KENWOOD DPCMP4070B
Manual de Servicio

DPX-MP4070/MP4070B
� CONTROL UNIT
Ref. No. IC901 IC921 Q903 Q904 Q905 Q906 Q921 Application / Function LCD DRIVER REMOTE RED LED SW BLUE LED SW GREEN LED SW SECURITY INDICATOR SW REMOTE SW LCD driver Receives remote signal Operation / Condition

� EQUALIZER UNIT
Ref. No. IC250 Application / Function DOLBY/EQUALIZER Cassette audio equalizer Operation / Condition

� CD PLAYER UNIT (X32-5500-01)
Ref. No. Application / Function Operation / Condition Focusing, tracking, sled and spindle servo processing. Automatic adjustment (Focusing, tracking, gain, offset and balance) operations. IC1 MECHANISM CONTROL MICRO PROCESSOR Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data interpolation) operations, and microcomputer function. Generation of RF signal based on the signals from the APC circuit and pickup, and generation of servo error (Focusing error and tracking error) IC2 RF AMP/SERVO CD SIGNAL PROCESSOR signals. Detection of dropout, anti-shock, track crossing and off-track conditions, included gain control function during CD-RW. IC3 IC4 IC5 IC6 IC7 IC8 IC9 Q1 Q3-7 Q8 Q9,10 MP3/WMA DECODER Focusing coil, tracking coil, spindle motor and sled motor driver, disc 4ch BTL DRIVER loading and eject operation. SW 3.3V AVR BU 3.3V AVR BU 2.5V AVR SELECTOR (SERIAL DATA) DAC 3.3V AVR LEVEL SHIFT LEVEL SHIFT AUTOMATIC POWER CONTROL SWITCH 3.3V power supply for back-up. 2.5V power supply for back-up. Serial audio data switch. 3.3V power supply for IC2. 3.3V to 5.0V. 3.3V to 5.0V. LD driver. Switch for anticipation sub-beam delay.

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