Kenwood TK-373G, Руководство по обслуживанию

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TK-373G
16
SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS
Pin Port
I/O Function
No. Name
49 A19 - Not used
50-59 A18-A9 - Flash memory address bus
60 VCC - +5V
61 A8 - Flash memory address bus
62 VSS - GND
63-70 A7-A0 - Flash memory address bus
71-75 KIN0-KIN4 I Key scan input
76 PLLUL O PLL unlock detect input unlock: L
77 PLLSTB O PLL strobe output Latch: L
78 SAVE I Not used
79-86 D7-D0 - Flash memory data bus
87 KEYAD I MONI LAMP key input
88 BATT I Battery voltage input
89 RFDAT O PLL data output
90 RFCLK O PLL clock output
91 NC - NC
92 RSSQL I Receive signal strength indicator input
93 ANLSQL I Analog squelch level input
94 AVSS - GND
95 TOI I QT/DQT/LTR signal input
96 VREF - Reference voltage input
97 AVCC - GND
98 DTMPD O Not used
99 DTMCLK O Not used
100 DTMDAT I Not used
Pin
Port I/O Function
No.
Shift register 2:BU4094BCFV(IC6)
■
Pin function
4 5MC O 5MC control Power on: L
5 5RC O 5R control Power on: L
6 5TC O 5T control Power on: H
7 SPMUTE O AF amp power supply control Power on: H
11 AUX6 O Option board port 6 Auxiliary Output
12 AUX5 O Option board port 5 Link complete
13 LCDBLK O LCD back light Back light on: L
14 RX O RX/TX VCO SW RX: L
4 W/N O Wide/Narrow SW Narrow: L
5 MUTE O RX audio/MIC mute Mute: L
6 NC O NC
7 LED0 O RED LED LED lights: H
11 BSHIFT O Beat Shift Shift on: H
12 REG2 O Base Band IC inter register select 2
13 REG1 O Base Band IC inter register select 1
14 LED1 O GREEN LED LED lights: H
Pin
Port I/O Function
No.
Shift register 1:BU4094BCFV(IC5)
■
Pin function
DESCRIPTION OF COMPONENTS
DISPLAY UNIT (X54-3250-11)
IC501 IC LCD driver
Q501 Transistor Current driver / LCD back light LED AVR
Q502 Transistor DC switch
D505 Diode Speed up
D506 LED LCD back light
D507 Diode Voltage reference
D511 LED LCD back light
D515,516 LED LED /Key pad back light
Ref. No. Use/Function Operation/Condition
IC1 IC RF Power Module
IC2 IC PLL system
IC3 IC Comparator (APC)
IC4 IC FM IF system
IC5,6 IC Shift register / Output expander
IC7 IC Voltage regulator / 5V
IC8 IC Voltage detector / Reset
IC9 IC Voltage detector / INT
IC10 IC EEPROM
IC11 IC AF Power amplifier
IC12 IC Flash memory
IC13 IC Microprocessor
IC14 IC Audio processor
IC15(1/2) IC -
IC15(2/2) IC AF Pre amplifier
IC16(1/2) IC Bias buffer
IC16(2/2) IC AF Buffer amplifier
IC17 IC D/A converter (TX AF adjustment)
IC19 IC Active filter / For LSD in
Q1 Transistor PLL IC fin amplifier
Q2 Transistor VCO oscillation (TX)
Q3 Transistor RF Buffer amplifier
Q4,5 Transistor RF amplifier
Q6 Transistor RF amplifier / TX driver
Q7 FET DC switch
Q8,Q9 Transistor DC switch
Q10 FET VCO oscillation (RX)
Q11 Transistor Ripple filter
Q12 Transistor Tripler
Q13 Transistor DC switch
Q14 Transistor 2 nd IF W/N switch sets to on when Narrow
Q15 Transistor DC switch
Q16 Transistor DC switch / 5R
Q17 Transistor 2 nd IF W/N switch sets to on when Wide
Q18 Transistor DC switch / 5T, Save
Q19 FET Mixer
Q20,Q21 Transistor DC switch / 5T, Save
Q22 Transistor IF amplifier
Q23 Transistor DC switch / W/N audio amplitude adjust
Q24 Transistor DC switch / LED (Red)
Q25 Transistor DC switch / LED (Green)
Ref. No. Use/Function Operation/Condition
TX-RX UNIT (X57-650X-XX)