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1-16 General Information
6. Remove the Al5 controller assembly. Locate the battery on the
Al5 assembly. Figure l-8 shows the location of the battery.
Figure 1-8. Location of Battery on Al5 Controller Assembly
7. Replace the battery with a new one (HP part number 1420-0331).
Be sure to install the battery with the polarity shown in
Figure l-8.
8. Replace the Al5 controller assembly.
9. Reconnect the power cables to the IF and RF sections.
10. Connect a jumper wire between the Al5 controller test points
controller nonvolitile memory).
11. Set the LINE switch to ON. The Al5 controller LED's A15DSl
through A15DS14 should all turn on, then turn off, sequentially,
indicating the Al5 controller has sucessfully executed self-test. If
they do not, the Al5 controller might be damaged or improperly
installed. In addition, all front panel LED's should turn on
momentarily, indicating the HP 8566B has performed its power-on
pretest.
In addition to normal HP 8568B power-up HP-IB address and
firmware revision information, a BATTERY flag should appear on
the CRT, indicating that information previously stored in the Al5
controller nonvolitile memory has been lost or erased. Normally
the BATTERY flag appears after several years of use to indicate
that the lithium battery A15BTl needs to be replaced.
12. Remove the jumper wire between A15TPl-8 T3 and A15TPl-9 ST.
B a t t e r y (A15BTl)
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