Fc 9094 - Time Of Day (Tod) Battery - IBM iSeries 270 Service Manual

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.
Note: 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.
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 procedure.
2. 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 replace procedure.
3. There is a power problem. One of the following is the problem:
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.

FC 9094 - Time of day (TOD) battery

For use by authorized service providers.
Use this procedure to remove or replace the time of day battery in an FC 9094.
CAUTION:
This product contains a lithium battery. To avoid possible explosion, do not burn, exchange, or
charge the battery. Discard the battery as instructed by local regulations for lithium batteries.
(RSFTC232)
To remove or replace the time of day battery:
1. Power off the FC 9094 expansion unit. See Power on/off the system and logical partitions.
2. Remove the power cord from the FC 9094 expansion unit. Note that dual line cord units have two
power cords.
3. Open the rear cover. See FC 5074, FC 5079, FC 5094, FC 5294, FC 9079, FC 9094 - Covers.
4. From the rear of the FC 9094 expansion unit perform the following:
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. Disconnect the cables from the top of the PCI cards and note their location.
Attention: All cards are sensitive to electrostatic discharge. See Work with electrostatic
discharge-sensitive parts.
c. While lifting the cables clear, pull the PCI card enclosure partially out to the release-mechanism
stop on the right side.
d. Remove the PCI cards on the right side of the enclosure that prevent access to the battery. See
FC 8094-001 (lower half), FC 9094 - Cards (dedicated). Note their locations.
5. Remove the TOD battery by using a flat object (such as a screwdriver) to pry it out.
6. Install the new TOD battery by reversing this procedure.
7. After installation is complete, IPL the system in manual mode.
8. Have the customer set the time and date.
This ends the procedure.
188
Hardware (Remove and Replace; Part Locations and Listings)