Service manual

ManualsBrandsSharp ManualsCar Stereo SystemCD-C482

– 1 –

CD-PC672

No. S4915CDPC672/

CONTENTS

Page

IMPORTANT SERVICE NOTES (For U.S.A. Only) ........................................................................................................... 2

SPECIFICATIONS ..............................................................................................................................................................3

NAMES OF PARTS ........................................................................................................................................................... 4

OPERATION MANUAL ...................................................................................................................................................... 7

QUICK GUIDE ................................................................................................................................................................... 8

DISASSEMBLY .................................................................................................................................................................. 9

REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 12

ADJUSTMENT ................................................................................................................................................................. 13

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 16

BLOCK DIAGRAM ........................................................................................................................................................... 17

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .............................................................................................. 20

VOLTAGE ........................................................................................................................................................................ 40

WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 41

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 42

FUNCTION TABLE OF IC................................................................................................................................................ 47

FL DISPLAY ...................................................................................................................................................................... 54

REPLACEMENT PARTS LIST/EXPLODED VIEW

PACKING OF THE SET (For U.S.A. Only)

CD-PC672

• 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

CD-PC672 mini component system consisting of CD-PC672 (main

unit), CP-C672 (front speakers), CP-SW672 (sub woofer),

GBOXS0022AWM1 (center speaker) and GBOXS0023AWM1 (rear

speaker).

Manufactured under license from Dolby Laboratories Licens-

ing Corporation.

DOLBY, the double-D symbol and "PRO LOGIC" are

trademarks of Dolby Laboratories Licensing Corporation.

Summary of content (67 pages)

PAGE 1
CD-PC672 SERVICE MANUAL No. S4915CDPC672/ CD-PC672 CD-PC672 mini component system consisting of CD-PC672 (main unit), CP-C672 (front speakers), CP-SW672 (sub woofer), GBOXS0022AWM1 (center speaker) and GBOXS0023AWM1 (rear 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. Manufactured under license from Dolby Laboratories Licensing Corporation.
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CD-PC672 FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. IMPORTANT SERVICE NOTES (For U.S.A. Only) 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.
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CD-PC672 SPECIFICATIONS CD-PC672 General Power source: Power consumption: Dimensions: Weight: Amplifier section Output power: (Except for Canada) Output power: (For Canada) Output terminals: Input terminal: Tuner section Frequency range: Front speaker section AC 120 V, 60 Hz Stand-by; 0.3 W Power on; 150 W Width; 10-5/8" (270 mm) Height; 11-13/16" (300 mm) Depth; 14-1/4" (362 mm) 17.7 lbs. (8.
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CD-PC672 NAMES OF PARTS CD-PC672 ■ Front panel 11. 12. 13. 14. 15. Disc Number Selector Buttons Disc Tray Multi Indicator Disc Skip Button Open/Close Button 16. 17. 18. 19. 10. 11. 12. 13. 14. 15. 16. 17. 18.
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CD-PC672 ■ Rear panel 11. 12. 13. 14. 15. 16. 17. 18. CD Digital Output Socket AC Power Lead FM/AM Loop Aerial Socket Video/Auxiliary (Audio Signal) Input Sockets Rear Speaker Terminals Centre Speaker Terminals Front Speaker Terminals Sub Woofer Terminals 3 1 4 2 5 6 7 8 CP-C672 ■ Front speakers 1 11. 12. 13. 14. 2 3 Tweeter Woofer Bass Reflex Duct Speaker Wire 4 GBOXS0022AWM1 5 ■ Centre speaker 15. 16. Full-Range Speaker Speaker Wire 6 GBOXS0023AWM1 ■ Rear speaker 7 17. 18.
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CD-PC672 CD-PC672 1 ■ Remote control 11. Remote Control Transmitter LED 2 12. 13. 14. 15. 16. 17. Surround Level Buttons Centre Level Buttons Dolby Pro Logic Button Centre Mode Button Test Tone Button Balance Control Buttons 3 4 5 6 ● Tuner control section 18. 8 7 Preset Up/Down Buttons 9 ● CD control section 19. 10. 11. 12. 13. 14. 15. 16. 17.
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–7– 9 8 7 6 5 4 3 2 AM 12:00 POWER MEMORY/ SET CLOCK AM 0:00 0:00 TUNING/ TIME ( ) In this example, the clock is set for the 12-hour (AM 12:00) system. (Main unit operation) SETTING THE CLOCK Within 5 seconds, press the MEMORY/SET button. Press the CLOCK button. Press the POWER button to enter the stand-by mode. Press the TUNING/TIME ( or Press the MEMORY/SET button. ) button to adjust the hour. Press the TUNING/TIME ( minutes. or Press the MEMORY/SET button.
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–8– Altavoz central Center speaker Front speaker (Left) Altavoz delantero (Izquierdo) Red Rojo Front speaker (Right) Altavoz delantero (Derecho) POWER POWER ● Batteries are not included. ● Las pilas no están incluidas. ● 2 “AA” batteries ● Dos pilas “AA” 15 15 Remote Sensor Sensor remoto 8” - 20’ (0.
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CD-PC672 DISASSEMBLY CD-PC672 Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance: 1. Take cassette tape and compact disc out of 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.
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CD-PC672 Front Panel ( K1 ) x1 ø3 x10mm ( K2 ) x1 Washer (E1)x2 (F2)x2 (F3)x5 1 Push 1 Push 2 Pull POWER PWB Turntable (E2)x1 (F2)x2 (E3)x1 Headphoens PWB POWER PWB Disc Tray ( L1 ) x1 ø3 x10mm (F1)x3 ø3x10mm ( L2 ) x1 (F1)x1 ø3x10mm Main PWB ( L1 ) x1 ø3 x10mm Figure 10-1 CD Player Unit Switch PWB ( L2 ) x1 Figure 10-3 (J2)x1 Front Panel ( M1 ) x1 ø3 x10mm (H1)x2 ø3x10mm CD Servo PWB Display PWB (H1)x10 ø3x10mm ( M2 ) x2 Headphones PWB Open (H2)x1 Cassette Holder (H1)x1 ø3x10mm
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CD-PC672 CP-C672 STEP 1 CP-C672 REMOVAL PROCEDURE Front Speaker 1. Net .......................... 2. Front Panel ............ 3. Screw ..................... 4. Tip .......................... 5. Screw ..................... 6. Tip .......................... FIGURE (A1) x1 (A2) x1 (A3) x4 (A4) x2 (A5) x2 (A6) x2 11-1 Front Panel (A2)x1 (A5)x2 (A6)x2 (A4)x2 (A3)x4 Screw Driver Net (A1)x1 Figure 11-1 CP-SW672 STEP 1 REMOVAL Front Speaker CP-SW672 PROCEDURE FIGURE 1. Net ......................
PAGE 12
CD-PC672 REMOVING AND REINSTALLING THE MAIN PARTS CD MECHANISM SECTION Loading / Up / Down Motor Perform steps 1, 2, 3 and 10-14 of the disassembly method to remove the CD mechanism. Motor PWB How to remove the loading motor (See Fig. 12-1) 1. Remove the screws (A1) x 2 pcs., to remove the loading motor. ( A1 ) x2 ø2.6 x5mm Figure 12-1 How to remove the pickup (See Fig. 12-2) Stop Washer ( B1 ) x2 ( B3 ) x1 ø2.6 x6mm 1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2). 2.
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CD-PC672 NOTES ON SCHEMATIC DIAGRAM • Resistor: To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type. • Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad.
PAGE 14
SOLM1 M3 LOADING SW1 OPEN/CLOSE SW3 DISC No. SW2 MECHA UP CD-PC672 M TO MAIN SECTION 10 +5V 1 2 3 4 5 6 CNP11 BI1A 2 1 BI1B 2 1 10 +7.3V (B1) 9 8 7 6 5 4 3 2 1 CNP10 REGULATOR 3 2 1 CNP99 9 8 7 6 5 4 3 2 1 CNS10 GND (D) MECHA UP GND (D) DISK NO. OPEN/CLOSE GND (D) M– M+ GND (M) TO MAIN SECTION (TO IC601) Q81 +4.3V 25 CONT2 46 39 38 33 26 CV+ SLC SL1 JP– SLD NC SPO FD TO +B1 +B5 42 41 20 40 24 18 28 39 38 37 36 DRF 54 SL+ 31 SL– 30 IC1 LA9241M SERVO AMP.
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CD-PC672 SWM3 FOOL PROOF SWM4 F.A.S SOLM1 SOLENOID AM LOOP FM ANTENNA ANTENNA L301 IC301 TA7358AP FM FRONT END 1 FM B.P.F 6 +B4 MM TAPE MO +B4 CF301 T301 9 4 5 8 7 L312 T382 FM IF IN FM OSC FM RF VR381 MPX VCO ADJ AM IF T381 CF351 T301 1 3 AM MIX 21 20 6 5 AM IF GND FM+B FM DET IC303 LA1805 FM/AM IF MPX.
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CD-PC672 FL701 DISPLAY Q702 Q703 M 1 2 3 4 ~ 15 16 ~ 25 26 ~ 28 29 ~ 36 37 38 39 MM1 TAPE MOTOR Q705 Q706 Q707 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 +B7 1 RX701 3 2 +B7 IC701 IX0310AW SYSTEM CONTROL MICROCOMPUTER VDD +B7 50 49 48 47 46 VDD 45 44 43 42 41 40 39 38 37 36 35 34 AVDD 33 32 31 VDD 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 UNSWITCH +B7 MEMORY BACK UP 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11
PAGE 17
CD-PC672 C30 0.1/50 C31 220/6.3 CL DAT R45 4.7K C24 2.2P LATOH C27 0.001 41 JP– JP+ JPCLO SLOF SLOF CV+ 40 CV– 39 HF TP1 R43 56K C23 0.0027 R38 470 SLOF 38 HFL 37 TES 36 TOFF 35 TGL 34 JP+ 33 SL+ JP– SLD SL– REF FE1 42 R42 47K R39 1K R31 R30 1.2K 6.8K 29 30 31 32 C20 47/16 C19 1/50 R32 10K R33 1.2K R34 3.3K C22 220P R36 220K R28 10K RFSM RF C21 0.0033 REF S.Q.R CV+ SLEO SPO SP– SPG REF R27 39K 43 C26 0.033 R41 47K R40 C25 5.6K 27P 27 28 C17 0.
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XL1 16.934MHz C50 0.022 CNS11 D82 1SS133 L61 0.82µH 1 2 3 4 5 6 CNP11 Q52 KTC3203 Y +B R66 220 R64 22 C52 100/16 CNP99 BI1-A 2 1 BI1-B 2 1 3 2 1 3 2 1 CNS99 R54 330 +B +B R83 390 R80 820 CD SIGNAL R81 820 D93 1SS133 SOLM2 SOLENOID R84 2.2K D91 1SS133 Q51 KRC102 M BIM5 D92 1SS133 R82 390 1 2 3 4 5 6 7 8 9 M+ M– CD_D_NO R47 10K 10 C37 0.022 CNP10 SOL+ 1 SOL– 2 M+ 3 M– 4 GND(D) 5 OPEN CLOSE 6 DISC NO.
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CD-PC672 TO CD SERVO PWB P21 12-C CNP11 TO DECK SECTION P25 12-B TO TUNER SECTION P27 12-F 1 2 3 4 5 6 CNS11 1 2 3 4 5 6 RCH A_GND LCH D_GND 7.3V M_12V A_12V D_GND A_GND REC_R REC_L TAPE_R TAPE_L M_GND T1/T2 BIAS REC_MUTE 11 12 13 14 15 16 17 18 19 20 21 DO CE DI CL D_GND A_12V TUN_R TUN_L TUN_SM A 2 3 4 5 6 7 8 9 10 A_GND 1 BI401 +B +B +B +B FFC701 CNP502 R501 100K R502 100K D 19 C509 0.
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CD-PC672 PWB 6 CNS11 BI401 FM SIGNAL +B C448 2.2/50 16 R402 27K R407 1.8K C463 390P R408 1.8K C464 390P 0.047(ML) 0.047(ML) 0.047(ML) 0.047(ML) C445 100P R406 27K C459 1000/16 +B +B R483 100K C403 C407 C471 0.047 (ML) 0.082(ML) C405 0.22/50 R472 220K 0.018(ML) C474 0.15 (ML) R476 27K C476 0.15 (ML) C409 0.068(ML) C411 0.
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CD-PC672 A PLAYBACK SIGNAL RECORD SIGNAL 8.6V TAPE1_R 1 A_GND 2 TAPE1_L 3 0V R105 3.3K 0V 0V 0V 0V R107 47K 0.7V R103 2.2K 22 1 2 C111 R117 330P 1K IC101 AN7345K PLAYBACK AND RECORD/ PLAYBACK AMP. 3 4 C113 330P C115 47/25 R121 R123 100K 3.9K R 5 R119 C117 C119 0.033 560P 56 R111 10K MAIN PWB-A1(2/3) G H • NOTES ON SCHEMATIC DIAGRAM can be found on page 16. 1 2 3 4 Figure 24 SCHEMATIC DIAGRAM (5/12) – 24 – 21 – + 112K 112K + – Q103 2SC2389 SE F 23 HICH=T1 0.001 0.
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CD-PC672 TAPE_R 20 +B T1/T2 REC_MUTE R182 220K R138 6.8K C122 1/50 4 P C134 22/25 NC 17 16 – + 56K 112K HICH=CHROME CH=T1 112K 56K + – 7 C119 33 560P R131 18K R123 3.9K R125 5.6K 7 R135 R137 2.7K 6.8K C131 0.001 R139 560 R141 C135 56 0.068 C139 0.0033 C121 1/50 9 C133 22/25 3.3/50 15 25 8 7 C128 3 P 6 0.022 5 NC C127 4 8 15 14 13 10 12 11 BIAS D102 DS1SS133 D_GND +B D101 DS1SS133 A_12V A_GND M_GND 13 18 19 21 12 16 14 17 15 +B R158 330(1/4W) R162 47K 11.7V 11.
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CD-PC672 CNP301 FM C304 0.01 D301 DS1SS133 D391 DS1SS133 C C308 L312 4.7P(UJ) R316 82 C309 0.001 R311 100K C320 100P R301 10 FM BAND COVERAGE fL VD302 FM OSC T301 VARIABLE CAP R309 C313 10K 22P (CH) FM IF T302 1 3 CF301 FM IF 2 R315 820 R317 4.7K R322 680 R323 220K C314 0.0047 D 7 8 9 C317 0.001 C315 0.0047 C316 0.022 R314 22(1/6W) C306 0.022 C307 10/50 C303 10P(CH) 1 2 3 4 5 6 C324 3.9P(UJ) 1 2 3 B IC301 TA7358AP FM FRONT END TP301 C318 100P R324 47 Q301 KTC3194 Y R351 1.
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CD-PC672 +B +B C383 220P L317 100µH D381 DS1SS133 TUN_R TUN_L A_12V (AUDIO) A_GND (A_GND) (D_GND) D_GND +B 2 1 3 Q351 KRA102 M IC302 LC72131 PLL CONTROLLER TUN_MUTE NC 2 3 4 5 6 7 8 9 10 11 R354 1K R355 1K R356 1K R357 1K R358 1K +B R387 680 ZD351 DZ5.1BSB BO4 IO2 IO1 IF IN BO1 FM IN NC AM IN PD DO VDD CL +B +B C356 0.022 R353 2.2K R351 1.5K A IN DI R385 10K C392 1/50 +B C357 47/25 C354 1/50 21 20 19 18 17 16 15 14 13 12 CE A OUT 1 AM IF R390 2.
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CD-PC672 +B A F F F S22 S21 S20 S19 S18 S17 S16 S15 S14 S13 S12 S11 S10 S09 S08 S07 S06 S05 S04 S03 S02 S01 G11 G10 G09 G08 G07 G06 G05 FL701 DISPLAY Q706 KTC3199 GR Q707 R702 KTC3199 GR 100K R703 100K C702 1/50 R789 1K R729 1K 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 80 S10 R790 33 +B C721 47/50 79 VLOAD 78 S11 AC.
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CD-PC672 R781 10K F F G10 G09 G08 G07 G06 G05 G04 G03 G02 G01 F C716 47/16 R788 1K +B 27 28 29 30 31 32 33 34 35 36 37 38 39 C717 0.022 1 2 3 4 R793 1K LED711 5 R792 1K LED712 6 LED713 R791 1K 7 LED711~LED713 8 :SLI342YCJ 9 C706 1/50 01 AW ONTROL MPUTER KEYIN3 KEYIN2 VSS REMOCON SYS STOP O/C SW PUIN SW AVREF AVDD KEYIN1 SQOUT CD DSP CQCK CD DSP RES FRF(DRF) SLD+ 28 SPEANA1 SLD– AVSS 29 TUN SM 30 T2 RUN SPEANA3 SPEANA2 C709 0.
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CD-PC672 IC901 STK4084B POWER AMP. + 11 12 13 R957 1K 17 18 C923 C926 47P 47P C918 47/50 Ch3 Out 19 20 C929 15P R927 R930 R931 470 56K 1K R961 39K R909 1K C908 0.001 R959 3.9K C976 22/25 R955 10K R956 5.
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C978 47/50 R968 1K 2 Q907 KRC107 M 1 D909 DS1SS133 3 RL901 C979 10/35 1 1 2 2 IC99 1 2 3 Q905 KTC3199 GR F903 4A/125V RL902 C937 0.047 (ML) C940 0.1 (ML) R934 4.7 R937 4.7 R940 4.7 D908 DS1SS133 IC951 LA4451 POWER AMP. + 9 8 – R949 4.7 D907 1N4004S C959 0.047 (ML) C944 1000/25 D906 1N4004S + – + – + – R944 4.7 F804 3A / 250V C817 4.7/50 C808 C807 0.047 0.047 (ML) (ML) REAR SPEAKER 8 OHMS MIN.
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CD-PC672 R324 T301 VD302 C313 R353 R385 C453 C457 C433 R674 5 4 Figure 32 WIRING SIDE OF P.W.
PAGE 30
CD-PC672 Q109 CNS102 R115 R174 TO TAPE MACHAISM PWB P38 5-D C153 TO TAPE MACHAISM PWB P38 4-D CNS101 25 1 R443 C438 C504 C507 FFC701 C436 R501 C503 C509 C506 TO DISPLAY PWB P34 5-A 25 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 4 5 3 2 1 CNP701 R502 C502 R441 C505 C508 C437 R442 C549 R503 R504 C524 C547 3 Q126 C101 33 32 C526 X501 C514 R428 C501 48 C550 C551 R520 C433 C523 C515 C102 C117 IC501 R512 R506 49 50 45 C512 55 C510 60 25 40 30 35 C521 C513
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CD-PC672 TO POWER PWB P36 1-G TO MAIN PWB P33 12-D CNP806 CNP502 TO TA CN CNS806 A 1 GY WH GY WH GY WH RD DISPLAY PWB-A2 1 RD 1 2 3 4 5 6 7 25 FFC701 CNP701 SW715 VIDEO LED721 1 3 5 7 9 11 13 15 17 19 21 23 25 2 4 6 8 10 12 14 16 18 20 22 24 R782 1 BI703 7 R700 B D722 RD13 1 Q702 LED719 TUNER/BAND SW714 RD14 SW713 STOP RD11 REC/PAUSE SW711 SW717 CD 2 3 C722 R757 R756 R737 R736 SW701 POWER REW SW710 1 R748 R735 R734 R733 R799 D R716 IC704 RD01 R739 R738 D721 RD10
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CD-PC672 TO TAPE MECHANISM PWB P38 5-A TO CD SERVO PWB P39 11-E CNPM1 CNS12 CNS12 CNSM1 1 2 3 4 5 6 7 8 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 RD BL BL BL BL BL BL BL BL BL BL BL BL BL BL WH GY WH GY WH GY WH RD VR701 BI701 VR702 VOLUME JOG SUB WOOFER VOLUME 1 8 LED723 D716 RD32 R749 R750 SW725 PLAY RD22 R759 RD23 E C B C704 C703 R758 R760 SW724 TUNING DOWN Q703 D716 LED717 LED724 1 BI702 15 R788 R751 TUNING UP SW723 R725 15 C717 R781 R769 XL701 R786 R787 SW733 BYPASS R7
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CD-PC672 A FROM POWER TRANSFORMER P38 2-C B 1 2 CNS80 CNS805 1 CNP805 2 3 C815 C817 CNS802 C910 R911 C959 C942 R921 R933 C916 R917 R961 D905 R913 R923 C924 C943 R931 IC951 R801 14 13 12 11 10 9 8 7 6 5 4 3 2 1 R969 C928 2 C819 3 R929 R925 C820 R926 R928 C921 R813 C821 C827 D821 Q903 C824 R810 3 2 1 C822 FROM MAIN PWB P33 9-H C823 CNP501 2 1 C828 BI801 E C B Q904 C918 2 C903 R903 D909 Q907 C829 3 2 1 1 2 ZD803 3 2 1 BI801 Q906 RL901 CNP803 3 4 Figure 36 W
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CD-PC672 AC POWER SUPPLY CORD(249) AC 120V, 60Hz M901 FAN MOTOR (251) (251) RD BR 1 2 CNS804 FROM POWER TRANSFORMER P38 1-E CNP801 RL801 1 C826 C818 PT802 POWER TRANSFORMAER D811 D814 C814 D813 D812 6 IC803 Q802 3 1 2 2 1 0 3 R808 CNS801 2 D825 R968 Q905 E C B R966 R967 C979 C910 R911 C909 D903 C978 R964 R965 C959 R910 2 1 CNP804 C904 C916 R917 C907 L-CH R924 R916 R-CH IC901 CENTER SPEAKER 4 OHMS 8 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 L-CH C917 C905 R904 C903 C902
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CD-PC672 A SWM3 F. P. (260-9) 1 2 2 1 FWM2 FWM1 WH BK TO DISPLAY PWB P35 7-A CNSM1 SWM4 F. A.
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CD-PC672 R47 C37 C48 R51 C39 R50 48 40 C44 XL1 C56 R46 C40 C27 R41 R42 C26 R44 C24 R40 C25 R38 50 45 R93 C42 32 33 C41 R54 R55 C50 R91 L61 C43 D82 R71 C71 C52 Q51 2 1 R89 C51 R81 R80 D93 D92 C19 R90 R88 R66 R64 CNP99 3 2 1 49 55 25 BI1-B R36 R35 B C E CNP11 6 5 4 3 2 1 60 BI1-A C72 R83 R82 R84 C77 R32 Q52 1 R61 3035 C18 2 R58 C45 R74 R33 R63 C49 R57 R62 IC2 15 20 C21 C17 R30 3 CNP10 D91 R1 32 33 R31 1 2 3 4 5 6 7 8 9 10 5 10 11 R59 64
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CD-PC672 VOLTAGE IC1 PIN NO. 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 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 VOLTAGE 2.4V 2.4V 2.5V 2.5V 2.4V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.4V 2.5V 0V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.2V 2.2V 0V 0V 4.8V 4.8V 0V 0V 4.8V 0V 0V 1.5V 2.4V 2.5V 2.4V 0V 2.5V 2.5V 0V 0V 2.4V 4V 4V 0V 0V 4.8V 4.8V 2.5V 2.5V 1.0V 1.0V 2.2V 4.2V 0V 4.
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CD-PC672 WAVEFORMS OF CD CIRCUIT STOP FOCUS 1 2 PLAY SERCH 5ms 0.50 V IC1 20 F.E 5ms 5.0 V IC1 54 DRF 0.5ms 10.0 V JP+ 7 0.5ms 10.0 V JP- 8 0.5ms 0.50 V JP 9 0.5ms 1.00 V TE 3 1 3 6 PLAY CUE 0.5ms 1.00 V HF 4 0.5ms 5.0 V HFL 1 5 0.5ms 5.0 V TES 3 3 0.5ms 1.00 V HF NORMAL DISC TN0=01 10 20ms 1.00 V SPO 11 20ms 2.00 V CLV+ 2 REVIEW PLAY TCD-712 (140mm) TN0=01 4 5 0.5ms 5.0 V HFL 1 0.5ms 5.0 V TES 3 6 50ms 10.0 V JP+ 7 50ms 10.0 V JP- 8 50ms 0.50 V JP 9 2 0.
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CD-PC672 TROUBLESHOOTING (CD SECTION) 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 troubleshooting instructions.
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CD-PC672 • When the turntable fails to stop. 5V Is from 2.5V 5 V till 2.5V down pulse (approx. 300 ms) 0V No input into the IC701 pin 21 when the turntable is rotating? Check the SWM3 and the wiring from the IC701 pin 21 to the SWM3. Yes Is there following voltage input on the IC701 pin 21 in the specific state? When the CD mechanism is moved up: 0V In other states: 4.3V No Check the MECHA UP SW and the wiring from the IC701 pin 21 to the MECHA UP SW. Yes Check IC2 pin26 the periphery.
PAGE 41
CD-PC672 • When the CD tray fails to open or close. Is there following voltage input in specific state of IC701 pin 19? Open state: 0V Close state: 0V Intermediate state between open state and close state: 4.3V Check the OPEN CLOSE SW and the wiring from the IC701 pin 19 to the OPEN CLOSE SW. No Yes Is H output to IC2 pin 24 or 25 for 7 seconds when the OPEN/ CLOSE key is pressed?IC91 is defective. Replace it. Check the wiring of the IC2 pins 24 and 25. No OK IC2 defective.
PAGE 42
CD-PC672 • Playback can only be performed when a disc is loaded. Is the Focus servo active? (Can you hear it working?) No Check the laser diode driver. Check the area around IC1(16) - (21) (focus servo circuit). No If the disc is not turning, the DRF should not change to "H". Yes Yes Does the DRF signal change from "L" to "H"? Check the spin system. Yes Yes No Is HF waveform normal (see the Fig.45-1, 2)? Check the periphery of IC1 pins 41 and 42. Level is abnormal. Yes Yes Check the spin system.
PAGE 43
CD-PC672 • Checking the spin system. Play operation is performed without disc. Yes Yes The turntable rotates a little. The spin driver circuit is normal. No Yes The turntable fails to rotate or rotates at high speed. Check the periphery of IC1 pins 23 to 27, pin 39, and pin 40, IC2 pin 12 and pin 13, IC3 to CNP3. • Checking the VCO-PLL system Play operation is performed when disc exits. Yes Although HF waveform is normal, TOC data cannot be read. Yes Check PDO waveform (Fig. 46).
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CD-PC672 FUNCTION TABLE OF IC IC1 VHiLA9241M/-1: Servo Amp. (LA9241M) (1/2) Pin No. Function Port Name 1 FIN2 Connection pin for photodiode of pickup. RF signal is generated through addition with FIN pin, and FE signal is generated through subtraction. 2 FIN1 Connection pin for photodiode of pickup. 3 E Connection pin for photodiode of pickup. TE signal is generated through subtraction with F pin. 4 F Connection pin for photodiode of pickup. 5 TB Pin for input of DC component of TE signal.
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CD-PC672 IC1 VHiLA9241M/-1:Servo Amp.(LA9241M) (2/2) Pin No. Function Port Name 51 CL Micro computer command clock input pin. 52 DAT Micro computer command data input pin. 53 CE Micro computer command chip enable input pin. 54 DRF (DETECT RF) RF level detection output. 55 FSS (Focus Serch Select) Pin to switch focus search mode. (± search/+ search for reference voltage) 56 VCC2 VCC pin for servo system and digital system. 57 REFI Pin to connect pass control for reference voltage.
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CD-PC672 IC2 VHiLC78622N-1: Servo/Signal Control (LC78622NE) (1/2) Pin No. Terminal Name Input/Output Function 1 DEFI Input Defect detection signal (DFF) input terminal. (When this terminal is not used, connect it to 0V.) 2 TAI Input For PLL Input terminal for test. Pull-down resistor built in. Be sure to connect this terminal to 0V.
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CD-PC672 IC2 VHiLC78622N-1: Servo/Signal Control (LC78622NE) (2/2) Pin No. Terminal Name Input/Output Function 47* SBSY Output Sub-code clock sync signal output terminal. 48* EFLG Output C1, C2, single, double correction monitor terminal. 49* PW Output Sub-code P, Q, R, S, T, U, and W output terminal. 50* SFSY Output Sub-code frame sync signal output terminal. Falling occurs when the sub-code is in standby state. 51 SBCK Input Sub-code read clock input terminal.
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CD-PC672 IC3 VHiM63001FP-1: Focus/Tracking/Spin/Slide Driver (M63001FP) 1 2 3 4 5 6 7 8-14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29-35 36 37 38 39 40 41 42 Terminal Name Function IN2IN1AIN1BOUT1OUT1+ OUT2OUT2+ GND OUT3+ OUT3IN3VCC1 STANDBY VRFE MUTE IN5IN5+ VCC2 IN4OUT4OUT4+ VCC3 GND OUT5+ OUT5OUT6+ OUT6VCC4 IN6IN6+ CH2 inverted input. CH1 inverted input. CH1 output offset control. CH1 inverted output. CH1 non-inverted output. CH2 inverted output. CH2 non-inverted output.
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CD-PC672 IC701 RH-iX0301AWZZ:System Control Microcomputer (IX0301AW) (1/2) Pin No.
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CD-PC672 IC701 RH-iX0301AWZZ:System Control Microcomputer (IX0301AW) (2/2) Pin No.
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CD-PC672 FL701 VVKBJ685GNK-1: FL Display 11G 9G 10G SI S1 S5 S4 S3 S2 CO Dp B7 B6 B5 B4 B3 B1 B1 B2 1G 2G 3G 4G 5G 6G 7G 8G a h B7 B8 B9 B10 B11 B12 B13 B14 B21 B20 B19 B18 B17 B16 B15 j f B6 B5 b k g m n r B4 B3 B2 e p c d B1 [ 1G~8G ] [ 10G ] ANODE CONNECTION 1G 2G~6G 7G 8G 9G 10G 11G P1 Dp Dp Dp Dp S1 S1 S1 P2 d d d d B1 B1 B1 P3 c c c c B2 B2 B2 P4 n n n n B3 B3 B3 P5 p p p p B4 B4 B4 P6 r r r r B5 B5 B5 P7 e
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CD-PC672 PARTS GUIDE MODEL CD-PC672 CD-PC672 mini component system consisting of CD-PC672 (main unit), CP-C672 (front speakers), CP-SW672 (sub woofer), GBOXS0022AWM1 (center speaker) and GBOXS0023AWM1 (rear speaker). “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For U.S.A. only Contact your nearest SHARP Parts Distributor to order.
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CD-PC672 NO.
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CD-PC672 NO.
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CD-PC672 NO.
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CD-PC672 NO.
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CD-PC672 NO.
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CD-PC672 NO.
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CD-PC672 NO.
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CD-PC672 NO. 906 907 908 SP1,2 SP3,4 PRICE RANK PARTS CODE 92L372-0106 92L372-0108 92L351-0326 VSP0013WB426A VSP0050TBM66A J J J J J AB AC AC AZ DESCRIPTION NO.
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CD-PC672 CD-PC672 306-2 A 306 306-1 701 306-3 B 304 701 302 704 C 702 702 301 D 303 703x2 703x2 E M1 F 305 M2 305x2 G SW4 H PWB-D 1 2 3 4 Figure 9 CD MECHANISM EXPLODED VIEW –– 64 9 –– 5 6
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CD-PC672 CD-PC672 240 A 602x2 608x11 240-1 PWB-A3 606x2 M901 242 253 610x2 607x2 264 246 PWB-A2 257 B 240-2 247 PWB-C2 610x10 258 PWB-A1 FL701 256 610 202 PWB-A4 202-14 C 237 202-15 202-13 202-2 202-10 202-11 202-6 202-12 202-21 202-18 D PWB-F 263 260(260-1, 260-2, 260-3, 260-4, 260-5, 260-6, 610x6 260-7, 260-8, 260-9, 260-10, 260-11) 202-3 249 202-9 202-20 202-17 606 622x2 IC901 Silicon 620x2 grease 620x3 606 x2 E 202-1 202-19 243 202-8 202-16 202-22 255 202-7 202-5 2
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CD-PC672 CD-PC672 259 611 208 A 208-3 208-2 601x2 208-1 612 234 230 B 226 SW3 229 C 229 227 229 233-3 601x2 233-2 233-1 233 233-4 D 201 614 228 CD MECHANISM 618 E 619 217 613 223 225 603 215 211 218 209 219 229 618 219 216 615 F 222 221 231 212 213 SW2 225 G 229x2 220 232 617x2 604 229 224 613 210 M3 238 214 H 616x4 PWB-B 604 613 1 PWB-D 229 2 3 4 Figure 11 CABINET EXPLODED VIEW (2/2) 66 – – 11 SOLM2 5 6
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CD-PC672 CP-C672 A TWEETER SP3(L-CH) SP4(R-CH) 908 C1,2 Capacitor RED B BK 902 RED BK WOOFER SP1(L-CH) SP2(R-CH) (with Capacitor C1,2) C 904 D SP3,4 905x2 907x2 E 905x2 F SP1,2 903 906x4 G TWEETER SP3(L-CH) SP4(R-CH) 901 C1,2 Capacitor 2.2µF,100V, Electrolytic (N.P.
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CD-PC672 CP-SW672 901 907 A 902 B C 903 D 905x4 SP1 E 906 F 904 RED BLACK G SP1 H 1 2 3 4 Figure 13 SPEAKER EXPLODED VIEW (2/3) – 13 68 – 5 6
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CD-PC672 904x4 GBOXS0022AWM1 905 A 904x4 B 903 901 902 C SP1 D 904x6 GBOXS0023AWM1 905 SP1,2 E F 903 901 902 SP1,2 G H 1 2 3 4 Figure 14 SPEAKER EXPLODED VIEW (3/3) – 69 14 – 5 6
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CD-PC672 PACKING OFF THE SET (For U.S.A. Only) Setting position of switches and knobs Tape Mechanism STOP UNIT Center Speaker Rear Speaker (L/R) GBOXS0022AWM1 GBOXS0023AWM1 Bottom Side SPAKP0013AWZZ Polyethylene bag 92L41-08-0350 Polyethylene Bag 92L41-08-0350 Polyethylene Bag Remote Control SPAKA0210AWZZ Packing Add.,(Left/Right) Bottom 92L41-05-0300 Packing Add.