The front panel has two bi-color lights (LEDs). Green is used to indicate normal operation and Amber is used to imply warning conditions. Pulsing usually shows activity between the drive and the SCSI bus. If the cassette
Light (Left) shows steady Amber, this indicates that the cassette is write protected. If the Drive Light (Right) shows steady Amber, this indicates a fault condition.
The following table lists the possibilities:
| State | Cassette Light | Drive Light | Meaning |
| Read/Write States | Pulse Green | Pulse Green | Cassette (Unloading) |
| Green | Green | Cassette Loaded/Online |
| Green | Pulse Green | Cassette Loaded/Activity |
| Green | Off (No Light) | Cassette Loaded/Offline |
| Write-Protect Status | Pulse Amber | Green | Casette (Unloading) |
| Amber | Green | Cassette Loaded/Online |
| Amber | Pulse Green | Cassette Loaded/Activity |
| Amber | Off (No Light) | Cassette Loaded/Offline |
| Error States | Green | Pulse Amber | Media Wear (Caution) |
| Amber | Amber | High Humidity, No termination on SCSI bus |
| Pulse Amber | Pulse Amber | Self Test (Normal) |
| Pulse Amber | Amber | Self Test (Failure) |
| Other States | Off (No Light) | Off (No Light) | No cassette loaded |
| Off (No Light) | Green | Error (illegal state) |
| Off (No Light) | Pulse Green | Error (illegal state) |
| Off (No Light) | Amber | Error (illegal state) |
| Off (No Light) | Pulse Amber | Error (illegal state) |
| Pulse Green | Off (No Light) | Error (illegal state) |
| Pulse Green | Green | Error (illegal state) |
| Pulse Green | Amber | Error (illegal state) |
| Pulse Green | Pulse Amber | Error (illegal state) |
| Pulse Amber | Off (No Light) | Error (illegal state) |
| Pulse Amber | Pulse Green | Error (illegal state) |
| Green | Amber | Error (illegal state) |
| Amber | Pulse Amber | Error (illegal state) (Write Protect on) |