A:AnswerInstructions come with the new toner cartridge-it’s very easy to get to and replace. Just make sure the toner cartridge is the one for your specific model printer.
A:AnswerBecause it's a laser printer it doesn't have an "ink tank". The best thing to do is to replace the toner cartridge. You can get a replacement at https://www.bestbuy.com/site/hp-134a-standard-capacity-toner-cartridge-black/6474703.p?skuId=6474703
A:AnswerHello Joe, the HP LaserJet M234sdw Laser Printer utilizes the HP 134A Black Standard Size Toner Cartridge and the HP 134X Black High Yield Size Toner Cartridge.