1, laika ka ai ladat a hkrak ai lam hpe hkra machyi shangun nna, ink jet hpe hkra machyi shangun ai .Shawoi na zawn, byin pru wa ai gaw, hkrang n dan dawng ai, line gaw garan ginhka ai.
2, lead gaw current lapran cross galaw yang, short circuit byin wa nna, board wan hkru mat na re.
