Disk The disk accessory is mounted on the rear of the Formatter PCA. The optional greater than 1 GB EIO-based hard drive is used for creating multiple original prints (mopies) and storing forms, fonts, and signatures. Local Talk I/O The printer implements AppleTalk networking protocol through LocalTalk hardware. The LocalTalk network cable (HP P/N 92215N) is connected through the EIO card. The LocalTalk hardware is an optional feature for the HP LaserJet 4000, 4000 T, and 4050 series printers. The LocalTalk hardware is bundled with the HP LaserJet 4000 N/TN printers. CPU The HP LaserJet 4000 series printer’s Formatter PCA incorporates a 100MHz RISC processor.
The HP LaserJet 4050 series printer’s Formatter PCA incorporates a 133MHz RISC processor. Printer Memory Note If the printer encounters difficulty managing available memory, a clearable warning message will be displayed on the Control Panel. Some printer messages are affected by the Auto Continue and Clearable Warning settings from the Configuration Menu in the printer’s Control Panel. If CLEARABLE WARNING=JOB is set on the Control Panel, warning messages display on the Control Panel until the end of the job from which they were generated. If CLEARABLE WARNING=ON is set, warning messages display on the Control Panel until [Go] is pressed.
If an error occurs that prevents printing and AUTO CONTINUE=ON is set, the printer goes offline for 10 seconds before it returns online. If AUTO CONTINUE=OFF is set, the message displays until [Go] is pressed. Read Only Memory (ROM) Besides storing microprocessor control programs, the ROM stores dot patterns of internal character sets (fonts). 5-18 Functional Information