HP LaserJet 2420 
Internal Components (4 of 4) Diagram

Registration Roller Assembly - RM1-1502 Sensor Lever - RC1-4027 Torsion Spring - RC1-4028 Roller Bushing - RC1-0922 Transfer Roller Assembly - RM1-1508 Main Motor - RL1-0587 Gear Covers - RC1-3954 Main Motor Cover - RC1-4108 Drawer Connector - VS1-7257 12 Tooth Gear - RU5-0400 Tray 1 Pickup Roller Shaft Assembly - RM1-1484 Tray 1 Pickup Roller - RL1-0568 Paper Guide - RC1-4083 Registration Sensor - RM1-1416 Torsion Spring - RU5-2386 Paper Sensor Lever - RC1-3939 Tray 1 Separation Pad Holder - RC1-3937 Tray 1 Separation Pad - RC1-0939 Lower Right Side Toner Cartridge Guide - RC1-4107 Compression Spring - RU5-2385 30 Tooth Gear - RU5-0366 Continuity Cap - RA0-1068 Transfer Plate - RL1-0581 Registration Roller Gear - RU5-0409 M4 Self Tapping Screw - XB4-7401 Feed Guide Assembly - RC1-3935 Registration Roller Assembly Cover - RC1-3936
REF PART # DESCRIPTION
1 RC1-3936 Registration roller assembly cover
2 RC1-3935 Feed guide assembly - Mounts above transfer roller assembly
3 XB4-7401 M4 truss head (flanged) screw - 10mm long - Typically used to secure plastic parts to the left and right side plates
4 RU5-0409 Registration roller gear - Mounts to end of registration roller - 14 tooth gear
5 RL1-0581 Transfer plate - Paper guide plate that mounts under transfer roller assembly
6 RA0-1068 Continuity cap - Gear retainer for 30 tooth Tray 1 pickup roller shaft
7 RU5-0366 Gear - 30 tooth - Attaches to right side end of Tray 1 pickup roller shaft
8 RU5-2385 Compression spring - Provides pressure for Tray 1 separation pad
9 RC1-4107 Cartridge guide - Lower right side toner cartridge guide
10 RC1-0939 Separation pad - Tray 1 separation pad - Does not include holder
11 RC1-3937 Pad holder - Separation pad holder
12 RC1-3939 Paper sensor lever - Mechanical device that activates photo sensor PS902 Tray 1 paper sensor
13 RU5-2386 Torsion spring - Provides tension for Tray 1 paper sensor flag
14 RM1-1416 Registration sensor - Top of page photo sensor PC board - PS901
15 RC1-4083 Paper guide - Paper guide under registration roller assembly
16 RL1-0568 Tray 1/MP Tray pickup roller - D-shaped replacement pickup roller
17 RM1-1484 Tray 1/MP Tray pickup roller shaft assembly - Includes roller shaft, bushings and pickup roller
18 RU5-0400 12 tooth gear - On left side of registration roller assembly
19 VS1-7257 Drawer connector - Connector located on top of tray assembly frame (right side), which connects tray assemblies to each other
20 RC1-4108 Cover for main motor M1 - Located on lower right side of printer
21 RC1-3954 Gear cover - Covers fusing and duplexer gears on lower right rear of printer
22 RL1-0587 Main motor - 26.2 watt DC motor on lower right side of printer - Motor M1
23 RM1-1508 Transfer roller assembly - Long metal shaft with black roller - Includes right side bushing and tension spring
24 RC1-0922 Roller bushing - Right side transfer roller bushing
25 RC1-4028 Torsion spring - Provides tension for top of page sensor flag
26 RC1-4027 Sensor lever - Top of page sensor flag - Used to detect edge of paper
27 RM1-1502 Registration roller assembly - Two roller shafts with six rollers each and frame assembly
For more information about the parts listed above go to www.PrinterSupplies.com