HP Color LaserJet Enterprise CM4540 Service Manual - Page 475

Each component test can be performed once or repeatedly. If you select Continuous from the dropdown menu as the repeat option, the test cycles the component on and off. This process continues for two minutes, and then the test terminates. NOTE: The front or side door interlocks must be defeated to run the component tests. Some tests may require that the ITB and print cartridges be removed. The control panel display prompts you to remove some or all cartridges during certain tests. 1. From the Home screen, scroll to and touch the Administration button. 2. Touch the Troubleshooting button, and then touch the Diagnostic Tests button. 3. Touch the Component Test button. 4. Select the component you want to test, and then touch the OK button. Table 3-6 Component test details Component test Motor or solenoid number Transfer Motors M1 M3 M4 M5 M6 Belt Only M1 Cartridge Motors M3: yellow M4: magenta M5: cyan M6: black Fuser Motor M2 Fuser Pressure Release Motor M2 reverse Alienation Motor M10 ITB Contact/Alienation TCU Motor M2 SL1 M12 Comments Activates four drum motors and the ITB motor (M1). Activates the ITB motor. Activates each drum motor sequentially (K, C, M, Y). Activate the fuser motor at a specified speed for 10 seconds. Reverses the fuser motor and pressurizes or depressurizes the fuser. Activates CMYK developer alienation in the following sequence: All colors engaged, all colors alienated, K-only engaged, and K alienated. Activates the fuser motor and primary transfer solenoid to cycle through the ITB alienation stages. Activates the motor at a specified speed for 10 seconds. ENWW Tools for troubleshooting 423