Description Of Components - Kenwood TKR-750 Service Manual

SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS
Pin No. Name I/O
80 NC13 – Not used (No connection)
81 HD3 I/O HPI data bus
82 TOUT0 – Not used (No connection)
83 EMU0 I/O Emulator 0 (to JTAG connector)
84 EMU1/OFF I/O Emulator 1 (to JTAG connector)
85 TDO O Test data output (to JTAG connector)
86 TDI I Test data input (to JTAG connector)
87 TRST I Test reset (to JTAG connector)
88 TCK I Test clock (to JTAG connector)
89 TMS I Test mode select (to JTAG connector)
90 NC14 – Not used (No connection)
91 CVDD – VDD for core CPU (+1.8V)
92 HPIENA I Not used (Pull up)
93 Vss – GND
94 CLKOUT O Not used (No connection)
95 HD4 I/O HPI data bus
96 X1 – 16.515MHz (System clock)
97 X2/CLKIN – 16.515MHz (System clock)
98 RS I DSP reset input
99~104 D0~D5 – Not used (No connection)
105 A6 O Not used (No connection)
106 Vss – GND
107~109 A7~A9 O Not used (No connection)
110 NC15 – Not used (No connection)
111 Vss – GND
112 DVDD – VDD for I/O pins (+3.3V)
113~119 D6~D12 – Not used (No connection)
120 HD5 I/O HPI data bus
121~123 D13~D15 – Not used (No connection)
124 HD6 I/O HPI data bus
125 CVDD – VDD for core CPU (+1.8V)
126 NC16 – Not used (No connection)
127 HDS1 I HPI data strobe 1 (Pull up)
128 Vss – GND
129 HDS2 I HPI data strobe 2 (Pull down)
130 DVDD – VDD for I/O pins (+3.3V)
131~134 A10~A13 O Not used (No connection)
135 HD7 I/O HPI data bus
136~141 A14~A19 O Not used (No connection)
142 CVDD – VDD for core CPU (+1.8V)
143,144 NC17,NC18 – Not used (No connection)
Final Unit (X45-3620-XX)
Function
Ref No.
IC1
IC2
IC3
Q2,3
Q4
Q5
Q7
Q8,9
D1
D2
D3
D4,5
D6
D7
D8
D9
D51,52
Display Unit (X54-3330-20)
Ref No.
IC501
IC502~505
IC506,507
Q501,502
Q504
Q506
Q507
Q508
Q510,511
Q512~514
Q516~519
Q521~525
D501,502
D503~505
D506,507
D508~514
D601,602
D603
TKR-750
Part name Description
IC DC amplifier
IC Thermostat
IC Voltage regulator
Transistor RF amplifier
FET TX drive amplifier
FET Final amplifier
FET RF switch
Transistor DC switch
Diode Thermal sensor
Zener diode Voltage reference
Diode Surge absorption
Diode RF detector
Diode Surge absorption
Zener diode Surge protector
Diode Reverse current protection
Varistor Current protector
Diode Reverse connection protection
Part name Description
MOS IC MIC amplifier
MOS IC Shift registers
MOS IC Voltage regulator
Transistor Level controller
FET DC switch
Transistor DC switch
FET DC switch
Transistor DC switch
Transistor DC switch
FET DC switch
FET DC switch
FET DC switch
Diode AF detector
LED LED
LED 7 segment
Diode Surge absorption
Diode Surge absorption
Varistor Current protector
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