##230
[ TX/RX ] The unit used to control the display
Cause
• The operation of the IC used to control the
display did not end normally.
##231
[ TX/RX ] The unit used to control the buttons
Cause
• The operation of the IC used to control the
buttons did not end normally.
malfunctioned
Remedy
• Replace the unit used to control the dis-
play (e.g., display unit).
malfunctioned
Remedy
• Replace the unit used to control the but-
tons (e.g. control panel unit).
2-33
Chapter 2: Service Error Codes