Table of Contents
Advertisement
UP
27130A
2. Verify that the Memory Configuration jumper is configured correctly for the EPROMs/RAMs
installed on the card. To verify that the jumper is configured correctly, determine what types of
EPROMs/RAMs are installed in sockets U64 and U74, then refer to table 2-1 to verify that the
correct jumpers are closed.
3. Install the card in the appropriate slot in the computer. Refer to the computer system in-
stallation manual to determine the correct slot. When installing the card, use c,are not to
damage components or traces on the card or on adjacent cards. Press the MUX card firmly into
place.
4. Connect the cable supplied with the card from J2 to the RS-232-C connection box.
If
you
have the test hood, which exercises more of the card's circuitry, and can be ordered
(Hewlett-Packard part number 0950-1659), connect it to J2 instead of connecting the cable.
START-UP
I
CAUTION
I
BE SURE AND INSTALL THE DIAGNOSTIC TEST
HOOD SO THAT ITS COMPONENT SIDE (THE SIDE
WITH THE LED) MATCHES THE COMPONENT SIDE
ON THE MUX CARD. DAMAGE TO THE MUX
CARD CAN RESULT IF THE COMPONENT SIDES OF
THE TWO DEVICES DO NOT MATCH.
To start up and verify correct operation of the MUX, perform the following:
1. Turn on computer system power.
2. A self -test is contained on the card. The host computer system determines if the self -test is
run automatically at power-on or must be invoked by the user.
Refer to the appropriate
manual for your system for a description of self -test initiation.
a.
If
the diagnostic test hood is not installed when the self -test executes, the LED located on the
card should light briefly and go out. This indicates that the card passed self-test.
If
the LED
does not light at all, the card is defective.
If
the LED stays on, the card did not pass self-
test. For either of these latter two cases, it is recommended that you return the card
to Hewlett-Packard; refer to the next paragraph for reshipment information.
If
you wish to
perform maintenance on the card, however, refer to Sections V, VI, and VII for maintenance in-
formation, replaceable parts lists, and schematic logic diagrams, respectively.
b.
If
the diagnostic test hood is installed
wh~n
the self-test executes, the conditions in step 2.a.
should occur, plus the LED located on the test hood should light briefly and go out.
If
the
LEOs (the one
moun~ed
on the card and the one on the diagnostic test hood) do not light at all,
or if they light and stay on, the causes are the same as in step 2.a.
3. Refer to your system documentation for information on using the MUX in your system.
2-13
Advertisement
Table of Contents
