HP Color LaserJet CM4730 Service Manual - Page 545

Table 6-2 Control-panel messages (continued) Control panel message Description Recommended action 3. Replace the 256 MB memory DIMM on the back side of the formatter. 4. Replace the flat cable from the formatter to connector CN101 in the scanner controller PCB. 5. Replace the formatter. 6. Replace the scanner controller PCB. 30.01.08 Carriage home-position error. The carriage did not pass the home-position sensor within the allotted amount of time. 1. Ensure that the customer is not pressing on the glass while copying. The can occur when someone places a book on the surface of the glass and presses on the ADF cover with more than 33 pounds of pressure. 2. If the error persists, replace the scanner flatbed unit assembly. The most common cause for this error is a loose belt. The belt cannot be accurately tensioned in the field, thus requiring the scanner flatbed unit to be replaced. 30.01.10 The ADF fan is not operating. This fan 1. operates only during the ADF scan process. Remove the ADF rear cover and watch the fan during a scan from the ADF. 2. Verify that the fan connection CN304 on the ADF intermediate PCB is firmly seated. 3. If the fan does not rotate, replace the ADF assembly. 30.01.15 The scanner initialization failed. 1. Verify that all covers are installed correctly and that the ADF and ADF jam cover are closed. 2. Check all sensors on the scanner to ensure they are not blocked. 3. Replace the scanner optical assembly. 4. If the error persists, replace the scanner flatbed assembly. 30.01.18 An error occurred on the scanner PCB. 1. Ensure all connectors on the scan control board are seated fully. 2. Ensure the MFP has at least version 26 of the scan control board firmware. 3. Replace the scan control board. 30.01.19 An error has occurred in the scanner lamp. 1. Test the lower lamp using the scanner test located in the Diagnostics menu. 2. Replace the scanner flatbed assembly. ENWW Control-panel messages 525