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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.
Iñigo Rodriguez (Spain)
ira[arroba]claro.jazztel.es
Posts: 1,619
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Joined: May 2006
Posts: 887
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Joined: Jul 2007
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.