Kenwood NX-200 Service Manual page 20

NX-200(G)
TX-RX unit (X57-8950-12)
Ref. No. Part Name
IC1 IC
IC2 IC
IC3 IC
IC4 IC
IC5 IC
IC100 IC
IC200,201 IC
IC202 IC
IC203 IC
IC400 IC
IC401 IC
IC402 IC
IC403 IC
IC404 IC
IC501 IC
Q1,2 Transistor
Q3 Transistor
Q4 Transistor
Q6 Transistor
Q7 FET
Q8,10 FET
Q9 FET
Q11 Transistor
Q12 FET
Q13 FET
Q100 Transistor
Q102 FET
Q103 FET
Q104,105 Transistor
Q106 FET
Q107,109 FET
Q110 Transistor
Q201 Transistor
Q202 Transistor
Q203 FET
Q204 FET
Q401 FET
Q402 FET
Q403 FET
Q404 FET
Q405 Transistor
Q406 Transistor
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COMPONENTS DESCRIPTION
Description
Temperature sensor
AF AMP for VCO tune
PLL IC
OP AMP (VCO MOD/APC)
DC AMP for TCXO MOD
Auto power control
DC AMP for BPF
FM IC
Buffer
Voltage regulator (50C)
50T control
DC/DC converter
Voltage regulator (33C)
OP AMP (RSSI/VAGC)
LNA (for GPS)
Buffer AMP switch
Ripple fi lter
Buffer AMP
Ripple fi lter
T/R switch
VCO oscillation
T/R switch
Buffer AMP
Buffer AMP
Buffer AMP switch
Buffer AMP
Drive AMP
Pre-fi nal AMP
APC switch
RF fi nal AMP
APC switch
APC switch
2nd Local tripler
IF AMP
Mixer
RF AMP
50R switch
50IF switch
SB3 switch
DC/DC converter switch
50T switch
TX/RX LED switch
Ref. No. Part Name
D1 Diode
D2,3 Diode
D4 Diode
D5,6 Diode
D7 Diode
Variable
D8,9
capacitance
D12~17
diode
Variable
D18 capacitance
diode
D100 Diode
D103 Zener diode
D104,105 Diode
D106 Zener diode
D201 Diode
Variable
D204,205,
capacitance
D207,208
diode
D209 Diode
D211 Diode
D213 Diode
D400 Diode
D401 Diode
D402 LED
D403 Diode
D501 Diode
D502 Diode
Sub (GPS) unit (X58-5240-10)
Ref. No. Part Name
Electric circuit
IC1
module
IC2 IC
IC4 IC
D2 Diode
Description
Ripple fi lter
f-in RF switch
Bypass diode
f-in RF switch
Ripple fi lter
Frequency control
TX modulation
Local switch
APC switch
Antenna switch
APC protect
Local switch
Vari-cap tune
Antenna switch
Antenna switch
Reverse protection
Reverse protection
50T control
TX/RX LED
Reverse protection
Cllpper
Cllpper
Description
GPS receiver module
Buffer
Voltage regulator
Backfl ow prevention