Installation and handling requirements It must be completely disconnected prior to installation; otherwise the disc will not be readable. The head's objective lens must not be touched or dropped during installation. The potentiometer must not be adjusted by yourself. Compatibility Compatible with head models HD870, SFHD62, and SFHD65. Electrostatic protection and preuse procedure The head is equipped with electrostatic protection solder joints. Before use, heat with an antistatic soldering iron, then unplug and open the protective solder joint (silver tin point) on the head. Quality and testing All products in our are only after factory testing confirms OK. The quality control process is very strict. Key benefits Reliable disc reading when installed correctly, reducing the risk of read errors. Clear installation and handling guidelines to prevent damage to the sensitive read head components. Broad compatibility with multiple head models (HD870, SFHD62, SFHD65) for and refurbishment work. Builtin electrostatic protection to minimize static damage during handling and installation. Rigorous factory testing and strict quality control ensure consistency and performance. Use scenarios Scenario 1: or refurbishment of optical drives that use head models HD870, SFHD62, or SFHD65, where a compatible replacement read head is required. Scenario 2: Stocking spare parts in service shops or OEM refurbishing facilities to quickly failed read heads in compatible drives. Scenario 3: Field service in controlled environments where technicians follow antistatic procedures and careful handling to prevent damage to the read head during installation.