Components Description - Kenwood KDC-MP628 Service Manual

● ELECTRIC UNIT (X34-3xxx-xx)
Ref. No. Application / Function
IC10 AUDIO8V REF POWER SUPPLY
IC60 SWITCHING REGULATOR CONTROLLER
IC80 FL+B
IC100 RESET IC
SYSTEM µ-COM
IC102
IC103 MUTE DRIVER
IC104 E2PROM
IC200 POWER CONTROL IC
IC300 E-VOL & SOURCE SELECTOR
IC400 RDS DECODER
IC450 PANEL MECHA MOTOR DRIVER
IC451 G-ANALYZER
IC500 SPECTRUM ANALYZER BUFFER AMP & AGC
±9V AVR
IC600
IC601~603 5V PREOUT AMP
IC750 POWER IC
IC800 AUDIO3.3V REF SUPPLY / SVR6.8V REF SUPPLY
Q10,11 AUDIO8V AVR
Q12 SW14V
Q20,21 B.U.5V AVR
Q22,23 SW5V
Q30,32 MOTOR+B AVR (PANEL MECHA)
Q31,33 SERVO+B AVR
Q40,42,45 PANEL5V AVR
Q41,43,44 ILLUMINATION AVR
Q50~52 SW16W (SERGE PROTECTION)
Q60 VFD (4.7V) AVR SW
SWITCHING REGULATOR FREQUENCY
Q61
CONTROL SW (IC60)

COMPONENTS DESCRIPTION

KDC-MP628/MP7028/MP728
Operation / Condition
1.27V output
VFD / Mechanism digital power supply.
OUT1 : VFD (4.7V), OUT2 : Mechanism digital (5V)
VFD power supply (57V)
"L" when detection voltage is 3.6V or less
FM/AM tuner / Changer / CD mechanism / Panel / Volume / Tone control
Mute control
Installer memory
Power control switching
Source / Volume / Tone control
IN1 IN2 PANEL MECHA
L L WAIT
L H OPEN
H L CLOSE
H H STOP
Analog gravity sensor
Spectrum analyzer buffer / Auto gain control
5V pre-out power supply
Buffer/Gained control
Front L/R and a rear L/R signal amplification
Supplying audio 3.3V reference voltage to E-VOL/LPF
Supplying SVR6.8V reference voltage to IC750 (POWER IC)
When Q11 base is "H", A8V is output
When base is "H", SW14V is output
When backup is "ON", BU5V is output
When Q23 base is "H", SW5V is output
When Q9 base is "H", 7.5V MOTOR+B is output
When Q33 base is "H", 8V SERVO+B is output
When Q42 base is "H", PANEL5V is output
When Q43 base is "H", 10.5V ILLUMI voltage is output
When Q51 base is "H", SW16V (13V) is output
When base is "H", VFD AVR is turned "OFF"
F SEL2 (BASE)
L
F SEL1
L 400kHz
(BASE)
H 650kHz
MP8029/W7031/W7031Y
H
600kHz
850kHz
3