Furuno FELCOM 12, Service Manual

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4-5
Bottom cover removed
TP4 TP5
(Used to measure Lissajous figure.)
CPU board
(05P0148)
U11:EE-PROM
(Forward and
return IDs
memorized)
LED:CR2/3/4/5/6
U44:DEMOD ROM
U58:DSP
U66:DDS
LED:CR7/8/9
GPS board
(Optional)
S 1
JP 1 U39:CPU 1 ROM
BT1:CR1/2 8L
(BACKUP BATT)
FAN
Figure 4-9 CPU Board
4.3 Distress Alert Unit/Received Call Unit (IC-302/303)
BUZZER board
(05P0150)
T.B.
Switch
Buzzer
Figure 4-10 IC-302/303