Product Family Information The model HP C2021A is identical to the model HP C2001A from a hardware standpoint, as is the model HP C2039A to the model HP C2037A. The models HP C2021A and C2039A printers include the following features: • PostScript Level 2 SIMM • AppleTalk MIO Card • 4 MBytes of RAM In every instance the repair procedures for all products are similar. Some LaserJet 4 accessories are compatible with the LaserJet 4 Plus and some are not. The compatibility chart below may be used when there is a question of accessory compatibility.
Table 1-2 Product Family Compatibility Matrix *If HP LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is installed in the HP LaserJet 4, the printer will display a “53.1X.08 ERROR” (X indicates the position of the SIMMs slot). 1-2 Product Information Accessory Description Does it work in the HPLaserJet 4? Does it work in the HPLaserJet 4 Plus?
C2082A Envelope Feeder Yes No C2082B Envelope Feeder Yes Yes C2083A Optional 500 Sheet Feeder Assembly Yes No C2083D Optional 500 Sheet Feeder Assembly Yes Yes C2085A 250 Sheet Universal PC tray Yes No C2085D 250 Sheet Universal PC tray No Yes C3129A PostScript SIMM No Yes C2080A PostScript SIMM Yes No C2063A Memory (1 MByte) Yes Yes C2064A Memory (2 MByte) Yes Yes C2065A Memory (4 MByte) Yes Yes C2066A Memory (8 MByte) Yes Yes C3130A * Memory (1 MByte) No Yes C3131A * Memory (2 MByte) No Yes C3132A* Memory (4 MByte) No Yes C3133A* Memory (8 MByte) No Yes C3146A * Memory (16 MByte) No Yes C3157A Duplex Assembly No Yes 92298A Toner Cartridge Yes Yes