Specification: Item Type: Print Head Material: ABS Weight: Approx. 100g/3.53oz Application: For R1390 L1800 R390 R270 R1430 1400 Package List: 1 x Print Head Note: 1. The product is brand new and may contain some protective fluid to preserve the accessories. This is normal. 2. Solution for compatibility issues: Reset the printer by following these steps. Turn on the printer if it is not already on. Wait for the printer to come to a complete stop. Disconnect the power cord from the back of the printer and unplug it from the wall outlet. Wait at least 60 seconds. Plug the power cord back into the wall outlet. It is recommended to plug the printer power cord directly into the wall outlet. Reconnect the power cord to the back of the printer. Turn on the printer if it does not turn on automatically. The printer may need time to warm up. The indicator light may flash and the print head carriage may move. Wait until the printer has finished warming up and is completely stationary before proceeding. If the issue persists, ensure the original ink cartridges and ink are properly installed. Features: Function Test: Only print heads that have passed 100% functionality testing are shipped. The functionality of our print heads can be trusted. Stable Performance: Designed for reliable and consistent printing, our print heads offer stable performance and are a secure replacement option for damaged units. Durable ABS Material: Made from high-quality ABS material with precision machining, the print head is lightweight, rust-resistant, colorfast, and durable. Easy Installation: No complex assembly required. Simply remove the old print head and install the new one. Always disconnect power before installation. Wide Compatibility: Compatible with R1390, L1800, R390, R270, R1430, and 1400 printers. Please verify your printer model before purchase.