User's Manual

64
Troubleshooting
The keyboard input seems not working properly…
Test keyboard.
>> Also see Section 4.3.3 Tests
: Keyboard
If the problem persists, re-connect the power and perform test.
The external devices controlled by DI/DO signals are not working properly…
Check if the device is properly wired to the terminal blocks.
If the problem persists, re-connect the power and perform test.
About abnormal response…
The LEDs or LCD seem not working properly –
Test components.
>> Also see Section 4.3.3 Tests
: LCD & LED
If the problem persists, re-connect the power and perform test.
The buzzer seems not working properly –
Test audible indicators.
>> Also see Section 4.3.3 Tests
: Buzzer
If the problem persists, re-connect the power and perform test.
The terminal seems not working properly –
First upload all data to a computer, and then test memory.
>> Also see Section 4.3.3 Tests
: Memory
If the problem persists, re-connect the power and perform test.