HP Color LaserJet 5500 Service Manual - Page 468

Service ID This item allows the date that the printer was first used to be shown through the control panel, eliminating the need for customers to keep paper receipts for proof of warranty. Because the printer does not have an internal clock, the service ID date's availability is dependent on the printer being connected to a source that can provide the date, such as the installer, the driver, or the embedded Web server. In cases where the printer is not connected to a date source, the service ID will not be available, and the control panel will display 000000. Restoring the Service ID If you replace the formatter, the date is lost. Use this menu item to reset the date to the original date the printer was first used. The date format is YYDDD. Calculate the date as follows: 1. To calculate YY, subtract 1990 from the calendar year. 2. To calculate the DDD, use the following formula: 30 * (calendar month - 1) + calendar day = DDD Example for restoring the Service ID Example using the Service ID 14262, the date conversion is as follows: Example actual date = September 22, 2004 or (9-22-04) 1. 2004 - 1990 = 14 YY = 14 2. 30 * (9-1) + 22 = DDD 30 * (8) + 22 = DDD 240 + 22 = DDD 262 = DDD Converting the Service ID to an actual date You can use the printer Service ID number to determine whether the printer is still under warranty. The Service ID is formatted as a five-digit number. The first two digits represent the year (YY), and the remaining three digits represent the date (DDD). Convert the Service ID into the installation date as follows: Service ID = 14262, where 14 = YY and 262 = DD 1. Add 1990 to YY to determine the actual year that the printer was installed. 2. Divide DDD by 30 and add 1 to the quotient if there is a remainder. 3. The remainder from step 2 is the day of the month. If there is no remainder, the day of the month = 30. Example for converting the Service ID to a date 1. 1990 + 14 = 2004 446 Chapter 7 Troubleshooting ENWW