HP 8050 Service Manual - Page 164

NOTE: If the error code "C6.0B02 - Device due for maintenance" has occurred with SNMP status enabled for that device, the device will show as "offline" from the driver and no print jobs can be sent to it. As a workaround, disable SNMP Status Enabled. In the Printers and Faxes folder, go to File, then Server Properties, click the Ports tab, select the port that was set up for that device, and then click Configure. Uncheck "SNMP Status Enabled", and then click OK. Drum encoder Clean the drum encoder disk and the three drum encoder sensors at the same time the drum spittoon is replaced. Clean the drum encoder as follows: CAUTION: Do not use any liquids to clean the drum encoder disk. The disk must be wiped only with a dry, lint-free cloth. 1. Remove two screws, and then carefully lift off the encoder cover. 2. With a flashlight, carefully inspect the encoder disk, encoder cover, and the three encoders for scratches, debris, such as paper fibers, white powder, black fragments or any other loose material. Replace the encoder disk if badly scratched in the encoder or index areas. NOTE: If available, use compressed air to clean these areas. NOTE: To correct an existing encoder mounting gap, unscrew the encoder cover (one screw) and make sure that the two encoder locating pins are fully inserted into the PCA mounting holes. Also be sure that the encoder cover locating pin is inserted into the PCA mounting hole when tightening the screw. 3. Wipe the encoder disk with a dry, lint-free cloth. 4. Use a dry lint-free cloth or soft bristle brush to clean each of the three encoder sensors. 5. Replace the encoder cover. NOTE: Ensure all three encoders and covers are mounted flush to their respective circuit boards. NOTE: When either the Drum Encoder Averager PCA (EN1) or the Drum Encoder PCA (EN2) is replaced, run the Drum Position calibration on page 140. Drop detect spittoon Replace the drop detect spittoon at the scheduled preventive maintenance interval. NOTE: Dispose of all wet material as appropriate. See Handling and disposing of service parts and consumables on page 26. CAUTION: Use gloves and safety glasses when handling ink parts. Drop detect spittoon on page 659 NOTE: The drop detect spittoon incorporates two bonding agent duct wipes. Reset the preventive maintenance counter for this item every time maintenance is performed. 98 Chapter 4 Managing and maintenance ENWW