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Hp-85/9815/9825 tape capstan creation & 9815 installation procedure. - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: Hp-85/9815/9825 tape capstan creation & 9815 installation procedure. (/thread-83577.html) |
Hp-85/9815/9825 tape capstan creation & 9815 installation procedure. - Etienne Victoria - 12-01-2005 Hi all, This is just to report on successful tape capstan repairs if it can help somebody. I've put on my ugly "site" 2 step-by-step procedures: - How to rebuild a new tape capstan for the Hp 85/9815/9825 from a tap joint. - How to change your 9815 A/S Tape capstan. Next step will be "Silencing your 9815 printer on demand". As soon as I understand how to include pictures in articles, I'll post an article on the forum. Critics & suggestions are welcome!
Etienne
Re: Hp-85/9815/9825 tape capstan creation & 9815 installation procedure. - Tony Duell - 12-02-2005 I've not tried any of this, but a few ideas... Once you've dismantled the machine as far as you did, it's very easy to go a bit further and take the tape drive out. On a 99815 (any model), undo the 2 screws on the tape drive PCB, free the left side panel from the base, then unplug the tape drive PCB from the edge connector on the PSU/printer PCB and take the lot out. IIRC 2 more screws hold the tape drive to the side panel.
Once it's out, the motor is electrically isolated from everything else (the motor drive amplifier is on the PSU/printer PCB). You could then connect a DC bench supply to the motor and get it to spin so you could use the X-acto blade to scrape off the remains of the old rubber.
Re: Hp-85/9815/9825 tape capstan creation & 9815 installation procedure. - Etienne Victoria - 12-02-2005 Thanks for the feedback Tony! You're right, getting the whole tape subassembly out is much better than merely fixing it in place!
You may see the unscrewed assembly here:
I'll update the procedure at my next maintenance operation (ie Shut-upping the printer on demand). Thanks again!
Etienne
Re: Hp-85/9815/9825 tape capstan creation & 9815 installation procedure. - Vassilis Prevelakis - 12-02-2005 If you do decide to remove the motor assembly from the tape drive, note the connections to the speed sensor. I got them wrong and the
Not fatal (ji repsooled the tape), but still best avoided because **vp
Edited: 2 Dec 2005, 8:12 p.m.
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