22 Jan
2010
22 Jan
'10
1:25 p.m.
I'm trying to repair a HP260/30 which fails self-test at step 9 (HP-IB
Programmed I/O test). It seems that the HP-IB interface card is the cause.
There's a 1TL1-0001 HP-IB controller IC and I'd like to know if it could
be replaced with a 1TL1-0006. The other ICs are all standard TTL (apart
from the 74F403 FIFO memories and the HP-IB bus
drivers).
I know I've seen a pinout of the 1TL1 IC somewhere, but can't
remember
where...
Christian
22 Jan
22 Jan
1:50 p.m.
Christian,
You should try the service manuals of the HP 1000F series interface cards.
You need the service manual of the HP-IB cards.
http://www.hpmuseum.net/exhibit.php?hwdoc=662
http://www.hpmuseum.net/display_item.php?hw=522
-Rik
-----Oorspronkelijk bericht-----
Van: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] Namens Christian Corti
Verzonden: vrijdag 22 januari 2010 14:25
Aan: cctalk at classiccmp.org
Onderwerp: HP-IB Medusa chip
I'm trying to repair a HP260/30 which fails self-test at step
9 (HP-IB Programmed I/O test). It seems that the HP-IB
interface card is the cause.
There's a 1TL1-0001 HP-IB controller IC and I'd like to know
if it could be replaced with a 1TL1-0006. The other ICs are
all standard TTL (apart from the 74F403 FIFO memories and the
HP-IB bus drivers).
I know I've seen a pinout of the 1TL1 IC somewhere, but can't
remember where...
Christian
6:13 p.m.
On Fri, 22 Jan 2010, Rik Bos wrote:
You should try the service manuals of the HP 1000F
series interface cards.
Hmm, I've never seen a 1TL1 on any of the HP1000/MEF series HP-IB boards,
neither on the "Bus Interface" cards, nor on the "Disk Interface"
cards.
Oh, that's an A-series card..., thanks for the pointer.
(But I really dislike hpmuseum's scans, they are barely readable)
Christian
8:15 p.m.
-----Oorspronkelijk bericht-----
Van: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] Namens Christian Corti
Verzonden: vrijdag 22 januari 2010 19:14
Aan: General Discussion: On-Topic and Off-Topic Posts
Onderwerp: RE: HP-IB Medusa chip
On Fri, 22 Jan 2010, Rik Bos wrote:
Sorry I ment L /A-series the L series share some interface cards with the
a-series.
It was a quick answer to set you on the right way.
About the scan it's better then nothing, and Jon is doing his best.
-Rik
You should try the service manuals of the HP
1000F series
interface cards.
Hmm, I've never seen a 1TL1 on any of the HP1000/MEF series
HP-IB boards, neither on the "Bus Interface" cards, nor on
the "Disk Interface" cards.
Oh, that's an A-series card..., thanks for the pointer.
(But I really dislike hpmuseum's scans, they are barely readable)
Christian 
8:33 p.m.
I'm trying to repair a HP260/30 which fails self-test at step 9 (HP-IB
Programmed I/O test). It seems that the HP-IB interface card is the cause.
There's a 1TL1-0001 HP-IB controller IC and I'd like to know if it could
be replaced with a 1TL1-0006. The other ICs are all standard TTL (apart
From what I rememnber, they are very similar devices...
Somethign is
telling me that the -0001 needs a 'strange' supply voltage or
bias
signal, or something like that, the -0006 doesn't. Wether the pin on the
latter chip is a no-connect I don't know.
The HP98265 high=speed HPIB card for DIO machines uses one version of the
Medusa, if you can track down the manual for that it might give you some
help. I should be able to dig out a pinout for it if that's any help.
-tony
9:24 p.m.
-----Oorspronkelijk bericht-----
Van: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] Namens Tony Duell
Verzonden: vrijdag 22 januari 2010 21:33
Aan: cctalk at classiccmp.org
Onderwerp: Re: HP-IB Medusa chip
I'm not sure but I think the first versions of the medusa were SOS chips,
(Silicon on Saphire).
I know the 1000 L versions and the 500 series used SOS chips, I'm not sure
for the HP 260's.
-Rik
I'm trying to repair a HP260/30 which fails self-test at
step 9 (HP-IB
Programmed I/O test). It seems that the HP-IB
interface
card is the cause.
There's a 1TL1-0001 HP-IB controller IC and
I'd like to know if it
could be replaced with a 1TL1-0006. The other ICs are all
standard TTL
(apart
From what I rememnber, they are very similar
devices... Somethign is
telling me that the -0001 needs a 'strange' supply
voltage or
bias signal, or something like that, the -0006 doesn't.
Wether the pin on the latter chip is a no-connect I don't know.
The HP98265 high=speed HPIB card for DIO machines uses one
version of the Medusa, if you can track down the manual for
that it might give you some help. I should be able to dig out
a pinout for it if that's any help.
-tony
5525
days inactive
5525
days old
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