Furuno FM-8800D Service Manual page 200

2. In the case of before 05P0774-Ver. 02
05P0774A: FM-8800S
Short/Open between J1 and J2 I the ship
parts circled in fig. 8.5.2
When using 05P0774B in FM-8800S,
jumper between J1 and J2 on the B side.
05P0774B: FM-8800D
There are no chips, JP1, 2, and 3.
J1, J2, and J3 are installed.
When using 05P0774A in FM-8800D,
remove chips JP1, 2, and 3 and install J1,
J2, and J3.
TX/RX
05P0774A, B
PA
SIMPLEX
(JUMPER)
Fig. 8.5.2 TX/RX B Board: Sample of 05P0774A-Ver.2
DUPLEXER
J1 : DUP OUT
J2 : DUP IN 1
J4 : DUP IN 2
U2 J3 : ANT
Fig. 8.5.3 TX/RX Board: Antenna Circuit
8-20
J5
J4
J2
DUP RX
(05P0777)
TX FIL
RX FIL
R/T ANT
8.5 Compatibility of Boards
JP1, 2, 3
J1
R/T ANT