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KDC-W9537U/W9537UY
KDC-X9006U/X991
Ref. No.
Application / Function
Q22,23
Switch5V
Q30,31
Panel Mecha Motor AVR
Q32
Motor / Servo enable
Q33,34
CD Servo AVR
Q40~42
OEL8V AVR
Q43
Panal5V Discharge switch
Q50~52
Illumination AVR
Q70~72
Switch16V (Surge protection)
Q80,81
Panel5V switch
Switching Regulator Frequency
Q83
control switch
Q84
Panel AVR enable
Q85
USB/Digital AVR enable
Q86,88,89
SoC Protection AVR
Q100,101,103 Audio Ref. circuit AVR
Q104,105
Ripple discharge driver
Q120
Backup detect switch
Q122
ACC detect switch
Q123
Surge detect switch
Q150,151
Power antenna switch
Q160
Ext. Amp control Buffer
Q180
Small lamp detect switch
Q320
Spectrum analyzer AGC
AVR for IC350
Q350,351
* 5VPreout Amp "-AVR"
Q352~354
5VPreout Amp AVR "-9V"
Q356~358
5VPreout Amp AVR "+9V"
Q361
Preout mute Driver
Q362
Preout mute Driver
Q363
Preout mute switch
Q364
Preout mute switch
Q365
Preout mute switch
Q366
Preout mute switch
Q367
Preout mute switch
6
COMPONENTS DESCRIPTION
Active time is "Power on".
Active time is "Power on".
Active time is "Power on".
Active time is "Power on".
Active time is "Power on"
Use time is only 100msec, after "Panel detect".
Active time is "Power on".
Active time is "Power on".
Use time is panel µ-com Low power mode.
* Normal function OFF.
1pin, 2pin : Freq.
L, L : 430kHz
When this Tr does off, "Panel AVR" is on.
When this Tr does off, "USB/Digital AVR" is on.
Use time is only 200msec, after "BUDET OFF".
* "BUDET OFF" is too high or low B.U voltage.
IC101 → Power IC "Ripple".
Discharged Power IC "Ripple".
* Power off, Standby, etc.
Check of Backup voltage. It is on if good.
Check of ACC voltage. It is on if good.
Check of over input voltage. Detects it in on.
Active time is "AM/FM" source.
* Exception RDS/RBDS models.
It is buffer for "System µ-com" output.
Check of small lamp. Detects it in on.
When this circuit has an excessive input, a return is hung and an output is reduced.
Active time is "Power on".
Q352 and 353 works as a differential amplifi er, Q354 works as a driver and -9.1V is
supplied to OPAmp for preout.
Q356 and 357 works as a differential amplifi er, Q358 works as a driver and +9.4V is
supplied to OPAmp for preout.
(Front, Rear) When this Tr does on, it is mute.
(SW) When this Tr does on, it is mute.
SW Rch
SW Lch
Front Lch
Rear Lch
Front Rch
Operation / Condition / Compatibility
L, H : 600kHz
H, L : 650kHz
H, H : 820kHz
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