HP 9000 Series 300

Preventive Maintenance
The real-time clock contains a lithium battery which should be replaced once a year. The
real-time clock is located according to this chart:
Model Option Location
HP98561A
000
98561-66512
Processor Board
002
98561-66511 Processor Board
003
98561-66513 Processor Board
HP98561B All 98561-66530 Human Interface Card
Although the battery is available from Hewlett-Packard, it is usually can he obtained locally.
It is a 3V, 160mAH battery from these manufacturers:
Manufacturer Part Number
Panasonic
BR2325
WARNING
Battery may explode if mistreated. Do not recharge, disassemble or
dispose of in fire.
When changing the battery, relllember that the real-time clock will reset to its default state,
and it is necessary to set it to the current time. Note also that the battery retainer clip is a
conductor,
and merely lifting it up without changing the battery will still cause the real-ti~H'
clock to reset.
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