Models 830/Sb2 With Fc 9074 - System Unit Backplane (Mb1) - IBM iSeries 270 Service Manual

f. Remove the unit from the tower.
Notes:
v If you need to remove a tape from the old tape unit, see Tape cartridge - manual removal.
v If you need to remove optical media from a DVD-RAM unit, go to Optical media - manual
removal, and then continue with the next step of this procedure.
This ends the procedure.
To replace removable media (D41 and D42):
1. Select Device Concurrent Maintenance and enter the required information in the information fields.
Do not press the Enter key at this time.
2. Read the remaining steps of this procedure and ensure that you understand the procedure before
continuing.
3. Slide the unit partially into the tower. Ensure that the device does not contact the backplane at this
time.
4. Press Enter on the console. After the delay time, the light at the top right of the device will begin
flashing. You now have 9 seconds to push in firmly on the handles and push the unit completely into
the frame. The light at the top right of the device will go off and remain off for a few seconds when the
device contacts the backplane. Then it should go on and remain on.
Attention: If you install the device when the light is not flashing, data may be lost, the unit may be
damaged, or the backplane may be damaged.
Did the light on the device go on and remain on?
v No: Continue with the next step.
v Yes: After exchanging an item, go to Verify the repair.
This ends the replace procedure.
5. Attempt the device concurrent maintenance procedure again without physically moving the unit.
Did the light above the device go on and remain on?
v No: Continue with the next step.
v Yes: After exchanging an item, go to Verify the repair.
This ends the procedure.
6. There is a power problem. One of the following conditions exists:
v The new unit is defective.
v The backplane was damaged during the device concurrent maintenance procedure.
v There is a new problem with the power subsystem.
This ends the procedure.

Models 830/SB2 with FC 9074 - System unit backplane (MB1)

For use by authorized service providers.
Use this procedure to remove or replace the system unit backplane (MB1) on the Models 830 or SB2.
Attention: The processor cards in this system can only be attached to the backplane once. If a processor
card is removed, it must be replaced with a new processor card. For additional information, refer to Model
830/SB2 - Processor feature codes and CCINs.
To remove or replace the system unit backplane (MB1):
1. Power off the system. See Power on/off the system and logical partitions.
2. Open the rear cover and unplug the ac power cord from the FC 9074 base I/O tower.
3. Refer to Models 830 and SB2 with FC 9074 - Final assembly, rear, and continue with the following
steps.
4. Label and remove the cables from the rear of the processor/CEC cage assembly.
70
Hardware (Remove and Replace; Part Locations and Listings)