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BillyWJD
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DesignJet 500 plus

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HP DesignJet 500 Printer series

My DesignJet has error code 21:10 indicated. What is this and how do I sort it out, please?

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EOJTech
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As a general rule, it means there is a problem with the service station and it needs replaced.

You did not say if the error came up on its own, or if it came up after performing maintenance. Check the following before replacing the service station:

1. Make sure the carriage belt is in good shape, not broken or coming apart. Pay particular attention to the ends, look for the telltale pile of belt dust.

2. Make sure the trailing cables (gray ribbon cables) are flat, move freely with the carriage, and are not pinched.

3. Clean and lubricate the carriage rod.

If the error remains, it's likely the service station is bad. If you replace the service station, it's a good idea to update the firmware afterwards.

The service station is easy to replace, and there is a procedure in the manual along with a list of calibrations that need to be done after repairs are made.

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