IBM i 830 Repair Manual page 680

Remove and Replace Procedures
Refer to "Models 830 and SB2 with FC 9074 – Final Assembly, Front" on page 812
and perform the following steps.
4. From the rear of the unit remove the following:
5. Open the front cover. (See "Models 840/SB3 – Covers" on page 690.)
6. From the front of the system remove the following:
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iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
a. Remove the EMC access plate that is located directly above the PCI 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 PCI card enclosure in the frame.
d. Pull the PCI 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 PCI 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).
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.
b. Remove the operator panel by pulling on the blue handles that are located
on each side of the unit and sliding it partially out of the tower. Then,
unplug the cable from the rear of the control panel. (See "Models 830 and
SB2 with FC 9074 – Final Assembly, Front" on page 808.)
c. Unplug the control panel cable from the base DASD board assembly (DB3).
d. Remove the two retaining screws that are located inside of the removable
media enclosure (the top right and lower left corners).
e. Remove the removable media enclosure.
f. Remove the EMC access plates from the disk unit enclosures that are located
in front of the backplane (DB3). For location information, see "Locations —
Models 830, SB2 System Unit with FC 9074 Base I/O Tower" on page 709.
Press the surfaces of the two latching mechanisms together and tilt the top
of the cover away from the frame to remove it.
g. Record the disk unit locations and then remove them from the disk unit
enclosures that you just uncovered.
Attention: The disk units are sensitive to electrostatic discharge (see
"Appendix C. Working with Electrostatic Discharge-Sensitive Parts" on
page 955).
h. Remove the screws that hold the disk unit enclosures to the frame.