HP 2420 Service Manual - Page 205
A or 59.4 EP Motor failure, Reseat the firmware DIMM,
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Table 7-8. Interpreting control-panel messages (continued) Control panel message Event Description log error message Recommended action 59.XY ERROR For help press alternates with To continue turn off then on A printer-motor error has occurred. 59.00, 59.10, 59.20 Motor failure X Description 0 main-motor error 1 motor startup error 1. Turn the printer off, and then turn the printer on again. 2. Reconnect the main-motor wire-harness on the ECU 2 motor rotation error 4 EP-motor error Y Description Y = 0 3. Replace the gear assembly (see Gear assembly. 4. Replace the ECU (see ECU). 59.A or 59.4 EP Motor failure 1. Turn the printer off, and then turn the printer on again. 2. Reconnect the EP-motor wireharness on the ECU. 3. Replace the gear assembly (see Gear assembly. 4. Replace the ECU (see ECU). 62 NO SYSTEM alternates with To continue turn off then on This message indicates that no system was found. The printer firmware system is corrupt. 1. Turn the printer off, and then turn the printer on again. 2. Reseat the firmware DIMM, in slot J1. 3. Replace the firmware DIMM. 4. Replace the formatter (see Formatter). 64 ERROR alternates with To continue turn off then on A temporary printing error occurred in the scan buffer. 1. Turn the printer off, and then turn the printer on again. 2. If the message persists, replace the formatter (see Formatter). ENWW Understanding printer messages 191