Updated: Jan 28
How to fix the 59.F0 Error
59.F0 Error Description:
This 59.F0 (that is F-zero, not F-oh) error is primarily caused by a transfer alienation failure in which the ITB is stuck and unable to rotate, the SR9 sensor (the primary transfer roller disengagement sensor) has gone bad or the fuser drive assembly has failed.
The 59.F0 error is a common error on the CP and CM, and M version HP Color LaserJet products. Printers such as the HP Color LaserJet CP3525, CP4025, CP4525, M651, M680 and CM4540 encounter the dreaded 59.F0 error often.
Even the newer LaserJets M477 and M452 encounter the 59.F0 error. However, in the case of these models, the cause is a timing issue which can be resolved by updating the DC Controller firmware (contact Metrofuser for further information regarding this fix). Either way, diagnosing the 59.F0 error issue could be time consuming and costly.
For a 59.F0 error, the usual culprit is a failing Fuser Drive Assembly; this assembly drives the fuser and also turns a flag on your transfer belt assembly.
Solution to the 59.F0 Error
When troubleshooting the 59.f0 error, we recommend starting with the transfer belt itself. Remove the belt from the printer. On the right-hand side there is a white round protrusion that engages the belt with the drive assembly. You can rotate this clockwise (2) to rotate the belt and if all goes well, unlock the sensor flag into position (1).
If the flag fails to engage downwards or spin, then replace the belt. This is a common issue on the CP3525, CP4025, CP4525 and CM4540 series products.
If replacement of the transfer belt does not resolve the 59.F0 error, then it could either be the Fuser Drive Gear assembly or the solenoid located on the assembly. Gaining access to this assembly is time consuming and could take up to four hours. Due to the amount of assemblies required just to gain access to the Drive Assembly, plan on at least two hours to obtain access to the solenoid itself.
Much like the solenoids that release to engage the Tray 2 pickup drive, the Fuser Drive Assembly solenoid may also be sticking due to the wear of the noise dampening sponge, which can expose the glue causing the timing of the Fuser Drive Gear to slip.
The picture above shows the Fuser Drive Assembly removed from the machine. The highlighted screws are required to be removed in order to access the solenoid.
The next picture shows the access point of the screws on the assembly still located inside the printer. These screws are accessible by removing the back cover, DC Controller, Low Voltage Power Supply and High Voltage Power Supply (both upper and lower).
The Main Drive Assembly (MDA) is not required to be removed to gain access to
the solenoid. After removal of the solenoid, denatured or 99% alcohol can be used to remove the glue from it. Remove the spring and armature from the solenoid. Thoroughly clean any residual adhesive left by the old solenoid pad. Be sure to also clean the underside of the armature before reassembling the solenoid.
Three or four layers of electrical tape can be applied in order to act as a replacement noise dampener. It is also recommended as to eliminate the magnetic charge that could build up when the solenoid arm strikes the base.
The solenoid is not always the issue. If the sponge is intact, and it does not stick, the Fuser Drive Assembly may very well be the issue. The part number for the Fuser Drive Assembly solenoid is RK2-0950.
If the transfer belt and Fuser Drive Assembly solenoid are good, the gears on Fuser Drive Assembly may be out of alignment. The three gears at the backside of the solenoid are keyed to keep them properly synchronized. Often, these gears will skip a tooth and then be out of sync, causing a 59.F0 error. Once the Fuser Drive Assembly is removed from the printer, you can easily remove two of these three gears and realign them so that the keyed gaps and teeth are in the right spots.
The Fuser Drive Assembly part numbers are as follows:
HP Color LaserJet CP4520 CP4525 Simplex RM1-6702
59.F0 Error Repair Difficulty Level
The 59.F0 level of repair is a 9 out of 10. Depending on the level of technical expertise, this procedure should take approximately four to five hours from start to finish if replacing the Fuser Drive Assembly.
For technical assistance or to schedule a training module please contact us at 908-245-2100.
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