Components Description; Final Unit (X45-373X-Xx); Display Unit (X54-3330-21); Tx-Rx Unit (X57-695X-Xx) - Kenwood TKR-750 Service Manual

TKR-750
SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION
Pin No. Name I/O
84 EMU1/OFF
85 TDO
86 TDI
87 TRST
88 TCK
89 TMS
90 NC14
91 CVDD
92 HPIENA
93 Vss
94 CLKOUT
95 HD4
96 X1
97 X2/CLKIN
98 RS
99~104 D0~D5
105 A6
106 Vss
107~109 A7~A9
110 NC15
111 Vss
112 DVDD
113~119 D6~D12
120 HD5
121~123 D13~D15
124 HD6
125 CVDD
126 NC16
127 HDS1
128 Vss
129 HDS2
130 DVDD
131~134 A10~A13
135 HD7
136~141 A14~A19
142 CVDD
143,144 NC17,NC18
20
Function
I/O Emulator 1 (to JTAG connector)
O Test data output (to JTAG connector)
I Test data input (to JTAG connector)
I Test reset (to JTAG connector)
I Test clock (to JTAG connector)
I Test mode select (to JTAG connector)
– Not used (No connection)
– VDD for core CPU (+1.8V)
I Not used (Pull up)
– GND
O Not used (No connection)
I/O HPI data bus
– 16.515MHz (System clock)
– 16.515MHz (System clock)
I DSP reset input
– Not used (No connection)
O Not used (No connection)
– GND
O Not used (No connection)
– Not used (No connection)
– GND
– VDD for I/O pins (+3.3V)
– Not used (No connection)
I/O HPI data bus
– Not used (No connection)
I/O HPI data bus
– VDD for core CPU (+1.8V)
– Not used (No connection)
I HPI data strobe 1 (Pull up)
– GND
I HPI data strobe 2 (Pull down)
– VDD for I/O pins (+3.3V)
O Not used (No connection)
I/O HPI data bus
O Not used (No connection)
– VDD for core CPU (+1.8V)
– Not used (No connection)

Final Unit (X45-373X-XX)

Ref. No. Part name
IC1 IC
IC2 IC
IC3 IC
Q2,3 Transistor
Q4 FET
Q5 FET
Q8,9 Transistor
D1 Diode
D2 Zener diode
D4,5 Diode
D6 Diode
D7 Zener diode
D8 Diode
D9 Varistor
D51,52 Diode
D53,55,56 Diode

Display Unit (X54-3330-21)

Ref. No. Part name
IC501 MOS IC
IC502~505 IC
IC506,507 IC
Q501,502 Transistor
Q503,504 FET
Q506 Transistor
Q507 FET
Q508~511 Transistor
Q512~514 FET
Q516~519 FET
Q521~525 FET
D501,502 Diode
D503~505 LED
D506,507 LED
D508~514 Diode
D601,602 Diode
D603 Varistor

TX-RX Unit (X57-695X-XX)

Ref. No. Part name
IC1,2 IC
IC3~5 IC
IC6 IC
Description
DC amplifier
Thermostat
Voltage reguator
RF amplifier
TX drive amplifier
Final amplifier
DC switch
Thermal sense
Voltage reference
RF detector
Surge absorption
Surge protector
Reverse current protector
Current protector
Reverse connection protection
RF switch
Description
MIC amplifier
Shift register
Voltage regulator
Level controller
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
DC switch
AF detector
LED
7 segment
Surge absorption
Surge absorption
Current protector
Description
Buffer amplifier
Voltage regulator
D/A converter