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XRAY
POWER
OFF
ON
The button labels and switches on your panel might not match those shown in the figure. For
example, if your scanner does not include an X-ray sensor the scan control panel will not include
the X-ray button label and key switch.
The scan control (touch) panel switch decoder PCB receives row and column information from
the switch matrix panel on the scan control panel and converts it to signals used by the UPMP.
This PCB also has three MOSFET switches that are used to enable the Caliper, Strength, and Ash
sensors. Input power of 24 VDC generates +12 VDC and +5 VDC on the PCB. There are four
power supply test points. See Fig
Keyswitch to control X-ray sensor, disables power to
ash source , Enables power to ash source (after using
reset)
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