Doc. # 5016
BM-185D/285D/286D
Rev. A
Operation and Service Manual
3.2 POWER-UP AND SELF-TESTS
The main power switch is located on the right side of the BM-185D/285D/286D.
When the system is turned on the computer performs a Power-On Self-Test (POST) which
checks and initializes the system hardware. At the end of this test, an audible 'beep' is sounded. If
the beep fails to sound during start-up, there may be a problem with audible alarms during
sample testing.
The operating system (Windows 2000) is then loaded from the hard disk. The program can be
run from the desktop shortcut, or directly from its location on the HDD. If the system fails to
power up correctly, try turning the power switch on the side of the controller module off for a
few seconds and then back on to re-initiate the tests.
Once the computer has successfully completed its tests and the program is executing, the system
will display the normal background collection screen. The detector windows should be gray, and
a pop-up window displaying the message "GETTING nn SECOND BACKGROUND" will
appear. The chronograph will show the remaining time of the count.
As soon as the background count is completed (the time is determined by the current entry in the
Set-Up Menu), the operator must log-on before any operations can be preformed. A scale tare is
recommended at this time. After the scale tare is complete, the blue "READY" window will
light, and the current background in counts per second will be displayed in black text on a blue
background. The detector windows are positioned graphically to indicate which detectors they
represent. If a background fault condition (either high or low) is detected the detector windows
will be displayed in black text on a magenta background. The errant detectors will display either
"**HI**" or "**LO**". The fault condition must be corrected before operation will be allowed.
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