Code :

Code: W18 ... W21
Description: Fuse Cut Error In [C][M][Y][K] Imaging Unit The in-use fuse for the indicated Imaging Unit remains intact. Code W18: Fuse Cut Error in Cyan Imaging Unit Code W19: Fuse Cut Error in Magenta Imaging Unit Code W20: Fuse Cut Error in Yellow Imaging Unit Code W21: Fuse Cut Error in Black Imaging Unit
Causes: • [C][M][Y][K] Imaging Unit, PL1.1.23 • I/U Sensor Board, PL5.1.21
Remedy: 1 Check the affected Imaging Unit contacts for evidence of fault or damage: Is there any damage, debris or corrosion? Replace the damaged parts. Go to Step 2. 2 Test the Imaging Unit fuse. Run the Service Diagnostics Read Fuse test on the affected Imaging Unit. Is the Fuse Cut? Replace the Engine Control Board. Go to Step 3. 3 Replace the affected Imaging Unit. Does the error persist? Go to Step 4. Complete. 4 Check the CTG0 harness continuity. Disconnect CTG1 from the Imaging Unit Sensor Board and CTG0 from the Engine Control Board. Is the harness conductive? Replace the I/U Sensor Board. Replace the harness.