Icom IC-F21S Two-Way Radio User Manual


 
12 - 2
12-2 SW-A AND SW-B UNITS
SW-A UNIT
TP76N00N-15F-10KA-2251
R1
Q1 XP4216
R3 560
R2 330
DS1
LNJ107W5PRW
C
1
1
2
2
3
4
4
8
5
S1
CP10
CP11
CP12
CBI0
CBI1
CP13
CBI2
CBI3
CP8
HV
F1
6
5
4
3
2
1
CP3
CP4
CP5
CP6
CP2
CP9
CBI0
VOLIN
VOLOUT
VCC
RLED
TLED
GND
CP1
G
R
RX (SQL OPEN) 4.1 V
RX (SQL OPEN) 0 V
RX (SQL OPEN) 2.1 V
RX (SQL OPEN) 4.8 V
TX 4.8 V
RX (SQL OPEN) 0 V
TX 2.4 V
TX 0 V
TX 4.1 V
TX 0 V
TX 0 V
RX (SQL OPEN) 0 V
SW-B UNIT
CHASSIS UNIT
2CH VERSION
S1
W1
W2
EMERGENCY VERSION
S1
CP8
HV
TP76N00N-15F-10KA-2251
R1
F1
CP3
CP4
CP5
CP6
CP9
CP1
CP2
6
5
4 3
2
1
Q1 XP4216
CBI0
VOLOUT
VOLIN
VCC
RLED
TLED
GND
R3 560
R2 330
DS1
LNJ107W5PRW
G
R
RX (SQL OPEN) 4.1 V
RX (SQL OPEN) 0 V
RX (SQL OPEN) 2.1 V
RX (SQL OPEN) 4.8 V
TX 4.8 V
RX (SQL OPEN) 2.1 V
TX 0 V
TX 0 V
TX 0 V
TX 4.1 V
RX (SQL OPEN) 0 V
TX 0 V