Instruction is you should not have done that in the first place. And now, probably, the only thing you can do is send the printer to authorised EPSON service, or buy a new one. Good luck.
first of all i want to know how he opened the head if he opened it by hitting the head from back side towards front side from its heat sink than i m afread he must have damaged the head and if he opned it by a proper press than its ok reply me did he fine any broken pins from the head or its all right just an opened only if than sure i can help u don worry just write me back the ecact status of the head
thnx