HP Color LaserJet CM4730 Service Manual - Page 540

Table 6-2 Control-panel messages (continued) Control panel message Description 13.11.00 JAM INSIDE UPPER RIGHT DOOR Paper is jammed inside the upper right door. There is a jam in the oblique roller area between sensor SR8001 (paper reversing sensor) and SR12 (top of page sensor), or in the fuser. 13.12.07 Jam In Stapler The stapler could not finish its cycle but was able to return to the home position If the stapler drive does not return to home position (HP) during the normal cycle, the stapler/stacker driver signals M1304 (stapler motor) to rotate once in reverse. If the HP signal is now detected, the stapler/ stacker driver sends a signal to the formatter that a staple jam is present. Recommended action 1. Follow the onscreen help to clear the jam. 2. Check for obstructions in the fuser. 3. Check for obstructions in the duplexer. 4. Ensure that media meets specifications. 5. Ensure that the ETB rollers roll freely. 6. Ensure that there is no obstruction at the bottom of the ETB. 1. Remove the staple cartridge and any loose staples or staples that might be obstructing stapler movement. 2. Remove one sheet of staples from staple cartridge and try again. 3. Inspect the staple cartridge for damage. Replace the staple cartridge if it is damaged. 4. Verify that genuine HP staples are being used. NOTE: Staples come preloaded in the staple cartridge and cannot be ordered separately as a refill from HP. 13.12.08 Jam In Left Accessory 13.12.09 Jam In Left Accessory (multi-bin mailbox only) 5. If none of the above corrects problem, replace the stapler/stacker unit. Stay jam in accumulator. Paper sensor PS 1. 1302 stayed activated longer than expected. This signal is generated by sensor PS1302 (delivery sensor). PS1302 is located just 2. before the delivery rollers. In order to reach or see the sensor arm, lift the upper 3. delivery rollers and upper paper-path guide plate. You will now be able to see and toggle the sensor arm activating PS1302. Remove any jammed paper obstructing the paper path to the delivery rollers. Turn the MFP off then on. If the error persists, replace the stapler/ stacker unit. Stay jam. Inlet-paper sensor PS1501 remained activated longer than expected. This signal is generated by sensor PS1501 (paper-inlet sensor). PS1501 is located under the lower entrance guide plate with the sensor arm extending up through the guide plate and into the paper path. 1. Slide the mailbox device away from the MFP and remove any paper found entering the mailbox device or exiting the MFP. 2. Slide the mailbox back into the MFP and check for an error. 3. If the error persists, turn the MFP off then on. 4. If none of the above corrects the problem, replace the MBM unit. 520 Chapter 6 Problem solving ENWW