[unix-pc.general] Hard Drive and paralle prineter connections on a UNIX 7300

thad@cup.portal.com (Thad P Floryan) (04/18/89)

Re: Kannan's troubles ...

Verify that all the large chips on the motherboard are firmly seated in their
sockets.  Same for the PAL chips (some are "hidden" towards the back of the
motherboard).

Also check the power supply voltages and that they ARE, in fact, getting to
the HD (the +12 just powers the motor).  I posted an article recently how to
check and adjust the voltages.  And be sure ALL the cables are securely
nestled in their connectors: the 20 and 34 wire ones from the HD, and the
power supply cable.

And, the battery is a Lithium cell about the size of a quarter.  It is located
near the LEDs at the left of the motherboard.  Stock, it's soldered.  I replace
them with sockets and have had no problem.  Be SURE to remove the jumper near
the battery before applying a soldering iron to it (or the socket to-be
attached) (and don't forget to re-insert the jumper when thru! :-)   It's
a standard lithium battery, costs around $1.

Thad Floryan [thad@cup.portal.com (OR) ..!sun!portal!cup.portal.com!thad]