146 INF-TN1FSC-E
12. ERROR AND REMEDY
If an error occurs, refer to Table below.
12.1 Error in LCD Display
Status
Cause Remedy
No display appears.
• Power supply is not turned on.
• Voltage is low.
• Fuse has blown.
• LCD is abnormal.
• Connection of DC power supply
is reverse in polarity.
Irrational display
Display is not clear.
Entire display is blackish.
• Hardware error
•
•
Ambient temperature is high
(50°C or higher)
LCD has reached the end of its
service life.
Lower the temperature.
Replace the LCD.
• Ambient temperature is high
(50°C or higher)
Lower the temperature.
See section 11 (4) “Replacement of LCD”
See section 11 (4) “Replacement of LCD”
• Line voltage is low.
• LCD is abnormal.
12.2 Error of key
No response is made to key
input.
• Hardware error
Any particular key does not
function or functions in a
wrong way.
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