13 Mar
2005
13 Mar
'05
11:38 a.m.
Alarmed by this I went and had a closer look : yep,
not only was the
head ripped off, it is even nowhere to be seen. I had not yet inserted
a disk myself, due to the problematic latch.
Argh!. It happens. alas.
Since I dont have the head, repair is impossible. Would have been
problematic anyhow.
You'll never nanage to re-attach an 'down' head and get it aligned
properly. Not even with an alignment disk. You can swap the complete head
carriage assembly without too many problems.
You are supposed to do an alignemt if you replace the heads (obviously).
Perhaps I was lucky, but when I swapped a head assembly from a drive with
othe rfaults into the one with the ripped-off down head and put the CE
disk in, it was well within the alignment tolerance.
Any source for replacements ?
I doubt very much if Sony still sell heads for these drives. You'd be
better off looking for a complete drive with other faults (make sure the
down head has not been ripped off due to dried-up grease, that is by far
the most common problem).
These drives were used in a number of HP products at that time (9122,
9123, 9114A, 9133, etc)
Apart from the obvious mechanical issues, could a PC
DD drive be used
instead ?
Not witout a lot of modifications. The Sony drives rotate at 600 rpm
(twice the speed of PC drives), so the data rate is twice that of a
normal DD drive. You might be able to replace components round the disk
controller chip (as I said, HPCC can supply a schematic) and get it to
work, but it won't be trivial
Is there a builtin selftest for the printer ?
It's a nomal Thinkjet AFAIK. Which means there is a selftest got by
powering up with one of the buttons held down. But I forget just which one.
-tony