HP Original Cartridges




Reliable Remanufactured Cartridges

One of the merits of the P4014 against a new printer is the low cost of good re-manufactured cartridges.


At the moment we don't sell in the US, but we hope to soon

Error Message 58 for HP P4014, P4015 & P4515 Printers.

top-right-photo

Error 58 is a problem with the environment sensor on the fan in the left rear of the printer. The environment sensor in this case is just a thermistor indicating the temperature. If the environment temperature measurement is out then the fuser will take the wrong time to come to temperature and give 50.2 and 50.3 errors.

58.XX ERROR

58 Error on LaserJet P4014 series printers is the environment Sensor / air temperature sensor on FN101 out of range. In all probability the printer has been badly placed so the sensor has been driven too hot or cold. Otherwise ensure connector J63 is seated otherwise perhaps replace TH3 RK2-0359. However it's not a very likely fault, so it might be worth considering some other factors first.

HP's service manual says:

The environmental sensor (TH3) has experienced an error.

Verify that the environmental sensor connection at connector J63 on the high-voltage power supply PCA is securely seated. If the error persists, replace the environmental sensor (TH3).

Remedies

The sensor is on a bracket on the main fan (FN101) at the left rear of the printer. (see here). The thermistor leads only go through the high-voltage power supply because it acts as an interconnect from the left to right side of the printer. The leads are actually heading into the DC-controller. The thermistor itself is a little bead- the rest of the assembly is just a metal bracket with plastic innards to support the thermistor in the airflow.

Measuring a thermistor gave 10.8 kilo-ohms at 23 centigrade changing very rapidly when I touched it with my finger to stabilise at 8.86 kilo-ohms. It is this change that the DC controller is measuring using an A to D converter.

Note 1 that if the printer was recently moved from cold conditions in a warehouse (or indeed a position next to a hot radiator) then the sensor could have been driven out of range.

Note 2 that what is being measured is an analogue quantity. If the printer is not plugged directly into a wall-socket but into an extension lead, anti-surge plug or UPS then the mains voltage might conceivably be sufficiently wrong to trigger this sort of error alongside the fuser errors 50.2 and 50.3 - so if those errors are being logged as well that might suggest the real problem is either the mains feed or the power supply board.

Note 3 that in the past "58 error" has been associated with memory sensors (for cartridges and suchlike) so if your printer isn't a LJ-P4014 series then look at a general errors page on the problem or try to find the service manual for your specific machine.

Web Research

I tried querying Google with P4015 "58.2 ERROR" in quotes (because I think that is what the printer says) and got a suggestion of 6 results all of them familiar (and very old) lists.

Out of interest I tried P4015 "58 ERROR" (still with the error in quotes and got 10 results but the new ones weren't relevant. Trying a few other formulations was no better

Remarks

We rather suspect that this error is there because it has to be possible for the environment sensor to fail or be driven out of range so it is intellectually possible and the designers took it into account. It probably doesn't happen much.

The environment thermistor is TH3, the other two thermistors are on the fuser. The idea seems to be that the printer measures the environment temperature at startup and then estimates what the timing will be for bringing the fuser up to operating temperature. It then gives the fuser an adequate time and then measures it's temperature. If the fuser has achieved the correct temperature the printer goes to READY but if it is too cool it goes to 50.2 or 50.8 and if it is too hot it goes to 50.3 or 50.9.

Air temperature has an impact on the performance of the OPC and the transferability of toner from developer to OPC so the printer may be making adjustments for this. Colour laser printers have a more elaborate environment sensor incorporating a humidity gauge and seem to do more with the information.

--