Sony DCR-TRV50 Operating Instructions (primary manual) - Page 119

Using a "Memory Stick" - Introduction Inserting a "Memory Stick" Insert a "Memory Stick" in the "Memory Stick" slot as far as it can go with the B mark facing as illustrated. Access lamp B mark "Memory Stick" slot Ejecting a "Memory Stick" Press the "Memory Stick" once lightly. While the access lamp is lit or flashing Do not shake or knock your camcorder because your camcorder is reading the data from the "Memory Stick" or recording the data on the "Memory Stick." Do not turn the power off, eject a "Memory Stick." Otherwise, image data may become damaged. If " MEMORY STICK ERROR" is displayed Reinsert "Memory Stick" a few times. The "Memory Stick" may be damaged if the indicator is still displayed. If this occurs, use another "Memory Stick." "Memory Stick" Operations 119