Specifically, indicates a Master Disposal Jam or a Disposal Motor Timeout . It means the machine tried to compress or move a used master sheet into the disposal box, but the disposal mechanism failed to complete its cycle within the strictly allotted timeframe. Common Causes of the Error
: Ensure there are no paper jams or obstructions that could be causing the error.
. While it often signals a literal stuck master, it is frequently triggered "falsely" due to sensor issues or aftermarket parts. 1. Primary Meaning: Awaiting Master Removal At its core, code
For advanced users, specific service parameters can sometimes resolve persistent errors related to drum positioning or sensor sensitivity: riso error a16-525
: Open the front door of your Risograph, release the drum lock, and slide the print cylinder out of the machine.
If the machine cannot pull the master off the drum, it cannot dispose of it.
The official service manual defines as: "Awaiting master removal — Master remains on print drum." Specifically, indicates a Master Disposal Jam or a
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If the drum itself is clean, the physical sensor inside the machine body may be dirty. Ink mist, paper dust, and debris can easily cloud the sensor lens.
Follow these steps sequentially to resolve the A16-525 error and restore your duplicator to working order. Step 1: Empty and Reset the Master Disposal Box Primary Meaning: Awaiting Master Removal At its core,
Locate the master detection sensor (usually situated above the drum area) and wipe it gently with a soft, lint-free cloth.
Open the machine's covers and inspect for any paper jams. Clear any jammed paper carefully to avoid damaging the machine.
: Empty the master disposal box before it reaches maximum capacity to prevent master sheets from backing up into the drum area.