Furuno FAR-2107 Series Service Manual page 263

RPU-013
U21
MAIN CPU
EXT ALARM ACK N
- ALARM 1
- ALARM 2
- ALARM 3
- ALARM 4
1 to 8
J612
EXT
EXT ALARM ALARM ACK
ALARM SYSTEM
Fig 4.11.3 Diagram of System Fail Alarm Signal Output
Set as "Normally close"
SYSTEM FAIL ALARM --> NORMAL
Power ON
Closs
Power OFF
Open
Set as "Normally open"
SYSTEM FAIL ALARM --> INVERT
Power ON
Closs
Power OFF
Open
KEY
J602
SYS FAIL H
9
SYS FAIL C
10
J622
1
GND
2
KEY
9 12 11
SYS FAIL
SYSTEM FAIL ALARM
Occur
Initializing
30sec
Fig. 4.11.4 SYSTEM FAIL ALARM Sequence-1
SYS FAIL ALARM
Occur
30sec
Initializing
Fig. 4.11.5 SYSTEM FAIL ALARM Sequence-2
RCU-014
J501
TX/RX 0
SYS FAIL H
9
4
SYS FAIL C
10
3
U12
J507
(PS7241 1B)
SYS FAIL H
1
SYS FAIL C
2
U14
SYS ACK H
3
GND
4
SYSTEM FAIL ALARM
resolved
10sec
BZ ON BZ OFF
[ALARM ACK] ON
BZ ON BZ OFF
SYS FAIL ALARM
resolved
10sec
BZ ON BZ OFF
[ALARM ACK] ON
BZ OFF
BZ ON
4-60
4.11 Alarm Output Setting
TX/RX 1
1
SYS FAIL N
2
U9
BZ
U8
CPU
SOUND
S36
(DIP SW)
SYS ACK N
RADAR OK
GND
Power OFF
Power OFF
REMOTE
J502
EMRI
J506
1
2