Question about HP DesignJet 750c plus InkJet Printer
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Posted on Jan 02, 2017
SOURCE: error code 070020
From the service manual:
One of the Drop Detection errors has occured - or, during the Drop Detection no drop was detected.
Pen checking is set to OFF.
1. Perform the drop detect calibration
2. Troubleshoot the cartridges and the drop detector
3. If required, replace the service station
4. Check the cable assembly and the main PCA.
If you are inclined, I can upload the service manual for you which tells you how to enter the service mode and perform the drop detect calibration. Warning: If this is done incorrectly, it could render your machine useless so if you are not inclined to do so, hire a professional to do it. Otherwise let me know and I will upload the manual for you.
Posted on Feb 18, 2009
The sad part unfortunatly is that the sensor on the carrage is below minimum specification. The only solution is to change the carrage as a unit P/N C4713-60039 and its going to be expensive. Normally the carrage belt would be replaced at the same time.
Posted on Feb 23, 2009
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