DEVICE PROGRAMMING UNIT USER’S MANUAL | CHAPTER 5
46 MAINTENANCE
Troubleshooting
• When nothing shows on the display, try the following:
1. Press any key (the unit may be in low power mode)
2. Check the batteries
3. Check the power
• If the printer does not seem to work, turn off the
DPU, wait a few seconds, and then turn it back on
and try again.
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