Canon TX-F Spécifications télécharger pdf (Page 55)

8.2 Before Calling a Service Person

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8.2 Before Calling a Service Person

Whenever a problem occurs or message appears on the monitor, take the countermeasures

indicated below according to the cause.

If function is still not restored, contact Canon representative or distributor.

8.2.1 If Problems Such as Following Occur

Problem Cause Remedy

Measurements vary widely.

Eyelid or eyelashes are covering the

pupil.

Instruct the examinee to open the

eye wider, or lift up the eyelid lightly

with your fingers and measure

again.

Examinee’s eye is not fixed. (Eye is

moving restlessly.)

Relax the examinee and have him/

her look at the eye fixation lamp.

Examinee’s eye is exposed to exter-

nal light.

Do not expose the examinee’s eye

directly to bright artificial light or

sunlight.

Level meter is low.

Eyelid or eyelashes are covering the

pupil.

Instruct the examinee to open the

eye wider, or lift up the eyelid lightly

with your fingers and measure

again.

Frequent blinking.

Tell the examinee to try not to blink,

or lift up the eyelid lightly with your

fingers and measure again.

The reflection rate of the cornea is

low.

Level meter will not be high in this

case. Continue the measurement.

Settings in the SET mode have

changed for no apparent reason.

When power is turned OFF and

then ON again, message “LOW

BATTERY” appears on the mon-

itor.

Voltage of battery for data backup is

low.

Contact Canon or distributor for

replacement of battery.

READY lamp blinks and nothing

is displayed on the monitor.

Power-saving system is functioning

because no operation has been per-

formed for over 3 minutes.

Press any switch.

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Canon TX-F Spécifications Page 55

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