Remove the one connector from main motor. The waste toner is collected at the output end of the sweep roller and sent back to the toner container, into the waste toner reservoir. . Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities. Remove the main charger unit by lifting Drum unit Main charger unit Main charger unit.
Defective developing roller in the developer unit. Pull out the rear cover axis with spring from the axis hole on side. Remove the two stoppers and then remove the two clutches. Remove the heat R bush, heat L bush and Heat R bush heat gear from the heat roller. Purpose To acquire the current printing environmental parameters and cumulative information. Remove the one screw and terminal from the bottom frame plate. Printing a status page for test.
See page 1-6-15 or 16. Controls the paper cassette paper feed. Open the printer top cover and check that the drum unit and developer unit is correctly seated. Hooks Hook : Three latches Left cover cover inside Figure 1-6-3 Removing the left cover 6. Remove the two connectors and then Screw remove the laser scanner unit.
If none, replace the feed The feed clutch does clutch. The developing roller contains a 3-pole S-N- S magnet core and an aluminum cylinder rotating around the magnet core. Clamps Wire Connector Figure 1-6-29 4. While opening the rear cover and then Hook remove the two screws. No transfer bias is bias terminal and transfer output. . Avoid multiple connections to one outlet: they may cause fire or electric shock.
Paper feed roller Figure 1-6-5 Removing the paper feed roller 1-6-4. Remove the two screws and then separate the upper fuser frame and lower fuser frame. Power switch Manual feed tray 12. Dirty edges and back of the paper can be caused by toner accumulated on such parts as the paper chute, paper transportation paths, the bottom of the drum and developer, and the fuser unit inlet. Push on the base plate until it click into posi- tion flat. Controls the software such as the print data processing and provides the interface with computer. Remove the four screws and then remove the main motor.
Toner container Paper gauge 13. Remove the two screws and terminal. Turn the printer bottom side up. Remove the transfer roller from bushes. If necessary, apply a small amount of electro-conductive grease onto the tab.
The heat roller has a heater lamp 750 W inside which continuously turns on and off by the fuser thermistor to maintain the constant temperature onto the heat roller surface. Remove the right side cover. Memory socket Doing so may cause damage to the printer and the expansion memory. Laser scanner unit Screw Screw Figure 1-6-28 1-6-21. Remove the wire from two clamps.
Check for continuity across the coil. Defective drum unit or developer unit. Defective drum unit or developer unit. Paper exit section Main charger unit 12. Poor contact in the feed Reinsert the connector.
. The printer system can automatically rec- ognize whether the data to be overwritten is for controller firmware. Controls the primary paper feed. Compensates the vertical angle at which the laser beam hits a polygon mirror segment. See page 1-6-15 or 16. Remove the two screws nuts , plate cord, and terminal. The transfer roller is negatively biased so that the positively charged toner is attracted onto the paper while it is pinched by the drum and the transfer roller.