41356901TH Rev.2 148 /Appendix E DIAGNOSTICS TEST1. Maintenance Modes• The maintenance modes consist of the user maintenance mode which are released to the user, andthe system and engine maintenance modes in the maintenance personnel level not released to theuser.• Press the MENU key to update each category. The operation returns to the first category afterupdating the last category, in a loop.• Press the Enter key to execute the function being displayed.• To exit from any of these modes during a category display, press theRecover or ON LINE key andthe operation mode will start.1.1 User Maintenance Mode• To enter the user maintenance mode, turn the power on while keeping the MENU key pressed down.• This mode uses the menu for function selection.• The user maintenance mode provides the following functions:(1) Hex Dump• The data received from the host (higher position) is dumped in hexadecimal notation to theprinter.• Printing is activated automatically when the received data exceeds one page. If the receiveddata is less than one page, printing can be activated manually by pressing the FORM FEED keyafter desetting the off-line mode by pressing the ON LINE key (automatic activation of printingeven when the received data is less than one page is possible by selecting the Auto Ejectfunction on the menu).• The only way to exit from this mode is by turning the power off.(2) Menu Reset• All settings for Menu level-1 are reset to factory default values.The menus for all executable emulations, including options, are reset to factory defaultvalues.(See Table 4-1)• The operation mode starts automatically upon completion of resetting.(3) Drum Counter Reset• This function resets the drum life data when the user replaces the image drum unit.• The operation mode starts automatically upon completion of resetting.(4) X-Adjust / Y-Adjust• This function sets the first character printing position on the first line.• The operation mode starts automatically upon completion of resetting.