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B820dn- 黑白页式打印机 N21300B B840n/B840dn- 黑白页式打印机 N21301B 用户手册 在使用打印机之前，请务必详细阅读本手册，以确保正确安装及使用。 请妥善保管本手册，以便日后随时查阅。 第 1章 安装 ··················································· 11 第 2章 基本操作 ··········································· 51 第 3章 管理维护 ··········································· 99 第 4章 故障处理 ········································· 111 附录 ····························································· 133 索引 ····························································· 141 安装篇
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