LME 3-month copper last at $5,390/ton, down $30 on London PM kerb in quiet market. Japanese consumers holding off buying, expecting further losses on LME copper, weaker JPY also damping buying interest, says trader at Japan house. "If the market went down to $5,200, they might come to purchase." Adds, if copper rebounds past psychological resistance at $5,500, Japanese consumers may also return, in case metal stages rally.