HP LaserJet 4 Service Manual - Page 420

Setting the Page Count The page count is stored in the printer's Non-Volatile Memory (NVRAM). If it is necessary to replace the Formatter PCA, the page count should be reset to the printer's original page count to reflect the age of the print engine. Use the following procedure to set the page count: 1 Enter the Service Mode as described previously. 2 When SERVICE MODE is displayed, press the [Menu+] key to access the Service Menu. Press the [Item+] key to step through the menu. 3 PAGES=XXXXXX is displayed. XXXXXX represents the page count currently stored in the printer's NVRAM. The underlined character denotes the cursor position. 4 Press the [Value+] or Value- key to change the value of the selected digit. Holding down the key scrolls through the values for the digit at approximately 5 values per second. 5 Press the Select key to select the correct value. The cursor automatically advances to the next digit. 6 Set each digit in the same manner. When the last digit's value has been entered, the printer automatically returns to SERVICE MODE. 7 Press the [Go] key one more time to exit Service Mode. B-26 LaserJet 5/5M/5N Printer