Components Description - Kenwood NX-300 Service Manual

Control unit (XC1-0200-XX)
Ref. No. Part Name
IC1 IC
IC101 IC
IC103 IC
IC104 IC
IC105 IC
IC106 IC
IC107 IC
IC108 IC
IC109 IC
IC401,402 IC
IC403 IC
IC404 IC
IC406 IC
IC407 IC
IC408 IC
IC409 IC
IC411 IC
IC412,413 IC
IC414 IC
IC415 IC
IC416 IC
IC417,418 IC
IC701 IC
IC702 IC
IC703 IC
IC704 IC
IC705 IC
IC706 IC
IC707 IC
IC708 IC
IC709 IC
IC710 IC
IC711 IC
IC712 IC
IC713 IC
IC714 IC
IC715,716 IC
IC717 IC
IC719 IC
Q1,2 Transistor
Q3 FET
Q4 FET
Q5 FET
Q101,102 Transistor

COMPONENTS DESCRIPTION

Description
LCD contrast
Flash memory
SRAM
2 input AND gate
Reset
RTC
Buffer
ASIC
2 input AND gate
Bus switch
Voltage doubling inverter
Voltage regulator (33M)
Voltage regulator (33A)
DC/DC converter
AF AMP
AF switch
Voltage regulator (50U)
Audio AMP
Reset
2 input AND gate
Voltage regulator
Dual bus buffer
I/O control
APC LPF
D/A converter
RX AF LPF
Modulation LPF
MIC AMP
RX AF switch
Voltage regulator (5A)
Sidetone mute
MOD/MIC summing AMP
SQL BPF/SQL DC AMP
MIC switch
1.65V REF/RX summing AMP
OPT switch
VOX AMP
DC/DC converter (15M)
DSP
LCD backlight switch
LCD backlight switch
MIC mute control
MIC mute switch
12key backlight switch
NX-300(G)
Ref. No. Part Name
Q103 FET
Q401,402 FET
Q403 Transistor
Q404 FET
Q405 FET
Q406,407 Transistor
Q408,409 Transistor
Q410 FET
Q411 FET
Q412 FET
Q413~415 Transistor
Q702 FET
Q703 FET
Q704 Transistor
Q705,706 Transistor
Q707 FET
D1,2 LED
D3,4 LED
D5,6 LED
D7,8 LED
D9,10 LED
D11 Diode
D12~16 Diode
D17~21 Zener diode
D22,23 Diode
D101 Diode
D102 Diode
D401~404 Diode
D405,406 Diode
D407 Diode
D408 Diode
D409,410 Diode
D411 Diode
D412 Diode
D413 Diode
D414,415 Diode
D416 Diode
D417 Diode
D701 Diode
D702 Diode
D703,704 Diode
D705 Diode
D706 Diode
D707 Diode
Description
12key backlight switch
Level converter
SB2 switch
SB2 switch control
AF AMP switch
Voltage regulator (AF AMP)
DC switch
DC switch
Level converter
DC switch control
DC switch
Tone switch
W/N noise switch
SQL noise AMP
MIC AGC
MIC mute
12key backlight
LCD backlight
12key backlight
LCD backlight
12key backlight
LCD backlight switch
Reverse current prevention
Surge absorption
Surge absorption
12key backlight switch
Reverse current prevention
12key control
DC/DC converter
Over voltage prevention
DC/DC converter control
SP control
RTC BATT control
DC switch control
RTC BATT control
Reverse current prevention
33M control
33A control
5A switch
PLD control
Detector
Noise detector
VOX detector
VOX
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