联想LenovoLJ2650DN打印很淡的问题

联想LJ2650DN只有一点点字迹是什么原因？有哪位英雄知道怎么解决吗？硒鼓激光经测试正常，现附上自检打印效果图:file://C: Documents and Settings Administrator Application Data Tencent Users 184174892 WinTemp RichOle HY(X { Y } U4 ` $ } 9UUI { fplrur . png file:///C: Documents and Settings Administrator Application Data Tencent Users 184174892 WinTemp RichOle HY(X } U4 ` $ }