Omron NT20M Operation Manual page 17

Nomenclature and Functions
Bottom
Components under Drip-Proof Cover
NT20M-Dj121-V2
Contrast Control
Adjusts display contrast.
Turning clockwise increases contrast.
Note When adjusting the contrast,
use the screwdriver included
with the drip-proof cover.
Rear Panel
Lithium Battery Cover
The lithium battery is
under this cover.
The illustration below is for the NT20M-Dj121-V2. The NT20M-Dj13j is
basically similar except for the contrast control being in a slightly different
position.
Cover for 8-position DIP switch for system settings
Terminal block cover
(Refer to 2-5 Wiring and Connectors)
Extended I/O Unit Connector
(NT20M-DNjjj only)
Remove seal when connecting
a 12-key Function Key Unit.
Reset Switch
Pressing this switch initializes
the NT20M. The status of
screen data before initializa-
tion is retained.
Peripheral Device Connector
Used to transfer screen data
between the Support Tool and
the NT20M.
Slide switch for memory
settings (SW2)
Socket with lever, for installing
image data memory
Socket for mounting System ROM
(NT20M-SMRjj)
Connector for Host Interface Unit
Section 1-7
9