HP Color LaserJet CM4730 Service Manual - Page 544
Control panel message, Description, Recommended action, or whenever the scanner flatbed motor is
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Table 6-2 Control-panel messages (continued) Control panel message Description Recommended action 30.01.01 The flatbed scanner cover is open. This is a 1. Ensure the flatbed cover is closed. status message only. 2. If the message persists, check that the scanner-open sensor at the left-rear of the scanner moves up and down correctly. If not, replace the scanneropen-sensor holder assembly. 3. Replace the scanner-open sensor. 30.01.02 A paper jam has occurred in the ADF paper 1. Open the scanner jam-release cover path. and check all areas for jammed paper or labels that might be blocking a sensor. 2. Check that the mylar strip and holder are installed correctly. 3. Use the ADF sensor tests to ensure the ADF paper-present and ADF topof-page sensor flags move freely and the sensors are working properly. 4. If the jams persist, reseat the ADF pickup roller assembly. 5. Replace the ADF assembly. 30.01.03 The ADF could not pick up the paper. If the 1. Check that the ADF jam-access door paper does not pass the paper-presence is fully seated. sensor, it will be reported as an ADF paper- pick error. 2. Check the movement of the ADF driver gear on the ADF jam-access door to make sure it engages with the ADF input motor. A grinding noise can sometimes be heard when the paper is initially picked; this indicates the gear is not fully seated against the motor. In this case, replace the ADF pickup gear. 30.01.06 The scanner fan, located at the base of the scanner assembly, has failed. It operates whenever the scanner lamp is illuminated or whenever the scanner flatbed motor is rotating. The fan also operates during the MFP initialization sequence. 1. During the MFP initialization sequence, listen to the fan to determine if it is operating. 2. Verify that the connector CN108 on the scanner controller PCB is firmly seated. Also make sure that the connection for the fan in the base of the scanner assembly is firmly seated. 3. If all the connections are secure but the fan is not operating, replace the fan. 4. If the error persists, replace the scan control board. 30.01.07 A communication error has occurred in the 1. Reseat the 256 MB memory DIMM on scanner. the back side of the formatter. 2. Reseat the flat cable from the formatter to connector CN101 on the scanner controller PCB. 524 Chapter 6 Problem solving ENWW