Maintenance Method - Iwatsu DS-8814 Operation Manual

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a. Maintenance method
• Cleaning
Disconnect the power cord before cleaning to prevent electric shock. Wipe off the
dirt on the surface of the instrument and cover with a small volume of water or mild
detergent. Use only recommended cleaning solvents; failure to comply could result
in discoloration or damage.
• Usable solvents or detergents:
• Prohibited:
• Cleaning display
Remove dirt in the following manner:
• Wipe off ordinary dirt with a soft cloth.
• Wipe off stubborn dirt with a cloth dampened with mild detergent.
b. Self-calibration
Self-calibrates sensitivity, offset, and trigger level.
Procedure of self-calibration
1. Through [FUNCTION control], set the UTILITIES menu to Config.
2. Pressing FUNCTION knob shows the Config menu.
3. Through [FUNCTION control], set the Config menu to Self Cal.
4. Pressing FUNCTION knob twice shows "Pressing FUNCTION again starts
calibration" and pressing FUNCTION knob again in this condition starts
calibration .
While self-calibration is in progress, no panel operation is possible.
When calibration ends normally, "Calibration has ended" is displayed.
If "Failed to calibrate" is displayed, try again self-calibration several times and if the
same message still appears, contact our sales distributors.
Caution
While self-calibration is in progress, do not apply any signal to the input
connectors (CH1 to CH4).
c. Automatic calibration
Automatically calibrates offset (2 mV/div, 5 mV/div).
Procedure of automatic calibration
1. Through [FUNCTION control], set the UTILITIES menu to Config.
2. Pressing the FUNCTION knob shows the Config. menu.
3. Through [FUNCTION control], set Auto Cal of the Config. menu to On.
Water, detergent (diluted)
Alcohol, gasoline, acetone, lacquer, ether,
thinner, and cleansers containing ketones