Toshiba Tecra A3-S711, Руководство по обслуживанию

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2 Troubleshooting Procedures 2.9 TouchPad Troubleshooting
2-28 Tecra A3/S2 Series Maintenance Manual
This section describes how to determine if the computer's modem is functioning properly. Figure
2-12 outlines the process. Perform the steps below starting with Procedure 1 and continuing with
the other procedures as required.
Procedure 1: Telephone line connection check
Procedure 2: Modem card connection check
Procedure 3: Modem card replacement check
Procedure 1 Telephone line connection check
The telephone cable may be damaged or the connections may be loose. Attempt to connect the
computer to a network through using the modem. If the modem does not function at all, go to
Procedure 3. If the attempt fails because the computer detects no telephone signal, the fault may
be in the telephone cable, the wall socket or the modem port. Perform Check 1:
Check 1 Make sure telephone cable is firmly plugged into both the telephone wall socket and
the modem port of the computer. If the cable is connected correctly, go to Check 2.
Check 2 Make sure the modem port is firmly secured to the system board of the computer. If
the malfunction remains, go to Check 3.
Check 3 The telephone cable may be damaged. Replace with a good cable. If the malfunction
remains, go to Procedure 2.
Procedure 2 Modem card connection check
Disassemble the computer following the steps described in Chapter 4, Replacement Procedures
and ensure that the modem card is well connected to the system board. If the problem persists,
perform Procedure 3.
Procedure 3 Modem replacement check
The modem card or RJ-11 jack may be faulty. Try replacing them. If the problem persists, the
system board may be defective or damaged. Replace the System Board with a new one
following the steps in Chapter 4,
Replacement Procedures .