8-14 Maintenance and Calibration PLZ-4W
8.4 Malfunctions and Causes
This section describes remedies for malfunctions encountered during the use of the
PLZ-4W. Representative symptoms and their possible check items are indicated.
Look for the item that corresponds to your case. In some cases, the problem can be
solved quite easily.
If you find an item that corresponds to your case, follow the remedy for the item. If
the remedy does not solve the problem or if your case does not match any of the
items, contact your Kikusui agent.
Symptom 1: Nothing appears on the display when the POWER
switch is turned on.
Symptom 2: The display is dark.
Symptom 3:Keys do not work.
Check Item
Possible Cause Remedy
Location and Status of the Object Check Result
Is rated voltage applied for the
input power supply (AC)?
No
Broken power cord
Bad connection at the
AC INPUT connector on
the rear panel
Check that the power cord is not
broken and that the connection at
the AC INPUT connector is
secure.
Ye s Malfunction
Remove the power cord plug
from the outlet.
Immediately stop the use of the
instrument and request repairs.
Check Item
Possible Cause Remedy
Location and Status of the Object Check Result
Is rated voltage applied for the
input power supply (AC)?
No
Low supply voltage
Use the PLZ-4W in the input
supply voltage range.
Ye s Bad contrast adjustment
Adjust the contrast.
See section 2.6, “Turning on The
Power.”
Check Item
Possible Cause Remedy
Location and Status of the Object Check Result
Is key lock mode enabled?
Ye s Key lock is enabled.
Release the key lock.
See section 5.11, “Lock Function.”
No Malfunction
Immediately stop the use of the
instrument and request repairs.
Set to slave. Ye s
Set to master using menu setup.
See section 5.13, “Menu Setup.”
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