Ricoh: Sc569-00
(Ensure it has cooled down first). Look into the fuser cavity where the unit was seated. Locate the sensor on the left side of the cavity.
This article provides a deep dive into what the SC569-00 error means, its common causes, and step-by-step solutions to get your Ricoh device back online. What is the Ricoh SC569-00 Error?
: Ricoh has released technical bulletins (e.g., for MP C6502) suggesting that Engine firmware updates (Ver. 1.29:08 or newer) can help prevent the camshaft from slipping out of position.
If you have performed a power cycle, cleaned the sensor, and verified that there are no obvious paper jams in the fuser area, the error may be caused by a faulty pressure release motor or a damaged harness. A certified Ricoh technician can use service mode (SP mode) to diagnose the motor functionality and replace components. sc569-00 ricoh
Following a fuser maintenance kit installation, the pressure roller might not be perfectly aligned, triggering the sensor error. Step-by-Step Troubleshooting Guide 1. Preliminary Steps (Power Cycle)
Note: SC569-00 differs from SC569-01 or -02, which point to edge thermistors. Confirm exact sub-code on your machine’s panel.
To translate: The printer’s central processing unit (CPU) monitors the AC power supply to the fusing lamp. The "zero cross" refers to the point where the AC voltage waveform crosses zero volts. When the fusing thermistor (a temperature sensor) fails to detect the correct zero cross signal or detects an abnormal frequency, the printer instantly halts operation and displays SC569-00. (Ensure it has cooled down first)
If cleaning fails, swap out the sensor. Technicians often source a working sensor from a scrap unit or install a brand-new part to resolve the thermal timing fault. 3. Test and Inspect the Pressure Release Motor and Gears The mechanical components must move freely without binding:
: Do NOT use lubricant on the one-way gears or their shafts, as this will cause them to slip.
The motor responsible for moving the pressure roller might be defective or stalled. This article provides a deep dive into what
: A frequent cause is a paper jam that has occurred within the fuser or paper exit area. If paper is stuck, it can physically block the pressure release mechanism from moving to its home position. Paper Weight/Type
Warning: Incorrect changes in service mode can permanently damage the machine.
