HP LaserJet 8100 Service Manual - Page 147

Printer Service Mode The Service Mode should be used only by authorized service personnel. While in Service Mode, you can: q Verify and set the Page Count and serial number. These are displayed on the Configuration Page. q Set the Cold Reset Paper Size Default. (This sets the factory default paper size to either Letter or A4.) q Clear the Event Log. Initiate the Service Mode as follows: 1 Hold down SELECT and JOB CANCEL while powering on the printer, until all lights are illuminated and the Display is blank. (If the Display Panel reads INTERNAL TEST at this point, the keys were released too soon. Repeat this step until successful.) 2 Press MENU (on the right side of the toggle switch), then SELECT. The message SERVICE MODE is displayed briefly, then the printer automatically begins an INTERNAL TEST. After several seconds, both Control Panel Indicators turn off. (The printer may display WARMING UP if it has not warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. 3 Press MENU once to display SERVICE MENU. To exit the Service Mode press GO. Table 3-24. Service Mode Menu Items Service Mode Menu Items PAGES= Item Choices 0000000 Actions Required Displays total number of pages printed by the printer. Press + to step through values above cursor. Press SELECT to activate choice. Cursor will move to next digit. Printer will set new number into NVRAM after least significant digit is selected. Pressing MENU or ITEM before completing all digits will cancel the new setting. Pressing MENU returns printer to the main menu system. Pressing ITEM moves to the next menu item. C4265-90907 Printer Service Mode 141