Victor GR-DV3000

This is a Victor GR-DV3000.
It has been stored for a long time as I have been using SONY products. The battery can be charged to 100%, but the charger is not included.
I only noticed one thing when I used it again after a long time. When I inserted a tape and played it after cleaning the heads, an E03 error occasionally appears when playing old tapes. The E03 error is a sign to protect the tape, asking you to remove and reinsert the tape. It happens occasionally, not every time. I repeatedly recorded, played, fast-forwarded, and rewound new tapes for several hours, but no error occurred. Therefore, I believe it is an error caused by the resistance of playback with old tapes. Considering this, I repeatedly tested playback, rewinding, and fast-forwarding several recorded 120-minute tapes. Even if an E03 error occurred, the tapes were not damaged and could always be ejected after being stored. I want to inform you of this. Due to this condition, we cannot accept complaints or returns, so we ask for your understanding.
Included are the main unit, an SD card, and a battery.