Lcd/Keyboard Check; Antenna Coupler Check - Furuno FS-1503 Service Manual

LCD/Keyboard Check

1. While pressing and holding down [ENT] key, turn on the power.
2. Release the hand from [ENT] when all indications appear on the screen.
3. Press each key so that the corresponding number appears on the screen. See table
below. The program number plus its revision level appears on the bottom of the
screen: 055019110X.
Indication
Indication
Indication
Indication
4. Turn off the power after the test.

Antenna Coupler Check

1. Remove the antenna coupler cover and shield cover inside.
2. Change the jumper J1 to "SELF TEST."
3. Press the TUNE switch in the antenna coupler.
4. All relays are turned on and off one by one as described in the figure below. At the
last step, all relays are turned on and off at a time.
5. Change the jumper J1 to "TUNE."
6. Put the covers back.
J1 (TUNE/SELF TEST)
S1 (TUNE)
Key MODE / 1
0
Key
/ 4
4
Key
TUNE / 7
8
Key
2182
C
AT-1503
(05O0669)
2 5
K18
K17
K16
K15
K14
4
K13
3
Shield cover
CURS / 2 CLARI / 3
1 2
SQL / 5 SCAN / 6
5 6
H/L / 8 / 9
9 A
INT / 0 ALM
d E
K9
K8
Relays are turned on and off one by
K7
one in order of number in the figure.
K6
K5
K4
K3
1
5-5
TX
3
RX
7
CH
b
ENT
F