Toshiba Satellite A660-BT3G25X Maintenance Manual - Page 89

2Troubleshooting Procedures To determine if the computer's HDMI port is functioning properly, perform the following procedures. Figure 2-18 outlines the process. Start with Procedure 1 and continue as instructed. Procedure 1: HDMI connection check Procedure 2: HDMI set check Procedure 1 HDMI CEC connection check The HDMI cable may be damaged or the connections may be loose. Use windows application to check device can work fine or not. Perform Check 1: Check 1 Make sure HDMI cable is firmly plugged into both the HDMI set and the HDMI 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 HDMI 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. SatelliteA660/ProA660 Series Maintenance Manual 55