Table of Contents
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Illustration: CD-BP1200W
Illustration: CD-BP1250W
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION ..................................................................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
OPERATION MANUAL ...................................................................................................................................................... 6
DISASSEMBLY .................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 11
ADJUSTMENT ................................................................................................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 14
TYPES OF TRANSISTOR AND LED ................................................................................................................................ 14
BLOCK DIAGRAM ........................................................................................................................................................... 15
SCHEMATIC DIAGRAM .................................................................................................................................................. 18
VOLTAGE ........................................................................................................................................................................ 27
WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 28
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 34
TROUBLE SHOOTING .................................................................................................................................................... 35
FUNCTION TABLE OF IC ................................................................................................................................................ 39
FL DISPLAY ..................................................................................................................................................................... 45
REPLACEMENT PARTS LIST/EXPLODED VIEW
SERVICE MANUAL
MODEL
MODEL
CONTENTS
SHARP CORPORATION
- 1 -
MINI COMPONENT SYSTEM
CD-BP1200W
CD-BP1200W Mini Component System consisting of
CD-BP1200W (main unit) and CP-BP1200 (speaker system).
MINI COMPONENT SYSTEM
CD-BP1250W
CD-BP1250W Mini Component System consisting of
CD-BP1250W (main unit), CP-BP1250 (front speaker) and
GBOXS0043AWM1 (surround speaker).
• 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.
CD-BP1200W/1250W
No. S6052CDP1200W
Page
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Table of Contents
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Summary of Contents for Sharp CD-BP1200W
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Page 1: Table Of Contents
SERVICE MANUAL No. S6052CDP1200W MINI COMPONENT SYSTEM CD-BP1200W MODEL CD-BP1200W Mini Component System consisting of CD-BP1200W (main unit) and CP-BP1200 (speaker system). Illustration: CD-BP1200W MINI COMPONENT SYSTEM CD-BP1250W MODEL CD-BP1250W Mini Component System consisting of CD-BP1250W (main unit), CP-BP1250 (front speaker) and GBOXS0043AWM1 (surround speaker). -
Page 2: Safety Precaution For Service Manual
CD-BP1200W/1250W SAFETY PRECAUTION FOR SERVICE MANUAL Precaution to be taken when replacing and servicing the Laser Pickup. The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam. -
Page 3: Specifications
Height; 300 mm (11-13/16") Wow and flutter: 0.3 % (WRMS) Depth; 373 mm (14-11/16") Weight: 5.0 kg (11.0 lbs.) CP-BP1200/1250 Amplifier section (CD-BP1200W) Type: 10 cm (4") full-range speaker MPO; 32 W (16 W + 16 W) Output power: Maximum input 20 W (10 % T.H.D.) -
Page 4: Names Of Parts
CD-BP1200W/1250W NAMES OF PARTS CD-BP1200W/1250W Front panel 1. (CD) Disc Number Indicators 2. Timer Indicator 1 2 3 4 6 7 8 3. Record Indicator 4. Sleep Indicator 5. Extra Bass Indicator 6. (CD/TUNER) Memory Indicator 7. FM Stereo Mode Indicator 8. -
Page 5: Cd-Bp1250W Only 4. Front Speaker Terminals
CD-BP1200W/1250W Rear panel 1. AC Voltage Selector 2. AC Power Input Socket 3. Surround Speaker Terminals (CD-BP1250W Only) 4. Front Speaker Terminals 5. Span Selector Switch 6. FM Aerial Earth Terminal 7. FM 75 Ohms Aerial Terminal 8. AM Loop Aerial Input Socket CP-BP1200/1250 1. -
Page 6: Operation Manual
CD-BP1200W/1250W OPERATION MANUAL PREPARATION FOR USE Connecting the AC power lead AM/FM interval (span) Check the setting of the AC voltage selector located on the The International Telecommunication Union (ITU) has rear panel before plugging the unit into an AC socket. If nec-... - Page 7 CD-BP1200W/1250W – 7 –...
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Page 8: Disassembly
CD-BP1200W/1250W DISASSEMBLY CD-BP1200W/1250W Caution on Disassembly Follow the below-mentioned notes when disassembling Top Cabinet (A1)x2 the unit and reassembling it, to keep it safe and ensure Front Panel ø3x12mm excellent performance: 1. Take cassette tape and compact disc out of the unit. - Page 9 CD-BP1200W/1250W (J2) x1 Clamp Lever Turntable CD Player Unit (Top View) Disc Tray (J1) x2 Cam Gear Rib Figure 9-1 Loading Chassis (E3)x1 (E2)x2 Front Panel Figure 9-4 (E2)x1 (K1) x3 Headphones (E1)x7 ø3x10mm Disc Tray (E4)x1 (E2)x1 (K1) x3...
- Page 10 CD-BP1200W/1250W (M2) x3 Mechanism (M1) x1 (M1) x1 Disc Tray Figure 10-1 CP-BP1200/1250 STEP REMOVAL PROCEDURE FIGURE Speaker 1. Net Frame Ass’y ..(A1) x1 10-2 2. Duct Panel ....(A2) x1 3. Screw ...... (A3) x4 10-3 Speaker Box...
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Page 11: Removing And Reinstalling The Main Parts
CD-BP1200W/1250W REMOVING AND REINSTALLING THE MAIN PARTS TAPE MECHANISM SECTION TAPE 2 Perform steps 1 to 6 and 8 of the disassembly method to Record/Playback Head remove the tape mechanism. How to remove the record/playback and erase heads (Tape 2) (See Fig. 11-1) 1. -
Page 12: Adjustment
CD-BP1200W/1250W CD MECHANISM SECTION Perform steps 1, 2, 3, 9 and 12 of the disassembly method to remove the CD mechanism. How to remove the loading motor T/T Up/Down Motor (See Fig. 12-1) 1. Bend the hooks (A1) x 5 pcs., to remove the T/T Up/Down Disc Tray motor. -
Page 13: Tuner Section
CD-BP1200W/1250W • FM RF TUNER SECTION Signal generator: 400Hz, 22.5 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 14: Notes On Schematic Diagram
CD-BP1200W/1250W NOTES ON SCHEMATIC DIAGRAM • The indicated voltage in each section is the one measured • Resistor: by Digital Multi meter between such a section and the To differentiate the units of resistors, such symbol as K and chassis with no signal given. -
Page 15: Block Diagram
CD-BP1200W/1250W DISC CLAMP NUMBER OPEN/ CLOSE UP/DOWN MOTOR TO MAIN SECTION TO DISPLAY SECTION (TO IC601) 9 10 32 31 30 75 76 45 46 47 48 LC78641E PICKUP IN CONT5 SERVO/SIGNAL CONTROL SLD0 XOUT SPD0 VDD5V 16.9344MHz 5 18 36 44 49 50... - Page 16 CD-BP1200W/1250W FM ANTENNA TERMINAL 10.7mHz SO302 IC301 T302 CF303 CF351 TA7358AP BF301 450kHz FM FRONT END X351 456kHz AM MIX AM IF FM+B MO/ST T301 L312 IC303 LA1832S FM IFDET/ FM/AM FM MPX. /AM IF MPX IN FM/AM AM LOOP...
- Page 17 CD-BP1200W/1250W R. PLAY F. PLAY T2 PLAY SW601 FL701 SPAN SELECTOR FL DISPLAY T1 PLAY MOTOR Q702 TAPE SOLENOID DRIVER Q703 MOTOR Q706 Q705 Q704 LED722 60 5957 5655 54 5352 49 48 4746 44 4342 4140 RX701 SYS. STOP...
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Page 18: Schematic Diagram
CD-BP1200W/1250W CD SERVO PWB-B Vref TIN1 FIN1 0.047 FIN2 TIN2 LA9235M SERVO AMP. 0.47/6.3 2.2/50 FIN1 100P ODRV FIN2 RFSW 120K 6.8K AGCON TIN1 (CH) 0.01 47/10 TIN2 100/10 REF1 0.01 0.0047 10/16 VREF 0.33 ODRV RFEV PH/BH 100K LDON... - Page 19 CD-BP1200W/1250W CD SIGNAL 100P 0.01 100P 100P 100P 100P 100P 100P DEFECT 2.2µH EFMO VDD5V 80 79 78 77 76 75 74 72 71 70 69 68 67 66 65 0.047 PD01 COMMAND GENERAL INTERFACE 1.5M 100/10 PD02 SBCK 2.2/50...
- Page 20 CD-BP1200W/1250W FL701 FL DISPLAY 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 C708 R743 C705 1/50 100/10 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97...
- Page 21 CD-BP1200W/1250W R779 21 22 23 24 25 26 27 28 29 30 31 32 33 3.3(1/2W) Q701 KRC107 M BI702 CD INT -25.4V 4.9V WRQ(DSP) R744 C707 1/50 -25.6V P19 12-F TO CD CD CE SERVO PWB R745 100K CD DO...
- Page 22 CD-BP1200W/1250W C605 0.022 CNS601 R-CH C604 100/25 A_GND P19 12-D L-CH C607 CNP11 CD_GND C606 22/50 10/50 VREF TO CD SERVO C608 10/50 INTERFACE R615 C609 C610 LOUT ROUT 0.1(ML) 0.1(ML) BI601 3.9K C611 0.1(ML) C612 0.1(ML) RBASS LBASS R601...
- Page 23 CD-BP1200W/1250W MAIN PWB-A1(1/3) 2/50 0/50 R616 3.9K (ML) 0027 A_10V TUN_R R618 TUNER 3.3K TUN_L SECTION P26 1-G GND(D_GND) GND(A_GND) CNP701 T_BIAS T_T1/T2 REC/PLAY M_GND M_10V SMUTE P21 11-D CNS701 R143 TO DISPLAY PWB 220K R141 UN_SW 5V 0.7V D_GND...
- Page 24 CD-BP1200W/1250W IC901 LA4282 THERMAL OVER POWER AMP. VOL. PROTECTOR RIPPLE MUTE FILTER CIRCUIT C918 C919 220P 10/50 C905 R907 R905 0.022 R908 C906 R909 R906 47/25 C915 C914 470/25 C909 C908 470/25 0.082 C907 0.082 (ML) C911 C910 100/25 (ML) C913 0.022...
- Page 25 CD-BP1200W/1250W MAIN PWB-A1(2/3) FM SIGNAL HEADPHONES PWB-A3 FW901 L OUT JK901 R916 R917 HEADPHONES R OUT CD-BP1250W ONLY SP_L Ch SP_R Ch SURROUND SPEAKER C961 C960 22/50 22/50 – SP_L Ch_GND SO901 – SP_R Ch_GND SPEAKER TERMINAL SP_L Ch SP_R Ch...
- Page 26 CD-BP1200W/1250W AM LOOP ANTENNA FM SIGNAL SO302 FM ANTENNA AM SIGNAL TERMINAL CNP302 MAIN PWB-A1(3/3) BF301 C314 D305 1SS133 0.0047 C303 C308 10P (CH) 4.7P C304 C315 L312 FM RF C301 0.01 0.0047 0.001 C309 C316 R311 D301 0.001 0.022...
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Page 27: Voltage
CD-BP1200W/1250W VOLTAGE IC101 IC701 IC303 IC901 PIN VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE VOLTAGE NO. VOLTAGE 1.6V 0.7V 4.78V 4.29V 2.12V 1.6V 4.78V 1.6V 5.0V 4.81V 0.55V 16.27V 2.12V 1.6V 2.16V 4.81V 2.11V 4.81V 1.6V 3.3V 4.69V 1.6V... -
Page 28: Wiring Side Of P.w.board
CD-BP1200W/1250W R374 C302 R372 X352 R388 R378 R373 R359 2 3 4 5 7 8 9 C395 C382 R376 R360 IC302 R379 C381 R604 C387 C627 22 21 20 75OHMS C392 C625 C380 L351 R377 R385 Q360 R395 R381 C623... - Page 29 CD-BP1200W/1250W Q101 (230) (229) R607 R608 R145 C109 Q601 1 2 3 R144 B C E C101 L103 C601 C602 Q112 Q102 R102 R618 E C B C141 R601 1 2 3 B C E C108 C142 R103 L104 Q602...
- Page 30 CD-BP1200W/1250W DISPLAY PWB-A2 Q701 3 2 1 RX701 FL701 C702 C719 RD25 SW711 EQUALIZER RD10 /X-BASS/ RD11 DEMO R744 SW712 VOLUME R702 R703 XL701 R704 R708 SW710 OPEN/CLOSE RD07 R718 Q704 Q705 Q706 RD06 RD08 RD26 SW719 RD22 FAST RD21...
- Page 31 CD-BP1200W/1250W TO CD SERVO PWB P32 5-A CNP12 CNS702 1 2 3 4 5 6 7 8 9 10 BI702 C715 LED722 SW701 R791 C705 ON/STAND-BY 81 80 D708 R742 C716 D709 R784 R771 SW703 C714 IC701 C712 R761 1 2 3...
- Page 32 CD-BP1200W/1250W P29 11-C P31 10-A TO MAIN PWB TO DISPLAY PWB CNS601 CNS702 CD SERVO PWB-B 9 10 CNP11 CNP12 E C B ZD61 B C E CNP1 40 41 1 2 3 CNP4 CNP3 CNS3A PICKUP UNIT(306) CNS3B CNS1A...
- Page 33 CD-BP1200W/1250W P30 5-G TAPE MECHANISM TO DISPLAY PWB ASSEMBLY CNS703 FFC13 TAPE MECHANISM PWB-D TAPE MOTOR SOLENOID SOLENOID TAPE 2 TAPE 1 RECORD/PLAYBACK PLAYBACK HEAD HEAD P29 11-E ERASE HEAD TO MAIN PWB CNP901 1 2 3 4 5 6...
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Page 34: Waveforms Of Cd Circuit
CD-BP1200W/1250W WAVEFORMS OF CD CIRCUIT Stopped Stopped 1999/04/05 17:33:17 CH1=500mV CH3=500mV 500ms/div CH1=500mV CH3=1V CH4=1V 500ms/div DC 10:1 DC 10:1 (500ms/div) DC 10:1 DC 10:1 DC 10:1 (500ms/div) NORM:20kS/s NORM:20kS/s PDO1 IC2 1 IC2 24 PDO2 IC2 2 IC2 23... -
Page 35: Trouble Shooting
CD-BP1200W/1250W 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 36 CD-BP1200W/1250W (1) Focus-HF system check Stopped CH1=500mV CH3=500mV 500ms/div Although a CD is inserted and the cover is closed, "NO DC 10:1 DC 10:1 (500ms/div) NORM:20kS/s DISC" is displayed. Press the OPEN/CLOSE switch (SW1) without inserting a disc, and try starting the playback operation.
- Page 37 CD-BP1200W/1250W (2) Tracking system check Check the TE waveform at pin 18 on IC1. The tracking servo is not activated. If the waveform shown in Figure 37-1 appears and soon after Check the peripheral circuits at pins 18 and 19 on IC1, pin 23 on NO DISC appears.
- Page 38 CD-BP1200W/1250W (4) PLL system check Stopped 1999/04/05 17:33:17 CH1=500mV CH3=1V CH4=1V 500ms/div DC 10:1 DC 10:1 DC 10:1 (500ms/div) NORM:20kS/s When a disc is loaded, start play operation. PDO1 The HF waveform is normal, but the TOC data cannot be PDO2 read.
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Page 39: Function Table Of Ic
CD-BP1200W/1250W FUNCTION TABLE OF IC IC1 VHiLA9235M/-1: Servo Amp. (LA9235M) ODRV FIN1 LA9235M RFSW FIN2 AGCON 28 RF- TIN1 TIN2 26 NC 25 PH 24 BH REF1 ODRV 23 NC PH/BH 22 RFEV VREF 21 FE- 20 FE LDOF 19 TE-... - Page 40 CD-BP1200W/1250W IC2 VHiLC78641E-1: Servo/Signal Control (LC78641E) (1/2) Terminal Name Input/Output Setting in Reset Function Pin No. PDO1 Output – For PULL Phase-comparison output terminal for built-in VOC control. PDO2 Output – Phase-comparison output terminal for built-in VOC control. Rough servo : OFF, phase servo : ON.
- Page 41 CD-BP1200W/1250W IC2 VHiLC78641E-1: Servo/Signal Control (LC78641E) (2/2) Terminal Name Input/Output Setting in Reset Function Pin No. LVDD – – L channel Power terminal for L channel. LCHO Output 1/2VDD D/A converter L channel output terminal. LVSS – – Ground terminal for L channel. Surely connected to 0V.
- Page 42 CD-BP1200W/1250W IC701 RH-iX0337AWZZ: System Microcomputer (IX0337AW) (1/2) Pin No. Port Name Terminal Name Input/Output Function — (+) Power supply -20dBATT — -20dB Attenuator S-BUSY Output Communicate to mpeg microcomputer T–BIAS Output Tape record bias T_T1/T2 Output Tape T1/T2 change REC/PLAY...
- Page 43 CD-BP1200W/1250W IC701 RH-iX0337AWZZ: System Microcomputer (IX0337AW) (2/2) Pin No. Port Name Terminal Name Input/Output Function P120 T2 PLAY SW_B Input PLAY switch for T2 P119 Input Tape 2 A–Side full proof P118 Input Tape 2 B_Side full proof P117 MIC IN...
- Page 44 CD-BP1200W/1250W 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 44 BLOCK DIAGRAM OF IC – 44 –...
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Page 45: Fl Display
CD-BP1200W/1250W FL701 VVKSVA9MS13-1: FL Display h j k Figure 45 FL DISPLAY – 45 –... - Page 46 CD-BP1200W/1250W — M E M O — – 46 –...
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Page 47: Parts Guide
CD-BP1200W/1250W PARTS GUIDE MINI COMPONENT SYSTEM CD-BP1200W MODEL CD-BP1200W Mini Component System consisting of CD-BP1200W (main unit) and CP-BP1200 (speaker system). MINI COMPONENT SYSTEM CD-BP1250W MODEL CD-BP1250W Mini Component System consisting of CD-BP1250W (main unit), CP-BP1250 (front speaker) and GBOXS0043AWM1 (surround speaker). - Page 48 CD-BP1200W/1250W PRICE PRICE DESCRIPTION PARTS CODE PARTS CODE DESCRIPTION RANK RANK AB 100 µH,Choke L103 VP-DH101K0000 CD-BP1200W/1250W AB 330 µH,Choke L104 VP-MK331K0000 L312 RCILR0056AWZZ AB FM RF INTEGRATED CIRCUITS AB 100 µH,Choke L351,352 VP-DH101K0000 AB 100 µH,Choke L701 VP-DH101K0000 VHILA9235M/-1 AQ Servo Amp.,LA9235M...
- Page 49 CD-BP1200W/1250W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AC 220 µF,10V,Electrolytic AB 10 µF,16V,Electrolytic C138 VCEAZA1AW227M J C711,712 RC-EZD106AF1C AB 3.3 µF,50V,Electrolytic AB 0.1 µF,50V,Electrolytic C139 VCEAZA1HW335M J C713 RC-EZD104AF1H AA 0.0082 µF,100V,Polypropylene AA 0.01 µF,16V C140...
- Page 50 CD-BP1200W/1250W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R106,107 VRD-MN2BD222J AA 2.2 kohms,1/8W R709~718 VRD-ST2CD102J AA 1 kohm,1/6W R108,109 VRD-MN2BD332J AA 3.3 kohms,1/8W R719~721 VRD-MN2BD102J AA 1 kohm,1/8W R110 VRD-MN2BD473J AA 47 kohms,1/8W R722 VRD-MN2BD103J AA 10 kohm,1/8W...
- Page 51 CD-BP1200W/1250W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK CABINET PARTS CNP11 92LCONE5P53254 J AB Plug,5Pin CNP12 92LCONEAP53254 J AD Plug,10Pin CNP101 QCNCM705CAFZZ J AA Plug,3Pin 92LCAB3328AASY J Front Panel Ass’y [1200W] CNP102 QCNCM705GAFZZ J AB Plug,7Pin 92LCAB3329AASY J Front Panel Ass’y [1250W]...
- Page 52 CD-BP1200W/1250W PRICE PRICE DESCRIPTION PARTS CODE PARTS CODE DESCRIPTION RANK RANK 92LPT0312005 AL Gear,Cam 92LBAG1460C1 AB Polyethylene Bag,Accessories 92LPT0320201 AE Support,Stabilizer 92LBAG1770A AB Polyethylene Bag,AC Power 92LPT0330301 AU Chassis,Loading Supply Cord 92LPT0330803 AK Chassis,CD Mechanism 92LBAG760C AA Polyethylene Bag,AC Plug...
- Page 53 CD-BP1200W/1250W CD-BP1200W/1250W 306-2 306-1 306-3 703x2 305x2 PWB-C Figure 6 CD MECHANISM EXPLODED VIEW – 6 –...
- Page 54 CD-BP1200W/1250W CD-BP1200W/1250W Belt Connection 601x3 Motor FF/REW Motor Roller Ass'y 202-1 Flywheel Roller Ass'y FF/REW Flywheel Roller Ass'y Tape2 611x8 Ass'y PWB-A2 Main Belt LED722 605x9 202-2 611x3 IC902 611x2 IC904 614x2 IC905 FL701 611x2 IC901 201-11 Silicon grease 201-13...
- Page 55 CD-BP1200W/1250W CD-BP1200W/1250W 604x2 604x2 MECHANISM PWB-E 250x4 239x4 204-2 204-1 204-3 PWB-B Figure 8 CABINET EXPLODED VIEW (2/2) – 8 –...
- Page 56 CD-BP1200W/1250W CP-BP1200/1250 SP1(L-CH) SP2(R-CH) 905x4 SPEAKER SP1(L-CH) SP2(R-CH) SPEAKER SP1(L-CH) SP2(R-CH) Figure 9 SPEAKER EXPLODED VIEW (1/2) – 9 –...
- Page 57 CD-BP1200W/1250W GBOXS0043AWM1 CD-BP1250W Only 905x6 SP1(L-CH) SP2(R-CH) SP1(L-CH) SP2(R-CH) Figure 10 SPEAKER EXPLODED VIEW (2/2) – 10 –...
- Page 58 CD-BP1200W/1250W — M E M O — – 11 –...
- Page 59 CD-BP1200W/1250W — M E M O — – 12 –...
- Page 60 CD-BP1200W/1250W © COPYRIGHT 2000 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.