HP LaserJet Enterprise 500 Service Manual - Page 109

Service approach Before performing service ● Remove all media from the product. ● Turn off the power using the power switch. ● Unplug the power cable and interface cable or cables. ● Place the product on an ESD workstation or mat, or use an ESD strap (if one is available). If an ESD workstation, mat, or strap is not available, ground yourself by touching the sheet-metal chassis before touching an ESD sensitive part. ● Remove the print cartridges. See Print cartridges on page 76. ● Remove the tray cassette or cassettes. After performing service ● Plug in the power cable. ● Reinstall the print cartridges. ● Reinstall the tray cassette or cassettes. ● If the 1 x 500-sheet paper feeder was removed for service, place the product on the feeder. Engage the feeder tray locks to secure the feeder to the product. Post service test Perform the following test to verify that the repair or replacement was successful. Print-quality test 1. Verify that you have completed the necessary reassembly steps. 2. Make sure that the tray contains clean, unmarked paper. 3. Attach the power cord and interface cable or interface cables, and then turn on the product. 4. Verify that the expected startup sounds occur. 5. Print a configuration page, and then verify that the expected printing sounds occur. 6. Send a print job from the host computer, and then verify that the output meets expectations. 7. If necessary, restore any customer-specified settings. 8. Clean the outside of the product with a damp cloth. ENWW Service approach 73