HP LaserJet Printers Troubleshooting a 50 Service Error or Error 50

Table of Contents

Introduction

A 50 Service Error or 50 Error on a Hewlett-Packard LaserJet printer indicates a problem with the fuser of the printer. A number of factors may cause the error. Some of these factors include the following:

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Troubleshooting 


NOTE: Disconnect the data cable and remove any additional memory to prevent any misleading symptoms.


The tables below describe fuser errors in greater detail for some HP LaserJet printers.

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HP LaserJet 5Si and HP LaserJet 8000 printers 

The 50 service error message is a service message that means the fuser is malfunctioning, which may be from either an overheating or under-heating condition.


Message

Error log category/message


Description

50.1 FUSER ERROR
CYCLE POWER

Service message/ 50.01.00

Fuser low temperature failure

50.2 FUSER ERROR
CYCLE POWER

Service message/ 50.02.00

Warm-up failure (timed out)

50.3 FUSER ERROR
CYCLE POWER

Service message/ 50.03.00

Over temperature failure

50.X4 FUSER ERROR
CYCLE POWER

Service message/ 50.04.00

Bad fuser

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HP LaserJet 8100 printer 

The 50 error message is a critical error message that means a fuser error has occurred. Refer to the table below to find the error you are getting for more specific information.


Message

Error log category/message


Description

50.1 FUSER
ERROR

Critical Error/ 50.01.00

Low Fuser temperature.

50.2 FUSER
ERROR

Critical Error/ 50.02.00

Fuser warm-up service.

50.3 FUSER
ERROR

Critical Error/ 50.03.00

High Fuser temperature.

50.4 FUSER
ERROR

Critical Error/ 50.04.00

Faulty Fuser.

50.5 FUSER
ERROR

Critical Error/ 50.05.00

Inconsistent Fuser.

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HP Color LaserJet 8500 printer 

Refer to the table below to find the error you are getting for more specific information.


Message

Error log category/message


Description

50.1 FUSER ERROR
CYCLE POWER

50.00.01

Indicates that a low temperature error has occurred in the fuser.

50.2 FUSER ERROR
CYCLE POWER

50.00.02

Indicates that a warm-up error has occurred in the fuser.

50.3 FUSER ERROR
CYCLE POWER

50.00.03

Indicates that a high temperature error has occurred in the fuser. This error is saved in the controller board by an electrical charge in capacitor C259.

50.4 FUSER ERROR
CYCLE POWER

50.00.04

Indicates that a fuser drive or power unit error has occurred in the fuser.

50.6 FUSER ERROR
CYCLE POWER

50.00.06

Indicates that a heater error has occurred in the fuser.

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HP Color LaserJet 4500 printer

The 50 error message is a message that means a fusing error has occurred. Refer to the table below to find the error you are getting for more specific information.

Message

Message

Description

50.1 FUSER ERROR

50.01.00

Low fuser temperature

50.2 FUSER ERROR

50.02.00

Fuser warm up service

50.3 FUSER ERROR

50.03.00

High fuser temperature

50.4 FUSER ERROR

50.04.00

Faulty fuser

50.5 FUSER ERROR

50.05.00

Fuser voltage mismatch

50.6 FUSER ERROR

50.06.00

Fuser heater cutoff

50.7 FUSER ERROR

50.07.00

Fuser motor malfunction

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HP Color LaserJet 4000 and HP LaserJet 5000 printers 

The 50 error message is a message that means a fusing error has occurred. Refer to the table below to find the error you are getting for more specific information.


Message

Error log category/message


Description

50.1 FUSER ERROR

50.01.00

Low Fuser temperature.

50.2 FUSER ERROR

50.02.00

Fuser warm-up service.

50.3 FUSER ERROR

50.03.00

High Fuser temperature.

50.4 FUSER ERROR

50.04.00

Faulty Fuser.

50.5 FUSER ERROR

50.05.00

Inconsistent Fuser.

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