SINGCALL APE6600 Bedienungsanleitung Seite 4

2. Press the key ENT repeatedly till F9 appears.
3. Then press the key FUN for 2 seconds till a three-digit XXX appears on the LED screen
4. Press the key ENT to change the number. When the XXX is 181, it's unlocked.
Notice: Function F2,F3,F6,F8,F9 can still be used after being locked, but F1,F4,F5,F7 can't .All
functions can be used after unlocking it.
Instructions for Replacing Battery (Pager APE560)
Schematic diagram：
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