Distress Alert Unit/Received Call Unit (Ic-302/303) - Furuno FELCOM 12 Service Manual

Bottom cover removed
FAN
U11:EE-PROM
(Forward and
return IDs
memorized)
CPU board
(05P0148)
BT1:CR1/2 8L
(BACKUP BATT)

4.3 Distress Alert Unit/Received Call Unit (IC-302/303)

BUZZER board
(05P0150)
GPS board
LED:CR2/3/4/5/6
(Optional)
JP 1 U39:CPU 1 ROM
S 1
(Used to measure Lissajous figure.)
Figure 4-9 CPU Board
Figure 4-10 IC-302/303
4-5
U44:DEMOD ROM
U58:DSP
U66:DDS
LED:CR7/8/9
TP4 TP5
Buzzer
Switch
T.B.