HP Color LaserJet Enterprise CP4020 Service Manual - Page 307
Component test details continued, Table 3-8
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Table 3-8 Component test details (continued) Component test Motor or solenoid number YELLOW LASER SCANNER M9 FUSER MOTOR M2 FUSER PRESSURE RELEASE MOTOR M2 reverse ALIENATION MOTOR M10 ITB CONTACT ALIENATION MOTOR M2 SL1 TCU MOTOR M12 TRAY 1 PICKUP SOLENOID SL3 TRAY 2 PICKUP MOTOR M13 TRAY 2 PICKUP SOLENOID SL4 TRAY 3 PICKUP MOTOR M2 TRAY 3 PICKUP SOLENOID SL1 TRAY 4 PICKUP MOTOR M2 TRAY 4 PICKUP SOLENOID SL2 TRAY 5 PICKUP MOTOR M2 TRAY 5 PICKUP SOLENOID DUPLEX PICKUP MOTOR SL3 M11: Duplex reverse motor Comments Activates the yellow/magenta scanner motor for 10 seconds. 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. Activates the solenoid for 10 seconds. Activates the pickup motor in reverse for 10 seconds. Activates the solenoid for 10 seconds. Activates the motor in the paper-feeder assembly and drives the separation roller for each tray in reverse. Activates the solenoid for 10 seconds. Activates the motor in the paper-feeder assembly and drives the separation roller for each tray in reverse. Activates the solenoid for 10 seconds. Activates the motor in the paper-feeder assembly and drives the separation roller for each tray in reverse. Activates the solenoid for 10 seconds. Activates the motor at a specified speed for 10 seconds. ENWW Tools for troubleshooting 275