TM 5-3805-296-23-1
0007
INTRODUCTION CONTINUED
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The machine performs a self-test of the Machine Monitoring System each time the start switch is set to the RUN
position.
During the Monitoring System self-test:
All alert indicators (Figure 1, Items 3, 5 and 10) FLASH for approximately one second.
Display area (Figure 1, Item 9) shows: unit indicators, "SERV CODE" indicator, symbol for service meter, and
"888.X.8.8" on the six digit display area.
The display modules are tested for approximately three seconds:
The alert indicators (Figure 1, Item 2) will turn ON.
Tachometer gauge (Figure 1, Item 4) and gauges (Figure 1, Item 1) jump to half scale. The gauges go to zero.
The gauges then go to full scale. After reaching full scale, the tachometer and the gauges return to the current
machine values.
The actual transmission gear readout (Figure 1, Item 6) turns on every segment of the readout. The readout
appears as a "0" with an "X" and a "+". There should be two of these symbols next to each other.
Ground speed readout (Figure 1, Item 7) turns on every segment of the readout. The readout appears as"188",
"MPH" and "km/h" are both turned ON.
The action lamp (Figure 1, Item 8) flashes ON.
The action alarm SOUNDS once.
Figure 1. Monitoring System.
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The main display module then goes into the normal mode of operation. The main display module can also scroll
through the modes if the Mode Select Switch is selected.
The module is operating properly if the main display module operates, as described.
There is a problem with the harness code or the module has failed if the main display module does not operate, as
described.