Toubleshoot Power Problems

Last update - 7/15/2014

This section will help to isolate possible power problems in the DLC. It will not isolate any problems to any specific electronic components on the DLC card, but will help isolate fuse or battery pack or battery cell problems.

If you report power problems to CROPSCAN, Inc., please provide the voltage readings from each of steps 3, 5, 8, 9, 10, 11, and 12 below.

Equipment required: small phillips screwdriver and a voltmeter with a DC scale to about 20 volts.

The following steps assume that battery cells are installed in the battery pack as pictured below.

This concludes the test of the essential power related items.

Other Considerations / Operation:

The DLC normally powers-on (LED turns red) when the DLC receives a character from the CT100 or TERMINAL program running on a PC. If the DLC receives an Enter character as the second character within a couple seconds after the first character, it will set its serial baud rate based on that of the CT100 (300 baud) or TERMINAL program (9600 baud) or the baud rate of some other serial terminal (9600 baud maximum) and if the DLC receives an Enter character as the third character within a couple seconds after the second it will stay powered on and operate whatever program is loaded in the DLC, otherwise the DLC will go back to sleep.

So, the normal wake-up operation of the DLC is to have a terminal connected to the DLC and press the Enter key at approximately one second intervals at least three times. The first Enter key wakes the DLC, the second Enter allows the DLC to automatically determine the correct baud rate to use and the third Enter is for verification. If other than the Enter key is being pressed, the DLC will simply and automatically go back to sleep on the assumption that the character input may be coming from some other serial source or an operator not pressing the correct key (i.e. Enter key).

The DLC.BAS or MSR.BAS programs, running in the DLC can be configured to leave the DLC powered-on continuously (i.e. not automatically power-off), however the default setting is to automatically power-off after 255 seconds of operator inactivity (i.e. no keystrokes for 255 seconds). It may be possible, had there been an interruption of normal program execution or if you are running some program of your own in the DLC, for the DLC to stay powered-on continuously.

If the DLC.BAS or MSR.BAS program is loaded in the DLC and the DLC is not powering-off then press and release the Soft RESET button recessed in the back panel of the DLC. You will need a small pointed object, like a bent paper clip to reach through the small Soft RESET hole to activate the Soft RESET. If the DLC is operating properly, a Soft RESET will cause the DLC to go back to sleep (power-off and LED to go dark) within several seconds of pressing the Soft RESET.

If the DLC does NOT power-off after pressing the Soft RESET then you may try pressing the Hard RESET. The Hard RESET will cause the DLC's program and data memory to be erased and and the DLC will 'Beep' once to indicate that has happened. After the Beep, the DLC will be expecting to receive two Enter keys so it can establish the Terminal baud rate. After that, the DLC will send a prompt asking if Security should be enabled. Normally you would respond by typing N for No and press Enter. The DLC Main Menu would then appear. At this point, you would take option 10 to put the DLC to sleep and then Reload MSR Program and Configuration/Calibration.

If the DLC does not power-off after a Soft or Hard RESET or does not sound a Beep after a Hard RESET then the DLC is malfunctioning and should be returned to CROPSCAN, Inc. for diagnosis and repair.

CROPSCAN, Inc. Home Page

1932 Viola Heights Lane NE
Rochester, MN 55906 USA
Phone: (507)285-9230

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