The head assembly features electrostatic sensitive solder joints. Before use, heat with an antistatic soldering iron, then unplug and expose the solder joint (silver tin point) on the head. Compatibility and model notes Compatible with HD870 singlehead generation and with SFHD62 / SFHD65 series heads. The replacement is straightforward, designed for simple field swaps when installed correctly. Important installation and safety guidance Incorrect installation can damage the head or burn the tube. Nontechnical personnel should obtain replacement directly; installation is simple when following proper steps. If installed incorrectly, the head may not read discs properly. Ensure the system is completely disconnected from power before starting. The disc will not read correctly if power is not fully removed. Do not touch or drop the objective lens during installation. Do not adjust the potentiometer yourself. Usage scenarios Field replacement in an HD870 singlehead reader to restore disc reading capability. Upgrading SFHD62 or SFHD65 head assemblies to maintain reliability and performance. Maintenance in a lab setting where an electrostaticsafe replacement head is needed to maintain optical read/write consistency. Key benefits ESsafe solder joint design helps reduce risk of electrostatic damage during handling. Clear compatibility across HD870, SFHD62, and SFHD65 models. Simple, straightforward replacement process suitable for technicians and trained personnel. Emphasizes careful handling of optical components (objective lens) and avoidance of unauthorized potentiometer adjustments to maintain performance.