Ac/Dc Power Supply (Nbd-865) - JRC JHS-770S Instruction Manual

Options operation
10.2

AC/DC Power supply (NBD-865)

Before replacing fuses of this unit, always turn off this AC/DC power switch and power
source output to this unit.
Always use the specified fuse when replacing a fuse. Using a different fuse may result
in fire or malfunction.
In addition to the AC fuse on the panel, there are also DC fuses contained in the inside of
unit. Opening and working with the inside of the unit may result in fire or electrocution,
so with the exception of qualified service personnel, do NOT attempt to replace the DC
fuses.
To replace the DC fuses, contact JRC or our agent.
1
■ ■
Procedure
1 1 . .
1 .
Turn on both of the AC and DC switches.
If there is no AC power connected, only turn on the DC power switch.
2 2 . .
2 .
Confirm that the DC OUTPUT lamp is lit.
If this lamp is lit, 24VDC power is being output properly.
Note
If the switch is turned on but the DC OUTPUT lamp does not light, except for the dimmer control
-
position, there may be a malfunction with the AC/DC input power voltage, or a fuse may have
been blown.
-
If only DC power is used, the DC OPERATION lamp will light. Be careful not to over discharge
the battery.
10-2
WARNING
2 3 6
4 5
1.
2.
3.
4.
5.
6.
7.
7
AC Switch
DC Switch
AC Fuse (u)
DC OUTPUT Lamp
DC OPERATION Lamp
AC Fuse (v)
Dimmer control