Kenwood X 92 4590 00 Service Manual

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X92-4590-0x 2 BLOCK DIAGRAM Mother Board IC10IC12 Pick-UpR-ch L-ch 7IC6 A.GND A Q2 CIC11 Q4,5 6D.GND Vref D.GND IC5 Q1 D.GND D.GNDIC76SW5V /PON Bu.+5V Q3 IC2 X2X3 D.GND 9 16IC3 IC416.93MHz S3 Loe/Lim SW IC8IC9 S4 8Eje SW S2 12Eje SW S.GND D.GND S1 D.GND Los SW S.GND D4.7V D3.3V AVR Fo CoilTr CoilA.+8V Loading & Sled Motor Spindle MotorD3.3V SW PON D2.5V AVR Motor DriverSW5V SW Motor S7.5V Lo/Ej 0-01 Only A.GND A.GND A3.3V A3.3V AVR E APC MI-COMDRAMA.8V SW A.8V 1Chip IC Servo Processor + RF Amp + MP3 Decorder WMA Decorder LPF Clock 16.93MHz Clock 24.57MHz Level Shifter F 30 B D 2 4 2 2 2 Buffer  CD PLAYER UNIT (X32-5350-0x) Ref. No. Component Name Application/Function Operation/Condition/Compatibility IC2 L88MS33T D3.3V AVR Power supply for the pickup, IC5, IC8-10 and IC11 IC3 UPC3025 D2.5V AVR Power supply for IC8 IC4 BA5824FP 4CH BTL driverFocusing coil, tracking coil, spindle motor and sled motor driver, disc loading and eject operation. IC5 703030BYGF-M01 Mecha. control MI-COM. IC6 TAR5S33 A3.3V AVR Power supply for DAC, LPF operational reference voltage IC7 TC7MET541AKF Level shifting (3.3VÆ5V) Buffer and logic level conversion from IC10 to IC5 IC8 UPD61002GC-E01 WMA decoder IC9 TC7SHU04FU Clock buffer for WMA IC10 UPD63760GJ RF amplifier+CD DSP+MP3 decoder IC11IS41LV16257 or 4M bit DRAM For data buffer MSM51V4265EP70 IC12 NJM4580V Low pass filter 2nd low pass filter for audio signals IC13 HD74LV14AT Schmitt trigger for WMA Q1 DTA143EK SW5V SWWhen PON (14pin) goes Lo, Q1 is tur ned on, and SW5V is supplied to IC7 and AVREF (73PIN). Q2 MCH6101 APC LD power control Q3 DTC124EUA D3.3V SW When PON (13pin) goes Hi, Q3 is tur ned on, and IC2 is working. Q4 DTA143XUA A.8V SWWhen PON (13pin) goes Hi, Q4 and Q5 are turned on, and A.8V is Q5 DTC124EUA supplied to IC6 and IC12. COMPONENTS DESCRIPTION

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X92-4590-0x 3 MICROCOMPUTERS TERMINAL DESCRIPTION  IC5 (CD PLAYER UNIT : X32-5350-0x) Pin No. Pin Name I/O Description Processing Operation 1~8 NC O Not used (N.C.) 9 EVDD - Positive power supply connection terminal Connected to BU 5V lines. 10 EVSS - Ground connection terminal Connected to GND lines. 11,12 NC O Not used (N.C.) 13 PON O Power ON/OFF control terminal Lo: Power OFF, Hi: Power ON 14 PON O Power ON/OFF control terminal Lo: Power ON, Hi: Power OFF 15 LOE/LIM SW I Down limit SW detection terminal HiÆLo: Pickup most inner position detected 16 8EJE SW I 8cm disc detection SW input Not used (Pull down to GND lines) 17 LOS SW I Loading star t detection SW input Not used (Pull down to GND lines) 18 12EJE SW I 12cm disc detection SW input Not used (Pull down to GND lines) 19,20 NC O Not used (N.C.) 21 VPP - FLUSH write ter minal Not used (Connected to GND lines) 22 MUTE L O Lch. Audio muting request output Lo: Muting ON requested, Hi: Muting OFF requested 23 MUTE R O Rch. Audio muting request output Lo: Muting ON requested, Hi: Muting OFF requested 24~28 NC O Not used (N.C.) 29 EFLG I WMA error detection input Lo: No ERROR, Hi: ERROR detected 30 WAIT I Wait control signal detection input 31 FOK I Focusing condition detection input Lo: Focusing NG, Hi: Focusing OK 32,33 NC O Not used (N.C.) 34 RESET I Reset terminal Lo: Reset, Hi: Normal operation 35 XT1 I Sub clock resonator connection terminal Not used (Pull down to GND lines) 36 XT2 - Sub clock resonator connection terminal Not used (N.C.) 37 REGC -Capacitor connection terminal for regulator inside microprocessor 38 X2 - Main clock resonator connection terminal 39 X1 I Main clock resonator connection terminal 40 VSS - Ground connection terminal Connected to GND lines. 41 VDD - Positive power supply connection terminal Connected to BU 5V lines. 42 NC O Not used (N.C.) 43 WRL O Multiplex WRITE signal outputLo: Write signal for IC10 Not used for IC8 44 NC O Not used (N.C.) 45 R/W O Multiplex R/W signal outputNot used for IC10 Lo: Read signal, Hi: Write signal for IC8 46 DSTB/RD O Multiplex DSTB/RD signal outputLo: Read signal for IC10 Lo: Data strobe signal for IC8 47 ASTB O Multiplex ASTB signal output 48,49 NC O Not used (N.C.) 50~57 AD0~AD7 I/O Multiplex address/data bus