HP LaserJet 4v/mv Service Manual - Page 58

To perform a cold reset: 1 Turn off the printer. 2 While holding the [On Line] key down, turn the printer on. 08 COLD RESET appears briefly on the display, then 05 SELF TEST appears. After about 30 seconds, 08 COLD RESET reappears on the display, followed by 00 OFFLINE. The cold reset is complete. 3 Press [On Line] to return the printer on line. 00 READY appears on the display. Menu of Resets Additional reset options are available through the Menu of Resets. Use the Menu of Resets option with caution. It can result in loss of buffered page data or printer configuration data. You should only use it when: • You wish to restore the default printer settings. • Communication between the printer and computer is interrupted. • You are using both the parallel I/O and MIO ports, and one of the ports is having problems. To access the Menu of Resets: 1 Press [On Line] to take the printer off line. 2 Hold down both [Shift] and [Reset] for at least 10 seconds until RESET=MENU appears on the display. 3 Use [+] or [-] to cycle through the items. 4 Press [Enter] to select your choice of resets. An asterisk * appears by the reset option. 5 Press [On Line] to execute the reset. The following table shows the three reset options. Table 3-13 Menu of Resets Option Selected RESET=MENU RESET=ACTIVE I/O RESET=ALL I/O Printer Response 09 MENU RESET 09 RST ACTIVE I/O 09 RESET ALL I/O Explanation RESET=MENU performs a simple reset (see previous page) and restores most of the printer factory default settings. Items in the Config, Memory Configuration and Parallel Menus are not reset. RESET=ACTIVE I/O clears the input and output buffers for the active I/O only and performs a simple reset. RESET=ALL I/O clears the input and output buffers for all I/Os and performs a simple reset. 3-24 Operating Overview