Infratec™ 1241 Grain Analyzer
Service Manual 1001 5015 / Rev. 4 4:13
PC Module System configuration verification
These routines check the current system configuration against the values stored in the
CMOS memory. If they do not match, the program outputs an error message. You
will then need to run the BIOS setup program to set the configuration information in
memory.
There are three situations in which you will need to change the CMOS settings:
1. You are starting your system for the first time
2. You have changed the hardware attached to your system
3. The CMOS memory has lost power and the configuration information has been
erased.
The PC-board memory has an external lithium battery backup for data retention.
Power-up beeper and DSP LEDs
When the instrument is powered-up, there is a beeper function to notify if a failure in
the instrument software start-up routine, or DSP software loading, has occurred:
•1 beep OK
• 2 beeps Could not open DSP device
• 3 beeps DSP communication failure
• 4 beeps LCD display enable failure (see Trouble Shooting scheme)
LEDs on the DSP
First the power (green) is lit. After some time the LED 1 is lit. The DSP software is
now running. When the DSP software is communicating the LED 4 is flashing rap
-
idly. At this state the display should be lit. For more information regarding the DSP
LEDs see Technical Description.
Communication
Communications between the instrument software and the DSP board are first
checked when the instrument is powered-up. Failure in the instrument software to
DSP communication is notified by a beeper signal, as described above. Then the I
2
C
communications from the DSP to each hardware module (Monochromator comm.,
Detector comm., Measuring Unit comm. and PSM comm.) are tested. The detector
temperature sensor and the ambient temperature sensor (placed on the hood) are also
tested and reported as “True” or “False”.
NOTE: The "1241xxxx" written on each line symbolise the serial
number of the instrument.
Line description including typical value Units
Min.
limit
Max.
limit
SelfTest/1241xxxx/Monoch./SerialNumber=String, T9010017
SelfTest/1241xxxx/Monoch./Comm=Bool, True bool
SelfTest/1241xxxx/Detector/SerialNumber=String, 00000015
SelfTest/1241xxxx/Detector/Comm=Bool, True bool
SelfTest/1241xxxx/TempSensor/ Comm=Bool, True bool
SelfTest/1241xxxx/MU/Comm=Bool, True bool
SelfTest/1241xxxx/PSM/Comm=Bool, True bool
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