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