Components Description - Kenwood KDC-MP332 Service Manual

ELECTRIC UNIT (X34-417x-xx)
Ref. No. Application / Function
System µ-com
IC1
IC3 Power Supply
IC4 Power IC
IC6 Mute logic
IC7 RDS Decoder
IC8 Reset IC
IC9 MECHA+B
IC10 E-VOL.& Tuner
IC11 E2PROM
IC15 LED & VFD+B
Q51 Serge Det.
Q52 B.U. Det.
Q53 ACC Det.
Q54 BU5V SW
Q71 Control SW for SERVO+B
Q72,73 SERVO+B AVR
Q74 Control SW for IC3
Q91 Control SW for IC9
Q151 Panel 5V SW
Q152 FL+B SW
Q153 FL+B SW
Q156 EJECT ILLUMI SW
Q330 Mute driver for Q351, Q352
Q351 Mute SW for Lch PREOUT
Q352 Mute SW for Rch PREOUT
Q501 AM RF Amplifier
SWITCH UNIT (X16-349x-xx)
Ref. No. Application / Function
IC2 Remote Control IC
Q4,5 SW5V
Q10 GREEN LED SW
Q12 GRID1 SW
Q13 GRID2 SW
Q14 GRID3 SW
Q15 RED LED SW
Q20 Key Scan Start SW

COMPONENTS DESCRIPTION

System controller.
DC5V x 1, 7.8V x 1, 8.0V x 1, 10.2V, P-CON, P-ANT output.
Signal amplifier.
Controls for mute action.
RDS decoder.
"L": detection voltage below 3.6V
Outputs 5V for CD mechanism.
E-VOL, Tuner, Stereo decoder.
Saves and loads for tuner adjustment data.
Outputs 11.25V for LED and VFD.
ON when the base goes "Hi".
ON when the base goes "Hi" during BU applied.
ON when the base goes "Hi" during ACC applied.
ON when the base goes "Lo".
ON when the base goes "Hi".
Output voltage is 7.5V.
ON when the base goes "Hi". Output voltage is 10.2V
ON when the base goes "Hi".
ON when the base goes "Lo".
ON when the base goes "Lo".
ON when the base goes "Hi".
ON when the base goes "Hi".
ON when the base goes "Lo".
Audio pre-output is muted when the base goes "Hi".
Audio pre-output is muted when the base goes "Hi".
Adjusts for gain.
The base of Q4 goes "L" when the base of Q5 is "H" and the power supply of IC2 is turned on.
GREEN LED is turned on when the base level of Q10 goes "H".
When the base of Q12 is "L", the current is supplied to G1.
When the base of Q13 is "L", the current is supplied to G2.
When the base of Q14 is "L", the current is supplied to G3.
RED LED is turned on when the base level of Q15 goes "H".
Key scan starts when the base of Q20 goes "H".
KDC-MP332/MP5033
KDC-W534/W534Y
Operation / Condition
Operation / Condition
3