Toshiba Satellite Pro L450-W1543 Maintenance Manual - Page 76

412 Troubleshooting Procedures To determine if the computer's HDMI port is functioning properly, perform the following procedures. Figure 2-19 outlines the process. Start with Procedure 1 and continue as instructed. Procedure 1: HDMI connection check Procedure 2: HDMI set check Procedure 1 HDMI connection check The CRT cable may be damaged or the connections may be loose. Perform Check 1: Check 1 Make sure HDMI cable is firmly plugged into both the CRT set and the CRT port of the computer. If the cable is connected correctly, go to Check 2. Check 2 Make sure the HDMI port is firmly secured to the system board of the computer. If the malfunction remains, go to Check 3. Check 3 The HDMI cable may be damaged. Replace with a good cable. If the malfunction remains, go to Procedure 2. Procedure 2 HDMI set check The TV set may be faulty. Perform Check 1: Check 1 Try using the set for television reception. If it does not work, the set may be damaged. If the set does work, perform Check 2. Check 2 Try connecting a different television to the computer. If the replacement television works, the original set may be damaged. If the replacement set does not work, the system board may be damaged. Replace it with a new one following the instructions in Chapter 4. Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual 41