West Control Solutions MRC 7000 Controller Manual - Manual (Page 24)

24
FIGURE 3-1
LAMP TEST
From the Off or Control modes, all display and status LEDs can be illuminated simultaneously
by depressing the UP and DOWN keys at the same time. Any defective LEDs will not light.
CHANGE CHART (also see Changing Charts, Section 5.2)
If the UP and DOWN keys are held depressed for more than 2 seconds but less than 4
seconds, the display will show CChg momentarily. The pen(s) will move to and remain at a
point above the top graduation on the chart and the chart will stop rotating to allow the chart to
be changed. The pens will remain fully upscale with the chart OFF; otherwise, the unit will
continue to operate normally in the current mode. To restore pen(s) position and chart
rotation, press the UP and DOWN keys for more than 2 seconds, but less than 4 seconds.
PEN RESYNCHRONIZATION
To resynchronize the pen(s), depress the UP and DOWN keys for 4 seconds, the display will
show P dn momentarily, the pen(s) are driven to the "Pen Home" position below the bottom
graduation on the chart while the unit resynchronizes their position. After about 14 seconds,
the pen(s) will return to their correct position. All other functions of the unit's present mode
continue to operate normally.
Pen 2
AUTO/MAN
Key
Pen 1
AUTO/MAN
Key
SCROLL
Key
UP
Key
DOWN
Key