HP Color LaserJet 2550
Printer
Front Frame Assembly Diagram
Front Frame Assembly Diagram
| REF | DESCRIPTION | |
|---|---|---|
| Tray 1 flag spring - Provides torsion for the tray 1 paper sensor flag - Mounts in the lower portion of the front frame assembly | ||
| Tray hinge - 'L' shaped plastic arm - For the left side of the multi-purpose front input tray (tray 1) - Mounts in the lower portion of the front frame assembly | ||
| Tray hinge - 'L' shaped plastic arm - For the right side of the multipurpose front input tray (tray 1) - Mounts in the lower portion of the front frame assembly | ||
| Left roller bushing - Acts as the bearing and retainer for the left end of the paper pickup roller assembly (tray 1) - Mounts on the left side of the front frame assembly | ||
| Right roller bushing - Acts as the bearing and retainer for the right end of the paper pickup roller assembly (tray 1) - Mounts on the right side of the front frame assembly | ||
| Damper assembly (Gray plastic piece with small 13-tooth gear on it) - Helps to reduce clunking when the paper pickup roller is engaged - Engages the paper pickup roller - Mounts on the right side of the front frame assembly | ||
| Front inner cover (Graphite Black plastic) - Mounts on the front frame above the multi-purpose input tray | ||
| Front lower cover (Graphite Black plastic) - Front lower strip below the multipurpose input tray - Has recessed area for the printer logo | ||
| Roller cover - Covers the multipurpose paper pickup roller assembly - Mounts on the lower front of the front frame assembly | ||
| Paper flag - Plastic rod with paper sensing flag on one end and sensor activator flag on the other - Senses paper coming from the multi-purpose front input tray (tray 1) | ||
| Cable assembly (two 3-pin connectors) - Connects between the waste toner sensor PC board (J61) and the DC controller board (J108) | ||
| Solenoid cover (Steel) - For magnetic wave shielding | ||
| Right retaining spring - Helps to secure and ground the imaging drum/transfer assembly in the printer - Mounts on the upper right side of the front frame assembly | ||
| Left retaining spring - Helps to secure the imaging drum/transfer assembly in the printer - Mounts on the upper left side of the front frame assembly | ||
| Test print flag (Black lever) - Used to activate the print engine test switch - Mounts in a metal holder in the upper left of the front frame assembly | ||
| Solenoid assembly - (SL92) Lever on the solenoid disengages the stop on the drive gear on the paper pickup roller for the multipurpose input tray (tray 1) | ||
| Separation pad assembly - Includes the separation pad, holder and spring - Mounts below the multipurpose front input (Tray 1) pickup roller assembly | ||
| Tension spring - Provides support tension for the multipurpose front input tray guide assembly (two used) | ||
| 26 tooth gear (Black plastic) - Has 1/8th portion of gear cut away - Mounts on the end of the paper pickup roller for the multipurpose input tray (Tray 1) | ||
| Dual gear - 20 tooth / 40 tooth - Mounts between the right side of the front frame assembly and the paper pickup gear plate assembly | ||
| Dual gear - 26 tooth / 50 tooth (White plastic) - Part of the drive gears for the registration roller - Mounts on inside of the front frame assembly on the right side | ||
| 26 tooth gear (White plastic) - Has recess for shaft drive pin - Paper pickup clutch drive gear - Mounts between the right side of the front fame assembly and the paper pickup gear plate assembly | ||
| Sensor PC board - Small board with flag activated photo sensor - (PS718) Paper sensor for the multipurpose tray - Mounts in the lower right of the front frame assembly | ||
| M4 pan-head Phillips screw with self-tapping threads - 10mm long - Used primarily to secure metal parts to the internal plastic frames | ||
| Multipurpose front input tray assembly (tray 1) - Includes the front cover piece, pull-out paper support, and the flip-out extender - Mounts on front of printer (on the front frame assembly) | ||
| Gear assembly - Metal plate with two White plastic gears attached - Part of the drive gears for the paper pickup roller for the multipurpose input tray (tray 1) - Mounts on the right side of the front frame assembly | ||
| Paper guide assembly - Paper width adjustable guide assembly for the multipurpose front input tray (tray 1) - Mounts with the two hinges on the lower portion of the front frame assembly | ||
| Paper pickup roller ('D' shaped) - Mounts on the paper pickup roller assembly for the multipurpose front input tray (tray 1) | ||
| Paper pickup roller assembly - Includes the shaft, guide assembly cams, the D-shaped roller, and roller retainers - Picks paper from the multipurpose front input tray (tray 1) - Mounts in the lower portion of the front frame assembly | ||
| Cable clamp - White plastic clamp with mounting pin - Mounts on the upper right side of the front frame assembly and the lower left side of the middle frame assembly (two used) | ||
| E-label reader (contact board only) - Connects the cartridge non-volatile memory to the DC controller board - For the imaging drum/transfer assembly - Mounts to the the front frame assembly | ||
| Cable clip - 'C' shaped White plastic - Mounts in the opening on the cover for the paper pickup solenoid | ||
| 30 tooth gear (White plastic) - Part of the drive gears for the registration roller - Mounts on inside of the front frame assembly on the right side | ||
| Shaft bushing - For the paper pickup clutch gear shaft - Mounts on the plate of the multipurpose paper pickup gear assembly | ||
| Light blocking pad assembly - Black plastic frame with soft rubber gasket and stiff conductive Mylar piece (grounded) - Mounts to the top center of the front frame assembly | ||
| Left paper feed guide (small Black plastic arm) - Mounts to the left of the separation pad assembly on the lower front frame assembly | ||
| Image cartridge label - Shows the imaging drum/transfer assembly removal steps - Mounts on the right side of the front inner cover (Visible when the top cover is lifted) | ||
| Right paper feed guide (small Black plastic arm) - Mounts to the right of the separation pad assembly on the lower front frame | ||
| Bushing - For the registration roller gear drive shaft - Mounts on the right side of the front frame assembly | ||
| Top of page photoelectric sensor PC board - Includes the photoelectric top of page sensor and the print engine test switch - Mounts on the right side of the printer (Behind the formatter board assembly) | ||
| Waste toner sensor assembly PC board - Detects excess level of waste toner in the imaging drum/transfer assembly cartridge - Mounts on the right side of the front frame assembly | ||
| Density photoelectric sensor PC board - (PS81) Mounts under the light blocking pad on the top of the front frame assembly | ||
| E-ring clip - Secures the dual gear to the drive shaft which drives the registration roller - Located on the inside of the front frame assembly |