Xerox “093-919 / 092-310” — fuser warm-up error (won’t heat) — step-by-step fix

Joe B.

Expert ★★★★★ 27,853 satisfied customers

Specialities: Xerox WorkCentre/AltaLink/VersaLink, Fuser & thermistor faults, DC controller, Low fuser temperature

Fix Xerox fuser warm-up error — 093-919 / 092-310, low heat, thermistor/thermostat, NVM reset

Technician

Hey! Let’s troubleshoot your Xerox fuser warm-up error. Those codes 093-919 and 092-310 usually mean the fuser didn’t reach target temperature in time — often a loose fuser connector, failed heater lamp, thermistor/thermal fuse, or DC controller sensing issue.
Quick questions: which model (VersaLink, AltaLink, WorkCentre)? Did this start after moving the device or a power outage? Any recent fuser replacement or firmware update?

Customer

It’s a Xerox VersaLink C405. After a brownout it shows 093-919. It tries to warm up and then faults again. We haven’t changed the fuser.

Technician

Thanks. A brownout can trip the thermostat/thermal fuse or leave the AC drive in a bad state. Sometimes the fuser slightly unseats and the thermistor reads “cold”, triggering low fuser temperature errors like 092-310 and 093-919.
Plan: 1) Power cycle with proper shutdown. 2) Reseat the fuser module and inspect connectors/pins. 3) Check line voltage and the rear AC inlet. 4) Run a Service/NVM reset to clear the fault if temps look normal. 5) If readings stay cold, we’ll test/replace the fuser.

Customer

Where is the fuser and how do I reseat it without damaging anything?

Technician

Step 1 — Safe power & fuser reseat
1) Shut down from the control panel → turn off the rear switch → unplug for 2–3 minutes (discharges the fuser heater).
2) Open the rear door. The fuser assembly is the hot roller unit with two thumbscrews/latches. Release latches and pull straight out by the handles.
3) Inspect for burn marks, torn film, bent pins. Clean light debris; do not touch the roller surface.
4) Firmly slide the unit back in until it clicks. Re-lock latches and power on. See if the fuser warm-up error clears.

Customer

After reseating, the code changes to 092-310. It still won’t ready up. What next?

Technician

Step 2 — Power/voltage & connector checks
• Plug the printer directly to a wall outlet (no surge strip/UPS) — low line voltage can cause fuser not heating.
• Inspect the rear AC socket and the fuser’s white multi-pin connector; gently reseat the harness.
• If available, try another known-good power cord rated for the device.
If codes persist, we’ll do a DC controller reset and check sensor readings.

Customer

How do I run the NVM/service reset you mentioned?

Technician

Step 3 — Service/NVM reset (clears latched fuser fault)
On many Xerox models: enter Service Mode (hold Home → tap device info area sequence) → NVM/Chain-link → choose the Fuser Temperature/Fuser Fault Clear item and set to the reset value → power cycle. (Exact path varies by VersaLink/AltaLink firmware.)
This tells the DC controller to re-check the thermistor. If temps rise normally, the warm-up error should clear.

Customer

If it still fails after reset, does that mean the fuser is bad?

Technician

Step 4 — Decide: replace fuser vs. board issue
• If the printer warms a bit then faults, the heater lamp or thermistor is often failing — replace the fuser unit (use the correct 110/220V part).
• If there’s no heat at all, suspect the AC drive/triac on the low-voltage power supply or DC controller. But in 8/10 cases a fresh fuser fixes 093-919 / 092-310.
• After replacement, always clear the NVM fuser count if your model requires it, and update to the latest firmware.

Customer

We print labels sometimes. Could heavy media cause these warm-up errors?

Technician

Yes — thick stock absorbs heat. Make sure the tray is set to the correct media type/weight and use the Bypass path if recommended. Prolonged heavy media can stress the fuser thermostat and trigger low temperature faults. Let the device cool between long jobs.

Customer

After reseating and NVM reset the printer readies. Any final checks so 093-919 doesn’t come back?

Technician

Final checks:
• Print 3–5 pages of plain paper; confirm there’s no smearing (means the fuser is heating correctly).
• Keep the device on a dedicated wall outlet; avoid extension cords.
• If the fuser has >100–150k pages or shows wrinkled film, plan a preventive fuser replacement.
• Update device firmware to the latest build to improve temperature control.

Customer

Great — no more warm-up error and prints look good. Thanks!

Technician

Summary: To fix Xerox 093-919 / 092-310 fuser warm-up error, power down, reseat the fuser assembly, verify voltage and connectors, run a Service/NVM reset, and replace the fuser if the thermistor/heater is faulty. Need help with your model’s service menu? Open the chat.

Quick answer: the accepted fix

Accepted fix for Xerox 093-919 / 092-310 fuser warm-up error: safe power cycle → reseat and inspect the fuser unit → check wall power and cables → run NVM/Service fuser fault clear → if heat is still low, replace the fuser and update firmware.

FAQ

Step-by-step (Xerox devices)

1. Shut down properly; unplug for 2–3 minutes to discharge the fuser.
2. Remove, inspect, and firmly reseat the fuser unit; check connectors and the power cord.
3. Enter Service Mode and run the NVM/Chain-link fuser fault clear; then power cycle.
4. If errors persist, replace the fuser (correct voltage) and update firmware; escalate to DC/AC board only if a new fuser fails.

Notes for mixed fleets (Office)

1. Keep Xerox devices on dedicated wall outlets; avoid power strips that drop voltage during warm-up.
2. Standardize media settings via policy to prevent overheating or low-temp faults.

Sources

• Xerox Support — Model-specific diagnostics
• Xerox — Solutions & firmware
• How a laser printer fuser works

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