC4 VCC1 IC2 M63001FP FOCUS TRACKING SPIN SLED DRIVER XIN XOUT RES WRQ DO DI CLK CE TIN2 TIN1 FIN2 FIN1 TD0 FD0 SPDO SLDO CONT5 CONT2 CONT3 CONT4 RCHO RVSS LVSS LCHO 80 42 79 75 20 5 40 18 24 23 14 8 21 22 29 35 41 47 46 7 10 9 8 7 15 1 2 17 25 42 41 83 39 4 7 6 5 16 82 26...

Page 18: ... BIAS Q111 L103 Q105 Q106 REC PB HEAD TAPE 2 PB HEAD TAPE 1 R CH L CH R CH L CH IC601 LC75341 AUDIO PROCESSOR B4 R L REC R L L NF R NF ALC REF R REC L REC POPREDUCE R NF L NF SWITCHING L T2 R T2 R T1 L T1 R L FM AM MPXIN STEREO AM RF IN AM OSC IN FM Q360 VT OSC X352 4 5MHZ AM BAND COVERAGE AM TRACKING T303 T306 Q302 X351 456kHz MO ST VCO FM DET FM B GND AM IF CF351 IC303 LA1832S FM IF DET FM MPX A...

Page 19: ...C903 IC902 IC901 STK4029S POWER AMP A 10V M12 F903 2A 125V F904 2A 125V F902 4A 125V F901 4A 125V Vcc Vcc R OUT L OUT CLK SO901 SPEAKER TERMINAL AC POWER SUPPLY CORD 31 REC PLAY VLOAD RESET B5 B5 B5 B5 VDD VDD VDD SP DET CE DI DO XL700 4 194304MHz BIAS T1 T2 AVDD SW701 SW703 SW712 SW718 SW720 SW727 SW729 SW732 KEY TO CD SECTION IC701 IX0399AW 1 2 SYSTEM MICROCOMPUTER FL701 FL DISPLAY 23 89 81 32 8...

Page 20: ...P SP VREF VCC PICKUP UNIT TR TR TR TR FO FO FO PD VR LD F C B A E VCC VREF SLIDE SPIN PU IN 1 2 3 4 5 6 1 2 3 4 5 6 5 3 6 2 7 1 4 5 3 6 2 7 1 4 5 3 6 2 7 1 4 5 3 6 2 7 1 4 4 1 3 6 5 2 4 1 3 6 5 2 M M 4 8 5 2 1 7 3 6 4 8 5 2 1 7 3 6 4 8 5 2 1 7 3 6 4 8 5 2 1 7 3 6 2 CNP1 CNS1A CNS1B R6 33K R5 12K R4 12K R3 33K R1 12K R2 12K C1 47 25 C2 0 01 CNP2 CNS2A CNS2B C38 0 01 C39 100 10 R44 12K C41 100 10 CN...

Page 21: ...SLDO SPDO FDO TDO REF1 VREF ADAVSS ADAVDD JITTC RFMON TE TEC FE TIN2 F TIN1 E FIN2 B FIN1 A RSVSS RFVDD RF EFMIN SLCIST SLCO 5V DGND L CH AGND R CH 6 3 5 4 2 6 1 3 5 4 2 6 1 3 5 4 2 6 1 9 8 7 6 2 4 5 3 1 5 4 3 2 1 3 1 2 CNS8 CNS601 CD LOADING MOTOR PWB E 2 R49 1 D2 DS1SS133 D1 DS1SS133 Q3 KRC102 M R45 470 R46 470 R20 10K R13 1K R14 1K R15 1K R16 1K R18 1K R17 1K P C11 0 22 50 C10 10 50 2 C5 47 ML ...

Page 22: ...0P R112 15K R116 56 C112 100 25 C114 0 033 R122 33K C116 560P C118 47 25 R124 5 6K R120 3 9K R118 100K C120 0 0022 R126 3 9K C121 0 022 C122 3 3 50 R128 6 8K C124 270P R132 100 C126 22 50 C132 47 25 C130 0 0033 C128 0 022 R130 1 5K R134 10K C108 330P R114 1K C110 330P C107 330P R113 1K C109 330P IC101 AN7345K PLAYBACK AND RECORD PLAYBACK AMP C103 180P Q103 2SCC1845 F R105 3 3K R103 2 2K Q101 2SCC1...

Page 23: ...GNAL FM SIGNAL B B B B B B B B B B B B B B B R126 3 9K R128 6 8K C124 270P R132 100 C126 22 50 C132 47 25 C130 0 0033 C128 0 022 R130 1 5K R134 10K IC101 AN7345K K RECORD AMP 10 50 C601 75341 ROCESSOR C623 1 50 C625 0 0056 R609 1 2K C621 1 50 C619 1 50 C617 1 50 C615 4 7 50 C613 1 50 C605 0 1 C611 0 0027 R607 3 9K C607 0 1 C603 22 50 C609 1 50 R605 10K R623 220K R622 220K R136 220K Q108 KTC3199 GR...

Page 24: ...K C948 0 022 R954 1 5K Q902 KTC3199 GR D912 DS1SS133 C946 10 50 C945 10 50 C941 100 50 R945 0 22 2W R943 100 R935 1K R941 1K C937 15P C939 150P R939 56K R937 820 C935 4 7 50 R947 0 22 2W Q904 KTC3199 GR R956 56K R955 56K C952 0 047 ML R958 4 7 C953 0 047 ML R959 4 7 R949 0 1 1W C947 0 022 Q903 KTC3199 GR R951 1K R953 1 5K Q905 KTC3199 GR D911 DS1SS133 R931 100K C931 0 22 50 R933 56K R975 8 2 C915 ...

Page 25: ... 0 1 ML D905 DS1N4004S D903 DS1N4004S D902 DS1N4004S D904 DS1N4004S R984 47K F901 4A 125V F902 4A 125V C902 0 1 ML F904 2A 125V F903 2A 125V C908 100 50 D907 DS1N4004S C909 100 50 D906 DS1N4004S D908 DS1N4004S R905 47K C911 47 50 R904 2 2K Q901 KTA1274 Y R906 10 C910 220 50 ZD901 DZ330BSD ZD903 DZ6 2BSA R977 47 R978 47 R907 12K C913 100 35 C912 47 50 C905 0 1 ML C906 0 1 ML CNS971 R971 68K D915 DS...

Page 26: ... B B B B B B B B B 7 6 5 4 8 2 1 3 TAPE MOTOR M PLAY CASSETTE SOLENOID SOLENOID PH TAPE MECHANISM PWB D CNS702 D703 DS1SS133 R770 10K R772 10K C706 47 50 R726 2 2K R727 2 2K R728 2 2K R729 2 2K R732 1K R733 1K R734 1K LED701 R761 1K IC IX03 SY MICROC R572 100K C572 0 022 ZD561 DZ6 2BSB C573 0 022 C569 2 2 50 R578 100K R731 10K R778 10K R779 10K R777 10K Q708 KTA1271 Y Q707 KTA1271 Y Q706 KTA1273 Y...

Page 27: ... MAIN PWB P23 12 D FFC701 B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B R725 1K CNS701 RD07 3 9K RD06 2 7K RD05 2 2K RD04 1 5K RD03 1K RD30 5 6K RD16 3 9K SW717 VOLUME UP SW718 VOLUME DOWN RD17 180K D711 DS1SS133 R774 10K R773 1K D713 DS1SS133 C714 3 3 50 R782 100K D715 DS1SS133 Q709 KRC102 M C702 220 10 C703 0 022 C701 1 50 R781 47K C715 0 01 R765 4 7K R718 1K R719 1K R7...

Page 28: ...T302 FM IF C305 4 7P CH C314 0 0047 C369 27P C374 0 015 ZD351 DZ5 1BSB C396 100 10 C395 0 022 R313 33K R381 10K X352 4 5MHz R363 6 8K C363 0 022 R391 270 Q360 KTA1266 GR R385 5 6K R392 270 C372 1 50 R364 6 8K T351 AM IF C317 0 001 R361 10K C355 22P R388 3 9K R311 100K L312 FM RF C332 0 022 C315 0 0047 C304 0 01 R314 22 C324 3 9P UJ D305 DS1SS133 C371 1 50 R362 10K R378 1K R327 33 R386 22K C388 0 0...

Page 29: ...01 R984 R983 D903 D904 D905 D902 C906 C905 C908 ZD902 D906 C901 C909 C911 R904 D908 F904 2A 125V F903 2A 125V F901 4A 125V F902 4A 125V R978 R977 D907 ZD903 ZD901 C913 R905 R907 R906 C912 Q901 C910 T F PT801 POWER TRANSFORMER AC POWER SUPPLY CORD AC120V 60Hz POWER PWB A2 POWER TRANSFORMER PWB A3 1 B C E 2 3 4 5 6 7 8 9 10 ...

Page 30: ...915 R967 C963 L920 L921 VD301 IC902 CNP971 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 1 2 JK690 VIDEO AUX IN R CH L CH AM LOOP ANTENNA FM ANTENNA 1 2 3 B C E B C E E B C E 1 2 3 3 2 1 C B B B B C E C E 1 1 2 3 2 3 C E B C E E C B E C B B C E C395 R395 R606 C388 C356 R355 C355 R363...

Page 31: ...9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 3 2 1 7 1 2 3 4 5 6 GY WH GY WH GY WH GY WH GY RD 10 9 8 7 6 5 4 3 2 1 CNP902 TO POWER PWB P29 9 H GY WH GY WH GY RD 1 2 3 4 5 6 GY WH GY WH GY RD TO CD SERVO PWB P34 5 A FROM TAPE2 RECORD PLAYBACK ERASE HEAD FROM TAPE1 PLAYBACK HEAD P35 10 F P35 11 F BR COLOR TABLE RD R OR YL GR BL VL GY WH W BK PK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE...

Page 32: ...3 OPEN CLOSE R563 D714 D713 C569 Q706 SW715 X BASS Q708 D710 SW712 DISC SKIP C712 CNS702 FFC702 P35 8 A 1 E C B E C B E C B 3 5 7 2 4 6 8 8 9 8 7 6 5 4 3 2 1 1 DISPLAY PWB B1 TO TAPE MECHANISM PWB BR COLOR TABLE RD R OR YL GR BL VL GY WH W BK PK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK WH GY WH GY WH GY WH GY RD RD R778 R777 RD30 RD07 RD06 R569 R781 R782 R783 C715 R751 R750 ...

Page 33: ...06 C707 D703 XL700 R712 R711 R710 R709 SW732 TUNER SW721 TAPE RD03 RD28 RD19 SW726 PLAY SW725 FAST FORWARD SW729 REC PAUSE LED701 1 3 5 7 9 11 13 15 17 19 21 23 2 4 6 8 10 12 14 16 18 20 22 24 1 24 R760 R756 R759 R758 R774 R732 RD13 RD02 RD25 RD01 R767 R766 R768 RD18 R731 R713 R716 R761 R733 R717 R752 C703 R701 IC701 100 81 80 95 90 85 75 70 65 60 55 51 50 45 40 35 31 30 1 25 20 15 10 5 R705 C704 ...

Page 34: ...5 4 3 2 1 5 4 2 1 6 9 10 11 12 7 8 3 CNP1 C40 R44 C41 C39 R49 R5 R2 R4 CNP3 R1 R6 R3 C9 CNP4 C12 C10 C11 C16 D1 D2 Q3 C14 C23 R18 R20 R30 R19 C48 C18 Q2 ZD2 L1 C24 R22 CNP7 ZD1 XL1 R32 R33 R31 R28 R29 R34 CNP8 R35 C35 C6 R36 C36 R37 C37 R38 C50 C3 R10 R9 C49 C5 Q1 R7 C1 CNP2 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 CNS601 P31 8 A FROM MAIN PWB CNS8 P32 1 B FROM DISPLAY PWB CD SERVO PWB C M1 SPINDLE MOTOR 1 7...

Page 35: ... BL VL GY WH W BK PK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK CNS4 TAPE MOTOR 1 1 2 3 2 4 5 6 7 8 1 8 CNS703 SOLENOID PH SW SW SW SOLENOID TAPE MECHANISM PWB D TAPE MECHANISM ASSEMBLY P32 4 G TO DISPLAY PWB CNP101 P31 11 E TO MAIN PWB P31 11 D TO MAIN PWB CNP102 TAPE 1 PLAYBACK HEAD TAPE 2 ERASE HEAD RECORD PLAYBACK HEAD FFC702 BL WH YL BK PK WH BK BK BK PK WH WH WH PK BK 7 ...

Page 36: ...92 91 1 7V 1 7V 1 8V 2 1V 2 1V 2 1V 2 0V 0V 0V 0V 0V 0V 0V 0V 2 1V 2 1V 1 6V 4 9V 3 0V 1 6V 0V 0V 4 9V 4 9V 1 8V 2 1V 2 1V 0V 0V 0V 0V 0V 0V 0V 0V 4 2V 0V 2 1V 2 1V 4 9V 3 7V 3 7V 9 8 7 6 5 4 3 2 1 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 40 39 38 42 41 37 36 35 34 33 32 31 PIN NO VOLTAGE IC2 0V 0V 0V 5 03V 5 00V 5 01V 5 01V 5 03V 5 01V 5 01V 5 01V 5 01V 5 01V 5 01V 5 01V 5 0...

Page 37: ...ns pico farad and the unit of the capacitor without such a symbol is microfarad As to electrolytic capacitor the expression capacitance withstand voltage is used CH TH RH UJ Temperature compensation ML Mylar type P P Polypropylene type Schematic diagram and Wiring Side of P W Board for this model are subject to change for improvement without prior notice REF NO DESCRIPTION POSITION POSITION SW718 ...

Page 38: ... 1999 04 07 09 51 15 500ms div NORM 20kS s 2 1 Record Length Smoothing ON CH1 0 000V CH2 0 000V Main 100K Zoom 2K Mode NORMAL Type EDGE CH2 Delay 2 924ms Hold off 0 2µs CH3 0 00V CH4 0 00V BW FULL Trigger Filter Offset 1 IC1 21 6 IC1 22 T T TE DRF Stopped CH1 10V DC 10 1 CH2 1V DC 10 1 100ms div 100ms div NORM 100kS s 2 1 Record Length Smoothing ON CH1 0 0V CH2 0 00V Main 100K Zoom 2K Mode NORMAL ...

Page 39: ...c UDSKA0004AFZZ 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 Remove the cabinet and follow the trouble shooting instruction...

Page 40: ...ed Waveform drawing Figure 40 2 Pins 7 12 79 and 80 on IC1 Check the laser diode driver Q1 peripheral circuit When a disc is loaded start playback operation 2 Does DRF change from L to H Is the disc rotating 3 Is the HF waveform normal Waveform drawing Figure 40 3 Check the spin system If the disc is spinning and a HF waveform is generated DRF will go H Figure 40 1 Check the laser diode driver Q1 ...

Page 41: ... Check the peripheral circuits at pins 14 15 and 20 on IC1 and CNS1A B If the waveform shown in Figure 41 1 appears and soon after NO DISC appears 2 Tracking system check Check the TE waveform at pin 15 on IC1 A normal jump operation cannot be completed or the beginning of the track cannot be found Check the around pin 20 on IC1 Initialization is possible but play is not possible Data cannot be re...

Page 42: ... CH3 0 00V CH4 0 00V BW FULL Trigger Filter Offset CH1 v DIV 500mV 1999 04 05 17 33 17 Is pin 52 C2F on IC1 L Yes No The HF waveform is normal and the time is displayed normally but no sound is produced Or the sound has dropouts 5 Others There are too many error flags on a damaged disc which makes error correction impossible Check again using a known good disc 1 When playing at normal speed Check ...

Page 43: ...ral purpose I O terminal 5 27 SBCK CONT6 Input Output Input Mode General purpose I O terminal 6 or Subcode reading clock input terminal 28 SBCK FG Input Subcode reading clock input terminal FG signal input terminal external emphasis setting terminal Terminal functions are set by commands When not used connect to 0V 29 DEFECT Output L Defect terminal 30 V P Output H Auto switching monitor output te...

Page 44: ...t must be set LOW after first applied power on 67 DRF Output L Focus detection output port 68 VDD5 Input Power supply for Microprocessor 69 VSS GND for digital circuit Must be connected to 0V 70 CONT3 Input Output Input General purpose port 1 71 CONT2 Input Output Input General purpose port 2 72 CONT1 Input Output Input General purpose port 3 73 PDO1 Output Internal VCO control phase comparator ou...

Page 45: ...DD RCH0 RVSS LVSS LCH0 LVDD LC78645E MIX LPF LPF LPF TBAL TBAL RAM LEVEL SET AGC EQ SW PH BH MONI CONT A D SERVO PROCESSOR TRACK JUMP AUTO ADJUST JITTER DETECT 1bit DAC 8FS DIGITAL FILTER GENERAL PURPOSE PORTS COMMAND INTERFACE CLOCK GENERATOR CLV CAV CONTROL PLL VCEC SLICE LEVEL CONTROL APC S H D A SW DRF RUPTURE DEFECT FRAME SYNC DETECT PROTECT INSERT EFN DECODE VDD SUBCODE DECODE CRC MONITOR SI...

Page 46: ...utput DSA ACR 28 ANI5 SPEANA2 Input SPEANA DATA INPUT 16 kHz 29 ANI4 SPEANA1 Input SPEANA DATA INPUT 1 kHz 30 ANI3 SPEANA0 Input SPEANA DATA INPUT 63 kHz 31 33 ANI2 ANI0 KEY 2 KEY 0 Input KEY INPUT 34 AVDD AVDD Input ANALOG VDD 35 AVREF AVREF Input ANALOG REF VOLTAGE 36 INTP3 P IN Input POWER FAILURE DETECT 37 P02 JOG 1 Input JOG VOLUME INPUT 1 38 P01 JOG 0 Input JOG VOLUME INPUT 0 39 INTP0 REMOCO...

Page 47: ...ND RDS RDCL ESS_DI Output RDS CLOCK DSA DATA OUTPUT 66 FIP33 NO USE Input GND RDS READY ESS_DO Input RDS READY DSA DATA INPUT 67 P103 DIST3 Input DESTINATION INPUT FIP32 P22 Output FL DISPLAY DRIVER 68 P102 DIST2 Input DESTINATION INPUT FIP31 P21 Output FL DISPLAY DRIVER 69 P101 DIST1 Input DESTINATION INPUT FIP30 P20 Output FL DISPLAY DRIVER 70 P100 DIST0 Input DESTINATION INPUT FIP29 P19 Output ...

Page 48: ...RVref CONTROL CIRCUIT CONTROL CIRCUIT CONTROL CIRCUIT LOUT LBASS 0 1uF LIN LSEL0 L4 L3 L2 L1 R1 R2 R3 R4 RSEL0 R1N RTRE LTRE RBASS 0 1uF ROUT Yref VDD CL DI CE YSS CCB INTERFACE CD Tuner Tape Video 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 LC75341 DI CE VSS LOUT LBASS LTRE LIN LSEL0 L4 L3 L2 L1 CL VDD VREF ROUT RBASS RTRB RIN RSEL0 R4 R3 R2 R1 ...

Page 49: ... 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 4G Dp d c n p r e m g b k j h f a S2 S3 S4 S5 3G Dp d c n p r e m g b k j h f a S2 S3 S4 S5 2G Dp d c n p r e m g b k j h f a S2 S3 S...

Page 50: ...CD BA250 CD BA2600 50 MEMO ...

Page 51: ...ead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the electrolytic capacitors error is 20 Resistors VRD Carbon film type VRS Carbon film type VRN Metal film type VR MF Cylindrical type without lead wi...

Page 52: ...ner DZ130BSB ZD905 VHEDZ2R4BSB 1 J AB Zener 2 4V DZ2 4BSB FILTERS BF301 RFILR0008AWZZ J AE Band Pass Filter CF303 RFILF0124AFZZ J AD FM IF 10 7 MHz CF351 RFILF0003AWZZ J AK FM IF CF352 RFILA0009AWZZ J AE AM IF TRANSFORMERS 1 PT801 RTRNP0350AWZZ J BE Power T301 RCILB0065AWZZ J AC FM OSC T302 RCILI0017AWZZ J AB FM IF T303 RCILA0052AWZZ J AE AM Tracking T306 RCILB0067AWZZ J AD AM OSC T351 RCILI0019AW...

Page 53: ...1HW225M J AB 2 2 µF 50V Electrolytic C567 568 VCTYMN1CX682K J AA 0 0068 µF 16V C569 VCEAZA1HW225M J AB 2 2 µF 50V Electrolytic C570 572 VCTYMN1EF223Z J AA 0 022 µF 25V C573 VCKZPA1HF223Z J AA 0 022 µF 50V C601 VCEAZA1CW227M J AC 220 µF 16V Electrolytic C603 VCEAZA1HW226M J AB 22 µF 50V Electrolytic C605 606 VCFYDA1HA154J J AB 0 15 µF 50V Thin Film C607 608 VCFYHA1HA104J J AB 0 1 µF 50V Thin Film C...

Page 54: ...6 kohms 1 8W R386 VRD ST2CD223J J AA 22 kohms 1 6W R387 VRD ST2CD562J J AA 5 6 kohms 1 6W R388 VRD MN2BD392J J AA 3 9 kohms 1 8W R391 392 VRD ST2EE271J J AA 270 ohms 1 4W R393 VRD MN2BD102J J AA 1 kohm 1 8W R395 VRD MN2BD473J J AA 47 kohms 1 8W R561 VRD MN2BD103J J AA 10 kohm 1 8W R562 VRD MN2BD824J J AA 820 kohms 1 8W R563 VRD ST2EE271J J AA 270 ohms 1 4W R565 VRD MN2BD333J J AA 33 kohms 1 8W R56...

Page 55: ...1874AWZZ J AG Flat Cable 24Pin FFC702 QCNWN1838AWZZ J AD Flat Cable 8Pin FL701 VVKBJ11LM02T1 J BC FL Display FW981 QCNWN1836AWZZ J AD Flat Wire 5Pin JK690 QSOCJ0219AWZZ J AD Jack Video AUX In JK701 QJAKM0010AWZZ J AF Jack Headphones LG1 QLUGP0001AWZZ J AC Lug M1 92LMTR2790CASY J BB Motor with Chassis Spindle M2 92LMTR1854BASY J AP Motor with Gear Sled M3 92LMEN7E6Y J AR Motor with Worm Pulley T T ...

Page 56: ...PT0304303 J AB Lever Stop 234 92LPT0304304 J AB Stopper 235 92LPT0304305 J AE Lever Lock 236 92LPT0304306 J AG Stabilizer 237 92LPT0304307 J AC Support Cam 238 92LPT0304308 J AB Lock Gear Pin 239 92LPT0304309 J AB Cap Pulley Stopper 240 92LPT0305413 J AG Cam Gear Lower 241 92LPT0309506 J AD Gear Turntable Drive 242 92LPT0309507 J AD Gear Open Close Drive 243 92LPT0309508 J AD Gear Planet 244 92LPT...

Page 57: ...CD Pickup Lens Cleaner SPEAKER BOX PARTS 901 GBOXS6002AWSA J AX Speaker Box Ass y 902 CWAKP1045AWSA J AN Net Frame Ass y 903 HPNLS1020AWSA J AW Front Panel 904 LHLDZ8001AWSA J AD Catching Holder 906 PCUSG0022AWZZ J AB Foot Cushion 907 TSPC 0820AWZZ J Label Specifications 908 XJBSD40P12000 J AA Screw ø4 12mm 909 XJBSD30P10000 J AA Screw ø3 10mm SP1 2 RSPA10007AW6W J AX Woofer SP3 4 RSPA00008AW6T J ...

Page 58: ...CD BA250 CD BA2600 A B C D E F G H 1 2 3 4 5 6 Figure 7 CD MECHANISM EXPLODED VIEW 7 CD BA250 CD BA2600 306 1 701 304 701 302 301 702 303 M1 703x2 305x2 SW4 M2 305 PWB F 306 2 306 3 306 704 ...

Page 59: ...5 201 8 201 12 201 4 201 6 201 7 201 5 201 2 201 17 219x2 201 3 201 18 213 230 212 222 203 203 2 203 1 224x8 PWB A3 PT801 PWB A2 610x10 610x2 610 605x2 611x2 610 610 602x3 IC904 IC902 IC903 IC901 603x2 603x1 601x1 608x1 616x2 616x2 613x2 608x1 606x11 223 608x5 201 24 201 21 201 22 201 13 201 19 201 11 201 21 201 23 201 22 201 15 610 610x2 Silicon Grease 603x1 201 20 220 259 Figure 8 CABINET EXPLOD...

Page 60: ... D E F G H 1 2 3 4 5 6 9 CD BA250 CD BA2600 CD MECHANISM 204 250 228 229 236 254 252 232 232 232x4 PWB C 232 225 M3 M3 SW3 PWB E PWB E 607x2 607x2 SW2 SW1 247 253 235 251 256 615 241 246 248 245 244 243x4 242 239 249 255 234 231 240 237 614 227 233 206 238 257 ...

Page 61: ...1 2 Capacitor 2 7µF 100V N P C1 2 Capacitor 2 7µF 100V Electrolytic N P SP3 4 TWEETER SP1 2 WOOFER BK BK RD RD SP1 2 WOOFER SP3 4 TWEETER 901 907 904x4 902 908x4 903 906x2 906x2 909x2 SP3 4 SP1 2 Figure 10 SPEAKER EXPLODED VIEW 10 CP BA250 CP BA2600 ...

Page 62: ...na Quick Guide Operation Manual Remote Control SPAKC1138AWZZ CD BA250 SPAKC1174AWZZ CD BA2600 Packing Case FRONT SIDE OF SPEAKERS BACK SIDE SPAKA0300AWZZ Packing Add LEFT RIGHT Top Bottom A B TOP BACK YELLOW COLOUR RIGHT LEFT A FRONT SPEAKER CP BA250 CP BA2600 B SSAKH0051AWZZ Polyethylene Bag SPAKA0301AWZZ Packing Add SPAKA0301AWZZ Packing Add FRONT Top Top FRONT FRONT FRONT Top RIGHT LEFT SPAKZ07...

Page 63: ...CD BA250 CD BA2600 12 MEMO ...

Page 64: ...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 A0102 DS HA M SC SL LAG SHARP CORPORATION Communication Systems Group Quality Reliability Control Center Higashihiroshima Hiroshima 739 0192 Japan Printed in Japan ...

Search results

Summary of Contents for AQUOS CD-BA250

Reviews:

Related manuals for AQUOS CD-BA250

Brands by name

Popular brands

Sharp AQUOS CD-BA250, Service Manual

Search results

Summary of Contents for AQUOS CD-BA250

Reviews:

Related manuals for AQUOS CD-BA250

Brands by name

Popular brands