Lexmark Optra M410, Руководство по обслуживанию

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Diagnostic Information
2-25
4045-XXX
Hot Fuser Service Check
Error codes 923 and 924 may display for a hot fuser failure.
CAUTION: The fuser may be hot, use caution before removing or
servicing.
Input Sensor Service Check
Service Tip: Run the Base Sensor Test. Check the input sensor for
proper operation. The display changes from open to closed as the
sensor flag is manually moved in and out of the sensor.
FRU Action
1 Fuser Thermistor Check for damage to the thermistor
assembly. Check the resistance of
the themistor:
HOT - 1K ohms
COLD =150K ohms to 475K ohms
With the cable connected, check the
continuity from J8-6 and J8-7 to
ground. If there is continuity, replace
the fuser thermistor.
2 Engine Board Error code 924 indicates the engine
board detects an open circuit in the
thermistor circuit for the fuser
assembly. The voltage on J8-6 on
the engine board measures
approxi5 V dc. If incorrect,
replace the engine board.
3 Fuser Hot Roll
Backup Roll Bearings Examine the fuser assembly for
signs of overheating or damage.
Check the hot roll and backup roll for
signs of excessive toner, label glue,
labels or other contaminants. If any
are found, repair as necessary or
replace the fuser assembly.