To remove or replace the time of day battery:
1. Power off the system and unplug ac power cable. See Power on/off the system and logical partitions.
2. Remove the left side cover. See Model 820 - Covers.
3. Remove the cover (EMC shield) by pulling out on the two latches. The latches are located on each
side of the cover.
4. Remove the processor card. See Model 820 - Processor - M03.
5. Remove the memory card.
6. Replace the TOD battery by sliding the battery to the left and removing it from the system.
7. Reverse this procedure to install the new battery.
8. After installation is complete, IPL the system in Manual Mode.
9. Have the customer set the time and date.
This ends the procedure.
Model 825 remove and replace procedures
For use by authorized service providers.
Model 825 - Air moving device (AMD) - B01; B02 (concurrent)
Model 825 - Cards (concurrent)
Model 825 - Cards (dedicated)
Model 825 - Control panel - NB1
Model 825 - Covers
Model 825 - Device board - DB1
Model 825 - Device board - DB2, DB3, and DB4
Model 825 - Disk unit (concurrent)
Model 825 - Disk unit (dedicated)
Model 825 - HSL card - MB1 and MB2
Model 825 - Interlock switch
Model 825 - Memory - A through H
Model 825 - Power cable harness assembly
Model 825 - Power supply - P01 and P02
Model 825 - Removable media - D17 and D18
Model 825 - System unit backplane - CB1 and Power bus bar assembly
Model 825 - Time of day battery
Model 825 - Air moving device (AMD) - B01; B02 (concurrent)
For use by authorized service providers.
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