ISSUE

  • Keypad is invisible in a dark room



APPLIES TO

Devices with keypad

  • PM66, PM67
  • PM550, PM560
  • PM451, PM351




Troubleshooting Steps


CauseSolution
1Disabled Keyboard backlight

Turn on Keyboard Backlight

You can use the keyboard backlight feature for use in a dark place.

Go to Settings Display, and turn the Keyboard Backlight switch on.

2Repair or analysis required

Contact local reseller

If you cannot solve the problem with above steps, contact your local reseller to proceed repair or analyze the issue.