HP CM6030 Service Manual - Page 533

Table 7-4 Control-panel messages (continued) Control panel message Description Recommended action 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. ● Carefully clean each sensor body with a clean, lint-free cloth, or gently blow clean air across each sensor to remove dust and debris. ● Verify that connector J3 on the saddle-stitcher controller PCA is fully seated and not damaged. Check the wiring at the PI4 sensor. ● Verify that connector J18 on the saddle-stitcher controller PCA is fully seated and not damaged. Check the wiring at the PI21 sensor. ● If the error persists, replace sensor PI4 or PI21. ● Only if the error persists and none of the previous steps correct the problem, replace the saddle-stitcher controller PCA. See Saddle-stitcher ENWW Control-panel messages 487