其中，“”是错误代码的“类型”部分。根据RISO RZ系列的技术手册，A类错误通常属于“卡纸/卡原稿”类别。具体到A16，它的官方描述为**“等待版纸/蜡纸从印刷滚筒上取下”**。简单来说，机器正在执行制版动作时，无法确认印筒上的旧版纸/蜡纸已被成功移除，因此停止了整个流程。
: If the black velvet is permanently ruined or missing (common on generic third-party replacement screens), place a clean piece of matte black electrical tape or gaffer tape directly over the strip. Ensure the tape is laid perfectly flat and does not lift at the edges. Step 2: Clean the Optical Master Detection Sensor riso error a16-525
Riso stencils behave best in controlled environments. Keep your print room's relative humidity between 40% and 60% to prevent static cling. riso error a16-525
Wipe them down with a lint-free cloth dampened with a small amount of isopropyl alcohol or mild soapy water to remove tacky ink. riso error a16-525