Section 1C - Icom IC-04A Service Manual

SECTION
11
1C,
TRANSISTOR
AND
DIODE
PIN
CONNECTIONS
• ICs
/IPC358C
(Dual
Driver)
IC101
TC4071BP
(Quad
2-Input
OR
Gate)
IC102
TC4069UBP
(Hex
Inverter)
IC103
Vdo
R
pi]
R
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a
Vss
SB1250H-G
(3-Terminal
Voltage
Regulator)
IC104
TA75393P
(Dual
Comparator)
IC105
LR4087
(DTMF
Encoder)
IC501
(#05, #09)
TC4094BP
(8-Stage Shift-and-Store
Bus
Register)
Subaudible
Tone
Encoder)
IC502
(#06,
#09) IC603
(#05,
#09)
^
g TONE
OUT
STROBE
E
—
^
XMRT SWITCH
E 3
SINGLE
TONE
INH SERIAL
IN
E
CoLl
["
D
I^OWI
CLOCK
E
Cou
E 3
f*OW2
OiE
Coi-3
1^ Qj
V— ^ 3
RoW4
Qsg
OSC
IN
g
g
MUTE OUT
CUE
OSC OUT g 3
CoL4
Vss
g
TC5082
(Oscillator
and
12-Stage
Driver)
(C601
(#04)
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11-1