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HP Forum Archive 18

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voltage of 9114B disk drive
Message #1 Posted by Gonzalo Fernandez (Spain) on 25 Sept 2008, 7:56 a.m.

I would like to bypass the battery and associated circuit in the battery plastic case. What DC voltage and current should I feed to the 9114B battery pack (with the innards removed)? A transformer that supplies 6V DC with 2A current?

thanks

      
Re: voltage of 9114B disk drive
Message #2 Posted by Iņigo Rodriguez on 25 Sept 2008, 10:21 a.m.,
in response to message #1 by Gonzalo Fernandez (Spain)

Hello Gonzalo, You need 6V and 2A. You can download this file: http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=78. This is the 9114 repair manual.

Best regards. Iņigo Rodriguez (Spain) ira[arroba]claro.jazztel.es

      
Re: voltage of 9114B disk drive
Message #3 Posted by Egan Ford on 25 Sept 2008, 10:38 a.m.,
in response to message #1 by Gonzalo Fernandez (Spain)

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=876

Page 3 section d, E.g.:

            
Re: voltage of 9114B disk drive
Message #4 Posted by Gonzalo Fernandez (Spain) on 25 Sept 2008, 2:14 p.m.,
in response to message #3 by Egan Ford

thank you very much!

      
Re: voltage of 9114B disk drive
Message #5 Posted by Garth Wilson on 25 Sept 2008, 2:48 p.m.,
in response to message #1 by Gonzalo Fernandez (Spain)

Does it take the same battery pack as the Thinkjet printer? When my battery pack went out and I saw what they wanted for a new one, I wasn't about to pay their price. Until I could make my own power supply, just for kicks I put a 9V battery on there. It worked, but after about six full pages the battery could no longer deliver enough current, even though it was still virtually new for other applications. I made a 7.8V regulated power supply. It cost me fifty cents. I had everything I needed except one of the diodes, and that diode was fifty cents. I used the printer with that power supply for many years.

            
Re: voltage of 9114B disk drive
Message #6 Posted by Diego Diaz on 25 Sept 2008, 4:01 p.m.,
in response to message #5 by Garth Wilson

Hi Garth,

To your question, the answer is no.

Thinkjet printer battery pack is build usng 6 NiCd in series (7.2v nominal) of the same type you can find in any 41/71 peripheral battery pack.

Batteriy packs for 9114A/B use a 6v Lead-Acid batery.

Cheers.

Diego.

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