System for remote diagnosis of device troubles

A method for carrying out a remote diagnosis of a user's device, said method comprising the steps of:

• a control computer associated with said user's device, said control computer including a diagnostic data memory and mail-setting means for setting data in a form of electronic mail;
• providing a trouble-diagnosing computer capable of diagnosing troubles which occur in said user's device;
• providing relay stations each capable of receiving and storing messages in said form of electronic mail set by said mail-setting means, said relay stations being connected together with said control computer and said trouble-diagnosing computer through public telecommunication lines;
• preliminarily storing in said diagnostic data memory diagnostic data which are expected to be used for diagnosing troubles which are anticipated to occur in said user's device;
• causing said mail-setting means, when a trouble occurs in said user's device, to set an e-mail message regarding said trouble and transmitting said e-mail message to one of said relay stations associated with said user's device through public telecommunication lines;
• and
• causing said e-mail message to be transmitted to said trouble-diagnosing computer, said trouble-diagnosing computer including readout means for reading out and saving therein electronic mail messages from said control computer stored at an associated one of said relay stations.