The

Operator Panel

display does

not

power on (light up) and goes blank and unresponsive.

Steps	Actions
1	The touch screen display may be in ' sleep ' mode. Lightly touch the display and see whether the display panel lights up.
2	If the display does not respond, press OK or the Copy button and see whether the printer attempts to lights up the display.
3	If the printer comes to the ' Ready ' state after powering it back on, use the operator panel on the printer to print one of the internal pages; i.e., a settings page or a demo page. Note: If the issue occurs again, proceed with the steps below.
4	If the printer does not respond, power off the printer. Allow the printer to sit powered off for ten to 20 seconds .
5	After ten seconds or more, power the printer on again. See whether the display panel powers on correctly. Note: Do not power the printer off and on too quickly. Doing so can cause a power issue with the display panel and create this type of issue.
6	Should powering the printer off and on not correct the issue, see whether the display is readable at all. Note: If the Green LED is OFF , see no-power-so7369.html#no-power_SO7369.
7	If the display is blank or completely unreadable, this issue requires a service call. Please contact Lexmark Technical Support for other troubleshooting suggestions.

If you require additional assistance, please close this window and locate

Get in Touch with Lexmark!

for contact information.

NOTE:

When calling for support, you will be asked for your

machine/model type

and

serial number

(

SN

). Should you need help locating your printer's

model type

and

serial number

, how-to-locate-the-serial-number-tli-config-id-and-.html#how-to-locate-the-serial-number-tli-config-id-and-machine-type-on_HO3870.

Please be near the products described in this article to expedite the support process and reduce callbacks.

LEGACY ID:

SO7371