TK-7302/7302
(
V
)
/7302H/7302H
(
V
)
16
Display unit (X54-3670-20)
Ref. No.
Part Name
Description
IC1
IC
LED driver
Q1,2
Transistor
TX/BUSY indication LED switch
Q3,4
Transistor
KEY backlight control switch
Q5,9
Transistor
LED dimmer control switch
Q6
Transistor
Indication LED switch
Q7,8
Transistor
TX/BUSY indication LED switch
D1~5
LED
KEY backlight
D20
Diode
Voltage protection
D22
LED
Indication
D23
LED
TX/BUSY indication
D33
Zener diode
Surge protection
D37
LED
LED display
TX-RX unit (X57-7680-XX)
Ref. No.
Part Name
Description
IC1
IC
PLL IC
IC2
IC
Assist fi lter
IC300
IC
DC AMP (APC)
IC301
IC
Power module
IC500
IC
FM IC
IC501
IC
RF BPF tuning voltage DC AMP
IC700
IC
MIC/MOD AMP
IC701
IC
BASEBAND IC
IC702
IC
MCU
IC703
IC
EEPROM
IC704
IC
Voltage regulator (9V)
IC705
IC
AF AMP
IC706,710
IC
Voltage regulator (3.3V)
IC707
IC
Voltage regulator (5V)
IC708
IC
Voltage detection (INT)
IC709
IC
Voltage detection (MCU reset)
Q3
Transistor
PLL Fin AMP
Q4
FET
RX VCO
Q5
FET
TX/RX VCO switch
Q6
FET
TX VCO
Q7
Transistor
TX/RX VCO switch
Q8
Transistor
Ripple fi lter
Q9,10
Transistor
VCO buffer AMP
Q11,12
FET
Assist fi lter control switch
Q300
Transistor
TX drive AMP
Q500
Transistor
RX 2nd local doubler AMP
Q501
Transistor
Discriminator control switch
Q502
Transistor
IF AMP
Q504
FET
RX 1st mixer
Q506
FET
Front-end LNA
Q507
Transistor
Discriminator control switch
Ref. No.
Part Name
Description
Q510
Transistor
Squelch input control switch
Q511
Transistor
Squelch input switch
Q701
FET
MIC mute switch
Q702
Transistor
MIC mute switch
Q703
Transistor
DET AMP LPF (D-SUB)
Q705
FET
Scrambler switch
Q707
Transistor
Ignition sense control switch
Q710
Transistor
Over voltage detect switch
Q711
Transistor
9R control switch
Q712
Transistor
9T control switch
Q713
Transistor
9R switch
Q714
Transistor
9T switch
Q715,723
FET
SP mute switch
Q717
FET
5C control switch
Q718
FET
3.3C control switch
Q719
Transistor
SB control switch
Q720
FET
SB switch
Q721
Transistor
AF AMP switch
Q722
Transistor
Over voltage detect switch
Q724
FET
Horn alert switch
Q725
Transistor
Horn alert control switch
Q728
Transistor
RS-232C RXD control
Q729
Transistor
PLL IC clock AMP
Q730
Transistor
BASEBAND IC clock AMP
Q731,732
Transistor
MCU clock AMP
D1
Diode
PLL unlock detection
D4,5,13,14
Variable capaci-
tance diode
Frequency control (TX/RX VCO)
D6~11
Variable capaci-
tance diode
Frequency control (TX/RX VCO)
D12
Variable capaci-
tance diode
Modulation control (TX VCO)
D15~17
Diode
TX/RX Fin fi lter switch
D300
Zener diode
Voltage protection
D301
Diode
TX power control
D302~305
Diode
ANT switch
D310,311
Zener diode
Voltage protection
D312
Diode
Reverse power rectifi er
D313,314
Diode
Power rectifi er
D500,501
Diode
W/N CF switch
D506,
D508~510
Variable capaci-
tance diode
RF BPF tuning
D700~710
Diode
Surge protection
D711,712
Diode
MIC AMP AGC detection
D715
Zener diode
Voltage protection
D717
Surge absorber
Voltage protection
D718
Diode
Voltage protection
D719,720
Diode
TX/RX band switch
CONPONENTS DESCRIPTION