If your error specifically mentions the or Drum , you can physically reset the counter using a temporary jumper wire or a 56-ohm resistor:
This is 100% safe, works on all firmware versions, and costs under $10. It’s the real "fix" that everyone wishes firmware could provide.
Once a cartridge reaches its factory-programmed page limit, the chip sends a "Toner Exhausted" signal to the printer. The firmware then locks the machine, refusing to print even if there is plenty of usable toner powder left inside.
The Samsung CLX-3185 (and its variants like CLX-3185FN, CLX-3185FW) uses (also called CRUM chips – Customer Replacement Unit Monitor). These chips track:
For the Samsung CLX-3185, the safer and more standard route is to simply buy or a reset gear kit .
Press Menu -> System Setup -> Maintenance -> Clear Settings .
Left-click and hold your custom firmware file (e.g., FIX_CLX3185_V4.00.01.46.hd ).
: Connect the printer via USB cable (not Wi-Fi). Ensure you have the printer's Serial Number, firmware version, and CRUM number, as many fixes are unique to specific machines. Enter Download Mode : Turn off the printer. Hold the Stop button while pressing Power .
| Method | Effectiveness | Risk Level | |--------|--------------|-------------| | Official firmware update | Does reset toner; only fixes bugs | Low | | Modified/hacked firmware | Can disable chip check, but rare for CLX-3185 | High (brick risk) | | Manual button sequence reset | Works for 80% of users | None | | EDC mode force override | Works temporarily | Medium |
Once you apply a firmware fix, you never need to reset toner again. Fact: Even modified firmware only extends the override; chips still need periodic resetting.
To use this method, you generally need a custom firmware file tailored to your specific printer's Serial Number and CRUM number. Extract Files : You will typically find files like usbprn2.exe and a firmware image (often with a extension) inside the Download Mode
is a reliable color laser printer, but like many Samsung models, it is designed to stop printing when the toner cartridge chip signals that toner is low, even if there is usable powder remaining. This often results in expensive, premature cartridge replacements.