
Figure 17: Manual Override Jumper
Table 3: Default Values
Contrast 128
Backlight 255
Baud Rate 19.2 kbps
I
2
C Slave Address 0x50
Data Lock False
RS232AutoTransmitData True
NOTE The display module will revert back to the old settings once turned off, unless the
settings are saved.
3 Troubleshooting
3.1 The display does not turn on when power is applied.
• First, you will want to make sure that you are using the correct power connector. Standard floppy
drive power cables from your PC power supply may fit on the Power/Data Connector however they do
not have the correct pinout as can be seen in figure 9 on page 5. Matrix Orbital supplies power cable
adapters for connecting to a PC, which can be found in the Accessories Section on page 2.
Matrix Orbital GLK12232-25 12
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