Riso Error A16-525 <FAST – 2024>

The sensor designed to detect if a master is present on the drum is dirty, broken, or misaligned, creating a "false positive" error (the machine thinks a master is there when it is not) Copytechnet.com .

: Disposal rollers pull the used master into the master disposal box.

For advanced users, specific service parameters can sometimes resolve persistent errors related to drum positioning or sensor sensitivity:

Locate the master disposal rollers (the small rubber wheels near the disposal entrance).

: Empty the master disposal box before it reaches maximum capacity to prevent master sheets from backing up into the drum area. riso error a16-525

: Some users find success by placing a small piece of black matte paper tape (like gaffer tape or electrical tape) over the strip to eliminate reflections. 4. Technical & Service Mode Adjustments

If you'd like to try the , could you tell me: Your specific machine model (e.g., EZ220, RZ200, CV3230)? If you recently replaced the screen or master roll?

操作实践表明，当一直使用原装RISO版纸/蜡纸的设备突然更换为兼容耗材时，可能出现A16-525报错。这是因为兼容版纸的尾部切割或表面反光率可能与原装标准存在差异，从而干扰了机器的检测逻辑。

Avoid using sharp metal tools (like scissors or screwdrivers) to pluck out the master, as you can easily gouge the rubber rollers. Step 3: Clean the Disposal Rollers and Sensors The sensor designed to detect if a master

Check the separator hook (near the disposal box area) for any trapped pieces of master material.

One humid Tuesday it stalled. A small red light blinked: A16-525. Marta rubbed her temple and smiled. Error codes were a language she had learned to read with her fingertips. A16-525 — “feed jam, sensor misread,” said manuals and forums, practical and dry. But Marta preferred stories.

Gently peel the master away from the drum or pull it out of the disposal chute. to avoid damaging the delicate clamps.

The Riso digital duplicator is a workhorse in high-volume printing environments like schools, churches, and print shops. However, encountering an error code can instantly halt your productivity. One such disruptive code is the . : Empty the master disposal box before it

“Okay, ghost,” she said aloud, more to herself than the machine. She opened the feeder and found nothing obvious — no crumpled edges, no stuck staples. Just a stray receipt woven into the pile. Marta held it up: an old café logo, a date, a name smudged by a hurried thumb. The receipt was tiny, ordinary, a private relic lost among dozens of copies.

This error triggers when the machine detects—or thinks it detects—a master stencil stuck on the ink drum when it shouldn't be there. What makes this error notoriously tricky is that it frequently occurs as a "false positive," meaning the drum is completely bare, yet the duplicator stubbornly refuses to clear the alert.

If there is no physical jam, a blind sensor is likely misreporting a jam.

If the error occurs only on a drum that recently received a new screen mesh, the sensor is likely picking up reflections from the screen itself.

Clean the master clamp plate on the drum itself to ensure it is releasing the stencil cleanly.