Overview
A blank or black display panel appears on the operator panel and the GREEN LED light beside it is either ON or FLASHING.
Troubleshooting
| Steps | Actions |
| 1 | Power off the printer and allow it to sit powered off for ten to 20 seconds. |
| 2 | After ten seconds or more, power on the printer again. See whether the display panel powers on correctly. |
| 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.
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| 4 | Lightly touch the display panel and see whether it lights up. If the screen responds, it may just be in 'sleep' mode. Otherwise, proceed with the next step. |
| 5 | If the operator panel displays is completely blank and the Green LED on the front of the printer is still on. check to see whether the Main Fan is spinning from the rear of the printer.
Note: If the Main Fan is not running during power-up sequence, please see No power. If the Green LED is OFF running during power-up sequence, see proceed with the steps below.
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| 6 | If the Green LED on the front of the printer is still on and the Main Fan is spinning, this issue requires a service call. Please contact Lexmark Technical Support for other troubleshooting suggestions. |
Contacting Lexmark
Please contact Lexmark Technical Support if you need additional assistance.
NOTE: When calling for support, you will be asked for your machine/model type and serial number (SN). If you need help locating your printer's model type and serial number, How to Locate the Serial Number, TLI, Config ID, and Machine Type on a Lexmark CS310, CS410, CS510, CX310, CX410, and CX510.
Please call from near the printer in case the technician on the phone asks you to perform a task involving the printer.
LEGACY ID: SO7370
Overview
Ensure that the customer went through all of the customer-level checks before proceeding with the service. If issue persists after performing the steps mentioned above, try the following suggestions below.
Recommended Service Action
Before replacing any parts, the technician should do the following:
- Power cycle the device.
- Verify that there are no Green LED lights on or main fan running on the machine; if the fan is running or any lights are flashing, tap the touch screen.
- Plug the power cord directly into a wall outlet. Also verify that the printer is the correct voltage-type.
- Try another outlet or verify that other electronic items will power on from the suspect outlet.
- If the Main Fan is not running during boot up, see No power.
- If Main Fan is on during boot up, inspect the Operator panel connection at System card (JOPP1) for any obstructions. If the connections look okay, reseat or re-plug the cable at System card (JOPP1) and the other end of Operator panel, making sure it is seated properly on its connector.
- If issue occurs again, replace the Operator panel.
- If issue persists, replace the Operator panel cable.
Recommended Service Parts
If it appears that the printer will require service in order to fix the problem, replace or recommend the parts listed below. IMPORTANT! The part numbers listed are correct as of January 2013. Please confirm by checking the updated part number at Lexmark Parts Store whether they are still current before ordering.
Parts to send on first service call:
Part #: 40X7638 — Operator panel and display assembly (CS310) Part #: 40X7640 — Operator panel and display assembly (CS410) Part #: 40X7800 — Operator panel assembly (CX410) Part #: 40X7815 — Operator panel assembly (CX510)
Parts to send on second service call:
Part #: 40X7639 — Operator panel cable, CS310 Part #: 40X7641 — Operator panel cable, CS410/CS510 Part #: 40X7835 — UICC to controller card cable, CX310/CX410 Part #: 40X7837 — UICC to controller card cable, CX510
Part #: 40X7642 — Operator panel and display assembly (CS510) -
DO NOT recommend for first repair call
Part #: 40X7807 — Operator panel assembly (CX310) - DO NOT recommend for first repair call
NOTE: If the part numbers above do not work when ordering, please contact Lexmark Technical Support to get the current part numbers.
Additional information
If you have any questions or encounter problems when performing the steps above, please contact your next level of support or Lexmark Technical Support for any additional troubleshooting suggestions. Please be prepared to describe the problem you are experiencing, the error message on the display, and any troubleshooting steps you have already taken to find a solution. Please call from near the printer in case the technician on the phone asks you to perform a task involving the printer.
NOTE: If necessary, refer to the Service Manual for more detailed diagnostic information as well as for FRU removal procedures.
LEGACY ID: SO7370