Sharp CD-K477W Service Manual
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Sharp CD-K477W Service Manual

Sharp CD-K477W Service Manual

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Manufactured under license from Dolby Laboratories Licens-
ing Corporation.
DOLBY, the double-D symbol
trademarks of Dolby Laboratories Licensing Corporation.
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION ...................................................................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
OPERATION MANUAL ...................................................................................................................................................... 8
DISASSEMBLY ................................................................................................................................................................ 10
REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 13
ADJUSTMENT ................................................................................................................................................................. 14
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18
TYPES OF TRANSISTOR AND LED ................................................................................................................................ 18
BLOCK DIAGRAM ........................................................................................................................................................... 19
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 22
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 49
TROUBLESHOOTING ..................................................................................................................................................... 50
FUNCTION TABLE OF IC ................................................................................................................................................ 54
FL DISPLAY ..................................................................................................................................................................... 61
REPLACEMENT PARTS LIST/EXPLODED VIEW
All manuals and user guides at all-guides.com
SERVICE MANUAL
and "PRO LOGIC" are
CONTENTS
SHARP CORPORATION
- 1 -
CD-K477W
CP-K477, CP-SW477, CENTER(GBOXS0015AWM2)
and Surround (GBOXS0016AWM2) speaker system
Constibute CD-K477W
• 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-K477W
No.S8869CDK477W/
Page

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  • Page 1: Table Of Contents

    No.S8869CDK477W/ CD-K477W CP-K477, CP-SW477, CENTER(GBOXS0015AWM2) and Surround (GBOXS0016AWM2) speaker system Constibute CD-K477W • 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 Licens- ing Corporation.

  • Page 2: Safety Precaution For Service Manual

    All manuals and user guides at all-guides.com CD-K477W SAFETY PRECAUTION FOR SERVICE MANUAL WARNINGS THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES AGAINST EXPOSURE TO THE LASER BEAM.

  • Page 3: Specifications

    All manuals and user guides at all-guides.com CD-K477W SPECIFICATIONS General Compact disc player section CD-K477W Type: 3-disc multi-play compact disc Power source: AC 110/127/220/230-240 V, player 50/60 Hz Power consumption: 190 W Signal readout: Non-contact, 3-beam semi- Dimensions: Width; 270 mm (10-5/8") conductor laser pickup Height;...

  • Page 4: Names Of Parts

    All manuals and user guides at all-guides.com CD-K477W NAMES OF PARTS CD-K477W Front panel (CD) Disc Tray (CD) Disc Number Select Buttons (CD) Disc Skip Button (CD) Open/Close Button Dolby Pro Logic Indicator (CD) Disc Number Indicators (TAPE 2) Direction Indicators...
  • Page 5 All manuals and user guides at all-guides.com CD-K477W (TAPE 1) Cassette Compartment (TAPE 2) Cassette Compartment Rear panel CD Digital Output Socket Video/Auxiliary (Audio Signal) Input Sockets Span Selector Switch FM 75 Ohms Aerial Terminal Aerial Earth Terminal SW1/SW2/MW Aerial Terminal...
  • Page 6 All manuals and user guides at all-guides.com CD-K477W CP-K477 Front speaker Super Tweeter Tweeter Woofer Bass Reflex Ducts Speaker Terminals CP-SW477 Sub woofer Woofer Bass Reflex Ducts Speaker Terminals GBOXS0015AWM2 Centre speaker Woofer Speaker Wire GBOXS0016AWM2 Surround speaker Woofer Speaker Wire...
  • Page 7 All manuals and user guides at all-guides.com CD-K477W Remote control Remote Control Transmitter LED Surround Mode Selector Buttons Test Tone Button Sub Woofer Level Control Buttons Centre Level Buttons Surround Level Buttons Tuner control section Preset Up/Down Buttons CD control section...

  • Page 8: Operation Manual

    All manuals and user guides at all-guides.com CD-K477W OPERATION MANUAL SETTING THE CLOCK Press the ON/STAND-BY button to enter the stand-by mode. In this example, the clock is set for the 24-hour Press the CLOCK button. (0:00) system. Within 5 seconds, press the MEMORY button.
  • Page 9 All manuals and user guides at all-guides.com CD-K477W – 9 –...

  • Page 10: Disassembly

    All manuals and user guides at all-guides.com CD-K477W DISASSEMBLY Caution on Disassembly CD-K477W Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance: ( A1 ) x2 Top Cabinet ø3 x12mm 1.
  • Page 11 All manuals and user guides at all-guides.com CD-K477W (L1)x2 CD Switch PWB (F4) x2 Front Panel ø3x10mm Washer Front Panel (F2) x1 (L2)x1 (F3) x2 (M1)x3 (F3) x2 Display ø3x10mm (F2) x2 (L3)x12 (F1) x2 Headphones ø3x10mm (F4) x1 ø3x10mm...
  • Page 12 All manuals and user guides at all-guides.com CD-K477W ( T1 ) x4 CP-K477 ø3 x12mm Tweeter ( U1 ) x1 Front Panel ø2.6 x10mm (A2)x1 Shift Lever (A1)x1 CD Changer Mechanism Woofer CD Player Base CD Mechanism Be careful when installing the CD changer mechanism.

  • Page 13: Removing And Reinstalling The Main Parts

    All manuals and user guides at all-guides.com CD-K477W REMOVING AND REINSTALLING THE MAIN PARTS CD MECHANISM SECTION Perform steps 1, 2, 3,15,16,17 and 19 of the disassembly method to remove the CD mechanism. Loading / Up / Down Motor How to remove the loading motor (See Fig.

  • Page 14: Adjustment

    All manuals and user guides at all-guides.com CD-K477W ADJUSTMENT TUNER SECTION MECHANISM SECTION • Driving Force Check fL: Low-range frequency 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...
  • Page 15 All manuals and user guides at all-guides.com CD-K477W • FM RF Signal generator: 1 kHz, 40 kHz dev, FM modulated • FM Detection Test Stage Frequency Frequency Setting/ Signal generator: 10.7 MHz, FM sweep Instrument Display Adjusting Connection Frequency Frequency...
  • Page 16 All manuals and user guides at all-guides.com CD-K477W TEST MODE • Setting the test mode Any one of test mode can be set by pressing several keys as follows. <REC. PAUSE> + <DISC. SKIP> + <POWER> TEST: CD operation test •...
  • Page 17 All manuals and user guides at all-guides.com CD-K477W 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 C-ch and S-ch are in operative state, so that the SP output amplifier.

  • Page 18: Notes On Schematic Diagram

    All manuals and user guides at all-guides.com CD-K477W 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

    All manuals and user guides at all-guides.com CD-K477W Figure 19 BLOCK DIAGRAM (1/3) – 19 –...
  • Page 20 All manuals and user guides at all-guides.com CD-K477W B.P.F SO301 ANTENNA CF351 X351 BFT01 TERMINAL ICT01 FM IF FM IF AM IF TA7358AP TT01 CF302 FM FRONT END TUNE T351 CF352 FM IF IN TUNER MU LT02 LT01 IC303 VR351...
  • Page 21 All manuals and user guides at all-guides.com CD-K477W FLD01 RXD01 (AC) REMOTE TO CD UNIT FL DIPLAY SENSOR (AC) TUNER SD 45 47 71 73 50 52 TUNER MUTE SWD01 JOG SW ICD01 IX0234AW SWF02 SWD02 JOG SW SYSTEM SPAN SELECTOR.

  • Page 22: Schematic Diagram / Wiring Side Of P.w.board

    All manuals and user guides at all-guides.com CD-K477W LASER DRIVER 0.01 47/16 KTA1266 1/50 0.01 4.7K 0.001 4.7/50 CNS1B 2.5V FIN2 CNS1A FIN1 2.5V 2.5V FEBAL 2.5V FOSTA 2.5V TOSTA DGND C4 0.1/50 2.5V 2FREQ 2.5V TE– LASER 2.5V FSTA 2.5V...
  • Page 23 All manuals and user guides at all-guides.com CD-K477W CD SIGNAL 0.01 TEST1 DEFI EFLG µ-COM SUB-CODE SBSY INTERFACE XVSS 0V PDO LC78622K R51 3.3M X-TAL VVSS SERVO/SIGNAL GENERATOR XOUT CONTROL XVDD 0.047 1SS133 2K x8BIT 0.033 ISET 2.2V 0.022 1SS133...
  • Page 24 All manuals and user guides at all-guides.com CD-K477W GND(CD2) GND(CD1) GND(D) GND(D) +7.3V(CD) GND(D) +12V(M) +4.6V(D) +4.6V(D) +4V(µ-CO +12V(M) GND(µ-C COM1 RESET CG61 DATA1 RG11 0.022 CNSD01 SCK1 DG06 TO DISPLAY PWB 1SS133 P32 1-D RG23 CG07 22/25 RG05 10/100...
  • Page 25 All manuals and user guides at all-guides.com CD-K477W CD GND(D2) CD GND(D2) CD GND(D1) CD GND(D1) GND(D) GND(D) +7.3V(CD) +7.3V(CD) +12V(M) +12V(M) +4.6V(D) +4V(µ-CON) +4.6V(D) GND(µ-CON) SWF-MUTE QG02 DG03 1SS133 REAR-MUTE KTC3199 GR QG01 CENT-MUTE KRC102 M RG37 CG03 RG35...
  • Page 26 All manuals and user guides at all-guides.com CD-K477W MAIN PWB-A (2/4) RR74 FM SIGNAL – CR55 ICR15 CR56 10/50 (2/2) CR57 10/50 –10V CR63 0.022 RR75 –B 100K CR64 0.022 RP85 C CH CP48 CP50 RP52 0.1(ML) 0.1(ML) CP42 2.2/50 RP64 8.2K...
  • Page 27 All manuals and user guides at all-guides.com CD-K477W DIGITAL-OUT CNPR11 LR01 DOUT ICR11 2.2µH(DH) CNS99 GP1F38T +4.3V RR01 FROM CR01 CD SERVO PWB CR02 0.022 100/10 P23 11-D ZDR01 MTZJ3.3B CR03 0.001 RR78 RR74 RR76 RR77 CR60 0.0056 CR61 QR21 –...
  • Page 28 All manuals and user guides at all-guides.com CD-K477W PLAYBACK SIGNAL RECORD SIGNAL QL11 KTA1266 GR QL17 KRC104M RL11 RL12 TAPE MECHANISM ASSEMBLY 2.2K RL13 6.8K QL13 KRC104 M RL14 TAPE MICHANISM PWB–H QL12 QL14 KTA1273 Y FWM2 KTA1266 GR QL18...
  • Page 29 All manuals and user guides at all-guides.com CD-K477W MAIN PWB-A(3/4) TA2F/R SPEED TA_F/R SPEED TA_MOT2SW TA_MOT_SW M_12V M_12V TA_SOL TA_SOL QL19 KRC104 M T2_A_FP T2_A_FP TA_CAM_SW TA_CAM_SW M_GND M_GND T1_RUN DL11 T1_RUN 1SS133 RL24 3.3K T2_RUN 4.1V T2_RUN QL16 CL13...
  • Page 30 All manuals and user guides at all-guides.com CD-K477W MAIN PWB-A (4/4) RC59 100K RC60 100K RC61 100K RC62 100K 5.0V S-IN 5.0V R-IN 5.0V 3.9V L-IN 5.0V DATA AC-GND 3.9V 5.0V ENABLE L-OUT 5.0V CC62 DATA R-OUT 10/50 CC75 5.0V 3.9V...
  • Page 31 All manuals and user guides at all-guides.com CD-K477W TO MAIN PWB CNPU02 P25 12 - E FM SIGNAL KARAOKE PWB-J GND(D) R669 R670 C677 47/25 ZD631 MTZJ5.6B R668 1.2K R667 VOLTAGE 6.4V REGULATOR 5.4V Q631 KTC3203 Y C674 4.7V 47/25 C673 0.022...
  • Page 32 All manuals and user guides at all-guides.com CD-K477W FM SIGNAL RV91 JV91 HEADPHONE HP-LCH RV92 CV91 GND(A) HP-RCH CV92 GND(M) LV91 2.2µH(XH) H/P SW RD48 (YELLOW) LEDD01 QD01 FWV91 1.2K F-PLAY KL052UL WTV11 KRC107 M (YELLOW) LEDD02 RD49 TO SPEAKER...
  • Page 33 All manuals and user guides at all-guides.com CD-K477W FLD01 FL DISPLAY 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 –29(VP)
  • Page 34 All manuals and user guides at all-guides.com CD-K477W QV13 KTC3199 GR DV13 1SS133 RV27 CV11 CV13 RV17 CV25 2.2/50 2.2/50 0.022 ICV01-B RV31 RV29 0.2(1W) STK40727 QV18 CV17 KTC3199 G POWER AMP RV69 DV15 0.2(1W) 1SS133 CV21 RV35 2.2K RV21...
  • Page 35 All manuals and user guides at all-guides.com CD-K477W SPEAKER AMP.2 PWB-F2 TMV01 SPEAKER FM SIGNAL RLYV11 TERMINALS RELAY QV18 KTC3199 GR FRONT SPEAKER DV15 CV35 CV37 RV45 L-CH SS133 4.7(1/2W) RV41 QV19 – KTC3199 GR 8OHMS DV17 FRONT 1SS133 SPEAKER...
  • Page 36 All manuals and user guides at all-guides.com CD-K477W FM SIGNAL MW/SW1/SW2 SIGNAL R310 VD302-B KV1236Z23F T304 C306 Q309 SW2 ANT R311 D305 10P (UJ) 2SC2878 B C303 R312 100K 1SS135 0.022 D309 C309 1SS135 330P TC302 C304 C308 (UJ) R314 TRACKING 0.022...
  • Page 37 All manuals and user guides at all-guides.com CD-K477W TUNER PWB-D Q365 KRC107 M C343 15P (CH) R358 8.2K TP 302 R363 R351 1.5K 0K(B) L353 C371 R361 1/50 5.6K MUTING R350 Q353 2.7K KTC3199 GR C367 C372 R362 0.65V 1/50 1/50 5.6K...
  • Page 38 All manuals and user guides at all-guides.com CD-K477W TO SPEAKER TO SPEAKER AMP.1 PWB AMO.2 PWB P35 7-H P35 7-D CNPX12 CNPV12 CNS904 2 3 4 5 6 7 CN 1 2 3 4 5 6 7 BI904 2 3 4 5 6 7...
  • Page 39 All manuals and user guides at all-guides.com CD-K477W EAKER 5 6 7 CNS903 BI903 5 6 7 D990 KBU403 F993 C951 T3.15A L 250V 0.047 (ML) – C952 F994 0.047 T3.15A L 250V (ML) +26.0V –26.0V T991 POWER TRNSFORMER F995 D991 T6.3A L 250V...
  • Page 40 All manuals and user guides at all-guides.com CD-K477W TO SPEAKER AMP.1 PWB P47 11-B CFWX11 FROM TUNER PWB P46 1-B CNP303 FWP02 CNSF13 MAIN PWB-A 1 2 3 4 5 6 7 8 9 10 11 RR82 B C E...
  • Page 41 All manuals and user guides at all-guides.com CD-K477W TO SPEAKER AMP.2 PWB P47 8-A ER PWB CK52 CFWV11 RK64 RK62 RK65 FWP01 QK24 CNSF13 B C E RK60 CK62 RK61 6 7 8 9 10 11 QK09 QK25 RK03 RK04...
  • Page 42 All manuals and user guides at all-guides.com CD-K477W FLD01 CD11 CD10 CD09 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 2223 24 25 2 CD06 CD05 RE94 RXD01 REMOTE CONTROL SENSOR ICD01...
  • Page 43 All manuals and user guides at all-guides.com CD-K477W DISPLAY PWB-C1 FLD01 SWD43 RD44 16 17 18 19 20 21 2223 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 3940 41 42 43 44 45 46 47...
  • Page 44 All manuals and user guides at all-guides.com CD-K477W SOLENOID SOLM2 CD MOTOR PWB-K SLED MOTOR SENSOR PWB-J PICKUP IN T/T UP/ CNS3A CNS3B DISC NUMBER DOWN LOADING MOTOR SPINDLE MOTOR PICKUP UNIT(306) BIM5 CNS1A CNS1B OPEN/CLOSE MECHA UP CNS2A CNS2B...
  • Page 45 All manuals and user guides at all-guides.com CD-K477W CNSU02 C622 TO MAIN PWB CNPU02 C623 P40 4-H C620 C632 C621 D601 C627 C602 C626 IC601 C601 C615 C677 C634 C672 C673 R667 R601 R668 R602 C674 ZD631 KARAOKE PWB-L VR603...
  • Page 46 All manuals and user guides at all-guides.com CD-K477W C315 Figure 46 WIRING SIDE OF P.W.BOARD (7/9) – 46 –...
  • Page 47 All manuals and user guides at all-guides.com CD-K477W TO MAIN PWB P41 7-A CFWP01 FROM HEADPHONES TO FAN MOTOR P44 2-G P42 3-F FWV91 CNS901 FWP01 TO MAIN PWB P40 4-A CNPV11 CFWP02 1 2 3 4 5 B C E...
  • Page 48 All manuals and user guides at all-guides.com CD-K477W SW991 VOLTAGE SELECTOR POWER PWB-D 230-240V 220V (285) AC POWER 110V 127V SUPPLY CORD AC 110/127/220/230-240V 50/ 60Hz (242) (285) TO MAIN PWB FW901 D951 P40 5-H D952 WTP02 D953 D954 C959...

  • Page 49: Waveforms Of Cd Circuit

    All manuals and user guides at all-guides.com CD-K477W 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...

  • Page 50: Troubleshooting

    All manuals and user guides at all-guides.com CD-K477W TROUBLESHOOTING 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 51 All manuals and user guides at all-guides.com CD-K477W • When the CD tray fails to open or close. Is there following voltage input in specific state of ICF01 pin 93? Check the OPEN CLOSE SW and the wiring from the ICF01 pin 93 to the OPEN CLOSE SW.
  • Page 52 All manuals and user guides at all-guides.com CD-K477W • 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).
  • Page 53 All manuals and user guides at all-guides.com CD-K477W • 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.

  • Page 54: Function Table Of Ic

    All manuals and user guides at all-guides.com CD-K477W FUNCTION TABLE OF IC IC2 VHiLC78622K-1: Servo/Signal Control (LC78622K) (1/2) Terminal Name Input/Output Function Pin No. DEFI Input Input terminal of defect detection signal (DEF). (Connected to OV when not used.) Input For PLL Input terminal for test.
  • Page 55 All manuals and user guides at all-guides.com CD-K477W IC2 VHiLC78622K-1: Servo/Signal Control (LC78622K) (2/2) 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 56 All manuals and user guides at all-guides.com CD-K477W IC1 VHiLA9241M/-1: Servo Amp. (LA9241M) (1/2) Function Pin No. Port Name FIN2 Connection pin for photodiode of pickup. RF signal is generated through addition with FIN pin, and FE signal is generated through subtraction.
  • Page 57 All manuals and user guides at all-guides.com CD-K477W IC1 VHiLA9241M/-1: Servo Amp. (LA9241M) (2/2) Function Pin No. Port Name 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.
  • Page 58 All manuals and user guides at all-guides.com CD-K477W ICF01 RH-iX0235AWZZ:System Microcomputer (IX0235AW) Input/Output Pin No. Port Name Function P00-P01 Input/Output 8-Bit input/output port. Input/output can be specified in 4-bit units HOLD release input. Port 0 interrupt input 3-10 P10-P17 Input/Output 8-Bit input/output port.
  • Page 59 All manuals and user guides at all-guides.com CD-K477W ICD01 RH-iX0234AWZZ:System Microcomputer (IX0234AW) (1/2) Input/Output Pin No. Port Name Function P16-P17 Input/Output 8-Bit input/output port. Input/output can be specified in 1-bit units (2)* Dual-purpose function P16: BUZ output P17: Timer 1 output (PWM output)
  • Page 60 All manuals and user guides at all-guides.com CD-K477W ICD01 RH-iX0234AWZZ:System Microcomputer (IX0234AW) (2/2) Input/Output Pin No. Port Name Function 64-71 S32-S39 Input/Output Fluorescent charcater display tube (VFD)display controller Segment output Dual-purrpose function S32: High voltage withstand input port PE0 S33: High voltage withstand input port PE1...

  • Page 61: Fl Display

    All manuals and user guides at all-guides.com CD-K477W FLD01 : VVKBJ614GK/-1 FL Display (2G) (1G) – – – – – – – – – – – – – – – – – – – – – – – – –...

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