AT-7 User Guide
5
Safety Instructions
Maintenance
Service
Do not use any type of abrasive pad, scouring powder or solvent such as alcohol or benzene.
1. Damage Requiring Service – The unit should be serviced by a qualified service person when:
a. The Power supply cord(USB Cable) has been damaged; or
b. Objects have fallen or liquid has been spilled into the unit; or
c. The unit has been exposed to rain; or
d. The unit does not appear to operate normally or exhibits a marked change in performance; or
e. The unit has been dropped, or the enclosure is damaged.
2. Servicing – The user should not attempt to service the unit beyond described in the
operating instructions.
All other servicing should be referred to a qualified service personnel.
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