Infratec™ 1241 Grain Analyzer
4:12 Service Manual 1001 5015 / Rev. 4
4.3 Quality Control
4.3.1 Self-test
Fig. 4:4 Self-test sub-menus
When the instrument is powered-up or when manually chosen, a Self-test is execut-
ed. The different tests take place in the order as they are specified in this section.
Screen Display
The PC-board is not capable to send screen display to both LCD and CRT. The de-
fault screen mode is LCD.
The LCD backlight is intentionally disabled at boot-up. It is enabled at the end of the
DSP initialization where the PSU initialization activates the IIB..
For troubleshooting purpose you can bypass the disabled backlight buy short-
circuiting the jumper JP3 on the Display Interconnection Board.
PC Board System Test and Initialization
These routines test and initialize PC board hardware. If the routines encounter an er-
ror during the tests, you will either hear a few short beeps or see an error message on
the screen. There are two kinds of errors: fatal and non-fatal. The system can usually
continue the boot up sequence with non-fatal errors. Non-fatal error messages usual
-
ly appear on the screen along with the following instructions:
Press <F1> to RESUME
Write down the message and press the F1 key to continue the boot up sequence.
7 Settings
1 Default Settings Resets the instrument to its
default settings
2 Scan Mode
(Standard)
8 Read Disk Read contents of USB stick
and install possible options
e.g. AM-s or programs
Level 1 Level 2 Level 3 Level 4 Comments
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