Sharp CD-K491W Service Manual
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Sharp CD-K491W Service Manual

Mini component system
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Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic" and the double-D symbol are trademarks
of Dolby Laboratories. Confidential Unpublished Works.
©1992-1997 Dolby Laboratories, Inc. All rights reserved.
QSOUND and the QLogo are registered trademarks of
QSound Labs, Inc.
QSound is protected under US Patent Nos. 5,105,462 and
5,208,860 and foreign counterparts.
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION ..................................................................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
OPERATION MANUAL ...................................................................................................................................................... 7
DISASSEMBLY .................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 11
ADJUSTMENT ................................................................................................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 16
TYPES OF TRANSISTOR AND LED ................................................................................................................................ 16
BLOCK DIAGRAM ........................................................................................................................................................... 17
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 22
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 52
TROUBLESHOOTING ..................................................................................................................................................... 53
FUNCTION TABLE OF IC ................................................................................................................................................ 57
FL DISPLAY ..................................................................................................................................................................... 68
REPLACEMENT PARTS LIST/EXPLODED VIEW
SERVICE MANUAL
CONTENTS
SHARP CORPORATION
- 1 -
CD-K491W
CD-K491W mini component system consisting of CD-K491W
mini component system, CP-K491, CP-SW491, centre
(GBOXS0010AWM3) and surround (GBOXS0011AWM3)
speaker system.
• 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-K491W
No.S0883CDK491W/
Page

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Summary of Contents for Sharp CD-K491W

  • Page 1: Table Of Contents

    CD-K491W SERVICE MANUAL No.S0883CDK491W/ CD-K491W CD-K491W mini component system consisting of CD-K491W mini component system, CP-K491, CP-SW491, centre (GBOXS0010AWM3) and surround (GBOXS0011AWM3) speaker system. • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be Manufactured under license from Dolby Laboratories.

  • Page 2: Safety Precaution For Service Manual

    CD-K491W 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

    CD-K491W FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS CD-K491W General Compact disc player section Power source: AC 110/127/220/230 - 240 V, Type: 3-disc multi-play compact disc 50/60 Hz player Power consumption:...

  • Page 4: Names Of Parts

    CD-K491W NAMES OF PARTS CD-K491W Front panel 1. Disc Tray 2. Disc Number Selector Buttons 3. Disc Skip Button 4. Open/Close Button 5. Left Front Speaker Indicator 6. LFE Indicator 7. Centre Speaker Indicator 8. Right Front Speaker Indicator 5 6 7 8 9.
  • Page 5 CD-K491W 45 46 47 48 49 50 51 52 44. Clock Button 45. Sleep Button 46. Reverse Mode Button 47. CD Pause Button 48. Jog Dial 49. (CD/TAPE) Stop Button 50. Record Pause Button 51. Menu Button 52. Item Button 53 54 55 56 57 58 59 60 61 53.
  • Page 6 CD-K491W CP-K491 CP-SW491 Sub Woofer Front speakers 1. Woofer 1. Super Tweeter 2. Bass Reflex Duct 2. Tweeter 3. Speaker Terminals 3. Woofer 4. Bass Reflex Duct 5. Speaker Terminals GBOXS0011AWM3 Surround speakers GBOXS0010AWM3 1. Tweeter Centre speaker 2. Woofer 1.

  • Page 7: Operation Manual

    CD-K491W OPERATION MANUAL – 7 –...

  • Page 8: Disassembly

    CD-K491W DISASSEMBLY CD-K491W Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure ( A1 ) x2 Top Cabinet ø3 x12mm excellent performance: 1. Take cassette tape and compact disc out of the unit.
  • Page 9 CD-K491W CD Switch PWB (M1)x2 (D3) x4 Dolby PWB ø3x10mm Front Panel (G2) x1 Washer (G4) x2 (D1) x1 ø3x10mm (D1) x1 (M2)x1 Front Panel (G3) (N1)x3 ø3x10mm (F1) x1 (G3) x2 ø3 x10mm Display (G1) x2 (M3)x12 (C4) x1 ø3x10mm...
  • Page 10 CD-K491W CP-K491 ( U1 ) x4 ø3 x12mm ( V1 ) x1 Tweeter ø2.6 x10mm Baffle Board (A2)x1 Shift Lever (A1)x1 CD Changer Mechanism Woofer CD Player Base CD Mechanism Be careful when installing the CD changer mechanism. Install the CD changer mechanism on the CD player base after the shift lever has been set in the highest position.

  • Page 11: Removing And Reinstalling The Main Parts

    CD-K491W REMOVING AND REINSTALLING THE MAIN PARTS CD MECHANISM SECTION Perform steps 1, 2, 3,16, 17, 18, 19 and 20 of the disassembly method to remove the CD mechanism. Loading/Up/ Down Motor How to remove the loading motor Motor (See Fig. 11-1) 1.

  • Page 12: Adjustment

    CD-K491W 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 Tape 2: Over 80 g...
  • Page 13 CD-K491W • 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 Setting/ Test Stage Instrument Parts Display Adjusting...

  • Page 14: Test Mode

    CD-K491W TEST MODE • Setting the test mode Any one of test mode can be set by pressing several keys as follows. <CD> + <EQ> + <POWER> TEST: CD operation test • TEST mode Function — CD test mode Setting of TEST mode Indication of CD TST mode (Fig.
  • Page 15 CD-K491W DOLBY DIGITAL When you connect this unit to a DVD player which is playing DVD 1 DVD 2 a disc with the trademark, you can enjoy /VCR 1 /VCR 2 realistic, powerful sound by playing back the recorded signal...

  • Page 16: Notes On Schematic Diagram

    CD-K491W 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 17: Block Diagram

    CD-K491W Figure 17 BLOCK DIAGRAM (1/5) – 17 –...
  • Page 18 CD-K491W ICA12 NJM4580M LOW PASS FILTER & DIFFERENTIAL AMP 23 24 ANAROG RCH AINR+ AINR– DEM0 AINL+ DEM1 AINR– A-GND AINL– MAIN SECTION AINL– CLK2L/R SL/SR IN ANAROG LCH D-OUT AINL+ LS OUT ICA11 A-GND RS OUT NJM4580M LOW PASS FILTER &...
  • Page 19 CD-K491W TO MAIN SECTION +B12 DEM0 DEM1 LRCK CLK2L/R BICK FL/FR 10 11 21 A-GND D3-GND +B12 D3-GND DEM0 DEM1 95 66 19 29 37 44 53 65 68 71 LRCK BICK ICA18 ZR38600 CENTER CENTER CENTER DOLBY AC-3 /5.1...
  • Page 20 CD-K491W FM BAND PASS FILTER SO301 ANTENNA BFT01 TERMINAL FM IF FM IF ICT01 TA7358AP TT01 CF302 AM IF AM IF FM FRONT END CF352 T351 FM IF IN IC303 LT01 LT02 LA1832 VR351 FM MUTE LEVEL FM IF DET./FM MPX./AM IF...
  • Page 21 CD-K491W (AC) FD01 FL DIPLAY (AC) RXD01 REMOTE SENSOR TO DOLBY SECTION 4 5 4 7 7 1 7 3 ICD01 XD01 IX0233AW SYSTEM KEY MATRIX MICROCUMPUTER SWD03~SWD06 SWD12~SWD17 SWD23, SWD26~SWD43 KEY IN SWD50~SWD54 15 89 18 46 72 90...

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

    CD-K491W 47/16 0.01 1.5V 4.8V 1/50 4.2V KTA1266 GR CNS1B 0.001 VCC1 CNS1A – 2.4V FIN2 – + – + 2.5V 2.4V FIN1 EFBAL – + – + – + 2.5V FOSTA 2.5V – + DGND TOSTA 2.5V 2.4V – + 2FREQ –...
  • Page 23 CD-K491W CD SERVO PWB-B R57 1K R58 1K R59 1K R61 1K R62 1K R63 1K 0.01 EFLG 2.2V µ-COM SBSY SUB-CODE INTERFACE 16.934MHz DEF1 XVSS 2.1V 3.3M X-TAL XOUT 2.2V 0.047 GENERATOR 2Kx8 VVSS 4.8V XVDD 1.9V ISET MUTER 4.8V...
  • Page 24 CD-K491W GND(CD2) GND(CD1) GND(D) +7.3V(CD) GND(D) +12V(M) GND(D) +4.6V(D) DISPLAY PWB +4.6V(D) +4V(µ-CON) P36 1-C +12V(M) GND(µ-CON) CNSD01 COM1 RESET DATA1 SCK1 RG11 RG23 10/100 DH06 1SS133 9/50 SWF02 RF80 SPAN SELECTOR RG24 RF81 MIC_DET FRNT_RLY RF50 1K RF82 H/P SW...
  • Page 25 CD-K491W CD GND(D2) –B –15V CD GND(D1) GND(A) GND(D) +12V(A) +7.3V(CD) GND(D) +12V(M) +4.6V(D) +4.6V(D) SWF-MUTE REAR-MUTE CENT-MUTE –B S-MUTE –B DG03 AMP CONT 1SS133 RESET SW RLY(4) RG33 QG01 CG03 RG35 REAR RLY(3) 3.3/50 RESET KRC102 M POINT CENT RLY(2)
  • Page 26 CD-K491W PLAYBACK SIGNAL RECORD SIGNAL QL11 KTA1266 GR TAPE MECHANISM ASSEMBLY DRIVER QL17 KRC104 M RL11 SWITCHING RL12 RL13 QL13 2.2K 6.8K KRC104 M SWITCHING RL14 TAPE SV MECHA. QL12 4.0V KTA1266 GR DRIVER FWM2 TAPE QL14 TAPE SPEED KTA1273 Y...
  • Page 27 CD-K491W MAIN PWB-A(2/5) QL17 C104 M TCHING 4.0V TA-F/R SPEED TA–F/R SPEED QL18 KRC104 M TA-MOT-SW TA-MOT-SW QL19 KRC104 M DRIVER M-12V M-12V TA-SOL TA-SOL T2-A-FP T2-A-FP TA-CAM-SW TA-CAM-SW M-GND M-GND T1-RUN DL11 T1-RUN 1SS133 T2-RUN T2-RUN 4.1V QL16 CL13...
  • Page 28 CD-K491W RP53 CP58 100K 0.068 RP51 CP41 RP54 CP44 2.2/50 100K 0.001 CP42 QP16 RP52 2.2/50 KTC319 S.W.MUTE CENTER MUTE TO CD SERVO PWB TO DOLBY PWB P23 11-D P34 1-A CNS99 CNSA11 QP14 CNPR11 CNPR12 KTC3199GR CP31 CP32 0.001 0.001...
  • Page 29 CD-K491W MAIN PWB - A ( 3 / 5 ) QP15 KTC3199GR FM SIGNAL CP47 RP62 0.001 5.6K FWP02 OUT6 CP53 OUT6 RELAY4 0.001 RELAY4 OUT4 OUT4 GND(M) RP70 OUT5 TO SPEAKER QP16 5.6K OUT5 AMP.1 PWB KTC3199GR +12V(M) P38 1-F...
  • Page 30 CD-K491W TO MAIN SECTION P25 8-D 67 68 69 70 71 72 73 54 55 58 56 57 76 76 57 56 58 55 54 77 28 19 18 86 18 87 QZ01,QZ02: VOLTAGE REGULATOR –B –B RZ85 RZ86 CZ64...
  • Page 31 CD-K491W CQ08 0.082 (ML) CQ07 CQ14 0.012(ML) 0.022 MSC5 CQ06 MSC4 0.001(ML) CQ04 CQ20 RROUT RRIN ICQ01 2.2/50 2.2/50 CQ19 CQ03 RLOUT RLIN 2.2/50 2.2/50 CQ16 QS7777PF CQ05 COUT SUBIN 2.2/50 CQ18 CQ02 2.2/50 FROUT 2.2/50 Q-SOUND 2.2/50 CQ17 FRIN FLOUT 2.2/50...
  • Page 32 CD-K491W TO MAIN PWB CNPU02 P25 12 - D CNSU02 FM SIGNAL KARAOKE PWB-L 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 C672 47/25 DIGITL ECHO...
  • Page 33 CD-K491W R376 Figure 33 SCHEMATIC DIAGRAM (12/20) – 33 –...
  • Page 34 CD-K491W CD D-IN TO MAIN PWB P28 3-C FM SIGNAL ICA15 CNPR12 74HCU04F INVERTER CA32 LA14 10µH JA11 DVD2 IN COAXIAL ICA16 74HC153F INVERTER DIGITAL-IN CA30 DVD1 IN OPTICAL ICA14 CA47 GP1F38 R 0.001 TERMINAL RA48 CA26 CA25 RA50 3.3V 10/16 4.0V...
  • Page 35 CD-K491W ICA17 TC7WU04U RA03 DUAL2–INPUT NAND GATE RA04 CA58 CA54 220/6.3 18P(CH) CA56 0.047 CA57 10/16 ICA19 AK4321 CA52 10/16 4.6V 1 2 3 4 4.6V DVDD CA59 CA55 4.6V VREF DVSS 0.001 22P(CH) AVSS CA60 2.2V AVDD 3.9V 2.3V...
  • Page 36 CD-K491W DISPLAY PWB-C1 FLD01 FM SIGNAL JV91 HEADPHONES RV91 FWV91 HP-LCH RV92 GND(A) HP-RCH LV91 CV92 H/P SW 2.2µH 100P –B GND(M) QD01 RD48 LEDD01 (YELLOW) KRC107 M 1.2K KL052UL F-PLAY RD49 QD02 HEADPHONES PWB-C3 (YELLOW) LEDD02 1.2K KRC107 M...
  • Page 37 CD-K491W 11 12 13 14 16 17 18 19 20 21 23 24 25 26 27 29 30 32 33 34 35 36 37 39 40 41 42 43 44 45 47 48 49 50 51 52 53 54 55 56 57 –B...
  • Page 38 CD-K491W QV13 KTC3199 GR DV13 1SS133 RV27 4.0V CV11 CV13 RV17 CV25 2.2/50 2.2/50 ICV01-B 0.022 RV29 QV18 3CH AF 0.2(1W) KTC3199 GR CV17 POWER AMP. STK40727 4.0V RV69 DV15 0.2(1W) 36.5V 1SS133 CV21 RV23 4.0V RV35 FWP01 2.2K RV21...
  • Page 39 CD-K491W SPEAKER AMP.2 PWB-F2 FM SIGNAL TMV01 SPEAKER TERMINAL RLYV11 QV18 CV37 KTC3199 GR 0.022 CV35 CV43 0.022 4.0V FRONT-L CV31 DV15 0.001 0.1(ML) 8 OHMS 1SS133 RV41 – CV41 CV39 CV33 QV19 0.022 0.022 0.1(ML) 4.0V KTC3199 GR CV38 0.022...
  • Page 40 CD-K491W TO SPEAKER TO SPEAKER AMP.2 PWB AMP.1 PWB P39 7-D P39 7-H CNPX12 CNPV12 CNS903 CNS904 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7...
  • Page 41 CD-K491W POWER PWB - D T991 POWER TRANSFORMER F995 T8A L 250V C954 0.22(ML) C956 0.22(ML) F996 T8A L 250V –B F991 T2.5A L 250V D992~D995 2A02 C957 D992 D995 0.047 (ML) F997 C958 T2.5A 0.047 D993 D994 L 250V...
  • Page 42 CD-K491W TO SPEAKER AMP.1 PWB P50 2-A CFWX11 TO SPEAKER AMP P50 5-A TO TUNER PWB CFWV11 P48 1-B CNP303 FWP02 CNSF13 2 3 4 5 6 7 8 9 10 11 MAIN PWB-A RP62 QG04 B C E QR12...
  • Page 43 CD-K491W TO SPEAKER AMP.2 PWB P50 5-A CK52 CFWV11 RK62 QK24 FWP01 B C E RK63 RK69 CK60 RK60 QK14 CK62 RK61 1 2 3 QK25 CFWP02 RK28 CK36 13 11 9 7 5 3 1 12 10 8 6 4 2...
  • Page 44 CD-K491W CD11 CD09 CD10 CD06 CD05 RXD01 REMOTE SENSOR ICD0 SWD01 VOLUME LD01 SWD03 X-BASS RD53 QD06 RD51 LEDD09 LEDD12 QD04 LEDD10 QD03 RD52 RD50 SWD04 PRE EQ QD02 SWD23 Q-SOUND SWD27 QD01 RE27 PHANTOM RD48 CD29 SWD16 LEDD02 REC/PAUSE...
  • Page 45 CD-K491W DISPLAY PWB-C1 FLD01 SWD43 RD44 RD43 RD42 RE51 RD41 RE41 SWD42 TUNER BAND RE31 ICD01 RD64 SWD41 TAPE1/2 RE01 RD38 RD34 RE11 RD65 CD02 XD01 RD37 LEDD09 LEDD08 LEDD15 LEDD14 LEDD19 LEDD18 SWD40 DVD/ VIDEO2 LEDD10 LEDD16 LEDD17 RD29...
  • Page 46 CD-K491W DOLBY PWB- G (TOP VIEW) FWA02 CFWU02 FWA01 TO MAIN PWB CFWU01 P42 3-H TO MAIN PWB P42 4-H ZDA01 CA96 ZDA02 CA95 CB16 LA11 CA73 CA79 LA18 CA80 CA77 LA12 CA63 CA58 CA64 CA50 CA62 RB09 LA17 DA13...
  • Page 47 CD-K491W SOLENOID SOLM2 CD MOTOR PWB-K SLED MOTOR SENSOR PWB-J PICK UP IN T/T UP/ CNS3A CNS3B DISC NUMBER DOWN LOADING SPINDLE MOTOR PICKUP UNIT(306) BIM5 CNS1A CNS1B OPEN/CLOSE MECHA UP CNS2A CNS2B 9 8 7 6 5 4 3 2 1...
  • Page 48 CD-K491W C315 Figure 48 WIRING SIDE OF P.W.BOARD (710) – 48 –...
  • Page 49 CD-K491W KARAOKE PWB-L CNSU02 C622 TO MAIN PWB CNPU02 C623 P42 6-H C620 C632 C621 D601 C627 C602 C626 IC601 C601 C615 C677 C634 C672 C673 R667 R601 R668 R602 C674 ZD631 VR603 VR602 VR601 DIGITAL MIC2 MIC1 ECHO VOLUME...
  • Page 50 CD-K491W TO HEADPHONES PWB TO MAIN PWB TO FAN MOTOR P44 2-F P43 7-A P47 8-G FWV91 CFWP01 CNSV11 FWP01 WTV11 TO MAIN PWB TO POWER PWB P42 4-A 1 2 3 4 5 E C B QV22 P51 12-F...
  • Page 51 CD-K491W Figure 51 WIRING SIDE OF P.W.BOARD (10/10) – 51 –...

  • Page 52: Waveforms Of Cd Circuit

    CD-K491W 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 53: Troubleshooting

    CD-K491W 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 54 CD-K491W • When the CD tray fails to open or close. Is there following voltage input in specific state of ICF01 pin 86? Check the OPEN CLOSE SW and the wiring from the ICF01 pin 86 to the OPEN CLOSE SW.
  • Page 55 CD-K491W • 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). If the disc is not turning, the DRF Does the DRF signal change from "L"...
  • Page 56 CD-K491W • 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 57: Function Table Of Ic

    CD-K491W 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 58 CD-K491W 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 59 CD-K491W 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 60 CD-K491W 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 61 CD-K491W ICQ01 VHiQS7777PF-1: Q-Sound Decorder (QS7777PF) Terminal Name Input/Output Pin No. Function VREFOUT Output Buffered reference voltage output (VANA/2) VREFIN Input Reference voltage input (Biased to VANA/2 internally) MSC3 Input Capactior MSC2 Input Capactior MSC1 Input Capactior — Ground PSAVE...
  • Page 62 CD-K491W ICF01 RH-iX0254AWZZ:System Microcomputer (IX0254AW) 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. Input/output can be specified in 1-bit units...
  • Page 63 CD-K491W 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) 3-10 P30-37 Input/Output 8-Bit input/output port. Input/output can be specified in 1-bit units...
  • Page 64 CD-K491W 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 S34: High voltage withstand input port PE2...
  • Page 65 CD-K491W ICA18 VHiZR38600/-1: DOLBY AC-3/5.1CH MPEG2 AUDIO DECORDER (ZR38600 ) (1/2) Terminal Name Input/Output Pin No. Function Output Address bus. The address bus is always active. — Ground pin Input Serial host interfase: Slave select input (SPI) Input ICE interfase mode selection (TAG)
  • Page 66 CD-K491W ICA18 VHiZR38600/-1: DOLBY AC-3/5.1CH MPEG2 AUDIO DECORDER (ZR38600 ) (2/2) Terminal Name Input/Output Function Pin No. Output Data output for serial ports B, C and D — Used to connect a power supply of +3.3V ±5% GPIO2 Input/Output General-purpose I/O pin...
  • Page 67 CD-K491W ICA18 VHiZR38600/-1: DOLBY AC-3/5.1CH MPEG2 AUDIO DECORDER (ZR38600 ) To µ con Serial In Internal Internal Internal Seiral Serilal Program Program/Data Data Audio Host Inputs 1KX32 16KX32 9KX20 Digital S/PDIF Audio I/F Input Digital Audio I/F Control output Parallel...

  • Page 68: Fl Display

    CD-K491W FLD01 : VVKBJ613GK/-1 FL Display (15G 13G) ‘ (2G) (1G) – – – – – – – – – – – – – – – – – – – – – – – – – – – – –...
  • Page 69 “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the For U.S.A. only following information. Contact your nearest SHARP Parts Distributor to order. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll-Free;...
  • Page 70 CD-K491W PRICE PRICE DESCRIPTION PARTS CODE PARTS CODE DESCRIPTION RANK RANK QD01~08 VSKRC107M//-1 AC Digital,NPN,KRC107 M CD-C491W QD10~12 VSKRC107M//-1 AC Digital,NPN,KRC107 M QG01 VSKRC102M//-1 AC Digital,NPN,KRC102 M INTEGRATED CIRCUITS QG02,03 VSKTC3199GR-1 AB Silicon,NPN,KTC3199 GR QG04 VSKTA1266GR-1 AB Silicon,PNP,KTA1266 GR VHILA9241M/-1 AS Servo Amp.,LA9241M...
  • Page 71 CD-K491W PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PARTS CODE RANK RANK AB 2.2 µH,Peaking DV17 VHD1SS133//-1 AA Silicon,1SS133 LG01 VP-DH2R2K0000 AB 1 µH,Choke DV19~25 VHD1SS133//-1 AA Silicon,1SS133 LH51,52 VP-XF1R0K0000 AB 100 µH,Choke DX13~17 VHD1SS133//-1 AA Silicon,1SS133 LH53 VP-XF101K0000 DX21 VHD1SS133//-1...
  • Page 72 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AA 0.001 µF,50V AB 2.2 µF,50V,Electrolytic VCKYBT1HB102K C633 VCEAZA1HW225M J AA 0.001 µF,50V AC 0.082 µF,50V,Mylar C301 VCKYMN1HB102K J C634 VCQYKA1HM823J J AA 0.022 µF,25V AB 47 µF,25V,Electrolytic C303,304...
  • Page 73 CD-K491W PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PARTS CODE RANK RANK AB 47 µF,25V,Electrolytic AB 22 µF,25V,Electrolytic CA95,96 VCEAZA1EW476M J CK45 VCEAZA1EW226M J AA 0.1 µF,25V AC 220 µF,10V,Electrolytic CA97 VCKYTV1EF104Z CK46 VCEAZA1AW227M J AC 10 µF,16V,Electrolytic AA 0.022 µF,25V...
  • Page 74 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK AC 1000 µF,6.3V,Electrolytic CV27 VCEAZA0JW108M J VRS-TQ2BB000J AA 0 ohm, AB 47 µF,50V,Electrolytic CV28 VCEAZA1HW476M J Jumper,1.55×3.1mm, Green AH 3300 µF,50V,Electrolytic CV29,30 VCEAZW1HW338M J VRS-TV2AB000J AA 0 ohm,Jumper,1.25×2mm,Green AB 0.1 µF,50V,Mylar...
  • Page 75 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R330 VRD-ST2CD102J AA 1 kohm,1/6W RA25,26 VRS-TV2AB103J AA 10 kohm,1/10W R338,339 VRD-ST2CD471J AA 470 ohms,1/6W RA27,28 VRS-TQ2BB151J AA 150 ohms,1/8W R340 VRD-ST2CD221J AA 220 ohms,1/6W RA29 VRS-TV2AB473J AA 47 kohms,1/10W...
  • Page 76 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK RE22 VRD-ST2CD102J AA 1 kohm,1/6W RG25 VRD-ST2CD103J AA 10 kohm,1/6W RE23 VRD-ST2CD122J AA 1.2 kohms,1/6W RG26 VRD-MN2BD103J AA 10 kohm,1/8W RE25,26 VRD-ST2CD392J AA 3.9 kohms,1/6W RG29,30 VRD-MN2BD151J AA 150 ohms,1/8W...
  • Page 77 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK RK66 VRD-MN2BD273J AA 27 kohms,1/8W RV56 VRD-ST2CD392J AA 3.9 kohms,1/6W RK67 VRD-MN2BD473J AA 47 kohms,1/8W RV57 VRD-ST2CD472J AA 4.7 kohms,1/6W RK68 VRD-MN2BD4R7J AA 4.7 ohms,1/8W RV58 VRD-ST2CD103J AA 10 kohm,1/6W...
  • Page 78 CD-K491W PRICE PRICE DESCRIPTION PARTS CODE PARTS CODE DESCRIPTION RANK RANK RZ43~46 VRD-ST2CD102J AA 1 kohm,1/6W FWD02 QCNWN1282AWZZ J AF Flat Wire,3Pin RZ47 VRD-MN2BD102J AA 1 kohm,1/8W FWM1 QCNWN1230AWZZ J AF Flat Wire,13Pin RZ48,49 VRD-ST2CD102J AA 1 kohm,1/6W FWM2 QCNWN0942AWZZ J...
  • Page 79 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK SWM3(250-9) 92LM-SW1676A AC Switch,Leaf Type [REC FWD] LANGK0132AWFW J AE Bracket,PWB/Knob SWM4(250-10) 92LM-SW1676A AC Switch,Leaf Type [REC RVS] LCHSM0071AWFW J AW Main Chassis SWM5(250-11) QSW-F9003AWZZ AG Switch,Leaf Type [F.A.S]...
  • Page 80 BE Front Panel,Right TINSZ0356AWZZ AC Quick Guide 92L201L0C49210 AY Net Frame Ass’y,Left [Except for Thailand] 92L201R0C49210 AY Net Frame Ass’y,Right TLABB0001AWZZ AB Label,SHARP Corporation 92L23036099010 AC Catching Holder JAPAN [For Syria/Chile/Peru/ 92L3141PC49210 AM Speaker Cord Ass’y with Bolivia (SET)] Capacitors TLABE0260AWZZ...
  • Page 81 CD-K491W PRICE PRICE PARTS CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK 92L394-0041 AC Leg Cushion 92L372-0094 AB Screw,ø4×20mm 92L372-0101 AB Screw,ø3×12mm 92L351-0156 Label,Specifications VSP0012WBF08A BB Speaker,Woofer VSP0050TBK48A AT Speaker,Tweeter SPEAKER BOX PARTS SURROUND SPEAKER (GBOXS0011AWM3) 92L121-0156 Net Frame Ass’y 92L129-0001 AW Rear Cabinet Ass’y with...
  • Page 82 CD-K491W CD-K491W 306-2 306-1 306-3 703x2 305x2 PWB-K Figure 13 CD MECHANISM EXPLODED VIEW – 13 –...
  • Page 83 CD-K491W CD-K491W 610 x2 615x4 PWB-G 608x2 PWB-C3 PWB-C1 604x12 604x3 FLD1 615x2 PWB-A PWB-C2 225B 225C 218 229 225D PWB-C4 223-2 223-1 223-3 250 (250-1–250-12) ICR11 225A 225E 224-2 224-1 224-3 605x6 604x2 PWB-L Silicon Grease 607x2 607x2 289x3...
  • Page 84 CD-K491W CD-K491W 260-3 260-2 609x2 260-1 609x2 281x2 MECHANISM 602x2 620x4 PWB-B PWB-J SOLM2 Figure 15 CABINET EXPLODED VIEW (2/2) – 15 –...
  • Page 85 CD-K491W SUPER CP-K491 TWEETER TWEETER SP3(L-CH) SP5(L-CH) SP4(R-CH) SP6(R-CH) C1,2 Capacitor (SP5,6) WOOFER 909x2 SP1(L-CH) SP2(R-CH) 903 905x2 (with Capacitor C1,2) 905x2 SP3,4 909x2 SP1,2 908x4 SUPER TWEETER SP5(L-CH) SP6(R-CH) TWEETER SP3(L-CH) C1,2 SP4(R-CH) Capacitor 2.7µF,100V,Electrolytic(N.P.) WOOFER SP1(L-CH) SP2(R-CH) Figure 16 SPEAKER EXPLODED VIEW (1/3)
  • Page 86 CD-K491W CP-SW491 905x4 BLACK Figure 17 SPEAKER EXPLODED VIEW (2/3) – 17 –...
  • Page 87 CD-K491W Figure 18 SPEAKER EXPLODED VIEW (3/3) – 18 –...

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