Furuno FS-1503, Service Manual

Page: 74 / 136

5-5
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.
Key
Indication
Key
Indication
Key
Indication
Key
Indication
MODE / 1
0
4
TUNE / 7
8
2182
C
CURS / 2
1
SQL / 5
5
H/L / 8
9
INT / 0
d
CLARI / 3
2
SCAN / 6
6
A
ALM
E
TX
3
RX
7
CH
b
ENT
F
/ 4
/ 9
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)
AT-1503
(05O0669)
Shield cover
K1 K2
K3
K4
K5
K6
K13
K7
K8
K9
K14
K15
K16
K17
K18
K1
2
K2
2
K2
1
K2
0
K1
9
K1
0
K1
1
2 5
4
3
1
Relays are turned on and off one by
one in order of number in the figure.