5.5 If This Happens
HA-8190V 5-25
5.5 If This Happens
5.5.1 If the Instrument Does Not Start Up (Replacing Fuses)
If the instrument does not start up after turning on both the main power switch and standby switch, there is a possibility
that a fuse has blown. The instrument has a pair of fuses and they can be replaced from the rear panel. Replace
whichever is blown.
Prepare: Fuse T4AE250V~ and flat-head screwdriver
1 Turn off the main power.
a Press the standby switch to turn off the power.
• Press the standby switch two or three times. The power is ON
when the switch remains slightly depressed. Then, press the
switch one more time to turn off the power.
b Press the main power switch on the rear panel to turn off the main
power.
• Press the “ ” side of the main power switch.
c Unplug the power cord from the outlet.
d Unplug the power cord from the power input terminal on the rear panel.
2 Remove the fuse holder.
a Pop open the fuse holder cover by working a flat-head
screwdriver under the tab (dotted area in the figure).
Use only fuses of the specified capacity. Over-rated fuses may result in fire or damage to the
instrument.
NOTE:
If the fuses blow soon after the replacement, there is a problem with the instrument. Contact your distributor.
Standby switch
Main power switch
Keep the power cord unplugged unless otherwise instructed in the following steps.
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