HP CP6015dn Service Manual - Page 432

Table 7-4 Control-panel messages (continued) Control panel message Description Recommended action NOTE: Manually lift the swing guide to the highest position, and then look at the control-panel display and verify a change in state for the sensor. ◦ If the sensor state does not change, perform the following steps: ● Verify that the connector J707 on the stacker controller PCA is fully seated and not damaged. ● Manually activate the sensor PI35 at the sensor body. If the control panel does not indicate a change of state, replace the sensor. ● If raising the swing guide does not activate the sensor but it can be manually activated at the sensor body, replace the swing-guide assembly. ◦ If the PI35 sensor state does change, check the drive gears for damage or obstructions. Replace components as necessary. 66.12.12 Finisher error - shutter movement malfunction Normal operation: When the shutter clutch (CL31) and stack ejection lower roller clutch (CL32) are on, the shutter moves up (closed) when the stack ejection motor (M32) turns forward and moves down (open, delivery enabled) when the motor turns backwards. Error occurs when the shutter home position sensor (PI45) indicates no change when the stack ejection motor (M32) is activated for 3 seconds, indicating that the shutter is not moving. Control panel diagnostics: none 1. Inspect the shutter for damage. If the shutter cannot freely move, replace the shutter assembly. 2. Remove the lower guide (grate-shaped) and check sensor PI45 for damage. Make sure that the sensor is securely fastened to the chassis. 3. Check for proper alignment of the shutter mounted on the back of the grate-shaped lower guide and the lift mechanism on the finisher chassis. 4. Verify that connector J721 on the stacker controller PCA is fully seated and not damaged. 5. Check CL31 during operation, and verify that it is correctly functioning by activating prior to the error. Replace CL31 if necessary. 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. 390 Chapter 7 Solve problems ENWW