HP L65500 manual Clean the temperature sensors

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The sensor is located between the second and third group of three pinches, in the middle of the platen.

TIP: You may need a ladder to reach the sensor.

TIP: Cleaning is easily done by reaching over the carriage beam in its low position. If you try to do it by putting your arms below the beam in its high position, you will find it more difficult to access the sensor and to check that it is clean.

1.Unload the substrate.

2.Wipe the sensor with one of the cotton swabs provided in the Cleaning Kit, slightly dampened with isopropyl alcohol, to remove dried ink. If the sensor window is heavily coated with dried ink, you may need to apply some pressure while wiping, helping the cotton to absorb the ink. Continue cleaning with fresh swabs until the cotton stays clean and the sensor window looks clean.

When reflecting ambient light, a clean sensor shows a blue-colored reflection that should extend uniformly across its whole surface. You can see this reflection by moving closer and slightly changing your angle of view.

3.Wait 3 or 4 minutes before reloading the substrate, so that the alcohol can evaporate completely.

Clean the temperature sensors

An alert is displayed when the temperature sensors need to be cleaned, which may be about every two months, depending on your use of the printer. When you see the alert, follow this procedure to clean the sensors.

1.Go to the front panel and select Clean temperature sensors from the Preventive Maintenance

menu . Press OK to continue.

2.Unload the substrate.

3.When the substrate has finished unloading, press an emergency stop button to turn off the mechanical and drying components of the printer. This is advisable for your own safety.

4.Wait until the dryers cool down.

CAUTION: In the following procedure you will be working close to surfaces that are hot during normal printer operation. Check that they are cool before proceeding.

5.Dampen a cotton swab with distilled water. Swabs are provided in the Cleaning Kit.

Hardware maintenance

ENWW	Clean the temperature sensors 19

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Contents HP Designjet L65500 Printer Trademarks Table of contents Software maintenance Front-panel error messages When you need help Enww General safety guidelines Safety precautionsFire hazard Label Explanation Identifies the main earth terminal Emergency stop buttons Check printer status Printer statusPrinter alerts Align the printheads Printer calibrationTroubleshoot printhead alignment Substrate-advance compensationColor calibration Color calibration Color profiles Ink restrictionsMaintain the ink cartridges Hardware maintenanceMaintain the printheads Maintain the substratesCheck the printheads Clean the carriage coverClean the carriage rails Hardware maintenance Clean the ink deposits Clean the exterior of the printer Clean the line sensor and aerosol inlets Clean the substrate edge holders Clean the main rollerClean the platen Clean the pinch wheelsClean the printheads Clean the substrate-advance sensorClean the temperature sensors Maintain the printhead primers Replace the carriage oiler foams Hardware maintenance Replace the line sensor box Replace the printhead cleaning roll Replace the printhead cleaning roll and aerosol filtersReplace the printhead cleaning roll and aerosol filters Replace the aerosol filters Move the printer Cleaning kit Printer maintenance kitsMaintain the HP Internal Print Server Software maintenanceUpdate the firmware Substrate cannot be loaded successfully Troubleshoot substrate issuesSubstrate has jammed Substrate is not attached to the input core Substrate sticks to the platen Ink is still wet when the substrate emergesThere are ink marks on the substrate General advice Troubleshoot print-quality issuesBanding Banding Colors are misaligned vertically Colors are misalignedColors are misaligned horizontally Print is grainySubstrate is not flat Print is smudgedEdges of objects are rough or blurred Colors look washed outColors are inaccurate Cannot insert an ink cartridge Troubleshoot ink cartridge and printhead issuesCannot insert a printhead Front panel recommends replacing or reseating a printheadPrinthead has overheated Incorrect printhead cleaning roll errorsPrinthead has damaged the substrate Printer does not print Troubleshoot other issuesPrinter seems slow HP Internal Print Server cannot detect the printerPrint job files have not been properly deleted Upgrade the HP Internal Print ServerColor calibration fails Front-panel errors Front-panel error messages2Numerical error codes Icon, then Carriage beam position Carriage system recovery Correctly inflated. The substrate will be unloaded Documentation When you need helpHP Proactive Support HP Customer CareHP Customer Care Centers Service information Preset creation flowchart Index Enww