HP 4600 Service Manual - Page 337

Table 7-5 Numerical printer messages (HP Color LaserJet 4610n and 4650 models) (continued) Message Description Action 53.XY.ZZ CHECK RAM DIMM SLOT alternates with An error occurred in some printer memory. X DIMM Type NOTE The HP Color LaserJet 4610n printer has only one DIMM slot. To continue press Stop 1 Slot 1 2 Slot 2 Y Device Location 1 DDR Slot 1 2 DDR Slot 2 ZZ Error Number 0 unsupported memory 1 Turn the printer off. 2 Verify that the memory meets specifications and is correctly installed. 3 Turn the printer on. 4 If the problem persists, replace the DDR card in the slot indicated. 1 unrecognized memory 2 unsupported memory size 3 failed RAM test 4 exceeded maximum RAM size 5 invalid DDR speed 54.X PRINTER ERROR X Description 1 low fuser temperature 3 Dmax density sensor 5 CPR sensor Turn the printer off and then on, and then check the following items in the order listed. 54.1 error: Check the fuser. See 50.X fuser error. 6 OHT sensor 7 yellow drum phase (home) position sensor 54.3 error: Check the connections. Replace the color registration detection assembly. 8 magenta drum phase (home) position sensor 9 cyan drum phase (home) position sensor 10 black drum phase (home) position sensor 54.5 error: Check the connections. Replace the color registration detection assembly. 54.6 error: Check the connections. Replace the paper pickup unit. 11 yellow density sensor 12 magenta density sensor 13 cyan density sensor 14 black density sensor 15 yellow CPR sensor 16 magenta CPR sensor 54.7, 54.8, 54.9, or 54.10 error: Check the connections. Replace the drum-phase sensor for the indicated color. 54.11, 54.12, 54.13, or 54.14 error: Check the connections. Check the cartridge and replace it if ENWW Printer-error troubleshooting 321