Table 15. Basic troubleshooting (continued) # Verification steps Possible problems Solutions 2 Is the product ready? The control panel should function without error messages. Control panel displays an error. Consult the list of common messages later in this chapter to correct the error. Control panel is not functional. Verify that the control panel cable is seated into both the control panel and the scanner formatter. Also check the connections between the scanner formatter and the formatter. If all cables are undamaged and seated correctly but the problem persists, replace the control panel. Control panel display is blank, but the LEDs are lit. 1.
On units that allow for firmware recovery, recover the firmware using the recovery DIMM. 2. If the problem persists, replace the control panel. 3. If the problem persists, replace the scanner formatter PCA. 4. If the problem persists, replace the formatter. Control panel display and LEDs function, but keys do not work. Replace the control panel. 3 Do engine tests and self-tests print? Print an engine test, which is explained on page 200. The engine test should print without paper-feed problems or print-quality problems. Also print a configuration report (See “Internal reports” on page 209.). Note The formatter must be connected to perform an engine test.
Engine test is successful, but the configuration report does not print. Replace the formatter. Engine test is not successful. Replace the ECU. Control panel displays an error message. Consult the list of common messages in chapter 2 or the list of error messages in this chapter to correct the error. Media does not move smoothly through the printer paper path. Isolate printer paper-path problems by performing a paper-path check, which is discussed later in this chapter. Poor print quality. See “Solving image-quality problems” on page 188. EN Basic troubleshooting 175