4.2.2.12 General solution
Error LCD NOT DISPLAY
[Description] Engine is warming up properly but LCD does not display anything on.
[Wrong Part] 1. Main Controller
2. OPE
3. SMPS
[Check and Cause] 1. Check 24V on Main controller.
2. If 24V from Main controller is normal, Check the CCFL inverter harness on
OPE_Main.
3. If not, check the F 71 on SMPS.
[Solution]
1. 24V power and CCFL inverter harness connection are on normal, replace
OPE_Main rst and retry.
2. Keep on problem with 24V on, replace the Main controller.
3. Replace the SMPS.
Error LSU Error
[Description] LSU sync Error displays on LCD
[Wrong Part] 1. Drum Cartridge
2. Main Controller
3. Cover Open Connector
[Check and Cause] 1. Check LSU 5V/24VS
2. Main Controller LSU Part defect
3. Micro Switch Harness
[Solution] 1. Replace Drum Cartridge and retry
2. Replace Main Controller.
3. Replace Micro Switch Assy
Error Cover Open
[Description] The cover open massage displays on even when the print cover is closed.
[Wrong Part] 1. Hook Lever in the side cover / Micro Switch
[Check and Cause] 1. The Hook Lever in the top cover may be defective.
2. Check the CN8-4 on Main B°ØD and the micro switch on the rear side of set.
[Solution] 1. Replace the hook lever, if defective.
2. Check Cover Open harness. Replace Cover Open S/W
3. Replace the Main Control board.
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