Phaser 4400 Laser Printer Service Manual 2-1Error Messages and CodesIntroductionThis section covers troubleshooting procedures for the Phaser 4400 Laser Printerísfront panel error messages. Only jams and fatal errors will produce an associatednumeric code. Error messages and codes are usually specific, making it important thatservice personnel and users record errors exactly when reporting problems with theprinter.Any error code associated with an error message or jam can be viewed by pressing theINFO key. Jam error are displayed at the beginning of the info menu, while engineerrors are display at the end.Some procedures require running Service Diagnostics tests to verify a specific printerassembly is operating correctly. Refer to Service Diagnostics on page 2-7.To troubleshoot problems not associated with a front panel error message or codesuch as ac power, or problems related to print-quality, refer to the sectionTroubleshooting on page 3-1.Section ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1Service Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Service Technician Cautionary Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Voltage Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4Using Fault History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Service Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7Entering Service Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7Service Diagnostics Menu Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8Using the Front Panel with Service Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . 2-9Engine Test Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10Engine NVRAM Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10Printer Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-11Index of Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11Error Message Summaries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Image Processor POST Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-58Fault Reporting Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
