HP 3000 Series Installation And Service Manual page 53

Ma in te nance
f. Immediately discard the removed RAM chip, or mark it as
scrap, to avoid the possibility of its being inadvertently
reinstalled as a new replacement part.
NOTE
Bending the pins of the defective RAM
chip immediately upon removal is an
effective way of marking it as scrap.
g. Press a new RAM chip into the socket.
h. Re install the INP PCA board in the computer card cage, us ing
the procedure described under "Hardware Installation Proce-
dures" in Section II, Installation.
i . Verify that the INP is now working
un d e r " Ins ta 11a t ion Ve r if i ca t ion"
tion.
properly as described
in Section II, Installa-
5-18. Replacement of the peA Board
When the troubleshooting procedures outlined in paragraph 5-14
indicate the need for replacement of the INP PCA board, proceed
as follows:
a. Ensure that the system operator has backed up the sys tern
files before beginning this procedure.
b. Turn off the power.
On the HP 3000 Ser ies 30, set the POWER sw itch (loca ted on
the front of the HP 3000/30 mainframe, as shown in figure
2-2) to the OFF pos i tion.
On the HP 3000 Series 33, set the PROCESSOR switch (located
on the side panel beneath the desk-top of the HP 3000/33
mainframe, as shown in figure 2-3) to the OFF position.
I
CAUTION
I
All power must be off when inserting
or removing any device or card in the
system.
c. Disconnect the cable hood connector and the ribbon cable con-
nector from the edge of the INP PCA board.
5-12