Lexmark C782 Service Manual - Page 63
and 122.06 error code service check
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5061 122.05 and 122.06 error code service check Error codes 122.05 and 122.-6 indicate that the fuser didn't increase in temperature enough. Error code 122.05 may also indicate a problem in the fuser assembly with the hot roll bearings, hot roll thermistor, LVPS, or the system board. Step 1 2 3 Actions and questions Measure the voltage on connector J17-11 on the system board. The voltage measures approximately 0.13 V dc to 0.64 V dc as the hot roll lamp turns off and on. Is the voltage correct? Remove the fuser from the printer. Check continuity of the hot roll lamp by measuring between pins 1 and 2 on the AC fuser connector on the fuser assembly. Is there continuity? Check to make sure that the hot roll lamp is installed correctly. Is the hot roll lamp installed correctly? 4 Reinstall the fuser assembly. Watch to see if the lamps turn on and off as they heat up. Do the lamps turn on? 5 Turn the printer on, and allow it to reach a Ready prompt. Note: The printer may not complete POR and continues to display the error code. Remove the fuser assembly from the printer. Measure the voltage on connector J17-6 on the system board. The voltage should measure approximately +3.3 V dc. Is the voltage correct? 6 Measure the voltage on the fuser DC control connector on the LVPS. Measure the voltage on pin 6 of the connector. Does the voltage measure approximately +3.3 V dc? Yes Replace the fuser assembly. See "Fuser assembly removal" on page 4-44. Go to step 4 Go to step 4 Go to step 5 Go to step 6 Replace the fuser assembly. See "Fuser assembly removal" on page 4-44. No Go to step 2 Go to step 3 Install the lamp correctly. If this does not fix the problem, replace the fuser assembly. See "Fuser assembly removal" on page 4-44. Replace the LVPS assembly. See "LVPS assembly removal" on page 4-53. Replace the system board. See "System board removal" on page 4-89. Replace the LVPS assembly. See "LVPS assembly removal" on page 4-53. Diagnostic information 2-21