Components Description; Synthesizer Unit (X14-694X-Xx); Navi_Mute - Kenwood GX-201KHF2 Service Manual

SYNTHESIZER UNIT (X14-694x-xx)

Ref. No. Application / Function
IC11 FM diversity IC
IC12 AM noise canceller IC
IC13 2-piece ope-amp
IC14 RDS demodulation IC
IC22 Electronic volume
IC23 Ope-amp with switch
IC31~34 4-piece ope-amp
IC35 2-piece ope-amp
IC41 Power amp
System µ-com
IC81
IC82 Reset IC
IC83 I2C BUS IC
IC84 2-piece NOR circuit
IC85 EEPROM
IC86,87 Inverter circuit
Q101 Diversity switch
Q102,103 FM power supply switch
Q104,105 AM power supply switch
Q106 IF count detection
Q107 RDS data buffer
Q108 S-meter buffer
Q151,152 Noise amp
Q153 Noise amp
Q202 Mute switch
Q401,402 NAVI mute
Q403 SVR switch
Q404 SVR switch
Q601,602 Audio DC/DC power supply switch
Q604,605 Heater DC/DC power supply switch
Q606,607 DC/DC control switch
Q650 Audio DC/DC power supply switch
Q651 Heater DC/DC power supply switch
Q801 Buzzer switch
Q802 Illumination + detection
Q803 Reset output switch for F-BUS
Q804 NAVI mute switch
Q805 IF count detection
Q806 P-ANT circuit control switch
Q807 ACC detection
Q808 IGN detection
Q809 SYS_ON current buffer
Q810 Hard reset switch
Q812 BUS_OFF switch

COMPONENTS DESCRIPTION

GX-201KHF2/LHF2/RHF2/SHF2
Operation / Condition / Compatibility
FM diversity switching (Only for GX-201JHF2/KHF2)
AM noise canceller
RDS noise amp (Only for GX-201LHF2/RHF2)
RDS demodulation (Only for GX-201LHF2/RHF2)
BASS/MID/TRE, MPX, Mute, Electronic volume
Audio/NAVI switching
FIX-EQ
1/2 VCC output
4ch power amp
System control
System reset detection
F-BUS communication
For hard muting
Bug counter-measure
F-BUS control
When turned ON, turns diversity OFF (Only for GX-201JHF2/KHF2)
When FM, 8V output
When AM, 8V output
When detecting IF count, Lo output
RDS data buffer output (Only for GX-201LHF2/RHF2)
S-meter voltage output
Noise detection constant switching (Only for GX-201LHF2/RHF2)
Noise detection output buffer (Only for GX-201LHF2/RHF2)
For muting with in electronic volume
For NAVI muting at interruption
For SVR discharging
For SVR discharging at over voltage
For DC/DC audio
For DC/DC heater
For switching internal frequency
For DC/DC audio
For DC/DC heater
For buzzer
For illumination + detection
When resetting F-BUS, Hi output
When muting NAVI, Hi output
When detecting IF count, Lo output
When tuner, GND electric potential output
When ACC ON detection, Lo output
When IGN ON detection, Lo output
When SYS_ON Hi, Lo output
When HARD_RESET ON, Lo output
When F-BUS system OFF, Hi output
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