HP CP6015dn Service Manual - Page 405

Table 7-4 Control-panel messages (continued) Control panel message Description Recommended action using the finisher component tests from the control-panel display. NOTE: For finishers with a booklet maker, also test sensor PI3 (bookletdoor-1 sensor). 13.12.17 Engine to finisher timing jam: unexpected arrival of paper to finisher Upper-paper-path entry sensor (PI33) has detected paper before a signal from the engine has been received, indicating that paper is being delivered from the IPTU to the finisher. Control panel diagnostics: none To locate this sensor, see Detect jams in the stacker unit on page 636. 1. Verify that the latest firmware updates are installed for the engine and finisher. 2. Remove any media in the upper paper path that might be activating sensor PI33. If no media is found at PI33, proceed to step 3. If media is found at PI33, perform the following steps: ◦ Make sure that the power/ communication cable from the IPTU to the finisher is properly connected. ◦ Make sure that the IPTU is properly connected to the engine and that the mounting screws are tight. ◦ Make sure that the finisher is properly grounded. ● Ensure that the finisher is latched and locked to the engine by tightening the thumbscrew inside the front door. ● Ensure that the groundingframe assembly (the bar with the wheel located between the engine and the finisher) is in the "down" position with the wheel touching the floor and that the grounding plate is not damaged. NOTE: The groundingframe assembly is in the "up" position when the finisher is shipped. It must be lowered when the finisher is installed. ◦ If the error persists, replace the IPTU. See IPTU on page 646. 3. Check for media at the finisher entrance point and at sensor PI33. ENWW Control-panel messages 363