42
Rev G
S6−
−−
−TR400 Diagnostics
Keypad and display test
Overview
The keypad diagnostic tests the functionality of each key and bit position on the
display.
Keypad and
display test
To perform the keypad test, do the following:
Step Action
1.
Press the DIAG key.
2.
Press the VAR key; the display will show 8888, the keypad diagnostic.
3.
Press each key from left to right and the display will appear as shown in
Figure 15. Note the position of the decimal point after each key press.
4.
Press the DIAG key to exit the keypad diagnostic.
REV
ENTER
VAR
8 8. 8 87 7 7. 7
5 5 5 5.4. 4 4 4 6 6 6 6.
2 2 2. 21 1 1 1. 3 3. 3 3
Display
Figure 15: Keypad Test Showing the Display After Each Key Press
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