Problem Head Driver Printer Epson LQ 2190

This experience occurred at the company where I work. At that time there was a mold problem user complaints Epson LQ 2190 printer is not clear.

After the check turns out needle printer head is broken. And immediately I said to the user that the printer should replace the printer head.

After a few days the print head is ready, and I directly install the new print head.

Once completed in pairs, the printer can turn normally.

But what happens after doing test print, the new printer head movements several times a sudden smell of burning in the printer. And spontaneously I turn off the printer directly.

Then I studied in more detail on the motherboard, with a multitester and it's true. Head driver IC on the motherboard is damaged. Incidentally, I have a motherboard lq2180 printer was broken, so I can grab the driver IC to replace. Once completed replace the IC in trying again still can not work.

Then check again the power supply, this time I immediately replace the power supply circuit. And after all the installed printer can work normally.

Of the problem according to my analysis, if the printer is used continuously without stopping will cause overheat.Jika printer head printer head overheat, it will cause short head and a broken head driver IC

The worst of the power supply will be damaged as well.