HP 8550 Service Manual - Page 51
Control panel, Guide key-display context-sensitive help screens functions
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Control panel 12 32 123 125 127 2 124 126 128 82 42 62 52 72 120 122 92 121 220 129 Figure 9. Copy module control panel 1 System switch-switch between the copy module user interface and the print system screen; also use to exit Power Save mode 2 Status indicators: • copying-glows green to indicate that copying is under way • error-flashes orange to indicate the absence of media, media jam, or absence of toner; glows orange to indicate a fault • data-glows green to indicate that data is being output • error (after "options")-flashes orange to indicate a printer error, the absence of media, media jam, or absence of toner 3 Screen contrast dial-adjust the contrast of the liquid crystal display (LCD) (clockwise darkens the screen, counter-clockwise lightens the screen) 4 Reset key-return to standard copying mode; also use to back out of menus without making changes 5 Guide key-display context-sensitive help screens (functions, how to operate) 6 User mode key-start or end user mode, and check common settings, copy module settings, timer settings, adjust/clean settings, and counter readings 7 Interrupt key-make an interrupt copy EN Control panel 49