Troubleshooting with the copy processor board The table in this section is a quick-reference source for troubleshooting common copy processor board (CPB) failures that might occur. The LED pattern column describes the status of the four LEDs located on the back of the MFP. The control panel display column lists the messages appearing on the control panel display when a failure occurs. The MFP functionality column describes what MFP functions are affected by the CPB failure. The action column lists the appropriate troubleshooting steps. To troubleshoot the CPB using the LEDs, verify which LEDs are illuminated and those that are not.
Check for messages appearing on the control panel display, and press OK . Match the LED pattern to the examples found in table 26 and perform the procedure found in the action column of the table. Note For information about CPB initialization LED patterns and their meanings, see “Copy processor board LEDs” in chapter 5. The print engine and scan engine have separate power supplies. The control panel is powered by the power supply in the print engine. The CPB is powered by the power supply in the scan engine. Hint The LEDs can be difficult to see through the holes (callout 1) in the CPB face-plate in a high-light environment.
It might be necessary to turn off some lights or remove the face-plate to properly troubleshoot the LEDs. 1 Figure 195. Copy processor board LEDs When troubleshooting the copy processor board LEDs, remember that the: Scan engine power supply is powered by the print engine power supply. Control panel is powered by the print engine power supply. CPB is powered by the scan engine power supply. C8523-90921 Troubleshooting with the copy processor board 203