| Model | Function | Original | Part number | Replacement | Information |
| SL90 | FEH | 882550810 | |||
| SL90 | DR | DSH27BR | A6050189A | ||
| SL90 | UDR | A6760117A | |||
| SL90 | E/A/CTL | A6761061A | |||
| SL9090 | FEH | 882550810 | |||
| SL9090 | VH | DSR27R | A6762083A | ||
| SL9090 | DR | DSH27BR | A6050189A | ||
| SL9090 | UDR | A6760117A | |||
| SL9090 | E/A/CTL | A6761061A |
| Abbr. | Function |
| A/CTL | Audio / Control |
| ASSY | Complete assembly |
| DR | Drum |
| E/A/CTL | Erase / Audio / Control |
| EH | Erase head |
| FEH | Full erase head |
| UDR | Upper drum |
| VH | Video head |
