Diagnostic information 2-41
4060-xxx
990 Service Error displays
900 Error Code service check
FRU Action
1 Mechanical linkage
DC motor assembly
Check the DC motor cable connector to be sure it is correctly
installed at J2 on the control board. If correct, disconnect J2 from the
control board and check the resistance of the motor on the cable
connector. J2-1 to J2-2 measures between 115 and 135 ohms. Also
check J2-1 and J2-4 to the motor case for shorts. If either the
resistance is incorrect or a short is found, replace the mechanical
linkage/DC motor assembly.
Note: If the DC motor is shorted, it may also be necessary to replace
the control board.
2
Control board Disconnect the motor cable J2 from the control board and check the
voltages at J2 on the board.
Warning: Use caution not to short adjacent pins on the connector as
damage to the board could result.
If any of the voltages are incorrect, replace the control board. If
correct, replace the mechanical linkage/ DC motor assembly.
FRU Action
1 Printer POR Turn the printer off and on several times. If Error Code 900 continues
to display, go to step 2.
2
System board Make sure the system board is properly seated in connector J7 on
the interconnect board.
Turn the machine off and on several times, waiting a few minutes
between power on and power off.
If Error Code 900 continues to display, go to step 3.
3
Factory defaults Restore factory defaults. See “Restore EP Factory Defaults” on
page 3-18. This resets the non-critical areas of the user NVRAM. If
Error Code 900 continues to display, go to step 4.
4
Sub error codes With Error Code 900 displayed, press Select and Return. Record the
complete list of Sub Error Codes on the display. Check the “Base
printer sub error codes” on page 2-6. If none of the Sub Error
Codes are listed, then call your next level of support or call Lexmark.
Pin Measured (motor idle)
J2-1 +24 V dc
J2-2 +24 V dc
J2-5 +5 V dc
J2-6 +5 V dc
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