Repair Manual Kenwood KDC X590 CD RECEIVER

© 2006-3 PRINTED IN JAPAN B53-0393-00 ( N ) 960 CD RECEIVER KDC-MP632U KDC-W6534U/UY KDC-X590 KDC-X7533U SERVICE MANUAL * Depends on the model. Refer to the parts list. Panel assy KDC-MP632U (A64-3760-01) Panel assy KDC-MP6534U/UY (A64-3762-01) Mounting hardware assy (J22-0011-03) Lever (D10-4589-04) x2 * DC cord (E30-xxxx-xx) * Screw set (N99-1757-05) * Escutcheon (B07-xxxx-xx) SPARE TDF PANEL MAIN UNIT NAME TDF PARTS No. TDF NAME KDC-MP632U Y33-2540-61 TDF-MP66D KDC-W6534U Y33-2540-63 TDF-W6534U KDC-W6534UY Y33-2540-63 TDF-W6534U KDC-X590 Y33-2540-60 TDF-65DX * Carrying case (W01-xxxx-xx) * DC cord (E30-6412-05) * Antenna adaptor (T90-0523-05) * Plastic cabinet assy (A02-2743-03) * Remote controller assy (RC-527) (A70-2067-15) Battery (Not supplied) Panel assy KDC-X590 (A64-3759-01) Panel assy KDC-X7533U (A64-3761-01) Mounting hardware (R) (J22-0259-04) Mounting hardware (L) (J22-0258-04) Screw set (N99-1780-05) KDC-X7533U Y33-2540-62 TDF-X7533U A.RDM RDM VOL AUD SET UP SCAN S.MODE REP Q MENU M.RDM F.SEL KDC-X590 FF FM SCRL AUTO AME s AM SW /C.S. DISP USB c o A.RDM RDM S.MODE VOL AUD SET UP SCAN REP Q MENU M.RDM F.SEL KDC-MP632U FF FM SCRL AUTO AME s AM SW /C.S. DISP USB VOL AUD SET UP SCAN REP Q MENU M.RDM F.SEL KDC-X7533U FF AM FM SCRL AUTO AME A.RDM RDM S.MODE s SW USB VOL AUD SET UP SCAN REP Q MENU M.RDM F.SEL KDC-W6534U FF FM SCRL A.RDM RDM TI AME S.MODE s AM SW /PTY DISP USB * Compact disc (W01-xxxx-xx) CD MECHANISM EXTENSION CORD (30P) : E39-0812-05 This product uses Lead Free solder.

2 KDC-MP632U KDC-W6534U/UY/X590/X7533U BLOCK DIAGRAM ELECTRIC UNIT (X34- ) SWITCH UNIT (X16- ) FRONT-END LX-BUS E-VOL IC2 CD MECHA BU5V D5V PREF PRE+B A8V SYSTEM u-COM BU PW-IC SP-OUT LOGIC Q400-407 PRE-OUT PHONE ACC-DET Q112 DIMMER Q108 SURGE- Q109 BU5V P-CON-SW Q1,2 Q103,106 BU-DET Q111 4V Q15 IC5 SW14V Q4,9 SW5V Q3,11 ANT-CON Q101,102 Q7,8 TUNER Q302,303 A8V Q5,6,10 DC-CN TUN8V PRE+B SERVO+B BU5V SW5V 8V PRE+B DET MUTE BU DC-CN etc SW EJECT BU5V PAN5V FLIP DET RESET IC7 ILLUMI+B CN RESET ENCODER ROTARY REMOTE SW5V ILLUMI KEY MATRIX KEY VFD IC1 SW5V Q4,5 R73 PAN5V IC4 IC2 J1 +B ILLUMI ILLUMI+B ILLUMI SW Q305,306 AM+B AM+B Q300,301 S1 ED1 FL+B J3 MUTE IC6 J2 TUN8V AM+B SW5V W1 A1 SERVO+B A8V S4 BU5V BU5V EJECT & DSI ILLUMI Q304 Q13 BU5V BU5V BU5V J1 DME1 MARINE REMOTE OPEL DISPLAY BU5V SW5V CD SERVO BU5V BU5V BU5V AUX IN CN4 +B S3 DET to GND FLIP 1W Rx1 S3 J1 OEM REMOTE CN5 IC9 RDS/ RDBS SW5V USB CN2,3 USB5V C104,D107,R112 CON EXT-AMP- Q107 BU5V SW20V SURGE Q12,21 IC12 SW REG IC8 D5V SW HI-SIDE USB5V A8V IC13 FL+B FL+B J4 7 1 3 2 10 1 REAR L/R FRONT L/R FRONT/REAR/(NF) SW5V ANT CON P-CON BU DET ACC ILLUMI PHONE P-ANT P-CON B.U. MUTE DC-DET PHONE ACC DET DIMMER 1 1 2 RST PHONE 9 5 P.ON P.ON P.ON P.ON P.ON ILLUMI AM+B SELECT COLOR BU DET Q111 Q114 1 1 3 MUTE 3 8 1 2 3 NF L/R EXT-CONT FST P.ON USB/CURRENT DET 2 EX-AMP P.ON CD P.ON DIMMER/ BU DET/ P-CON/P.ON P.ON CD/ P.ON FL/ ACC DET P.ON ILLUMI EX-AMP ANT CON P.ON USB CURRENT DET P.ON FL

KDC-MP632U KDC-W6534U/UY/X590/X7533U 3 BLOCK DIAGRAM CD PLAYER UNIT (X32-5830-00) TR COIL FO COIL C F A B E PD LD SERVO DSP MOTOR DRIVER SP MOTOR LOADING & MOTOR SLED IC4 IC2 u-COM IC1 IC15 IC5 SW3.3V 3V REG IC21 1.8V REG IC20 IC19 BU3.3V REG IC14 A5V REG DAC 3.3 5V LPF IC18 IC13 64Mbit SDRAM IC16 MEMORY FLASH IC17 8Mbit D5V (D4V) S7.5V A8V BU5V AUDIO DSP DM2 DM1 DPU1 Q7 (SW3.3V) S4 ONLY 0-01 S2 S1 S3 (BU5V) 3.3 Q6 5V RESISTOR 3.3 R6,8 5V (BU5V) Q3 3.3 5V 3-STATE BUFFER IC28 GATE NAND IC26 DRIVER USB IC25 to X34- 16.893MHz SW3.3V S7.5V RESET SCK SI STB A0 SO INTQ POWER ON 11.500MHz BU3.3V D5V CKO SW3.3V CS3.3V CS1.8V POWER BU3.3V SW A5V BU5V A8V SER2 (3/4WIRE) LOE/LIM- 8EJE-SW LOS-SW 12EJE-SW AUDIO Lch CS3.3V CONTROLLER MEMORY CS3.3V CS3.3V SW A5V I2S CD I/F CS3.3V CS1.8V & CS POWER CS POWER X1 DA EMPH I2CDATA I2CCLK MRESET MSTOP AUDIO MUTE EMPH INFINITY 0 DET. CSRST S DATA DATA MUTE B DATA CLK SREQ BREQ CS EMPH DAC RST DAC MUTE PCM XCK PCM DATA PCM LRCK PCM BCLK AUDIO Rch SW A8V CS3.3V DATA LRCK BCLK C16 PLL CS, A20 CS3.3V CS3.3V USB CS X2 6.00MHz X3 USB D+ USB D- OC PO CSRST UHC124 ELECTRIC UNIT (X34-) CD PLAYER UNIT (X32-) u-COM SESTEM AUDIO LINE CONTROLLER USB HOST DAC IC18 DSP USB LINE LFP IC13 BU3.3V IC25 u-COM MECHA- IC1 IC19 IC15 CS3.3V (CS1.8V) IC20,21 CONNECTOR CN1 CONNECTOR IC1 CN1 CONNECTOR E-VOL IC2 USB 5V SW-REG. HIGH-SIDE SWITCH IC8 IC12 Q1,2 BU5V CN2 or CN3 RESET INT Rch USB D+ USB D- Lch CSRST P-ON POWER ON SW OVER CURRENT D5V BU5V MSTOP USB GND USB D- USB D+ CABLE BU14V P-ON (V-BUS 5V) USB 5V

4 KDC-MP632U KDC-W6534U/UY/X590/X7533U COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-415x-xx) Ref. No. Application / Function Operation / Condition / Compatibility IC1 System µ-COM Controls FM/AM tuner, the changer, CD mechanism, panel, volume and tone. IC2 E-VOL Controls the source, volume, tone. IC3 A8V REF Power Supply Outputs 1.27V. IC4 Power IC Amplifies the front L/R and the rear L/R to 50W maximum. IC5 ILLUMI+B Power Supply Outputs 11.25V. IC6 Muting Logic IC Controls logic for muting. IC7 Reset IC “Lo” when detection voltage goes below 3.6V or less. IC8 Hi-side SW Over current protection of USB power supply. When pin 1 goes “Hi”, USB5V is ON. IC9 RDS IC Decodes RDS. IC10 Installer Memory IC Installer memory. IC11 Analog IC OP-AMP. IC12 SW Regulator Supplies power for USB and CD mechanism. IC13 FL+B Power Supply Outputs 3.0V. Q1,2 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V. Q3,11 SW5V When Q11’s base goes “Hi”, SW5V outputs +5V. Q4,9 SW14V When Q9’s base goes “Hi”, SW14V outputs 14V. Q5,6,10 AUDIO8V AVR When Q10’s base goes “Hi”, A8V AVR outputs 8.0V. Q7,8 SERVO+B AVR When Q8’s base goes “Hi”, S+B AVR outputs 7.5V. Q12,21 Serge Protect for IC12 Outputs 20V when BU is over 20V. Q13 PANEL5V When the base goes “Lo”, PANEL5V outputs 5V. Q14,16 4V-PRE+B Protect When 4V-PRE+B is over current, Q14 and Q16 make Q15 turns off. Q15 4V-PRE+B AVR When the base is 8V, 4V-PRE+B outputs 7.4V. Q17 IC12 ON/OFF When the base goes “Lo”, IC12 is “ON”. Q101,102 P-ANT SW When Q102’s base goes “Hi”, P-ANT SW outputs 14V. Q103,106 P-CON SW When Q106’s base goes “Hi”, AVR outputs 14V. Q104,105 P-CON Protection Output protection is applied when P-CON output voltage fall is detected. The 2 transistors protect Q103 false operation when P-CON SW is “ON”. Q107 EXT-AMP-CON When the base goes “Lo”, Q107 is turned on. Q108 Small Lamp DET SW When the base goes “Hi”, Q108 is turned on. Q109 Serge DET When the base goes “Hi”, IC4 is changed into standby source. Q111 BU DET When the base goes “Hi”, Q111 is turned on. Q112 ACC DET When the base goes “Hi”, Q112 is turned on. Q113 Mute Driver When the base goes “Hi”, pre-out mute driver is turned on. Q116 Pre-out Mute Driver When the base goes “Lo”, mute driver is turned on. Q300,301 AM+B When Q301’s base goes “Hi”, AM+B is output. Q302,303 Tuner8V When Q303’s base goes “Hi”, Tuner8V outputs 8V. Q304 DSI When the base goes “Hi”, security indicator lights. Q305,306 SW ILLUMI+B When Q306’s base goes “Hi”, SW ILLUMI+B outputs 11V. Q400~407 Pre-out Mute SW When the base goes “Hi”, pre-out is muted. Q408 Pre-out Mute ON/OFF When the base goes “Lo”, pre-out mute is "ON".

KDC-MP632U KDC-W6534U/UY/X590/X7533U 5 ● SWITCH UNIT (X16-374x-xx) Ref. No. Application / Function Operation / Condition / Compatibility IC2 Remote Control IC Q4,5 SW5V The power supply of IC2 is turned on when Q5’s base level goes “Hi”. Q10 GREEN SW When the base goes “Hi”, LED lights. Q12~14 Grid Driver Each grid is ON when each transistor’s base is “Lo”. Q15 RED SW When the base goes “Hi”, LED lights. Q18 SUB ILLUMI SW When the base goes “Hi”, LED lights. Q19 DBO ILLUMI SW When the base goes “Hi”, LED lights. Q20 Key Scan Start SW Key scan starts when the base goes “Hi”. ● CD PLAYER UNIT (X32-5830-00) Ref. No. Application / Function Operation / Condition / Compatibility IC1 Mechanism µ-COM IC2 Signal Processor IC4 BTL Driver Spindel motor, sled (including loading & eject) motor and pick-up actuator IC5 SW3.3V Regulator 3.3V power supply for IC2, pick-up, IC18 digital part IC13 Audio Active Filter 2nd LPF IC14 A5V Regulator 3.3V power supply for DAC IC15 DSP for Compression Audio Decoder ACDrive decoder, MP3/WMA/AAC decoder IC16 Compression Audio Codec SDRAM IC17 Decoder Software & Unique ID Strage Flash ROM IC18 Audio D-A Converter (24-bit external) External 24-bit for audio IC19 BU3.3V Regulator 3.3V power supply for µ-com IC20 1.8V Regulator 1.8V power supply for IC15 core part IC21 Decoder/SDRAM/Flash ROM/USB Driver 3.3V Power supply for decoder, SDRAM, flash ROM and USB driver. Regulator 3.3V power supply for IC15 port parts, IC16, IC17, IC25, IC26 and IC28. IC25 USB Host Controller IC26 Switching among IC15 & Flash ROM & For DSP for Compression Audio Decoder, Flash ROM, SDRAM and USB SDRAM & USB IC28 Clock SW To SDRAM Q3 Level Shift 3.3V→5V Q6,7 Level Shift 3.3V←5V Q8 APC (Auto Power Control) Q9,10 Anticipation Sub-beam Delay During non-searching Q17 USB Hi-side SW D2 Static Electricity Countermeasure For IC2 built-in reset terminal D3 Laser Diode Protection D9 Static Electricity Countermeasure COMPONENTS DESCRIPTION

6 KDC-MP632U KDC-W6534U/UY/X590/X7533U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT) Pin No. Pin Name I/O Application Truth Processing / Operation / Description Value Table 1 REMO I Remote control signal input Detects pulse width 2 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF 3 AUD SDA O E-VOL data output 4 AUD SEL O E-VOL control 5 AUD SCL O E-VOL clock output 6 BYTE - 7 CNVSS - 8 XCIN I 9 XCOUT I 10 RESET - 11 XOUT - 12 VSS - 13 XIN - 12.0MHz 14 VCC1 - 15 NMI - Not used 16 CN DET I Panel communication detection H: Panel detached, L: Panel attached (Flip-down panel model only) 17 RDS CLK I RDS decoder clock input 18 LX REQ S I Communication request from slave unit 19 PON AM I/O AM power supply control H: Receiving AM, Hi-z: No AM 20 LX REQ M O Communication request to slave unit 21 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station 22 NC - Not used L fixed 23 RDS AFS M I/O Noise detection time constant switching q Refer to the truth value table 24 RDS QUAL I RDS decoder QUAL input 25 RDS DATA I RDS decoder data input 26 PWIC BEEP O Beep output 27 TUN SCL I/O Front-end I2C clock input and output MAX400kHz 28 TUN SDA I/O Front-end I2C data input and output 29 VFD DATA I/O VFD data input and output 30 VFD INT I VFD INT input INT input 31 VFD CLK O VFD clock output Normal: 125kHz, Low consumption mode: 62.5kHz H: Canceling reset, L: Reset 32 VFD RST O VFD driver reset L: Momentary power down, panel detached or 11 minutes after ACC OFF 33 ROMCOR SDA I/O E2PROM I2C data input and output for ROM correction 34 ROMCOR SCL I/O E2PROM I2C clock output for ROM correction Panel 5V control L: ON 35 PON PANEL I/O (Flip-down panel model only) Hi-Z: Momentary power down, panel detached or 11 minutes after ACC OFF 36 DSI I/O DSI/EJECT LED control OFF: Hi-z, Pulse drive: Panel detached (Flip-down panel model only) H: Illumination ON or panel opened (POWER ON) 37,38 NC - Not used L fixed

KDC-MP632U KDC-W6534U/UY/X590/X7533U 7 Pin No. Pin Name I/O Application Truth Processing / Operation / Description Value Table 39 EPM I Flash EPM input 40 PANEL DET I Panel detection (Flip-down panel model only) L: Panel detached, H: Panel attached 41 NC - Not used L fixed 42 ROMCOR DET I E2PROM writing request H: Writing 43 PON FL O FL+B control H: FL+B ON, L: FL+B OFF 44 VFD CS O VFD chip select control 45 ROTARY CW I VOL key input Detects pulse width 46 ROTARY CCW I VOL key input Detects pulse width 47 CD DISC12 SW I 12cm CD detection 48 CD LOS SW I CD loading detection 49 CD MUTE R I Rch CD mute request H: Normal, L: Requesting Rch mute 50 CD MUTE L I Lch CD mute request H: Normal, L: Requesting Rch mute 51 CD MRST O CD mecha µ-COM reset H: Normal, L: Reset 52 CD MSTOP O CD mechanism µ-COM stop H: Mecha µ-COM operates, L: Mecha µ-COM stops 53 CD DISC8 SW I 8cm CD detection (Not used) 54 CD LOE LIM SW I CD detection (Chucking SW) H: Loading completes, L: No disc 55 CD LOEJ I/O CD motor control w Refer to the truth value table 56 CD MOTOR O CD motor control w Refer to the truth value table 57 PON ILLUMI I/O Key illumination power supply control H: ON, Hi-Z: OFF 58 PON CD O Power supply control for CD-WMA L: POWER ON, H: POWER OFF L: Before M-STOP with reset 59 PON O Power supply H: POWER ON, L: POWER OFF 60 VCC2 - 61 EXT AMP CON I/O EXTERNAL AMP control 62 VSS - 63~65 TYPE 1~3 I Destination switching e Refer to the truth value table 66 TUN TYPE1 I Destination setting 1 r Refer to the truth value table 67 TUN TYPE2 I Destination setting 2 r Refer to the truth value table 68 OEM DISP DATA I/O External display data (Destination K and E only) External display 69 OEM DISP CLK I/O External display clock (Destination K and E only) External display 70 OEM DISP CE I/O External display control request External display (Destination K and E only) 71 EJECT I Eject key input (Flip-down panel model only) L: Eject 72 P CON O External amplifier control H: POWER ON, L: POWER OFF or STANDBY 73 VFD KEY REQ I Communication request from VFD driver Connects to INT 74 ANT CON O Power antenna control Tuner ON: H 75 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF 76 BU DET I Momentary power-down detection L: BU found, H: No BU or momentary power down 77 ACC DET I ACC power supply detection L: ACC found, H: No ACC 78 (PWIC SVR) O SVR discharging circuit H: POWER OFF or 5 seconds after momentary power down, L: Other conditions 79 PWIC MUTE O Power IC mute L: STANDBY, momentary power down or TEL mute 80 PWIC STBY O Power IC standby control H: POWER ON, L: POWER OFF 81 LX CON O Start-up request to slave unit H: Slave unit starts up, L: Slave unit stops MICROCOMPUTER’S TERMINAL DESCRIPTION

8 KDC-MP632U KDC-W6534U/UY/X590/X7533U Pin No. Pin Name I/O Application Truth Processing / Operation / Description Value Table 82 MUTE PRE R O Rch preout mute CD MUTE R is Lo: H (CD playing), Momentary power down: H, L: DUAL ZONE or NAVI INT 83 MUTE PRE L O Lch preout mute CD MUTE L is Lo: H (CD playing), Momentary power down: H, L: DUAL ZONE or NAVI INT 84 MUTE 0 I/O E-VOL front mute L: Mute ON, Hi-Z: Mute OFF 85 MUTE 1 I/O E-VOL rear mute L: Mute ON, Hi-Z: Mute OFF 86 MUTE 2 I/O E-VOL mute (Except front/rear) 87 LINE MUTE I Line mute detection TEL mute: Below 1V NAVI mute: Over 2.5V 88 MUTE PRE SW I/O NF preout mute L: Mute ON, Hi-Z: Mute OFF OFF fixed: Selecting REAR in REAR/SUB selection 89 PWIC DC DET I DC offset error detection 90 LX RST O Forced reset to slave unit H: Reset, L: Normal 91 MUTE C I/O E-VOL mute L: Mute ON, Hi-Z: Mute OFF 92 NC - Not used L fixed 93 RDS NOISE I FM noise detection 94 AVSS - 95 TUN SMETER I S-meter input 96 VREF - Connects to P.ON 97 AVCC - Connects to VCC 98 LX DATA S I Data from slave unit 99 LX DATA M I/O Data from and to slave unit 100 LX CLK I/O LX-BUS clock MICROCOMPUTER’S TERMINAL DESCRIPTION Truth value table q AFS CONTROL RDS AFS M Condition AFS LOW L No sound output with AF search AFS MID L Sound output with AF search AFS HIGH Hi-Z Normal reception w CD MOTOR CONTROL CD MOTOR CD LOADING/EJECT Stop L L Load H L Eject H H Brake H Hi-z r TUNER TYPE TUN TYPE1 TUN TYPE2 (Pin 66) (Pin 67) Kenwood brand model L L OEM model 1 L H OEM model 2 H L OEM model 3 H H e DESTINATION SW TYPE 3 TYPE 2 TYPE 1 DESTINATION MODEL (Pin 65) (Pin 64) (Pin 63) 0 0 0 K KDC-X590 0 0 1 K KDC-MP632U 0 1 0 E KDC-W6534U/UY 0 1 1 E DPX501U/UY 1 0 0 M KDC-X7533U 1 0 1 M DPX-MP2090U 1 1 0 K DPX501 1 1 1 J DPX-U077

KDC-MP632U KDC-W6534U/UY/X590/X7533U 9 MICROCOMPUTER’S TERMINAL DESCRIPTION ● MECHANISM µ-COM: IC1 (X32-: CD PLAYER UNIT) Pin No. Pin Name I/O Application Processing / Operation / Description 1~5 NC - Not used Opened output L fixed 6 BYTE I External data bus SW input Connects to GND 7 CNVSS I Processor mode SW L: Single chip mode H: Microprocessor mode or flash ROM writing 8 MUTE O Audio mute control L: Mute ON, H: Mute OFF 9 NC - Not used Opened output L fixed 10 RESET I Reset detection L: Reset (Flash ROM writing), H: Normal 11 XOUT O Main clock output Connects to resonator 12 VSS - Power supply input Connects to GND 13 XIN I Main clock input Connects to resonator 14 VCC1 - Power supply input Connects to BU3.3V 15 NMI I NMI interruption input Input Hi (Pull-up) fixed 16 MSTOP I STANDBY comeback interrupption L: Stop, H: Stop cancelled (Hi edge) 17 NC - Not used Opened output L fixed 18 DSP INT I DSP interruption signal input H: Interruption (Hi edge) 19~22 NC - Not used Opened output L fixed 23 E2P SCL I/O E2P I2C clock output Series resistors and E2PROM are not built when ROM collection is not used. 24 E2P SDA I/O E2P I2C data input and output Series resistors and E2PROM are not built when ROM collection is not used. 25,26 NC - Not used Opened output L fixed 27 SCL I System µ-com I2C clock input 28 SDA I/O System µ-com I2C data input and output 29 DSP TXD O Data output for DSP serial data Flash ROM writing: TXD (Pull-up) 30 DSP RXD I Data input for DSP serial data Flash ROM writing: RXD 31 DSP CLK O Clock output for DSP serial data Flash ROM writing: SCLK(Pull-up) 32 DSP STB(BUSY) O DSP data strove signal output Flash ROM writing: BUSY 33 CS SDATA O Data output for decoder serial data 34 CS BDATA I Data input for decoder serial data 35 CS CLK O Clock output for decoder serial data 36~38 NC - Not used Opened output L fixed 39 EPM - Not used (Flash ROM: EPM) Opened output L fixed 40 PON D3.3 O D3.3V POWER ON control H: POWER ON, L: POWER OFF 41 PON A5 O A5.0V POWER ON control H: POWER ON, L: POWER OFF 42 PON CS1 O IC15 series 3.3V POWER ON control H: POWER ON, L: POWER OFF 43 PON CS2 O IC15 series 1.8V POWER ON control H: POWER ON, L: POWER OFF 44 CE - Not used (Flash ROM: CE) Opened output L fixed 45 DRV MUTE O Driver mute L: Stop, H: Mute OFF 46,47 NC - Not used Opened output L fixed 48 ZERO M I 0-bit mute detection H: Mute ON, L: Mute OFF (No distinction of Lch/Rch) 49 DE-EMPHASIS O DAC de-emphasis control H: De-emphasis ON, L: De-emphasis OFF 50,51 NC - Not used Opened output L fixed 52 LIM SW I Laser pick-up inner circumference detection H: Inner circumference SW signal input

10 KDC-MP632U KDC-W6534U/UY/X590/X7533U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name I/O Application Processing / Operation / Description 53 DISC NORMAL O Media discrimination result output (Not used) H: Normal disc, L: Other disc 54 DISC H RW O Media discrimination result output (Not used) H: High reflecting RW disc, L: Other disc 55 DISC RW O Media discrimination result output (Not used) H: Normal RW disc, L: Other disc 56~59 TEST OUT4~1 O Output for test Opened output L fixed 60 VCC2 - Power supply input Connects to BU3.3V 61 TEST OUT0 O Output for test Opened output L fixed 62 VSS - Power supply input Connects to GND 63~66 NC - Not used Opened output L fixed 67 TEST IN3 I TEST IN3 Pull-down connection (L: Normal/H: During test) 68 MODEL SEL I Model determination L: DXM-6810W (X32-583), H: DXM-6820W (X32-587) 69 E2P WRITE I TEST IN1: E2P writing permission Pull-down connection (L: Normal/H: During writing) 70 UNIQ ID I TEST IN0: Uniqe ID writing permission Pull-down connection (L: Normal/H: During writing) 71~73 NC - Not used Opened output L fixed 74 SEARCH O Searching situation output H: During seaching, L: Normal 75,76 NC - Not used Opened output L fixed 77 DSP RST O DSP reset control L: Reset, H: Normal 78 DSP A0 O DSP command/parameter discrimination H: During parameter transmitting signal output L: During command transmitting 79 DA EMPHASIS I DSP DA emphasis input H: emphasis ON, L: emphasis OFF 80 ROM EMPHASIS I Decoder ROM emphasis input H: emphasis ON, L: emphasis OFF 81 DATA MUTE O Data output status L: During data output muting, H: During data output 82 CS RST O Decoder reset control L: Reset, H: Nornal 83 NC - Not used Opened output L fixed 84 SREQ O Decoder SREQ signal output 85 BREQ I Decoder BREQ signal input 86~93 NC - Not used Opened output L fixed 94 AVSS - Analog power supply input Connects to GND 95 NC - Not used Opened output L fixed 96 VREF - Reference voltage input Not used: Connects to GND 97 AVCC - Analog power supply input Connects to BU3.3V 98~100 NC - Not used Opened output L fixed

Repair Manual Kenwood KDC X590 CD RECEIVER

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