Location of Fuses
&
There are LETHAL VOLTAGES present on the Power supply assembly. Therefore it is important when working on the MCB or PSU board to completely power
down the panel. The mains supply must be switched off and the battery supply disconnected.
4188-949 issue 3_05/10_Nano Comms inst.
17
Nano panel based system
Location
o
f
Fuses
IC10
P2
Main Control Board
+VE
0V
DRN
PP10
RX TX
0VISO
DRN
ISOLATED RS232
NC
C
NO
DRN
COMMON FAULT
PP4
DRN
FIRE OUTPUT
PP5
EXT.EVAC.
PP8
+VE
0V
DRN
CLASS
CHANGE
PB9
L1 0V
DRN
LOOP END 1
PB1
L2 0V
DRN
LOOP END 2
PB2
MA2+
RS485
PB3
DRN
B
A
24V 0V
MA2-
DRN
MASTER
ALARM 1
PP6
MASTER
ALARM 2
PP7
MA1+ MA1-
DRN
CR2032
24V DC
MA1
MA2
FS3
0A25 AS
CERAMIC
FS2
0A25 AS
CERAMIC
FS1
0A25 AS
CERAMIC
SW1
RESET
P9
ENABLE
PROTECT
DISABLE
P1
P5
ENABLE
BUZZER
DISABLE
COMM TOOL
P11
RL1
RL2
RED
RED
RL3
RL4
NC
C
NO
P2
P1
N
E
L
FS3 3.15A(T)
Mains fuse
P3
43V
FS6
1A
2
4
V-F
S
4
-1
A
P7
BAT1
Bat
1
FS1
-
3.15A
P5
L
N
Power Supply
Assembly
Display Assembly
Master Alarms 2 fuse
FS3
CERAMIC
T250mAH250V
Master Alarms 1 fuse
FS2 0
CERAMIC
T250mAH250V
24V DC fuse
FS1 0
T250mAH250V
CERAMIC
43V fuse
FS6
T1A
24V fuse
FS4
T1A
Battery fuse
FS1
T3.15A
Mains fuse
FS3
T3.15AH250V