MFC-640CW 常见问题解答与故障排除 MFC-640CW 不是您的产品? 搜索结果排序: 更新日期 热门程度 3 结果 1. 2011-11-22 When I print, the pages are smudged with ink. What should I do? 2. 2009-11-06 One or more of my colors are not printing (blank). What can I do? 3. 2006-08-29 Why are my sent faxes always received with a black vertical line down the page? 中文 传真 常见问题解答与故障排除