If the Calibration Lamp Blinks

If the calibration lamp blinks for about ten seconds after a battery is inserted, the battery needs to be calibrated to ensure that its charge state can be ac- curately measured. The time needed to calibrate the battery is shown by the charge lamps:

Approximate time

Calibration

 

Charge lamps (green)

 

needed to recalibrate

lamp (yellow)

 

 

 

 

 

battery

CAL ON

2 h

4 h

6 h

Over 6 hours

Glows

Glows

Glows

Glows

 

4 – 6 hours

Glows

Glows

Glows

Off

 

2 – 4 hours

Glows

Glows

Off

Off

 

Under 2 hours

Glows

Off

Off

Off

 

To start calibration, press the CAL button next to the calibration lamp for about a second while the lamp is blinking. When calibration is complete, the calibration and charge lamps will turn off and charging will begin.

Although calibration is recommended for accurate measurement of battery charge state, calibration need not be performed when the calibration lamp blinks. Once begun, calibration can be interrupted as desired.

If the CAL button is not pressed while the calibration lamp is blinking, nor- mal charging will begin after about ten seconds.

To interrupt calibration, press the calibration button again. Calibration will end and charging will begin.

Troubleshooting

If the lamps blink when no battery is inserted: the MH-21 has malfunctioned. Unplug the charger immediately and contact a Nikon service representative.

If the calibration and charge lamps all flash at once when a battery is inserted: a problem occurred during charging. Remove the battery and unplug the charger im- mediately, then contact a Nikon service representative.

Technical Notes—Specifications

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Nikon D2Xs manual 267, If the Calibration Lamp Blinks, Troubleshooting