User manual CANON LBP-1760

[. . . ] LBP-1760 SERVICE MANUAL REVISION 0 MAY 1998 COPYRIGHT © 1998 CANON INC. RY8-1387-000 CANON LBP-1760 REV. 0 MAY 1998 PRINTED IN JAPAN (IMPRIME AU JAPON) COPYRIGHT © 1998 CANON INC Printed in Japan Imprimé au Japon Use of this manual should be strictly supervised to avoid disclosure information. of confidential Prepared by PERIPHERAL PRODUCTS QUALITY ADVANCEMENT DIV. PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT. CANON INC. [. . . ] 9) Remove the 5 screws, then pull the multi-purpose tray pick-up unit toward you to remove. Figure 3-3-8 5) Disconnect the connector of the solenoid cable. Screws Multi-purpose tray pick-up unit Connector Figure 3-3-11 Figure 3-3-9 3 - 14 CHAPTER 3 G. Removal from the printer 1) Remove the multi-purpose tray unit according to the steps 1) through 9) on page 3-14. 2) Remove the screw, and move the front inner cover aside. 2. Pre-transfer roller 1) Remove the 2 springs, gear, 2 E-rings, the and 2 bushings, then take out the pre-transfer roller. Screw Front inner cover Springs Gear E-rings Bushings Pre-transfer roller Figure 3-3-12 Figure 3-3-14 3) Remove the 6 screws and then the registration unit. b. Registration arm 1) Remove the pre-transfer roller. 2) Remove the E-ring and then the bushing. Screws Registration unit E-ring Figure 3-3-13 Figure 3-3-15 Bushing 3 - 15 CHAPTER 3 3) Undo the screw, and then remove the ground plate and the spring. 4) Remove the E-ring and then the bushing. 7) Remove the thrust roller, then move the rollers on both sides toward inside. 8) Undo the 2 parallel pins, then remove the rollers and shaft from the registration arm. Screw Spring Bushing Ground plate E-ring Thrust roller Parallel pins Shaft Rollers Rollers Registration arm Figure 3-3-16 Figure 3-3-18 5) Remove the 2 bushings and then the 2 lifters. 6) Take off the guide plate and undo the spring. <Precautions on reassembly> Reassemble the registration arm as shown below. Bushings Guide plate Lifters Spring Figure 3-3-19 Figure 3-3-17 3 - 16 CHAPTER 3 H. Removal from the printer 1) Remove the multi-purpose tray unit according to the steps 1) through 9) on page 3-14. 2) Disconnect the connector of the feed roller clutch cable. 3) Remove the 2 screws and then the feed roller unit. Feed roller clutch 1) Release the E-ring, remove the gear, then take out the feed roller clutch. E-ring Gear Feed roller clutch Figure 3-3-21 Connector Feed roller unit Screws Figure 3-3-20 <Precautions on reassembly> When reassembling the feed roller unit, wire the clutch correctly so that the clutch wire does not touch the gears. 3 - 17 CHAPTER 3 I. Removal from the printer 1) Remove the drive unit according to the steps 1) through 11) on page 3-8. 2) Take off the engine controller PCB according to the steps 2) through 9) on page 3-27. 4) Undo the 2 screws, then slide the feed guide unit in the direction of the arrow to remove it. Removal from the printer 1) Remove the top cover unit and left cover. [. . . ] DEFAULTS MRT COMPRES- The printer is using MRT Compression, with the possibility of print quality deration (lossy SION compression) Toner is low. READY TONER LOW Replace the toner cartridge. The printer will continue to operate, but the images will degrade. No toner cartridge is installed in the printer, or Replace the toner cartridge or, if TONER CART the cartridge is not installed correctly. [. . . ]