Replace roller rubber on HP 9825 tape drive

[Tony Duell]

> Be VERY carefull when disassembling the drive, do not remove the
> screws that hold the top (black) cover to the base of the tape

I had no problems doing this to the drives in my 9815 or 9825 (and I 
don't expect any problems doing it to the drives in my 9845). Yes, there 
are smoe small parts, but you should expect that ;-)

> drive, there are a couple of little parts (plastic balls, I think)
> that will run away. The first time I took an HP-85 apart, I spent
> a lot of time hunting these damn parts.
> 
> Anyway, you should be able to remove the capstan and motor assembly
> without taking the rest of the drive apart. You may need to unsolder
> the two little tachometer wires (but in some cases they are simply
> inserted into the PCB).

This is very different on the 9815/25/45/etc (as against the 85). The PCB 
is not fixed to the drive mechanism as in the 85, it's seprate with a 
cableform connecting it to the drive. I think you can remove the motor 
assembly without desoldering any wires, but I will have to check. 

-tony