This video will introduce possible errors and the corresponding troubleshooting steps, which include: 
1. Checking the video input and output
2. Verifying control of the PTC-285
3. Ensuring Normal Functionality of Audio Input and Output

0:00 Opening
0:09 Introduction
0:27 Checking and Troubleshooting for Video
1:09 Checking and Troubleshooting for PTC-285 Control
1:50 Checking and Troubleshooting for Audio