HP 1050C Plus "Switch power off Check printhead path (Type 2)" (12281 Views)
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Occasional Visitor
mcsieg
Posts: 1
Registered: ‎06-02-2010
Message 1 of 12 (12,281 Views)

HP 1050C Plus "Switch power off Check printhead path (Type 2)"

I try to load a roll and get the message "Paper loaded incorrectly.  Remove paper", so I remove the paper from the rollers.  Then it responds "Initializing.  Please wait."  Then "Ready for Paper."  Then I load the paper.  The carriage head then starts across the track a few inches and stops.  The error message then reads "Switch power off.  Check printhead path (Type 2)".  This pattern repeats each time I try to start the plotter.  What should I do?  Thanks much for you help.

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Outstanding Contributor
DavidZuts
Posts: 15,021
Registered: ‎02-27-2006
Message 2 of 12 (12,263 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

This is a velocity shut down.  You need to turn the power off, open the cleaner door on the right side and slide the cleaners out.  Now move the carriage assembly by hand from right to left and then back again.  Do you feel and obstructions or maybe bumping action.  If bumping action, the belt is bad and needs to be replaced.  It just tight in different sections you may just need to lube the slider rail.  Use a good synthetic oil.  Also clean the encoder if everything else is ok.  There has been an issue with the tube assemblies on this plotter where over time they can bow out and cause path issues.

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printerman-47
Posts: 4
Registered: ‎07-24-2011
Message 3 of 12 (9,948 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

thank you for the detail answer, sir! I have a number of clients with this same problem. And yes, these printer are workhorses, but every horse needs maintenance over time.

we used 3in1 oil, and cleaned the rods first

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Outstanding Contributor
DavidZuts
Posts: 15,021
Registered: ‎02-27-2006
Message 4 of 12 (9,944 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

Never ever use 3 in 1 oil.  It is petroleum based and will cause big problems in the future.  You need to use a synthetic oil.

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JGL123
Posts: 2
Registered: ‎04-05-2011
Message 5 of 12 (8,996 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

Where is the encoder?

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DavidZuts
Posts: 15,021
Registered: ‎02-27-2006
Message 6 of 12 (8,992 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

The encoder is the clear strip that run thru the back of the carriage assembly. It has fine lines on it.
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BAT3987
Posts: 1
Registered: ‎01-01-2012
Message 7 of 12 (8,763 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

What is the name of good synthetic oil to be used int his case?

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DavidZuts
Posts: 15,021
Registered: ‎02-27-2006
Message 8 of 12 (8,759 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

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fusetti
Posts: 3
Registered: ‎01-06-2012
Message 9 of 12 (8,689 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

that error usally means a bad belt possible encoder inspect visually look for wear spots if always stops at same place clean encoder strip be careful in can cut you if making noise going back and forth rubber from belt is stuck on motor on right side clean off with sharp object to get you thru belt will eventually have to be changed
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prepress931
Posts: 2
Registered: ‎01-11-2013
Message 10 of 12 (5,422 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

I know this post hasn't been used lately, but I am having the same problem.  What type of lubriacant is best?  I have silicone grease, would that work?  Also, what is safe to clean the encoder?  Thanks in advance for any help.

 

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Honored Contributor
timwj1
Posts: 900
Registered: ‎08-11-2010
Message 11 of 12 (5,414 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

Do not use grease on the carriage shaft.  Clean the shaft with alcohol, use a light machine oil, HP sells a synthetic oil but it is pricey.   The encoder just needs to be blown off, or wiped with a cloth or a brush to remove any dirt that may be stuck in the sensing holes, as well as the sensor blown out.

If you feel my reply has assisted you in repairing your printer please press the kudos star icon on the left and mark as problem solved. Thank you!

TJ
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prepress931
Posts: 2
Registered: ‎01-11-2013
Message 12 of 12 (5,412 Views)

Re: HP 1050C Plus "Switch power off Check printhead path (Type 2)"

Thanks

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