7.
Remove the cables from the rear of the DASD board assembly and note their
locations.
Note:
Both ends of the ribbon cables are marked “
LH
” or “
RH
” indicating that
one end of the cable is plugged in to either the left-hand (DB1) or
right-hand (DB2) DASD board assembly. The other end of the cable is
plugged in to either the left-most (LH) or right-most (RH) DASD
controller card (The cables will crisscross in the center of the tower).
8.
Remove the DASD board assembly.
9.
Install the DASD board assembly by reversing the removal procedure. After
exchanging an item, go to “Verifying the Repair” on page 920.
This ends the procedure.
FC 5074, FC 5079, FC 9079 – Device Board – DB3
1.
Power off the expansion tower (see “Powering On and Powering Off the
System and Logical Partitions” on page 922).
2.
Disconnect the power cord from the expansion tower.
3.
Open the rear cover. (See “FC 5074, FC 5079, FC 9079 – Covers” on page 623.)
4.
From the rear of the expansion tower
remove
the following:
a.
Remove the EMC access plate that is located directly above the tower card
enclosure. Press the surfaces of the two latching mechanisms together and
tilt the top of the cover away from the frame to remove it.
b.
Remove the cables from the disk unit controller cards (IOAs) that are
located inside the PCI card enclosure and note their locations.
Note:
Both ends of the ribbon cables are marked “
LH
” or “
RH
” indicating
that one end of the cable is plugged in to either the left-hand (DB1)
or right-hand (DB2) DASD board assembly. The other end of the
cable is plugged in to either the left-most (LH) or right-most (RH)
DASD controller card (The cables will crisscross in the center of the
tower).
c.
Remove the screws that hold the tower card enclosure in the frame.
d.
Pull the tower card enclosure partially out of the frame while lifting the
cables clear of the enclosure.
e.
Press the release mechanism that is located along the top right side of the
enclosure and carefully slide the enclosure towards you. Make sure that the
cables are clear of the enclosure.
f.
Remove the tower card enclosure from the frame.
g.
Remove the screws from the EMC access plate that is located inside the
frame and directly above the power distribution board.
h.
Remove the EMC access plate.
i.
Reach through the opening and remove the cables from the backside of the
base DASD board assembly (DB3).
5.
Open the front cover. (See “FC 5074, FC 5079, FC 9079 – Covers” on page 623.)
6.
From the front of the expansion tower
remove
the following:
a.
Note the removable media locations and then remove them by pulling out
on the handles which are located on each side of the unit.
Remove and Replace Procedures
626
iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
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Страница 897: ...Miscellaneous Chapter 5 Locations Addresses and Part Listings 883...
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