KTC-HR100
3
●
DIGITAL TUNER UNIT (X14-9310-10)
Ref. No.
Application/Function
Operation/Condition/Compatibility
IC1
8V regulator
Power supply for audio system
IC2
Analog Switch
Audio Switch
IC3,4
Op-amp
Audio amp 2 for CD-CH signal
IC5
Op-amp
Audio amp 2 for demodulated signal
IC6
DC/DC converter control
Power supply for 3.3,2.5V
IC7
Op-amp
Buffer amp for audio signal
IC8
Op-amp
Convert for audio bias circuit
IC9
1.25V regulator
Power supply for IDM
IC11
µ
-com
-
IC12
5V regulator
Power supply for A1 (tuner module)
IC13
Reset IC
-
IC14
5V regulator
Power supply for BU 5V
IC15
1kbit EEPROM
Back-up data memory
IC16
Dual 2 input OR GATE
-
IC17
8.5V regulator
Power supply for A1 (tuner module)
IC18
Op-amp
Comparator for voltage detect
Q1
Mute
For right mute
Q2,3
SW
For main power supply SW
Q4
Mute
For left mute
Q5
SW
For mute on : mute
Q6,7
SW
For audio source switch
Q8
DC/DC converter
For 3.3,2.5V power supply
Q10
SW
For B.U detect on : detect
Q11
SW
For B.U detect on : no-detect
Q12
Inverter
For B.U detect mute
Q14
SW
For 5L CH-CON signal
Q16
SW
For reset
Q17
SW
For CD-CH reset
Q18
Amplifier
IF amp 2
Q19
Amplifier
Signal Amp 2 for AM-IF signal (narrow band)
Q20
Inverter
For AM filter
Q21
Inverter
For FM filter
Q22
Amplifier
Signal Amp for FM-IF signal (wide band)
Q23
Amplifier
Signal Amp for AM-IF signal (wide band)
Q24
Amplifier
Signal Amp for FM-IF signal (narrow band)
Q25
Amplifier
Signal Amp 1 for AM-IF signal (narrow band)
Q26
SW
For FM filter
Q27
5v to/from 3.3v level converter
For I2C data
Q28
5v to 3.3v level converter
For I2C clock
Q29
Amplifier
IF amp 1
Q33
SW
For AM filter
Q35
SW
For B.U detect mute on : mute
Q36
Level converter
For Blend signal
Q37
SW
For tuner I2C SCL signal
COMPONENTS DESCRIPTION
