Casio PV-S250 Informações Técnicas descarregar pdf (Página 18)

189

Chapter 16 Technical Reference

Display Contrast

Key Tone

Possible Cause

Display contrast is too dark.

Recommended Action

Adjust display contrast (page 169).

Problem: Display is totally black.

Recommended Actions

1. Slide the battery switch to NORMAL

OPERATION.

2. Replace batteries (page 19).

3. Adjust display contrast (page 169).

4. Press Action control to turn on power

or turn on the screen tap power on

feature.

Problem: Nothing appears on the display when power is turned on.

Possible Causes

1. The battery switch on the back of the

unit is set to REPLACE BATTERIES.

2. Battery power is low.

3. Display contrast is too light.

4. Screen tap power on feature is turned

off.

Problem: The PV unit does not beep when you perform an operation.

Possible Cause

The key tone is turned off.

Recommended Action

Turn on the key tone (page 167).

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