HP CP6015dn Service Manual - Page 440

Table 7-4 Control-panel messages (continued) Control panel message Description Recommended action 3. Make sure that the sensor is securely fastened to the plate. 4. Check the wiring at the sensor. 5. If the error persists, replace sensor PI7 and the positioning-plate assembly together. 6. Only if the error persists and the previous steps fail to correct the problem, replace the stacker controller PCA. See Stacker controller PCA on page 737. 66.12.42 Finisher error: folding-guide motor (M3) Control panel diagnostics: M3 guide motor The guide motor (M3), located in the booklet- 1. making area of the finisher, controls the position of the guide plate. The guide plate is positioned in front of the folding rollers as the paper stack is being stapled, allowing the 2. bottom edge of the paper to smoothly pass by the folding rollers. When the stacked paper is lowered to the folding position, the guide 3. motor (M3) lowers the guide plate out of the way to allow the paper stack to be pushed into 4. the folding rollers. 5. Error occurs when The guide-home-position sensor (PI13) does not turn on when the guide motor (M3) has been driven for 700 pulses. 6. Also occurs when the guide-home-position sensor (PI13) does not turn off when the guide motor (M3) has been driven for 50 pulses. Carefully clean the sensor body by gently blowing clean air across the sensor to remove dust and debris. Make sure that the sensor is securely fastened to the plate. Check the wiring at the sensor. Check sensor PI13 for damage. Check the guide, gears, and gear tracks on the front and rear frame for damage. Replace components as necessary. If the error persists, replace the guide motor M3 and the guide home position sensor PI13 together. 66.12.43 Finisher error: paper-fold motor (M2) M2: paper-fold motor, located in the booklet making area of the finisher, drives the rotation of the folding rollers to create the desired fold in the paper. The error occurs when the number of pulses by the paper-fold-motor clock sensor (PI4) is less than expected standard value. Also occurs when the status of the paper-fold home-position sensor (PI21) does not change when the paper-fold motor (M2) has been driven for 3 seconds. Control panel diagnostics: M2 folding motor (paper-fold motor) 1. Check the area around the folding rollers for a jam. 2. Test the paper-fold motor M2 by using the finisher component test from the control-panel display. ◦ If the folding rollers rotate properly, perform the following steps: ● Check sensor PI4 and sensor PI21 for damage. ● Verify that the sensor flags are not damaged, move freely, and are correctly aligned with the PI48 and PI21 sensor bodies. ● Make sure that the sensors are securely fastened to the chassis. 398 Chapter 7 Solve problems ENWW