Kikusui PLZ-30F, Operation Manuals

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PLZ-U Maintenance 7-5
7.4 Malfunctions and Causes
This section describes check items and remedies for malfunctions encountered dur-
ing the use of the PLZ-U. Representative symptoms are listed. Look for the item
that corresponds to your case.
In some cases, the problem can be solved quite easily. If you
fi nd an item that corre-
sponds 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.
The PLZ-U does not power up.
Keys do not work correctly.
Symptom Check Items Remedy Reference
The PLZ-U does not
operate when the
POWER switch is
turned on.
• Is the power cord disconnected
from the power outlet?
• Is the power cord inserted cor-
rectly into the AC INPUT con-
nector on the rear panel?
Connect the power cord
correctly. Section 2.5, “Connect-
ing the Power Cord”
The display freezes
showing the model
and version.
Are the load units installed cor-
rectly?
Turn off the POWER
switch and install the load
units correctly.
Section 2.4, “Installing
Load Units”
Symptom Check Items Remedy Reference
Panel key operations
are not accepted.
Are the keys locked (KEY LOCK
LED illuminated)?
Hold down the KEY LOCK
(SHIFT + LOCAL) key
until the KEY LOCK LED
turns off.
Section 5.8, “Key Lock
Function”
Is the EXT LED of the frame illu-
minated?
Set FRAME CONT con-
nector 1 ENABLE to high
level (no input).
Section 5.10.1,
“FRAME CONT Con-
nector” and chapter 6,
“Remote Control”
Is the RMT LED of the frame illu-
minated? Press the LOCAL key to
release remote control.
Unable to turn the
load on using the
LOAD key of the
frame.
Is FRAME CONT connector 1
ENABLE set to enable (low level)?
Set FRAME CONT con-
nector 1 ENABLE to high
level (no input).
Section 5.10.1,
“FRAME CONT Con-
nector”
Is FRAME CONT connector 1
LOAD ON (pin number 10) set to
load off status (high level)? Set FRAME CONT con-
nector 1 LOAD ON to high
level (no input).
Unable to turn the
load on using the
LOAD key of the
unit.
Does the polarity of the load-on
external control in the con
fi gura-
tion settings match the polarity of
LOAD ON of the CH CONT con-
nector? Match the polarities.
Section 5.9, “Con fi gu-
ration Settings” and
section 5.10.2, “CH
CONT Connector”
Is CH CONT connector LOAD ON
set to load off status? Set CH CONT connector
LOAD ON to load on.