mypros+
Error code reference

Samsung Multifunction Printer Error Code C1-1120

The toner cartridge is at the end of its life.

Samsung codesSamsung multifunction printer codes

The toner cartridge is at the end of its life.

First step from the service manual

Print the supply information report and replace the toner cartridge if life is at the end.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for C1-1120.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What C1-1120 means on a Samsung multifunction printer

The C1-1120 error code on a Samsung multifunction printer indicates that the toner cartridge has reached the end of its rated service life. Samsung printers track toner usage through a page-count and density monitoring system built into the cartridge's chip. When the cumulative print data logged by that chip crosses the threshold defined as end-of-life, the printer triggers this alert and may restrict or halt print operations to prevent output quality degradation from a depleted toner supply.

The toner cartridge chip communicates remaining life data back to the printer's control board continuously during operation. As toner is consumed, the tracked yield approaches the cartridge's rated page capacity. Once that capacity is exhausted or the cartridge chip reports a zero or below-threshold toner level, the C1-1120 code is generated. This is a consumable lifecycle event rather than a hardware malfunction, meaning the printer itself is functioning normally.

The recommended first diagnostic step is to print the supply information report, which provides a detailed readout of the current toner level and page yield data for each installed cartridge. If the report confirms the cartridge life is at or beyond its rated end, the cartridge must be replaced. Attempting to continue printing past this point can result in faded output, streaking, or incomplete page coverage.

Source: manufacturer service documentation.

Common causes of C1-1120

  1. 01

    Toner cartridge fully depleted

    Part replacement

    The cartridge has reached or exceeded its rated page yield and the toner supply is exhausted. Printing the supply information report will confirm the cartridge life is at zero or end-of-life status.

  2. 02

    Cartridge chip reporting end-of-life prematurely

    Part replacement

    In some cases the cartridge chip may register end-of-life before the physical toner is fully consumed, particularly if the printer experienced irregular power cycles or communication errors. The supply information report will show whether the reported life matches expected usage.

  3. 03

    Incorrect or incompatible replacement cartridge installed

    Wiring / connection

    A third-party or refilled cartridge with an unrecognized or improperly reset chip can trigger end-of-life codes even when toner is present. Verify that the installed cartridge is compatible with the specific printer model.

  4. 04

    High-coverage print jobs accelerating cartridge depletion

    Part replacement

    Printing documents with heavy graphics, large solid fill areas, or high toner density shortens cartridge life significantly compared to the rated yield, which is typically measured at around 5 percent page coverage. The cartridge may appear to run out sooner than expected under these conditions.

See the test procedure for each cause

Frequently asked questions about C1-1120

What does C1-1120 mean on a Samsung multifunction_printer?
The C1-1120 code means the toner cartridge has reached the end of its rated service life. The printer's monitoring system tracks toner usage through the cartridge chip and triggers this alert when the cartridge is depleted. This is a consumable replacement notification, not a hardware fault. Printing the supply information report will confirm the cartridge status.
How do I fix the C1-1120 error on my Samsung printer?
Start by printing the supply information report to confirm the toner cartridge life is at end-of-life. Once confirmed, replace the toner cartridge with a new compatible unit for your specific Samsung model. After installing the new cartridge, the printer should recognize it and clear the C1-1120 error automatically.
Is it safe to keep printing when the C1-1120 error appears?
Continuing to print after the C1-1120 alert appears can result in visibly degraded output, including faded text, streaking, or incomplete coverage across the page. While the printer itself is not at risk of damage from a depleted cartridge, print quality will suffer. It is best to replace the cartridge promptly to maintain acceptable output.
How much does it cost to fix the C1-1120 error?
Since this error is caused by a depleted toner cartridge, the fix involves purchasing a replacement cartridge. Depending on the Samsung printer model and whether you choose an original or compatible third-party cartridge, costs typically range from around 20 to 120 dollars. No service labor should be required for a standard cartridge swap.
Will resetting the printer clear the C1-1120 error?
A basic power cycle or soft reset will not permanently clear the C1-1120 error if the cartridge chip continues to report end-of-life status. The error is tied to the data stored on the cartridge chip, so the only reliable resolution is replacing the depleted cartridge with a new one. Some third-party refilled cartridges include a reset chip, but compatibility and reliability can vary by cartridge supplier.

Related Samsung multifunction printer codes

All Samsung multifunction printer codes
View all 59 Samsung multifunction printer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass