Kenwood KDC-MP5033U, Service Manual

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KDC-MP5033U/MP532U
KDC-W534UA/UAY/UG/UGY/W5534U/UY
COMPONENTS DESCRIPTION
●
ELECTRIC UNIT (X34-412x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 Power Supply IC DC5V x 1, 7.9V x 1, 8.1V x 2, 10.2V x 1, P-CON, P-ANT output.
IC2 Power Supply IC DC5V for CD mechanism unit and USB.
IC3 Hi-side SW USB5V on when the pin 1 goes “Hi”.
IC10 E-VOL & Tuner E-VOL, Tuner, Stereo decoder.
IC101 System
µ
-COM Controls system.
IC102 Reset IC “Lo” when detection voltage is below 3.6V.
IC103 E2PROM Saves and loads for tuner adjustment data.
IC201 Power IC Amplifies signal.
IC400 RDS Decoder Decodes RDS.
Q1 SERVO+B AVR Darlington connection with Q2. (Current buffer)
Q2 SERVO+B AVR Outputs 7.5V.
Q3 14V SW “ON” when the base goes “Hi”.
Q4 VFD+B & LED AVR Darlington connection with Q5. (Current buffer)
Q5 VFD+B & LED AVR Outputs 11V.
Q6 VFD+B & LED SW “ON” when the base goes “Hi”.
Q7 Non Back Up 5V SW “ON” when the base goes “Lo”.
Q8 Control SW for IC1
Q9 Serge Protect for IC2 Darlington connection with Q5. (Current buffer)
Q10 Serge Protect for IC2 Outputs 15V when back up voltage is over 16V.
Q11 Control SW for IC2 IC2 turns on when the base goes “Lo”.
Q12 FL FIL Voltage SW FL FIL voltage ON/OFF SW.
Q13 Control SW for Q12 Q12 turn on when the base goes “Hi”.
Q51 Serge DET “ON” when the base goes “Hi”.
Q52 BU DET “ON” when the base goes “Hi” during BU is applied.
Q53 ILLUMI SW “ON” when the base goes “Hi”.
Q54 ACC DET “ON” when the base goes “Hi” during ACC is applied.
Q101 PANEL5V SW “ON” when the base goes “Lo”.
Q102 Control SW for D111 D111 is ON when the base goes “Hi”.
Q103,104 Mute Control “ON” when the base goes “Hi”.
Q105 Mute Driver for Preout “ON” when the base goes “Lo”.
Q201,202 DC Offset DET SW
“ON” when the base goes “Lo”. (At that time, IC201’s SP-OUT DC is
separated)
Q203 DC Offset DET
“ON” when the base goes “Hi”. (At that time, Q201 and Q202’s outputs
are separated)
Q204 SVR Discharge IC201’s pin 10 discharges when the base goes “Hi”.
Q251 Mute SW for Lch Preout Pre-output is muted when the base goes “Hi”.
Q252 Mute SW for Rch Preout Pre-output is muted when the base goes “Hi”.
Q400 Buffer IC10 QUAL output buffer.
Q501 AM RF Amplifier Adjusts for gain.
Q502 FM RF Amplifier Amplifies RF.
Q503,504 AFS Control Controls AFS time.