Lexmark C520 Service Manual - Page 16

2. Diagnostic information 5022-xxx Start CAUTION Remove the power cord from the printer or wall outlet before you connect or disconnect any cable or electronic card or assembly for personal safety and to prevent damage to the printer. Use the handholds on the side of the printer. Make sure your fingers are not under the printer when you lift or set the printer down. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in this chapter to determine the corrective action necessary to repair a malfunctioning printer. They will lead you to solutions or service checks, including use of various tests. Symptom tables If your printer completes the "Power-on self test (POST) sequence" on page 2-5 without an error, and you have a symptom, go to "Symptom tables" on page 2-6. Locate your symptom, and take the appropriate action. Service errors (1xx.xx/9xx.xx) If a service error code appears while you are working on the printer, go to "Service error codes and paper jam messages" on page 2-7, and take the indicated action for that error. Service error codes are indicated by a three-digit error code followed by a period and additional numbers in the format XXX.YY. In most cases, five digits are shown. Paper jam messages (2xx.xx) User attendance messages that indicate a paper jam these have been included with the service error codes since repeated instances may indicate an underlying service issue. Go to "2xx paper jam messages" on page 2-8. User status and attendance messages • User status messages provide the user with information on the current status of the printer. • User attendance messages are indicated by a two-digit code that provides the user with information that explains a problem with a print cartridge, option, port, and so on. If a user error message displays, see "User status and attendance messages" on page 2-19 or "2xx paper jam messages" on page 2-8. Additional information • "Operator panel and menus" on page 2-2 • "Power-on self test (POST) sequence" on page 2-5 • "Theory of operation" on page 3-30 Diagnostic information 2-1