HP 4550 Service Manual - Page 230

Table 7-3 Numerical printer error messages (continued) 40 EIO X DATA ERROR alternates with PRESS GO TO CONTINUE (4500) -or- 40 EIO BAD TRANSMISSION (4550) Description: A connection with the card in the specified slot has been broken. Action: 1. Check that all cables are connected to the EIO ports and that the EIO board is seated properly. 2. If possible, print to another network printer to verify the network is working properly. Note All data in the print buffer will be lost. 41.3 UNEXPECTED PAPER SIZE alternates with CHECK PAPER IN TRAY X (4500) -or- 41.3 UNEXPECTED PAPER SIZE alternates with LOAD TRAY X [TYPE][SIZE] (4550) Description: Action: A tray is configured for a specific paper size, but the Load the requested size media in tray. sheet loaded is a different size. This error often occurs when the printer is multifeeding. 41.5 UNEXPECTED PAPER TYPE alternates with CHECK PAPER IN TRAY X Description: Action: A tray is configured for a specific media type, but the 1. printer detects a different media type loaded. The most common cause for this error is a jam at registration plate (under the ITB) where the customer does not remove the paper. The engine 2. tries to check the OHT sensor and receives an error Verify that the correct media type is loaded in the input tray and the printer control panel is configured correctly. Clean the detection windows of OHT sensors 1 and 2 (see Figure 7-24). message. 49.ERROR XXXX CYCLE POWER Description: Action: Indicates that a firmware error occurred that caused 1. the processor on the formatter to abort operation. This type of error can be caused by invalid print 2. Turn the printer off and on to reset the printer. Verify that all cables are connected. commands, corrupt data, or invalid operations. In 3. some cases, electrical noise in the cable can corrupt data during transmission to the printer. Other causes include poor quality parallel cables, poor 4. connections, or home-grown applications. On rare Cancel all print jobs then resend. Try to isolate any offending print job. Delete the print job from the Windows spooler or from the print server. occasions, the formatter is at fault, which is usually 5. If the formatter pan assembly or DC controller indicated by a 79 Service Error. was removed, make sure the ribbon cable between the DC controller and the interconnect PCB is connected. Note See the diagram on page 229 for help with troubleshooting 49 errors Note The printer control panel will display 49 (FFFF) and the display will be dark if the ribbon cable is not connected. 6. To verify that the formatter is functioning properly, run the formatter tests available in the diagnostics mode (see page 300). If the formatter passes, the formatter is not defective. DO NOT replace the formatter. 228 Troubleshooting C7085-90921