Components Description - Kenwood NXR-901 Service Manual

900mhz digital base-repeater ocxo unit kxk-3 m3
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Final unit (X45-3870-11)
Ref. No.
Part Name
IC1
IC
IC2
IC
IC4
IC
IC6
IC
IC7
IC
IC9
IC
IC11,12
IC
IC15
IC
IC17,18
IC
IC20
IC
IC21
IC
Q2,3
FET
Q6
FET
Q8
FET
Q14,15
FET
Q22
FET
Q501
Transistor
D4
Surge absorber
D5,6
Diode
D20~22
Diode
D23
Zener diode
D902
Varistor
Control unit (X53-4132-71)
Ref. No.
Part Name
IC1
IC
IC2,3
IC
IC4
IC
IC5
IC
IC6
IC
IC7
IC
IC8
IC
IC9
IC
IC10,11
IC
IC12
IC
IC14
IC
IC15,16
IC
IC17
IC
IC18
IC
IC19~21
IC
IC22
IC
IC23
IC
IC25
IC
IC26
IC

COMPONENTS DESCRIPTION

Description
Current monitor
OP AMP
OP AMP
OP AMP
Temperature sensor
EEPROM
Voltage regulator
OP AMP
Voltage regulator
Variable attenuator
RF power AMP
DC switch
DC switch
DC switch
DC switch
DC switch
Current drive
Surge protection
Surge protection
RF detection
Overvoltage protection
Surge protection
Description
Shift register
Multiplexer
CODEC
OP AMP
Voltage regulator
OP AMP
D/A converter
OP AMP
DC/DC converter control
OP AMP
Multiplexer
Voltage regulator
Flash memory
Voltage regulator
OP AMP
Shift register
NAND gate
Analog switch
OP AMP
Ref. No.
Part Name
IC27,28
IC
IC29
IC
IC30
IC
IC31
IC
IC32,33
IC
IC34
IC
IC35
IC
IC36
IC
IC37
IC
IC38
IC
IC39,40
IC
IC41,50
IC
Q1
Transistor
Q2,3
FET
Q4,5
Transistor
Q6,7
Transistor
Q8
Transistor
Q9
FET
Q10
Transistor
Q11
Transistor
Q12
Transistor
Q13
Transistor
Q14~17
Transistor
Q18
FET
Q19
FET
Q20~23
Transistor
Q25
Transistor
Q26
Transistor
Q27~29
Transistor
D1,2
Diode
D3~5
Diode
D6
Zener diode
D7~12
Diode
D13
Zener diode
D14~18,20,23
Diode
D24,25
Varistor
D26
Diode
D28
Diode
D29
Zener diode
D30
Diode
D31
Zener diode
D32
Diode
D33
Zener diode
D36,37
Diode
D38,39
Diode
NXR-901
Description
Buffer
AF PA
NAND gate
Divider
Buffer
MPU
EEPROM
Buffer
DSP
AND gate
Buffer
AND gate
Inverter
DC/DC converter
Clock shift switch
AF mute switch
Power switch
Power switch
Clock shift switch
Buffer AMP
Clock shift switch
Buffer AMP
DC/DC converter
Inverter
Pull up switch
Power switch
OP CONT switch
AF mute switch
Buffer AMP
DC/DC converter
Surge protector
Surge protector
Surge protector
Surge protector
Surge protector
Current protector
Diode switch
Surge protector
Surge protector
Surge protector
Surge protector
Surge protector
Surge protector
Surge protector
Diode switch
23

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