USDJPY is facing the resistance of the upper line of the price channel on 4-hour chart, a clear break above the channel resistance will signal completion of the downtrend from 84.17 (Mar 15 high), then further rise to 83.00 area could be seen. On the downside, the downtrend could be expected to resume after touching the channel resistance, and as long as the channel resistance holds, one more fall to 78.00 area to complete the downward movement is still possible.