| |
|
+ |
'''Nothing is displayed on the screen, although the backlight seems to be working. What can I do?'''
|
| |
|
+ |
It's possible that the contrast has been set too low, either by a factory reset or because the batteries are running low. To adjust the contrast without using a menu, first make sure the device is completely powered off by pressing the power key.
|
| |
|
+ |
Next, hold the 0 and 7 keys, then press power. After this press 7. You should hear a tone from that keypress. Start pressing F7 until you can see the text on the screen again. If this is working, you should hear a tone each time you press down.
|
