Components Description - Kenwood KDC-3047M Service Manual

● SWITCH UNIT (X16-674x-xx)
Ref. No. Application / Function
IC1 VFD Driver
IC3 Remote Control Sensor
● ELECTRIC UNIT (X34-659x-xx)
Ref. No. Application / Function
IC1 System μ-COM
IC2 E-VOL
IC4 Power Supply IC
IC6 Power IC
IC7 RDS IC
IC8 Reset IC
IC501 Tuner IC (ATomIC)
IC900 Bolero μ-COM
IC902 3.3V/1.5V AVR
Q2,3 Servo+B AVR
Q7 CONT SW for ILLUMI&VFD+B
Q8,9 ILLUMI&VFD+B
Q10 CONT SW for ILLUMI&VFD+B
Q11,12 CONT SW for Servo+B
Q13 CONT SW for IC4
Q14 CONT SW for IC4
Q101 ACC DET
Q102 Surge DET
Q103 BU DET
Q104,105 Mute CONT
Q301 Panel 5V SW
Q701~704 Pre-out Mute SW
Q705 Mute Driver for Pre-out
Q900 3.3V SW for MECHA
Q901~903 Level Shift
Q904 1.5V SW for IC900
Q905 CD Mute SW
● CD PLAYER UNIT
Ref. No. Application / Function
IC1 CD Driver
Q101 SW Control
Q111,112 SW Power Supply Control
Q201 SW Control
Q301 Photo TR
Q302 Photo TR

COMPONENTS DESCRIPTION

Controls FM/AM tuner, CD mechanism, panel, volume and tone.
Controls the source, volume and tone.
Outputs 5Vx2, 8.3V, 10.2V, P-CON, P-ANT.
Amplifi es the front L/R and the rear L/R to 50W maximum.
RDS decoder.
Lo when detection voltage goes below 3.6V.
Tuner IC.
CD mechanism control.
Power supply for D+3.3V/1.5V.
When Q3's base goes Hi, AVR outputs 7.5V.
ON when the base goes Hi.
When Q9's base goes Hi, ILLUMI&VFD+B AVR outputs 11V.
ON when the Q7's base goes Hi.
ON when the base goes Hi.
ON when the base goes Hi.
ON when the base goes Lo.
ON when the base goes Hi during ACC is applied.
When the base goes Hi, surge voltage is detected.
ON when the base goes Hi during BU is applied.
ON when the base goes Hi.
ON when the base goes Lo.
When a base goes Hi, pre-out is muted.
ON when the base goes Lo.
When the base is Lo, 3.3V is ON.
System μ-COM (5V) ↔ Bolero μ-COM (3.3V).
When the gate is Hi,1.5V is ON.
When the base is Hi, CD is muted.
Driver for loading/eject motor, feed motor, spindle motor, focus coil and tracking coil.
For SW1.
For SW2.
For SW1.
For SW2.
KDC-3047M/MP1046/MP145/MP145CR/MP146/MP2046
/MP245/MP246AM/MP246G/MP246S/MP3046
Operation / Condition / Compatibility
Operation / Condition / Compatibility
Operation / Condition / Compatibility
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