Components Description; Switch Unit (X16-2490-10); Electric Unit (X34-308X-Xx) - Kenwood KDC-MP425 Service Manual
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- Instruction manual (116 pages) ,
- Service manual (34 pages) ,
- Instruction manual (45 pages)
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KDC-MP425/MP6026
KDC-W6027/W6027Y
QQ
3 7 63 1515 0
SWITCH UNIT (X16-2490-10)
Ref. No.
Application / Function
IC1
LCD Driver
IC2
Remote Control IC
Q2
REMO ON SW
Q3
Key Illumination SW (Green)
Q4
Key Illumination SW (Red)
Q5
Dimmer Control
ELECTRIC UNIT (X34-308x-xx)
Ref. No.
Application / Function
System µ-COM
IC1
IC2
E.Vol & N.C.MPX
TE
IC3
Power Supply IC
L 13942296513
IC4
Power IC
IC6
Muting logic IC
IC7
RDS decoder
IC8
Reset IC
IC9
SW Regulator
Q1
Serge Detection
Q2
BACK-UP Detection
Q3
ACC Detection
Q4
SW 5V
Q21
Servo Regulator
Q22
Servo SW
Q23
Control Power Supply IC
www
Q31
Dimmer Control
Q41
SW Regulator Control
.
Q101
Composite signal buffer
4
COMPONENTS DESCRIPTION
Drives LCD
Controls the unit
The power supply of IC2 is turned on when base level goes "L"
Lights Green key-illumination when base level goes "H"
Lights Red key-illumination when base level goes "H"
Lights LCD Back Light when base level goes "H"
Controls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone.
Controls the source, volume, tone and FM multiplex detector.
Bu5V (5V), Audio8V (8V), FM+B (8V), AM+B (8V), P-CON, ANT-CON
SW1
1.5~3.0
3.5~5.0
7.0~
SW2
2.0~3.0
4.0~
Amplifies the front L/R and the rear L/R to 50W maximum.
Controls logic for muting.
"L" when detection voltage goes below 3.6V or less.
Power Supply for MP3
"L" when the back-up voltage becomes more than 24V (momentary power down).
"H" when the back-up voltage becomes less than 24V.
"L" when B.u is present.
"H" when B.u is absent or momentary power down is detected.
"L" when Acc is present.
ON when the base is "L".
Dimmer ON when the base is "H".
x
ao
u163
y
i
2 9
8
Operation / Condition / Compatibility
Operation / Condition / Compatibility
OUT
Audio ON
Audio P-CON ON
Q Q
3
6 7
1 3
1 5
Audio P-CON, P-ANT ON
OUT
ILL FM ON
ILL AM ON
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
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