HP Color LaserJet 2820 | 2830 | 2840 All-In-One Printer Series
Main Drive Assembly Diagram

81 Tooth Gear - RS7-0570 Dual Gear - RS7-0571 Dual Gear - RS7-0572 186 Tooth Gear - RS7-0573 Dual Gear - RS7-0574 Right Side Plate Rear Assembly - RG5-7580 Cable Assembly - RG5-7115 Rack Slide - RB3-0090 Clutch Assembly - RH7-5335 Main Motor Assembly - RF5-4063 Main Drive Assembly - RG5-7579
REF PART # DESCRIPTION
1 RG5-7579 Main drive (right side plate) assembly - Includes the right side plate front assembly (with main motor, clutch, and gears) and the right side plate rear assembly (with drive gears) - Mounts on the right side
RG5-7581 Right side plate front assembly - Includes the front half of the metal frame assembly, gears, imaging drum/transfer assembly drive cams, cover engaging mechanism, roller engaging clutch (CL2), and main drive motor (DCM701) - Mounts on the right side
2 RF5-4063 Main motor assembly - Large motor mounted on a controller PC board - (DCM701) Mounts on the inside of the metal right side frame assembly
3 RH7-5335 Electromagnetic clutch assembly (24VDC) - Electrical clutch between the clutch drive gear and shaft - (CL2) Engages the roller within the imaging drum/transfer assembly from the main gear train
4 RB3-0090 Rack slide - White plastic piece with gear teeth laid out in rack form on both sides - Part of the mechanism that disengages the imaging drum/transfer assembly cams when the top cover is opened - Mounts vertically on the metal right side frame
5 RG5-7115 Cable assembly (two 3-pin connectors) - Connects between the roller engaging photo sensor (J714) and the DC controller board (J115)
6 RG5-7580 Right side plate rear assembly - Includes the rear half of the metal right side plate and the two associated gears - Mounts on rear half of right side of printer
7 RS7-0574 Dual gear - 32 tooth / 123 tooth - Large gear which mounts toward the front on the right side plate front assembly
8 RS7-0573 186 tooth gear - Uppermost large gear that mounts on a short shaft between the gear retainer bracket and the right side plate front assembly
9 RS7-0572 Dual gear - 31 tooth / 90 tooth - Mounts on a pin on the right side plate front assembly (between the gear retaining bracket and the right side plate)
10 RS7-0571 Dual gear - 23 tooth / 54 tooth - Small gear that mounts toward the front on a short shaft between the gear retainer bracket and the right side plate front assembly
11 RS7-0570 81 tooth gear - Mounts on a pin on the right side plate front assembly (between the gear retaining bracket and the right side plate)
For more information about the parts listed above go to  www.PrinterSupplies.com