NorthStar 958 Operator's Manual page 188

Chapter 12 - Setting Up Your 958
GPS receiver
software version
GPS receiver
self-test
Testing the 958's
keypad
Page 180
The software version of the GPS receiver is located in the GPS
RCVR SOFTWARE VERSION field.
The GPS receiver's self-test message is displayed in the GPS
RCVR SELF TEST field. If the message FAILED is displayed, you
may have to return the 958 to the factory for service.
A built-in keypad test lets you check the integrity of the 958's
keys. This function works for all keys except PWR,
BRIGHTNESS, SAVE, and MOB key (pressing SAVE or MOB
during the keypad test saves a waypoint instead of testing the
keys).
On the OPTIONS/SERVICE INFO screen, press the MORE key to
display the MORE OPTIONS/SERVICE INFO screen. Press the
DIAGNOSTICS menu key, then the KEYPAD menu key.
Pressing each key identifies it on the screen.
When you're done, press and hold the CURSOR PAD up or
down until the 958 displays the MORE OPTIONS/SERVICE
INFO screen again.
958 Operator's Manual, Rev. A