Hardware Installation
SCX 920 Installation Guide 29
3. If you are pressing RESET, the OVERRIDE light turns on while you
are pressing the button.
4. The CPU light begins flashing and flashes every .2 sec.
5. The TD light immediately starts flashing after you let go of the
button to show data is being transmitted.
6. The RD light begins flashing only if data is being received from
other controllers on the network. This may not happen immediately.
7. If any of the eight outputs is not set to AUTO, the overrides are
enabled and the OVERRIDE light remains steadily on.
8. If the CPU light flashes every .1 sec, it means the CPU has failed a
RAM or ROM test. See the Andover Controls Infinet Controller
Troubleshooting Guide.
9. The EXTERNAL +24V light turns on and remains steadily on.
When the EXTERNAL +24V light goes out, it means no power is
being supplied to the expansion port. You may have to replace the
fuse. See the Andover Controls Infinet Controller Troubleshooting
Guide.
10. The eight status lights on the front of the controller each correspond
to the output with the same number. They remain off until their
corresponding outputs are turned ON by the controller programs. If
no programs are running, the lights remain off. Pulsed outputs flash
on for the duration of the pulse and then go off.
Reset Button
The RESET button is the red square button just left of the vertical center
of the board near the bottom. You press it to initiate a warm start. The
same events occur for a warm start as for a cold start.
Adjusting the LCD View Angle
The LCD VIEW ANGLE adjustment screw is at the top in the center of
the board (see Figure 3). You turn the screw to adjust the angle of the
LCD on the front cabinet.
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