Lexmark Optra Color 1200, Service Manual

Page: 40 / 245

Diagnostic Information
2-1
5050-001
2. Diagnostic Information
The diagnostic information in this chapter leads you to the failing
part. Before you replace an entire assembly, determine if just the
defective part is available in the parts catalog. Use the error code
tables, symptom table, service checks and the diagnostic aids
chapter to determine the symptom and repair the failure. You may
find that the removal procedures in the Repair Information chapter
will help you identify parts. After you complete the repair, perform the
appropriate tests to verify the repair.
If an error is displayed, locate it in the following Service Error
Message Table, Status Messages Table, or Attendance Messages
Table and take the appropriate action.
If an error message appears while you are working on the printer, go
to the error message table and take the indicated action.
Part Numbers
Some of the message tables and service checks list the part number
of the part you are asked to replace.
Adjustments and Procedures Following Parts
Replacement
Whenever you replace any of the following parts be sure to perform
the required adjustments or procedures. The adjustments are in the
Repair Information and Diagnostic Aids chapters.
Printer Controller Board/Printer Control EEPROM (U107)
If you replace the printer controller board, remove EEPROM (U/107)
and install it on the new board. Also check the printhead adjustment.
If you change the EEPROM, the following items must be checked
and adjusted in the service mode.
•
LED Head Light Quantity
•
Belt Thermistor Rank
•
Margins (Top K and C)
•
Printhead Adjustments (X, Y, and Theta)