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5.
Make sure that the formatter is seated and operating correctly. Turn off the product and remove
the formatter. Reinstall the formatter, and then verify that the heartbeat LED is blinking.
6.
Remove any external accessories or devices, and then try to turn the product on again.
NOTE:
If the control-panel display is blank, but the main cooling fan runs briefly after the product
power is turned on, try printing an engine-test page to determine whether the problem is with the
control-panel display, formatter, or other product assemblies.
Control-panel checks
The product includes a diagnostic test mode for the control panel. This mode allows you to troubleshoot
issues with the touchscreen, speaker, and
TIP:
To diagnose control-panel problems, see
NOTE:
Some of the diagnostic tests are for factory use only.
Open diagnostic mode
1.
Tilt the control panel forward. On the back side of the control panel, use a paperclip to press the
button inside the small hole near the center of the control panel.
2.
Repeatedly pressing the button will scroll through additional screens on the control-panel display.
Continue to press the button to scroll back to the diagnostic-mode main test screen.
Exit diagnostic mode
Do one of the following:
Touch the Stop
●
Wait 20 seconds and the control panel will return to the Home screen.
●
124
Chapter 2 Solve problems
Home
button.
Exits a test
Selects test settings
button.
Control-panel diagnostic flowcharts on page
126.
ENWW
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Table of Contents
Troubleshooting
