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Traduciendo paso 1

Paso 1
Before removing the backup battery make sure your AA batteries are installed so that there is no loss of information.
  • Before removing the backup battery make sure your AA batteries are installed so that there is no loss of information.

  • Using a #00 Philip Screwdriver remove the 19mm screw located near the center of the back of the calculator on the panel with words "Test Access"

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