Toshiba R600 S4202 Maintenance Manual - Page 96

2 Troubleshooting Procedures 2.10 Modem Troubleshooting U(Not Used) U 2.10 Modem Troubleshooting (Not Used) To check if modem is malfunctioning or not, follow the troubleshooting procedures below as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute Modem test in the LAN/Modem/Bluetooth/IEEE1394 test program. Refer to Chapter 3, Tests and Diagnostics for more information on how to perform the test program. If any error is detected, perform Procedure 2. Procedure 2 Connector Check and Replacement Check MDC (Modem Daughter Card) is used as the modem for this computer. MDC is connected to the system board. If modem malfunctions, the connection of cable, board and module may be defective. Otherwise, they may be faulty. Disassemble the computer following the steps described in Chapter 4, Replacement Procedure and perform the following checks: Check 1 Make sure the following connections are firmly connected. If any connector is disconnected, connect it firmly and return to Procedure 1. If the problem still occurs, perform Check 2. 2-50 [CONFIDENTIAL] PORTEGE R600 Maintenance Manual (960-709)