The maintenance methods of telephone faults are as follows: the common faults of telephone are unable to dial, receive signals and ring. Next, Bian Xiao will introduce the solutions to these problems in detail.
1, check the appearance: that is, check whether every external part, external cord and plug-in of the phone are plugged in properly. After checking whether the ringtone volume is muted, turn it up and test it. Then it depends on whether there is something wrong with the dial key.
2. Detecting the telephone current: Detecting the telephone current is an important method when we repair the telephone. We use a multimeter to connect the telephone line in series to measure whether the working current of the telephone is normal when hanging up and picking up the phone.
Downtime refers to the suspension of communication services, and users can't use all services such as telephone calls and network erasure. There are generally two kinds of downtime. One is that the user actively applies to the operator to suspend the mobile phone service by reporting the loss or stopping the phone number. The other is that the communication operator suspends the user service when the balance of the user account is zero or a given credit line has been consumed.