6.1 Troubleshooting
164
Cleaning
To clean the instrument, wipe it gently with a soft cloth moistened with water or mild detergent.
Disposing of the instrument
Handle and dispose of the instrument in accordance with local regulations.
Before having the instrument repaired
IMPORTANT
Never use solvents such as benzene, alcohol, acetone, ether, ketones, thinners or gasoline, as they can
deform and discolor the case.
6.1 Troubleshooting
Symptom Check Item, or Cause Remedy and Reference
The display does not ap-
pear when you turn the
power on.
Has the power cord been disconnected from the instru-
ment? Is it connected properly?
Verify that the power cord is
connected properly.
See: 2.3 Connecting the
Power Cord (p.33)
Keys do not work.
Has the key lock been activated?
Cancel the key lock state.
See: 3.9.3 Disabling Control
Keys (Key Lock) (p.109)
Is the REMOTE lamp lit up?
The instrument is being con-
trolled by the controller. End
control and cancel the remote
state.
See: 4.3 Canceling the
Remote State (Activating
the Local State) (p.133)
Display values differ from
those obtained from other
instruments.
The instrument’s apparent power (S), reactive power
(Q), power factor (), and phase angle () are calculated
based on the measured voltage (U), current (I), and ac-
tive power (P). Values displayed by the instrument may
differ from values displayed by measuring instruments
that use different operating principles or equations.
See: 5.5 Calculation Formulas
Specifications (p.159)
The display value is zero.
Voltage values that are less than ±0.5%
of the measure-
ment range and current values that are less than ±0.5%
of the measurement range or less than
±9 A will be
forcibly displayed as zero. (this is known as zero-sup-
pression).
Lower the range. If the display
value remains zero after lower-
ing the range, the value may
have exceeded the instru-
ment’s effective measurement
range.
Is the rectifier suitable for the measurement target? (If
the DC rectifier is used with an AC signal, the display val-
ue will be zero.)
Set the rectifier properly.
See: "Selecting the rectifier"
(p.42)
I am unable to change the
range.
Is range select off?
See: 3.2.3 Selecting the Volt-
age and Current Ranges
(p.43)
Has the key lock been activated?
See: 3.9.3 Disabling Control
Keys (Key Lock) (p.109)
Is the REMOTE lamp lit up?
See: 4.3 Canceling the
Remote State (Activating
the Local State) (p.133)
Is the RUN lamp lit up? See: 3.3 Integration (p.61)
Is the HOLD lamp lit up?
See: 3.9.1 Fixing Display Val-
ues (Display Hold)
(p.106)
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