Switches And Indicators - IBM 3278 Series Maintenance Information

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Light
1
Light 2
Light 3
Display upper/lowercase
Display uppercase characters (but store both)
Operating mode
Test
mode - displ.ys
test
panern
_{on
Off
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Audible Alarm Volume Control
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Econtr.stControl
Ready Symbol - first position of oper.tor _ _ _ _ _ _
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Security Keylock
On/Off Switch
information area:
BI
(3274).
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(3276),
or other symbol Brightness Control (Intensity Override)
Figure 4·1. Switches and Indicators
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