Lexmark Optra C Service Manual - Page 52

5045-001 Error (121/125) Laser Board Failure Note: A 125 error may occur due to temperature extremes and may be of a temporary nature. Check the error log. • If it is a one time occurrence, POR the printer to see if it resets. • If it has occurred multiple times, replace the laser FRU. FRU 1 Laser/scanner unit DC controller PCB Action Check the connections on the DC controller connectors J102, J110, and J111. Go to the "Horizontal Voids Service Check" on page 2-67. Check the connections on the laser driver PCB connectors J401 and J402. Check the connection on the PCB connector J451. Replace and check as follows: 1. Laser/scanner unit. 2. DC controller PCB, refer to "DC Controller Board Information" on page 2-2. Error (122) Laser Failure FRU 1 Laser/scanner unit DC controller PCB Action Check the DC controller PCB connectors J110 and J111. Check the connections on the laser driver PCB connectors J401 and J402. Replace and check as follows: 1. Laser/scanner unit. 2. DC controller PCB, see "DC Controller Board Information" on page 2-2. 2-20