Components Description - Kenwood NX-411 Service Manual

Display unit (X54-3770-10)
Ref. No. Part Name
IC102 IC
IC105 IC
D1~4 LED
D5~10 LED
D11~14 Diode
D15~18 LED
TX-RX unit (X57-8120-10)
Ref. No. Part Name
IC1,2 IC
IC3 IC
IC4 IC
IC5 IC
IC6,7 IC
IC8 IC
IC9 IC
IC10 IC
IC11 IC
IC12~14 IC
IC15 IC
IC16 IC
IC17 IC
IC18 IC
IC19 IC
IC20 IC
IC21,22 IC
IC201 IC
IC202 IC
IC203 IC
IC204 IC
IC205 IC
IC206 IC
IC207 IC
IC208 IC
IC209 IC
IC210 IC

COMPONENTS DESCRIPTION

Description
LCD contrast
Voltage doubling inverter
6key backlight
12key backlight
12key control
LCD backlight
Description
OP AMP (AF)
DA converter
OP AMP (MIC)
OP AMP (AF)
Logic switch (AF)
Logic switch (MIC)
Logic switch (AF)
OP AMP (AF)
OP AMP (RF control)
OP AMP (AF)
Logic switch (AF)
OP AMP (AF)
SP AMP
AVR (50U)
SP AMP
Logic AND
Voltage level conversion
AVR (33A)
DC/DC converter (15M)
AVR (33M)
AVR (5A)
AVR (50C)
DC/DC converter (3.8V)
AVR (33C)
OP AMP (50T)
Voltage detector
AVR (Backup)
Ref. No. Part Name
IC301,302 IC
IC303 IC
IC304 IC
IC305 IC
IC306 IC
IC307 IC
IC308 IC
IC309 IC
IC310 IC
IC311 IC
IC312 IC
IC502 IC
IC503 IC
IC504 IC
IC505 IC
IC601 IC
IC801 IC
IC802 IC
IC803 IC
IC804 IC
Q1 FET
Q3,4 Transistor
Q5 FET
Q6 FET
Q7,8 FET
Q9 FET
Q10,11 Transistor
Q12 Transistor
Q13 FET
Q201~205 FET
Q206~208 Transistor
Q209,210 FET
Q211~214 Transistor
Q301~303 Transistor
Q304 FET
Q305 Transistor
Q306 FET
Q501 Transistor
Q502 FET
Q503 Transistor
Q504 FET
Q505 FET
Q506 FET
Q507 FET
Q508~510 Transistor
NX-411
Description
Bus switch (LCD)
Flash memory
DSP
SRAM
Reset
Logic AND
RTC
ASIC
Buffer AMP (18.432MHz)
I/O expander
Logic AND
Temperature detection
PLL IC
OP AMP (PLL)
OP AMP (RF control)
APC AMP
Buffer AMP (RX)
IF IC
OP AMP (RF control)
Mixer (RX)
DC switch
MIC AGC
DC switch
DC switch (MIC)
DC switch
DC switch (MIC)
DC switch
Noise AMP
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
Buffer AMP (CV)
DC switch
VCO
DC switch
DC switch (VCO)
VCO
Buffer AMP (VCO)
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