3
GX-201KHF2/LHF2/RHF2/SHF2
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SYNTHESIZER UNIT (X14-694x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC11
FM diversity IC
FM diversity switching (Only for GX-201JHF2/KHF2)
IC12
AM noise canceller IC
AM noise canceller
IC13
2-piece ope-amp
RDS noise amp (Only for GX-201LHF2/RHF2)
IC14
RDS demodulation IC
RDS demodulation (Only for GX-201LHF2/RHF2)
IC22
Electronic volume
BASS/MID/TRE, MPX, Mute, Electronic volume
IC23
Ope-amp with switch
Audio/NAVI switching
IC31~34
4-piece ope-amp
FIX-EQ
IC35
2-piece ope-amp
1/2 VCC output
IC41
Power amp
4ch power amp
IC81
System
µ
-com
System control
IC82
Reset IC
System reset detection
IC83
I2C BUS IC
F-BUS communication
IC84
2-piece NOR circuit
For hard muting
IC85
EEPROM
Bug counter-measure
IC86,87
Inverter circuit
F-BUS control
Q101
Diversity switch
When turned ON, turns diversity OFF (Only for GX-201JHF2/KHF2)
Q102,103
FM power supply switch
When FM, 8V output
Q104,105
AM power supply switch
When AM, 8V output
Q106
IF count detection
When detecting IF count, Lo output
Q107
RDS data buffer
RDS data buffer output (Only for GX-201LHF2/RHF2)
Q108
S-meter buffer
S-meter voltage output
Q151,152
Noise amp
Noise detection constant switching (Only for GX-201LHF2/RHF2)
Q153
Noise amp
Noise detection output buffer (Only for GX-201LHF2/RHF2)
Q202
Mute switch
For muting with in electronic volume
Q401,402
NAVI mute
For NAVI muting at interruption
Q403
SVR switch
For SVR discharging
Q404
SVR switch
For SVR discharging at over voltage
Q601,602
Audio DC/DC power supply switch
For DC/DC audio
Q604,605
Heater DC/DC power supply switch
For DC/DC heater
Q606,607
DC/DC control switch
For switching internal frequency
Q650
Audio DC/DC power supply switch
For DC/DC audio
Q651
Heater DC/DC power supply switch
For DC/DC heater
Q801
Buzzer switch
For buzzer
Q802
Illumi detection
For illumi detection
Q803
Reset output switch for F-BUS
When resetting F-BUS, Hi output
Q804
NAVI mute switch
When muting NAVI, Hi output
Q805
IF count detection
When detecting IF count, Lo output
Q806
P-ANT circuit control switch
When tuner, GND electric potential output
Q807
ACC detection
When ACC ON detection, Lo output
Q808
IGN detection
When IGN ON detection, Lo output
Q809
SYS_ON current buffer
When SYS_ON Hi, Lo output
Q810
Hard reset switch
When HARD_RESET ON, Lo output
Q812
BUS_OFF switch
When F-BUS system OFF, Hi output
COMPONENTS DESCRIPTION