3
KDC-1032/132/132CR
KDC-133/233/234SGY
COMPONENTS DESCRIPTION
●
ELECTRIC UNIT (X34-419x-xx)
Ref. No.
Application / Function
Operation / Condition
IC1
System
µ
-COM
System controller
IC4
Power IC
Signal amplifier
IC7
Power supply IC
DC5Vx1, 7.9x1, 8.1Vx2, 10.2Vx1, P-CON, P-ANT output
IC8
Mute logic IC
Controls for mute operation
IC10
E-VOL & Tuner
E-VOL, tuner, stereo decoder
IC11
Reset IC
“L”: detection. Voltage is below 3.6V
IC12
E2PROM
Saves and loads for tuner adjustment data
Q10
BU detection
ON when the base goes “Hi” during BU is applied
Q20
ACC detection
ON when the base goes “Hi” during ACC is applied
Q40
Mute driver for PRE OUT
ON when the base goes “Lo”
Q50
5V SW
ON when the base goes “Lo”
Q51
Control SW for SERVO+B
ON when the base goes “Hi”
Q53
Control SW for IC3
ON when the base goes “Hi”. Output voltage is 10.3V
Q55
SERVO+B AVR
Output voltage is 7.5V
Q70
Surge detection
ON when the base goes “Hi”
Q102
Panel 5V SW
ON when the base goes “Lo”
Q223
Mute SW for Lch PRE OUT
Pre-output is muted when the base goes “Hi”
Q224
Mute SW for Rch PRE OUT
Pre-output is muted when the base goes “Hi”
Q251
IC4 SVR discharge SW
ON when the base goes “Hi”
Q501
AM RF amplifier
Adjusts for gain
Q502
FM RF amplifier
RF amplifier
●
SWITCH UNIT (X16-356x-xx)
Ref. No.
Application / Function
Operation / Condition
IC1
LCD driver
IC2
Remote control sensor
KDC-132CR only
Q1
Key scan start SW
ON when the base goes “Lo”
●
DAUGHTER UNIT (X89-2690-10) : KDC-1032 only
Ref. No.
Application / Function
Operation / Condition
Q221,222
2-PREOUT MUTE
ON when the base goes “Hi”
Q225
2-PREOUT MUTE
ON when the base goes “Hi”
●
CD PLAYER UNIT (X32-5840-00)
Ref. No.
Application / Function
Operation / Condition
Generation of RF signal based on the signals from the APC circuit and pickup, and
IC1
RF AMPLIFIER responding
generation of servo error (focusing error and tracking error) signals.
to CD-RW
Detection of dropout, anti-shock, track crossing and off-tracking conditions, included
gain control function during CD-RW.
