HP 1200 Service Manual - Page 158

Service mode functions NVRAM initialization/cold reset NVRAM initializer sets all default variables stored in NVRAM back to factory default values or to a default ROM value, depending on the variable. It also performs a system reset. NVRAM initializer resets the following: ! all menu settings to factory default values ! factory settings such as formatter number, page counts, factory paper settings To perform NVRAM initialization 1 Turn the printer off. 2 Press and hold down the GO button. 3 Turn the printer on and continue to hold the GO button for at least 20 seconds. During this process, the GO button, Attention, and Ready LEDs will each turn on. 4 Release the GO button. 5 The printer LEDs will begin cycling. The NVRAM-unit process will run until the printer is in the ready state. PJL software commands To set the following NVRAM variables: Factory printer DEFAULT PAPER and copier/scanner factory default paper size will be set to the same value automatically. Factory printer DEFAULT LPARM:PCL SYMSET Factory DEFAULT OEM bit Factory DEFAULT PRINTPAGECOUNT Factory DEFAULT SCANPAGECOUNT Factory DEFAULT COPYPAGECOUNT Default Quick Copy paper size is also stored in scanner NVRAM but is changed only through the software or when set back to factory default with a NVRAMINIT. Only Quick Copy image type and contrast have a default value stored in NVRAM; they can only be changed through the software or by NVRAMINIT, which returns them to a ROM default value. 156 Chapter 6 - Troubleshooting EN