Voltage Block Diagram - Icom IC-2730A Service Manual

4-4 VOLTAGE BLOCK DIAGRAM

Voltage from the power supply is routed throughout the transceiver, through regulators and switches.
W300
NOISE
FILTER
Q301/Q308
PWR
PCON
CTRL
MAIN UNIT
IC320,
IC324
LOW VOLTAGE
DETECTOR
ALARM
PDV
To the optional unit
To CPU
IC7
CTRL3V 3.3V
REG
SW3C
FANHV
HV
I SENS
UTX_C
IC310
CURRENT
IDET
DETECT
VTX_C
Q306 IC313
VCC +8
REG
SW
Q302 IC325
+8
VCC
REG
SW
IC321
+8
REG
IC311/D325/D332
3.3V
REG
IC306/D333
BT3V
REG
CONTROL UNIT
8V
IC6
3.3V
REG
Q32/Q34
UT8 UT8
REG
Q27/Q28
VT8 VT8
REG
8V
VCC
VCC2
8VS
IC319
5V 5VS
REG
IC314
3.3V 3VS
REG
CPU3.3V
BT3.3V
CONT8V
1 1
2 2
3 3
4 4
5 5
8V
8V
6 6
J300
4-8