HP Color LaserJet 8500 Service Manual - Page 385

Table 41. Numbered printer messages (continued) 59. MOTOR ERROR CYCLE POWER Description: Indicates that the main motor (M4) is not working properly. = Description: 0 = General error 1 = Startup error 2 = Rotation error 62. SERVICE CYCLE POWER Description: Indicates that a problem exists with the internal memory. = Description: 0 = Internal ROM or RAM 1-8 = DIMM slots 1-8 63 SERVICE CYCLE POWER Event log message: 59.00.0 Action: 1 Turn the printer off and on to reset the printer. 2 Reconnect connector J219 and relay connector J1 on the controller board. 3 Replace the main motor (M4). 4 Reconnect connectors J641 to J643 and J647 on the main relay PCA, connectors J671 and J673 on the subrelay PCA, connector J102 on the power supply, and connector J227 on the controller board. 5 Check electrical continuity between connector J641-1 (+24 VB) and J642-3 (PMP) on the main relay PCA when the door switch (SW641) is turned on. If there is no electrical continuity, replace the main relay PCA. 6 Check electrical continuity between connector J671-2 (PMP) and J671-2 (PFUPR) on the subrelay PCA when the door switch (SW671) is turned on. If there is no electrical continuity, replace the subrelay PCA. 7 Measure the voltage across connector J647B11 (+24 UH) and J647-4 (GND) on the main relay PCA after the printer is turned on. If the voltage is not 24 V, replace the main relay PCA. 8 Replace the controller board. Event log message: 62.00.0 Action: 1 Turn the printer off and on to reset the printer. 2 Perform DRAM DIMM test from the formatter diagnostics in the Service Menu. 3 If the problem persists, replace the bad DIMM. Event log message: 63.00.00 Description: Indicates that the internal RAM memory test failed. Action: 1 Turn the printer off and on to reset the printer. 2 Perform DRAM DIMM test from the formatter diagnostics in the Service Menu. 3 If the problem persists, replace the bad DIMM. EN Printer message troubleshooting 383