Unitech PT-500 - Manual (Page 25)

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Press [EXIT] to exit to the previous menu.
5. DIAG MENU
Select [5-DIAG] to diagnose the PT-500 to determine if there
are any hardware problems.
Select [1] to diagnose LCD
Select [2] to diagnose Keypad
Select [3] to diagnose RS232 port
Select [4] to diagnose Memory
Select [Exit] to return to the previous menu
Note: Multi-Point Protocol will be disabled temporally
while the system is diagnosing itself.
1. DIAG LCD
The LCD will become clear, then black, and then will
return to the Diag Menu display.
2. DIAG KBD
Keypad input will be displayed on the bottom left
corner. Press [Exit] key to return to the previous
menu.
< DIAG MENU >
1-LCD 2-KBD
3-COM 4-MEM
< DIAG MENU >
Key Pressed:
_