9.1 Troubleshooting
164
If abnormal operation occurs, check the following items.
If the cause is unknown
Try performing a system reset. All settings are returned to their factory
defaults.
See: "4.6 Initializing the Instrument (System Reset)" (p. 77)
Before returning for repair
Symptom Check Items
The POWER LED
flashes, but nothing
appears on the
screen.
• Is the power switch turned on?
• Are the AC adapter and power cable securely connected?
• Is the battery pack installed correctly?
• Is the LCD backlight auto-off function enabled (ON)?
The keys do not
oper
ate.
• Are any of the keys stuck down?
• Is the KEY LOCK function enabled (ON)?
Measurement values
ar
e unstable.
• Is the frequency of the lines to be measured 50/60 Hz?
This instrument does not support 400-Hz lines.
The expected
m
easurement data
cannot be obtained.
• Are the voltage measurement and clamp sensor leads properly
connect
ed for the system wiring configuration?
• Does the wiring configuration setting match the actual system
wiring configuration?
Operation is
abnor
mal when
connected to a
computer.
• Is the instrument power turned on?
• Is the interface cable securely connected?
• Is the PC application software installed?
Power does not turn
on.
• A power protection component may be damaged. As these are
not
intended to be replaced or repaired by customers, please
contact your supplier or nearest Hioki representative.
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