Omron NT31 User Manual

623
Troubleshooting
Section 11-1
NT31/NT31C Symptoms Cause Remedy
The System Menu cannot
be called up.
“Display System Menu” under
“Change System Settings” in the
System Installer mode is set to
“Disabled”.
In the System Installer mode, set “Display System
Menu” to “Enabled” (page 169).
The following System
Menu operations are not
possible.
- Establishing the
Transmit mode
- Displaying the memory
“Screen Memory Protect” under
“Change System Setting” in the
System Installer mode is set to
“Disabled”.
In the System Installer mode, set “Screen Memory
Protect” to “Enabled” (page 169).
- Displaying the memory
switch setting screens
- Screen data memory
check
- Displaying the
initialization menu
- Displaying the
calendar/time setting
screen
“Screen Memory Protect” has been
set to “Disabled” because the PT
power supply was turned OFF during
deletion of screen data.
Do not turn the PT power OFF during deletion of
screen data.
In the System Installer mode, first change the setting
for “Screen Memory Protect” to “Enabled”, then
repeat the screen data delete operation (pages 169
and 170)
Cannot input numeric
values
The upper/lower (max./min.) limit
check for numeric value input is in
effect.
Check the screen data’s upper/lower (max./min.) limit
check setting for numeric value input, and correct it if
necessary (for numeric key type, refer to page 424; for
thumbwheel type, refer to page 431).
Cannot input numeric
values/character strings.
Bit 5 of the PT status control area
(numeral/character string input) is set
to “1” (ON).
Set bit 5 to “0” (OFF) (page 274).
Window screen does not
open
Bit 6 of the PT status control area
(PT window opening) is set to “1”
(ON).
Set bit 6 to “0” (OFF) (page 274).
Cannot switch screens
with touch switches
Bit 4 of the PT status control area
(PT screen switching) is set to “1”
(ON).
Set bit 4 to “0” (OFF) (page 274).
The display is dim. Insufficient contrast or brightness Increase the contrast/brightness (pages 212 and 213).
Backlight defective, or its life has
expired
Replace the backlight (page 632).
The display is too faint. The contrast is too high. Reduce the contrast (page 212).

Omron NT31 Specifications

General

Brand	Omron
Model	NT31
Category	Touch terminals
Language	English