Kenwood KDC-MP928 Service Manual page 4

KDC-MP928/PSW9531
/PSW9531Y, XXV-01D
QQ
3 7 63 1515 0
Ref. No.
IC12 STATIC RAM IC
IC13 LOGIC IC
Q1 TRIANGLE RED LED SW
Q2 SUB ILLUMINATION BLUE LED (ROTARY) SW
Q3 SUB ILLUMINATION BLUE LED (JOYSTICK) SW
Q4 KEY ILLUMINATION GREEN LED SW
Q5 KEY ILLUMINATION RED LED SW
Q6,9 AVDD OF OEL MODULE SW
Q7,8 SW5V SW
Q10 IC3 POWER SUPLLY SW
Q16,17 IC1, IC12 POWER SUPPLY SW
ELECTRIC UNIT (X34-356x-xx)
Ref. No.
IC1 DSP Analog Power Supply
IC3 DAC Digital Power Supply
TE
IC4 DAC Analog Power Supply
L 13942296513
IC5 DSP Digital Power Supply
IC10 Audio8V Ref Power Supply
IC100 Reset IC
System µ-com
IC102
IC103 Muting logic IC
IC104 EEPROM
IC200 Power Control IC
IC300 Eelectrical Volume & Source Selecter
IC301,302 Audio buffer AMP
IC303 DSP
IC304 Buffer IC
IC305 DAC
IC306~308 Audio buffer AMP
IC400 RDS decoder
www
IC450 Panel mecha motor driver
.
4
COMPONENTS DESCRIPTION
Application / Function
Application / Function
x ao
y
i
8
Operation / Condition / Compatibility
Temporary graphics data storing
For Control AVDD of OEL Module. When "H" out (AVDD ON) both DVDD
of OEL Module and pin#87 of IC4 are H
Triangle red LED is lighting when Q1's base level goes "H"
Sub illumination LED [Rotary] is lighting when Q2's base level goes "H"
Sub illuminaiton LED [Joystick] is lighting when Q3's base level goes "H"
Green LED are lighting when Q4's base level goes "H"
Red LED are lighting when Q5's base level goes "H"
AVDD of OEL module is turned on when Q9's base level goes "H"
SW5V the power supply of IC2, IC6 is turned on when Q8's base level goes "H"
Power of IC3 is turned on when Q10's base level goes "L"
SW3.3V the power supply of IC1, IC12 is turned on when Q16's base level goes "H"
Operation / Condition / Compatibility
Output 3.3V
Output 5.0V
Q Q
Output 5.0V
3 6 7 1 3
Output 3.3V
Output 1.27V
"L" when detection voltage goes below 3.6V or less
Controls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone
Controls logic for muting
For instraller's memory
Power control switch
Controls the source, volume, and tone
Low pass filter for DSP input
Digital signal processer
It changes into 3.3V from 5.0V
Digital to Analog converter
Low pass filter for DAC output
Panel mecha control
IN
IN1 IN2 mechanism
L L
u163
L H
H L
.
H H
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
Panel
m
WAIT
co
OPEN
CLOSE
STOP
9 9
2 8 9 9