Maintenance Method for the HAKKO 498 |
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POINT 1. Reason why the unit is not judged as GOOD |
First, check whether the HAKKO 498 operates normally by the POINT 2 (Simple daily check).
The reasons why it may be judged as HIGH even though the HAKKO 498 is operating normally are as follows:
•The wrist strap is loose.
•The grounding wire for the wrist strap is broken. (For the check method, click here.)
•Measurement is performed with a dry hand.
The reasons why it may be judged as LOW even though the HAKKO 498 is operating normally are as follows:
•The resistor in the wrist strap is short-circuited. (*1).
•Measurement is performed with a wet hand.
*1 The HAKKO grounding wire for wrist strap is equipped with a 1MΩ resistor.
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