Lexmark C780 Service Manual - Page 66
error code service check, Fuser hot roll is under temperature during standby, Cold fuser
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5061 122.11 error code service check Fuser hot roll is under temperature during standby Step 1 2 Actions and questions Turn the printer on, and allow it to reach a Ready prompt. Note: The printer may not complete POR and continue to display the 122.11 Error message. 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? 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 Go to step 2 Replace the fuser assembly. See "Fuser assembly removal" on page 4-44. No Replace the system board. See "System board removal" on page 4-89. Replace the LVPS assembly. See "LVPS assembly removal" on page 4-53. 122.12 error code service check Cold fuser If error code 122.08 displays, the printer has detected a problem in the fuser hot roll lamp circuity, fuser hot roll thermistor, system board, or LVPS fuser control circuits. Replace the following FRUs in the order shown: 1. Fuser assembly. See "Fuser assembly removal" on page 4-44. 2. LVPS assembly. See "LVPS assembly removal" on page 4-53. 3. System board. See "System board removal" on page 4-89. 122.13 error code service check Secondary hot roll thermistor circuit is open If error code 122.13 displays the printer detects a problem in the fuser secondary hot roll, fuser hot roll thermistor, system board, or LVPS fuser control circuits. Step 1 2 Actions and questions Turn the printer on, and allow it to reach Ready. Note: The printer may not complete POR and post a 122.13 Error message. Measure the voltage on connector J17-7 on the system board. The voltage should measure approximately +3.3 V dc. Is the voltage correct? Measure the voltage on the fuser DC control connector on the LVPS. Measure the voltage on pin 7 of the connector. Is the voltage measure approximately +3.3 V dc. Yes Go to step 2 Replace the fuser assembly. See "Fuser assembly removal" on page 4-44. No Replace the system board. See "System board removal" on page 4-89. Replace the LVPS assembly. See "LVPS assembly removal" on page 4-53. 2-24 Service Manual