Kenwood KDC-MP928, Service Manual

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KDC-MP928/PSW9531
/PSW9531Y, XXV-01D
Ref. No. Application / Function Operation / Condition / Compatibility
IC12 STATIC RAM IC Temporary graphics data storing
IC13 LOGIC IC
For Control AVDD of OEL Module. When “H” out (AVDD ON) both DVDD
of OEL Module and pin#87 of IC4 are H
Q1 TRIANGLE RED LED SW Triangle red LED is lighting when Q1’s base level goes “H”
Q2 SUB ILLUMINATION BLUE LED (ROTARY) SW Sub illumination LED [Rotary] is lighting when Q2’s base level goes “H”
Q3 SUB ILLUMINATION BLUE LED (JOYSTICK) SW Sub illuminaiton LED [Joystick] is lighting when Q3’s base level goes “H”
Q4 KEY ILLUMINATION GREEN LED SW Green LED are lighting when Q4’s base level goes “H”
Q5 KEY ILLUMINATION RED LED SW Red LED are lighting when Q5’s base level goes “H”
Q6,9 AVDD OF OEL MODULE SW AVDD of OEL module is turned on when Q9’s base level goes “H”
Q7,8 SW5V SW SW5V the power supply of IC2, IC6 is turned on when Q8’s base level goes “H”
Q10 IC3 POWER SUPLLY SW Power of IC3 is turned on when Q10’s base level goes “L”
Q16,17 IC1, IC12 POWER SUPPLY SW SW3.3V the power supply of IC1, IC12 is turned on when Q16’s base level goes “H”
●
ELECTRIC UNIT (X34-356x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 DSP Analog Power Supply Output 3.3V
IC3 DAC Digital Power Supply Output 5.0V
IC4 DAC Analog Power Supply Output 5.0V
IC5 DSP Digital Power Supply Output 3.3V
IC10 Audio8V Ref Power Supply Output 1.27V
IC100 Reset IC “L” when detection voltage goes below 3.6V or less
IC102 System
µ
-com Controls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone
IC103 Muting logic IC Controls logic for muting
IC104 EEPROM For instraller’s memory
IC200 Power Control IC Power control switch
IC300 Eelectrical Volume & Source Selecter Controls the source, volume, and tone
IC301,302 Audio buffer AMP Low pass filter for DSP input
IC303 DSP Digital signal processer
IC304 Buffer IC It changes into 3.3V from 5.0V
IC305 DAC Digital to Analog converter
IC306~308 Audio buffer AMP Low pass filter for DAC output
IC400 RDS decoder
Panel mecha control
IC450 Panel mecha motor driver
IN Panel
IN1 IN2 mechanism
L L WAIT
L H OPEN
H L CLOSE
H H STOP
COMPONENTS DESCRIPTION
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