UPS 300 (260-0251) Troubleshooting Faxback Doc. # 5746 The UPS 300 is designed for completely automatic operation. Therefore, troubleshooting consists of only a few simple checks. If problems occur, check the following: 1. Determine if the power cord is securely plugged into a live wall outlet. 2. Check the fuse on the rear panel. Unscrew the black cap and remove it. Check the fuse for continuity. Replace the fuse, if necessary. 3. If problems persist, contact your local Radio Shack store. (smc-12/22/93)