Table of Contents
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Illustration: CD-C471H
Manufactured under license from Dolby Laboratories Licens-
ing Corporation.
DOLBY, the double-D symbol
are trademarks of Dolby Laboratories Licensing Corporation.
SAFETY PRECAUTION FOR SERVICE MANUAL .......................................................................................................... 2
IMPORTANT SERVICE NOTES (U.K. ONLY) ................................................................................................................. 2
SPECIFICATIONS ............................................................................................................................................................ 3
NAMES OF PARTS .......................................................................................................................................................... 4
OPERATION MANUAL ..................................................................................................................................................... 6
DISASSEMBLY ................................................................................................................................................................. 7
REMOVING AND REINSTALLING THE MAIN PARTS .................................................................................................. 10
ADJUSTMENT ................................................................................................................................................................ 11
NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 18
TYPE OF TRANSISTOR AND LED ................................................................................................................................ 18
BLOCK DIAGRAM .......................................................................................................................................................... 19
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................ 22
WAVEFORMS OF CD CIRCUIT ..................................................................................................................................... 43
TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION) ............................................................................. 44
FUNCTION TABLE OF IC .............................................................................................................................................. 48
FL DISPLAY .................................................................................................................................................................... 58
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF METHOD (FOR U.K. ONLY)
SERVICE MANUAL
CP-C471H, CENTER(GBOXS0006AWM5)
and SURROUND(GBOXS0007AWM5) Speaker System Constitute
CD-C471H.
and "PRO LOGIC"
CONTENTS
SHARP CORPORATION
- 1 -
CD-C471H
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
CD-C471H
No. S5830CDC471H/
Page
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Summary of Contents for Sharp CD-C471H
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Page 1: Table Of Contents
CD-C471H. • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used. Illustration: CD-C471H Manufactured under license from Dolby Laboratories Licens- ing Corporation. DOLBY, the double-D symbol and "PRO LOGIC"... -
Page 2: Safety Precaution For Service Manual
CD-C471H SAFETY PRECAUTION FOR (FOR GERMANY) 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 I Requirements. -
Page 3: Specifications
CD-C471H FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS CD-C471H General Cassette deck section Power source: AC 230 V, 50 Hz Type: Compact cassette tape Power consumption: 112 W Frequency response:... -
Page 4: Names Of Parts
CD-C471H NAMES OF PARTS CD-C471H Front Panel 1. (CD) Disc Tray 2. (CD) Disc Number Selector Buttons 3. (CD) Disc Skip Button 4. (CD) Open/Close Button: 5. (CD) Play Indicator: 6. (CD) Repeat Indicator: 5 6 7 10 11 12 7. - Page 5 CD-C471H CD-C471H Rear Panel 1. CD Digital Output Socket 2. AC Power Input Socket 3. MW/LW Loop Aerial Input Socket 4. FM 75 ohms Aerial Socket 5. Video/Auxiliary (Audio Signal) Input Sockets 6. Sub Woofer Output Socket 7. Front Speaker Terminals 8.
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Page 6: Operation Manual
CD-C471H OPERATION MANUAL – 6 –... -
Page 7: Disassembly
CD-C471H DISASSEMBLY Caution on Disassembly CD-C471H Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure ( A1 ) x2 Top Cabinet excellent performance: ø3 x12mm 1. Take cassette tape and compact disc out of the unit. - Page 8 CD-C471H Front Panel ( D1 ) x1 ( L1 ) x1 Tuner ø3 x10mm ø3 x10mm ( D2 ) x1 CD Servo PWB Main PWB ( L2 ) x2 Back Board ( E1 ) x1 ø3 x10mm ( E2 ) x1...
- Page 9 CD-C471H CP-C471H CP-C471H STEP REMOVAL PROCEDURE FIGURE Front Speaker 1. Net ......(A1) x1 Tweeter 2. Fromt Panel ... (A2) x1 3. Screw ..... (A3) x2 Front Panel 4. Screw ..... (A4) x4 ( A2 ) x1 5. Screw ..... (A5) x2...
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Page 10: Removing And Reinstalling The Main Parts
CD-C471H REMOVING AND REINSTALLING THE MAIN PARTS CD MECHANISM SECTION Perform steps 1, 2, 3, 14 and 15 of the disassembly method Turntable Up/Down Motor to remove the CD mechanism. How to remove the turntable up/down motor (See Fig. 10-1) 1. -
Page 11: Adjustment
CD-C471H ADJUSTMENT TUNER SECTION MECHANISM SECTION fL: Low-range frequency • Driving Force Check fH: High-renge frequency Torque Meter Specified Value • AM IF/RF Play: TW-2412 Tape 1: Over 80 g Signal generator: 400 Hz, 30%, AM modulated Tape 2: Over 80 g... - Page 12 CD-C471H TEST MODE • Setting the test mode Any one of test mode can be set by pressing several keys as follows. <REC. PAUSE> + <CD> + <POWER> TEST: CD operation test • TEST mode Function — CD test mode Setting of TEST mode Indication of CD TST mode (Fig.12-1)
- Page 13 CD-C471H EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD Outline • Namely, two speakers are connected in parallel to one • In the normal mode of Pro Logic ON mode the amplifiers for amplifier. C-ch and S-ch are in operative state, so that the SP output •...
- Page 14 Descriptions of the PTY (Programme Type) codes, TP (Traffic System) Programme) and TA (Traffic Announcement) Eith the CD-C471H, you can search for and receive the RDS is a broadcasting service which a growing number of FM forrowing PTY, TP and TA signals.
- Page 15 CD-C471H – 15 –...
- Page 16 ON station(CH), without comparing field strength so can make a quick switching from TN—ON sta tion. Preset memory takes priority of switching TN—ON station. therefore ASPM is usefull not only for PTY search but also for rapid EON switching. Anyway CD-C471H EON is basi- cally stand-by and receiving method, along with the Guidelines for EON implementation.
- Page 17 CD-C471H EON summary notice for reference 1. EON-TI/PTY EON stand-by can be set, only when EON ind. lights up. While EON ind. goes out (NO EON STATION), EON stand-by can't be set. If the EON button is pressed, then “NO EON” is indication the display.
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Page 18: Notes On Schematic Diagram
CD-C471H NOTES ON SCHEMATIC DIAGRAM • The indicated voltage in each section is the one measured • Resistor: by Digital Multimeter between such a section and the chas- To differentiate the units of resistors, such symbol as K and sis with no signal given. -
Page 19: Block Diagram
CD-C471H Figure 19 BLOCK DIAGRAM (1/3) – 19 –... - Page 20 CD-C471H SO301 FM IF ANTENNA CF351 X351 AMP. TERMINAL FL701 FM IF FM IF FM FRONT END QT21 CF301 Q301 CF302 AM IF FE301 8 6 5 LOW PASS FM IF IN T351 L354 FILTER – MW/AM (AC) FM/AM ANTENNA...
- Page 21 CD-C471H VOLTAGE REGULATOR +12V Q609 SW704~708 8 6 5 –VP Q701 19 21 22 (AC) KEY MATRIX KEY5 –VP SW701~SW703 SW709~SW716 SW718,719,721,723,724 SW725,726,728~732 SW733,734,736~740 KEY0 IC701 IX0170AW DATA INPUT/OUTPUT MICROCOMPUTER CLOCK EXPANDER LED701~LED705 IC702 LED706~LED711 BU2092F RESET Q704 SYS STOP...
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Page 22: Schematic Diagram / Wiring Side Of P.w.board
CD-C471H 0.01 KTA1266 GR 1.5V 4.8V 0.01 4.2V 0.001 + – 2.4V FIN2 + – + – 2.4V FIN1 2.5V EFBAL – + – – 2.5V 2.5V FOSTA + – DGND TOSTA 2.5V 2.4V – 2FREQ + – 0.1/50 CNP1 2.4V... - Page 23 CD-C471H R57 1K CD SIGNAL R61 1K R62 1K R63 1K 0.01 64 63 62 59 58 57 55 54 53 52 51 50 EFLG 2.2V SBSY SUB-CODE U-COM INTERFACE DEF1 XVSS 2.1V X-TAL 3.3M XOUT 2.2V GENERATOR 2KX8 0.047...
- Page 24 CD-C471H TO CD SERVO PWB CNP12 CD SERVO PWB P23 7-G CNP11 P23 12-C TO MAIN TO MAIN SECTION(2/2) SECTION(2/2) CNS12 P27 12-D 1 2 3 4 5 6 CNS11 P27 12-D 1 2 3 4 5 6 19 20 21 22 23 24...
- Page 25 CD-C471H ERVO PWB CNP11 23 12-C 3 4 5 6 CNS11 3 4 5 6 BI601 MAIN PWB-A1(1/2) L-CH C671 R655 390P VIDEO-1 IN R654 C611 C670 47/16 390P R-CH R621 R650 2.2K C551 IC561 1.8K R657 R669 C613 270P...
- Page 26 CD-C471H QM05 KTA1266GR DRIVER QM02 KTA1273 RM11 MOTOR DR 8.2K TAPE MECHANISM PWB-F CM01 47/16 QM03 KTA1271Y TAPE FWM2 FWM1 DRIVER SPEED VRM1 MOT L MOT L 3.3K(B) MOT H MOT H TAPE MOT +B MOT +B MOTOR – PHM1...
- Page 27 CD-C471H MAIN PWB-A1(2/2) RM12 QM02 KTA1273Y MOTOR DRIVER TA_MOT_H/L RM06 2.2K TA_MOT_SW QM03 TA1271Y RM07 DRIVER M_12V RM09 2.2K TA_PUL RM08 T2_A_FP TA_CAM_SW D_GND T1_RUN T2_RUN RM10 1.2K T2_B_FP D_5V DM03 1SS133 REC/PB T1/T2 TO MAIN SECTION P24 2/4/6-A PB_MUTE...
- Page 28 CD-C471H FL701 9 8 7 6 5 41 40 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 Q701 KTC3199 GR –B...
- Page 29 CD-C471H RD07 RD06 RD05 RD04 5.6K 3.9K 2.2K FW701 SW708 SW707 SW706 SW705 SW704 DISC 3 DISC 2 DISC 1 OPEN DISC /CLOSE SKIP DISPLAY PWB-A3 R749 FW701-1 RD01 RD02 RD03 1.2K 1.8K R779 SW701 SW702 SW703 R780 1.8K TIMER...
- Page 30 CD-C471H 2 Ch IC901 STK40704 POWER AMP. R921 C923 C915 120P 120P C904 C916 C911 R912 10/50 100/50 C912 C907 100/50 10/50 R913 C901 R905 1/50 C903 H:ON R907 1/50 L:OFF 30.6V 30.7V R914 3.8V Q901 KTA1268 GR R911 0.3V...
- Page 31 CD-C471H FM SIGNAL R969 (1/2W) C978 47/50 D903 6.4V 1SS133 M901 FAN MOTOR R968 R967 L903 0.29µH F901 L901 T4A L 250V 0.29µH C934 C936 F902 R943 R945 R947 R948 T4A L 250V H:ON (ML) (ML) L:OFF C935 C937 C947...
- Page 32 CD-C471H VD301-1 R319 MW ANT. KV1236Z23F 100K C332 0.022 T302 C343 T301 C342 Q302 C302 VR351 R358 KTC3199 GR 0.022 0.001 10K(B) 8.2K C339 (0.7V) FM MUTE SHASSIS LEVEL L353 (CH) R331 LW ANT. 5.6K D301 1SS133 R323 R324 VD301-2...
- Page 33 CD-C471H RT34 QT21 KTC3199 GR TUNER PWB-H 5.2V (0V) 2.6V (0V) CT37 0.022 (0V) RT37 RT36 RT35 220K 220K 220K RT51 1K X351 RT52 1K 456KHz L354 RT26 RT53 1K RT30 R363 RT28 RT54 1K 2.2K C371 R361 1/50 CT28...
- Page 34 CD-C471H IC201 IC501 IC601 IC701 PIN VOLTAGE PIN VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE VOLTAGE NO. VOLTAGE NO. VOLTAGE VOLTAGE 2.4V 2.5V 4.9V 4.7V –28.4V 2.4V 2.5V 4.9V 4.9V 4.7V –28.4V 2.5V 5.4V 4.7V 4.9V –28.4V 4.9V 2.5V 2.5V 4.9V...
- Page 35 CD-C471H DISPLAY PWB-A2 COLOR TABLE JK700 C735 HEAD PHONE SW710 TUNER BROWN SW709 SW711 SW712 R781 (BAND) TAPE VIDEO/AUX RD(R) R780 FLAT CABLE(263) C734 R749 RD08 RD09 RD10 ORANGE R779 YELLOW GREEN R791 BLUE R731 R792 VIOLET GRAY C721 WH(W)
- Page 36 CD-C471H C570 D557 D558 C569 C552 (245) C554 R575 LUG1 CNS803 TO TAPE R565 MECHANISM R563 R574 C692 FLAT CABLE(263) C556 R561 R569 R570 R568 R693 C555 R674 R562 R694 R560 C551 C553 R564 R566 C698 R572 R690 Q674 E C B...
- Page 37 CD-C471H TO POWER PWB P40 2-D CNP803 MAIN PWB-A1 C454 CNS803 R666 R627 C659 C456 C453 C655 R663 R456 R633 R455 R677 Q676 R635 R453 R638 R454 Q201 R630 C658 C452 R674 C662 R632 C451 R634 C698 C656 R626 C455...
- Page 38 CD-C471H TO MAIN PWB P36 1-E TAPE MOTOR WTM1 FWM1 TAPE MECHANISM PWB-F SWM4 SWM3 VRM1 REC RVS REC FWD TAPE SPEED CNPM1 FWM2 CNPM2 SWM5 F. A. S PHM1 SWM6 SOLENOID SOLM1 TAPE 1 TAPE 2 PLAYBACK HEAD(254-8) RECORD/PLAYBACK/ERACE HEAD(254-9)
- Page 39 CD-C471H CNS5 MECHA UP DISC NUMBER SENSOR PWB-E OPEN/CLOSE T/T UP/DOWN LOADING CNS10 TAPE SOLENOID SPEED SOLM2 CNPM2 SWM5 F. A. S CD MOTOR PWB-D SLED MOTOR PICK UP IN CNS3A CNS3B DISC MOTOR CD SERVO PWB-C B C E...
- Page 40 CD-C471H POWER PWB-B ZD801 R804 R803 DZ802 Q801 C804 R802 R806 R801 R805 D806 D809 D808 D803 D807 D805 C813 D804 C805 C806 CHASSIS CNP802 Q827 C824 R837 C825 C827 C820 C810 C808 C807 C809 C831 D802 CNS803 D801 MAIN PWB...
- Page 41 CD-C471H M901 FAN MOTOR CNS804 T801 POWER TRANSFORMER CNP801 R966 D903 R964 L801 COLOR TABLE 4 3 2 1 BROWN RD( R) ORANGE YELLOW GREEN SO801 BLUE C977 C934 VIOLET C935 GRAY R934 R937 WH( W) WHITE CNP804 BLACK PINK...
- Page 42 CD-C471H TUNER PWB-H CT23 RT30 RT29 C302 RT32 RT37 RT28 RT33 RT36 RT34 RT35 R366 CT37 E C B XT21 Q354 CT26 Q353 R377 E C B LT22 SHASSIS R361 C371 CNP303 C374 R370 C373 X351 C368 R357 TO MAIN PWB...
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Page 43: Waveforms Of Cd Circuit
CD-C471H WAVEFORMS OF CD CIRCUIT STOP PLAY FOCUS SERCH 0.5ms 0.50 V 10.0 V IC1 20 F.E 0.5ms 10.0 V 0.5ms 5.0 V 0.50 V IC1 54 DRF 0.5ms 1.00 V PLAY 0.5ms NORMAL DISC 1.00 V TN0=01 20ms 1.00 V 0.5ms... -
Page 44: Troubleshooting (Cd Changer Control / Cd Section)
CD-C471H 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. - Page 45 CD-C471H • When the CD tray fails to open or close. Check the OPEN CLOSE SW and the wiring from the IC701 Is there following voltage input in specific state of IC701 pin 53? pin 53 to the OPEN CLOSE SW.
- Page 46 CD-C471H • Playback can only be performed when a disc is loaded. Check the laser diode driver. Is the Focus servo active? (Can you hear it working?) Check the area around IC1(16) - (21) (focus servo circuit). Does the DRF signal change from "L" to "H"? If the disc is not turning, the DRF Check the spin system.
- Page 47 CD-C471H • Checking the spin system. Play operation is performed without disc. The turntable rotates a little. The spin driver circuit is normal. Check the periphery of IC1 pins 23 to 27, pin 39, and pin 40, IC2 The turntable fails to rotate or rotates at high speed.
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Page 48: Function Table Of Ic
CD-C471H FUNCTION TABLE OF IC IC2 VHiLC78622K-1:Servo/Signal Control(LC78622K) (1/2) Terminal Name Input/Output Pin No. Function DEFI Input Input terminal of defect detection signal (DEF). (Connected to OV when not used.) Input For PLL Input terminal for test. Pull-down resistor is integrated. Surely connected to 0V. - Page 49 CD-C471H IC2 VHiLC78622K-1:Servo/Signal Control(LC78622K) (1/2) Terminal Name Input/Output Pin No. Function Output Output terminal of subcodes P, A, R, S, T, U and W. SFSY Output Output terminal of synchronous signal of subcode frame. It drops when subcode stands by.
- Page 50 CD-C471H IC1 VHiLA9241M/-1:Servo Amp.,(LA9241M) (1/2) Function Port Name Pin No. FIN2 Connection pin for photodiode of pickup. RF signal is generated through addition with FIN pin, and FE signal is generated through subtraction. FIN1 Connection pin for photodiode of pickup.
- Page 51 CD-C471H IC1 VHiLA9241M/-1:Servo Amp.,(LA9241M) (2/2) Function Port Name Pin No. Micro computer command clock input pin. Micro computer command data input pin. Micro computer command chip enable input pin. (DETECT RF) RF level detection output. (Focus Serch Select) Pin to switch focus search mode. (± search/+ search for reference voltage) VCC2 VCC pin for servo system and digital system.
- Page 52 CD-C471H IC201 RH-iX0171AWZZ:System Microcomputer (IX0171AW) (1/2) Pin No. Terminal Name Input/Output Function ———— Output ————— REC/PB — Record/Playback selection signal ———— Output ————— CD MUT Output CD MUT signal CD RES Output CD DSP RESET signal CD SL- Output Slide return signal...
- Page 53 CD-C471H IC201 RH-iX0171AWZZ:System Microcomputer (IX0171AW) (2/2) Pin No. Terminal Name Input/Output Function — Positive power supply CD O/C SW Input CD open-close switch input DISC No. SW Input CD turntable position detection input CD U/D SW Input CD mechanism UP/DOWN chucking detection input...
- Page 54 CD-C471H IC701 RH-iX0170AWZZ:System Microcomputer (IX0170AW) (1/2) Function Pin No. Port Name Terminal Name Input/Output P94/FIP6-P90/FIP2 G06-G02 Output FL display tube grid drive P81/FIP1,P80/FIP0 G01,G00 Output FL display tube grid drive — Positive power supply P27/SCK0 B CLK Output B serial clock output...
- Page 55 CD-C471H IC701 RH-iX0170AWZZ:System Microcomputer (IX0170AW) (2/2) Function Pin No. Port Name Terminal Name Input/Output VLOAD VLOAD — Negative power supply for FL drive To be connected to -30V 72-76 P105/FIP15-P101/FIP11 S04-S00 Output FL display tube segment drive P100/FIP10 Output FL display tube grid drive...
- Page 56 CD-C471H IC601 VHiLC75396N-1:Audio Processor (LC75396N) Function Terminal Name Pin No. 1-3* RF1C1-RF1C3 Terminal to connect capacitor of filter configuration for equalizer F1 band Connect the capacitor between LF1C1(RF1C1) and LF1C2(RF1C2) between LF1C2 (RF1C2) and LF1C3(RF1C3). RF2C1-RF2C3 Terminal to connect capacitor of filter configuration for equalizer F2 band Connect the capacitor between LF2C1(RF2C1) and LF2C2(RF2C2) between LF2C2 (RF2C2) and LF2C3(RF2C3).
- Page 57 CD-C471H ICT21 VHiLC72720/-1:RDS Decorder (LC72720) Pin No. Terminal Name Input/Output Function VREF Output Reference voltage output (Vdda/2) MPXIN Input Base band (multiplex) signal input Vdda — Analog system power supply (+5V) Vssa — Analog system ground FLOUT Output Sub-carrier input (comparator input)
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Page 58: Fl Display
CD-C471H IC3 VHiM56748FP-1: Focus/Tracking/Spin/Slide Driver (M56748FP) Vref-in Stand Vref-in Standby Vref-out SS.GND Vref-out Standby Gain1 Gain4 Gain1 Gain4 Vctl1(–) Vctl4(–) VM1(–) VM4(–) VM1(–) VM4(–) VM1(+) VM4(+) VM1(+) VM4(+) VM2(+) VM3(+) VM2(+) VM3(+) VM2(–) VM3(–) VM2(–) VM3(–) Vctl2(–) Vctl3(out) Vctl3(out) Gain2 Vctl3(–) - Page 59 E Correction of Service Manual D Korrektur der Service Anleitung F Correction du Manuel de Service Model SERIAL No. ( NEW ) QUANTITY ( OLD ) MODEL ITEM CD-C451H ------------------------ ------------------------ CD-C471H ------------------------ ------------------------ CD-C471W ------------------------ ------------------------ CD-C492 ------------------------ ------------------------ CD-C492C General E We inform you that there is a printing error in the parts list of Service Manual as follows.
- Page 60 Date : Mar. 19, 1999 CD Stereo : CD-C471H/C471W EAA-915 Title E Correction of Service Manual D Korrektur der Service Anleitung F Correction du Manuel de Service Model SERIAL No. ( NEW ) QUANTITY ( OLD ) MODEL ITEM CD-C471H...
- Page 61 CD-C471W PARTS CODE DESCRIPTION F804 92LFUSE-T402-E Fuse,T4AL 250V F901 92LFUSE-T402-E Fuse,T4AL 250V F902 FM SIGNAL R803 R802 D806 D803 F901 T4A L 250V C936 F902 T4A L 250V (ML) C937 (ML) R937 CNP802 C944 C942 1000/25 47/50 26.2V – R944 R941 14.9V C949...
- Page 62 New type cannot be used in place of current type. in use. C: Current type cannot be used in place of new type. F : Others. New type can be used in place of current type. Blue SHARP CORPORATION Audio-Visual Systems Group Q.R.C.C SC•SL•SG•SK•SA•SZ•EX...