Notice of Repair for Sound Level Meters LA-7200/LA-7500/LA-7700

Thank you for your continued patronage of Ono Sokki products.

We sincerely apologize for the inconvenience caused to our customers regarding the malfunction of the LA-7200/LA-7500/LA-7700 sound level meters when using batteries, which we announced on April 8, 2021. We are pleased to inform you that preparations for the repair are now complete.

Target Products

Details of the problem

When using the LA-7000 series sound level meter with batteries, the displayed sound pressure level may be higher than the actual level when the voltage falls within a certain range (4.93 to 4.98 V).
When using new LR6 alkaline batteries, a malfunction will occur approximately 5 hours after starting operation.
For about an hour after the event occurs, the measured value may be output as higher than the normal value, and then it will return to the normal value.
In the case of USB power supply, malfunctions may occur due to voltage variations.
No problems will occur when using the included AC adapter.

cause

The problem lies with the power supply circuit components that generate power for the analog circuit from the battery voltage.

correspondence

We are now accepting returns of the affected products. A representative from our customer service department will contact you.
After the repair, we will perform an inspection and then return the item to you.

Please contact your assigned Ono Sokki sales representative for information regarding the pickup period.

*Please note that due to the impact of COVID-19 and other factors, processing times may be longer than expected.
We sincerely apologize for the inconvenience and appreciate your understanding.

We offer free re-certification for certified products.
Furthermore, for eligible products for which certificates have been issued in the past, we will reissue the certificates free of charge. If you require them, please contact your sales representative.

Please be aware of the following three points before proceeding with the repairs.

• Due to repairs, the model approval number will be changed. (Handling will remain the same as before the number change.)
• We will update to the latest firmware. (No functionality will be limited.)
• During the inspection, we will return the sensitivity adjustment volume to its factory default position.

If you have any requests regarding loaner equipment or any other questions, please contact our sales representative.

Regarding inquiries

For inquiries regarding the effects of the measurements, please contact us via the inquiry form or our customer support department.

If you have any questions, please contact our customer service department or your nearest sales office.

We will continue to strive to prevent recurrence and improve product quality, and we ask for your continued patronage.