4. M577 only: Press the diagnostics-access button. Repeatedly pressing the button cycles through the
available diagnostics.
Figure 2-24 Press the diagnostics-access button
5. A yellow screen appears (after the rst press of the button) indicating that the control-panel rmware is
version A (a magenta screen indicates version B rmware).
NOTE: If a dierent color appears on the screen, contact your global business unit (GBU) to determine
the rmware version.
TIP: After 4 seconds of inactivity, the diagnostic mode times out and is exited.
Figure 2-25 Control-panel version A yellow screen
6. Touch the screen to cycle the screen through the following:
●
A red screen.
ENWW Troubleshooting process 115
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