11. Reverse the above procedure to install the panel.
12. When a control panel with keystick is replaced, discard the new keysticks that come with the panel
and reuse the original keysticks.
Does the system that you are working on have a keystick lock?
v Yes: Continue with the next step.
v No: Go to step 15 (See page 82).
13. Do you have the original system unit keys and are you reusing them?
v No: Continue with the next step.
v Yes: Go to step 15 (See page 82).
14.
Perform the following:
Figure 1. System unit control panel with keystick (NB1)
a. Apply ac power.
b. Insert the new keystick into the control panel. The control panel will display 0000 5553.
c. Locate the push button that is on the back side of the control panel. It is located directly behind
the front side of the keystick position.
d. Depress the push button for 3-4 seconds.
e. The control panel will return to a function 01 display.
15.
After exchanging an item, go to Verify the repair.
This ends the procedure.
Disk unit, Models 830/SB2 and 840/SB3 (dedicated and concurrent)
For use by authorized service providers.
82 Hardware (Remove and Replace; Part Locations and Listings)
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