59.90Color LaserJet Pro MFP M479fdw

HP Color LaserJet Pro MFP M479fdw error 59.90: Fix

The HP Color LaserJet Pro MFP M479fdw error 59.90 relates to a fault in the motor that drives the fuser assembly. If the fuser fails to rotate at the required RPM during the heating phase, the printer stops operation to prevent permanent damage to the pressure rollers.

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Common causes

  • 1Fuser assembly obstruction.
  • 2Worn pressure roller.
  • 3Fuser motor failure.
  • 4Toner buildup on rollers.

Solutions

Quick Diagnosis

If you hear grinding sounds from the rear of the machine during warm-up, the fuser drive gears or the rollers themselves may be physically stuck.

Step-by-step Solution

  1. Turn off the printer power.
  2. Open the rear access door to view the fuser area.
  3. Check for paper scraps or melted labels caught in the rollers.
  4. Gently clean excess toner dust from the fuser entrance.

Prevention and Maintenance

Only use laser-approved media. Labels and thermal papers are common culprits for fuser jams. An annual checkup keeps rollers spinning freely.

When to Call a Technician

If there are no physical obstructions in the fuser path, the fuser motor or assembly likely requires replacement by a pro.

Equipment Specs