HP Color LaserJet 2820
| 2830 | 2840 All-In-One Printer Series
Middle Frame Assembly Diagram
Middle Frame Assembly Diagram
| REF | DESCRIPTION | |
|---|---|---|
| Feed belt kit - Includes one paper feed guide drive (large) belt, two 3-belt pulley rollers, two 1-belt pulley rollers, and eight paper feed (small) belts - Mounts just behind the transfer roller in the middle frame assembly | ||
| Feed guide drive belt - Small belt approximately 5/16 inch wide with 'A' shaped ribs on it - Between the feed drive roller and the small center roller - Driven via the transfer roller gear train | ||
| Feed belt kit - Includes one paper feed guide drive (large) belt, two 3-belt pulley rollers, two 1-belt pulley rollers, and eight paper feed (small) belts - Mounts just behind the transfer roller in the middle frame assembly | ||
| Pulley roller (accommodates three feed belts) - Small black roller approximately 3.49cm (1-3/4 inches) long with three ball type pulleys - Mounts just behind the transfer roller in the middle frame assembly (two used) | ||
| Feed belt kit - Includes one paper feed guide drive (large) belt, two 3-belt pulley rollers, two 1-belt pulley rollers, and eight paper feed (small) belts - Mounts just behind the transfer roller in the middle frame assembly | ||
| Paper feed belt - Small black rubber belt approximately 1/8 inch wide with little 'A' shaped ribs on it - Goes between the feed drive roller and the pulley rollers (eight used) | ||
| Rubber foot - Square self-adhesive rubber foot - Attaches to the rear of the middle frame assembly (two used) | ||
| Contact plate - Runs between the shaft on the registration roller and the metal entrance guide assembly | ||
| Static eliminator ground plate - Right angled metal piece with small teeth on top edge - Mounts from underneath on the middle frame assembly just behind the pulley rollers | ||
| Feed shaft kit - Includes the feed drive shaft, the belt roller, the idler gear shaft, and the 23 tooth idler gear - Mounts just behind the transfer roller in the middle frame assembly | ||
| Feed drive shaft - Long shaft with eight feed belt ball type pulleys and one ribbed feed guide drive belt pulley - Mounts behind the transfer roller on the middle frame assembly | ||
| Feed shaft kit - Includes the feed drive shaft, the belt roller, the idler gear shaft, and the 23 tooth idler gear - Mounts just behind the transfer roller in the middle frame assembly | ||
| Belt roller - Small oval shaped roller approximately 1-3/4 inches long - Mounts toward the center of the metal feed plate on the middle frame assembly | ||
| Feed shaft kit - Includes the feed drive shaft, the belt roller, the idler gear shaft, and the 23 tooth idler gear - Mounts just behind the transfer roller in the middle frame assembly | ||
| Idler gear shaft - Short metal rod - Shaft for the transfer and feed drive idler roller - Mounts on the left side of the middle frame assembly | ||
| Electrical contact spring - Rear electrical contact spring - Provides high voltage to the toner cartridge via a cable assembly and connection through the carousel plate assembly - Connects to the high voltage board | ||
| Electrical contact spring - Spring steel wire with compression springs formed on both ends - One end provides upward pressure on the right bushing for the transfer roller - Connects to high voltage board | ||
| Feed shaft kit - Includes the feed drive shaft, the belt roller, the idler gear shaft, and the 23 tooth idler gear - Mounts just behind the transfer roller in the middle frame assembly | ||
| 22 tooth gear (Black plastic) - Small gear with diagonally cut teeth - Idler gear between the transfer roller assembly and the feed drive shaft - Mounts on the left side of the middle frame assembly | ||
| Electrical contact spring - Mounts on the middle frame assembly behind the transfer roller - Of the four similar springs, this one is next to the one on the far left - Connects to high voltage board | ||
| Electrical contact spring - Mounts on the middle frame assembly behind the transfer roller - Of the four similar springs, this one is on the far right - Connects to high voltage board | ||
| Electrical contact spring - (Front) Provides high voltage to the toner cartridge via a cable assembly and connection through the carousel plate assembly - Connects to the high voltage board | ||
| Electrical contact spring - Mounts on the middle frame assembly behind the transfer roller - Of the four similar springs, this one is just to the left of the one on the far right - Connects to high voltage board | ||
| Electrical contact spring - Mounts on the underside of the middle frame assembly - Connects to high voltage board | ||
| Electrical contact spring - Mounts on the middle frame assembly behind the transfer roller - Of the four similar springs, this one is on the far left - Connects to the high voltage board | ||
| Bushing (black plastic) - Mounts on the right end of the registration roller assembly | ||
| Insulating sheet (Transparent plastic) - For the power supply base assembly - Mounts to the underside of the middle frame assembly | ||
| Transfer roller kit - Includes the transfer roller, two transfer side plates ('U' shaped metal inserts), the right end shaft bushing, and the two compression springs at the left end of the roller - Mounts towards the front and on top of the middle frame | ||
| Transfer slide plate - Small 'U' shaped metal insert plates - Mount in the bushing wells for the transfer roller on the middle frame assembly (two used) | ||
| Connector assembly - For optional paper tray - Mounts to the bottom right side of the middle frame assembly | ||
| 30 tooth gear (White plastic) - Mounts on the end of the registration roller drive shaft | ||
| Entrance guide assembly - Mounts in front of the transfers roller assembly (behind the transfer inlet guide) | ||
| Registration roller assembly - Includes the roller, bushings, mounting plate, paper sensor, and the sensor flag - Mounts from the bottom toward the front center of the middle frame assembly | ||
| Grounding cable assembly - Connects from the optional tray connector housing to the metal right side frame assembly | ||
| Registration shutter assembly - Includes the metal roller, mounting frame, grounding springs, and the dual coupling gear - Mounts over the registration roller at the front of the middle frame assembly | ||
| Cable assembly - 'Y' type cable (three connectors) - The 14-pin connector splits into an 8-pin connector and a 6-pin connector - Connects between the DC controller board (J118) and the optional paper tray connectors (J230) | ||
| Gear Cover (Small Black plastic cover) - Covers the left end of the feed drive shaft - Mounts towards the left side of the middle frame assembly | ||
| Contact plate - copper clad metal spring - Holds the left end of the small 500 Meg-ohm resistor - Mounts on the left side of the middle frame below the entrance guide assembly | ||
| Contact plate - copper clad metal spring - Holds the right end of the small 500 Meg-ohm resistor - Mounts on the left side of the middle frame below the entrance guide assembly | ||
| Sensor arm and flag - Activates the photo sensor (Does NOT include the roller) - For the Leading edge paper sensor for the fusing assembly (PS720) - Protrudes up through the feed plate on the middle frame assembly | ||
| Sensor assembly mounting holder - Holds the leading edge paper sensor (PS720) for the fusing assembly - Mounts on the underside left on the middle frame assembly | ||
| Sensor flag roller (small White plastic roller) - Mounts in the sensor arm flag for the leading edge paper sensor for the fusing assembly (PS720) | ||
| Feed belt kit - Includes one paper feed guide drive (large) belt, two 3-belt pulley rollers, two 1-belt pulley rollers, and eight paper feed (small) belts - Mounts just behind the transfer roller in the middle frame assembly | ||
| Pulley roller (accommodates one feed belt) - Small black roller approximately 1.59cm (5/8 inch) long with one ball type pulley - Mounts just behind the transfer roller in the middle frame assembly (two used) | ||
| Cable assembly (four 3-pin connectors) - Connects between the DC controller board (J107 and J138) and the leading edge paper sensor for the fusing assembly (J720) and the registration sensor (J711) | ||
| Sensor PC board - Small board with flag activated photo sensor - (PS718) Detects paper from the multipurpose input tray, mounts on the right side of the front frame assembly - (PS720) Front of page sensor for the fusing assembly, mounts on the underside of | ||
| Tension spring - Provides a small amount of return tension for the sensor flag arm on the leading edge sensor for the fusing assembly (PS720) | ||
| Terminal contact plate - Provides for a connection between the high voltage cable assembly and the front toner cartridge contact spring - Mounts on the underside left of the middle frame assembly | ||
| Terminal contact plate - Provides for a connection between the high voltage cable assembly and the rear toner cartridge contact spring - Mounts on the underside left of the middle frame assembly | ||
| Cable clip - White plastic push-in clip with mounting pin - Mounts on the contact plate on the top right side of the middle frame assembly | ||
| High voltage cable assembly - Connects between the high voltage board spring contacts (on the middle frame assembly) and the cables for the toner cartridge carousel left plate assembly (J511 and J512) | ||
| Cable clamp - White plastic clamp with mounting pin - Mounts on the upper right side of the front frame assembly, the lower left side of the middle frame assembly, and the lower middle of the fusing assembly (three used) | ||
| Feed shaft kit - Includes the feed drive shaft, the belt roller, the idler gear shaft, and the 23 tooth idler gear - Mounts just behind the transfer roller in the middle frame assembly | ||
| Torsion spring - Secures the belt roller (for the feed drive shaft) in the top of the middle frame assembly | ||
| Transfer roller kit - Includes the transfer roller, two transfer side plates ('U' shaped metal inserts), the right end shaft bushing, and the two compression springs at the left end of the roller - Mounts towards the front and on top of the middle frame | ||
| Transfer roller assembly - Long black foam type roller - Transfers static charge to paper - Mounts towards the front and on top of the middle frame assembly | ||
| Transfer roller kit - Includes the transfer roller, two transfer side plates ('U' shaped metal inserts), the right end shaft bushing, and the two compression springs at the left end of the roller - Mounts towards the front and on top of the middle frame | ||
| Bushing assembly (Black plastic bushing with small guide roller on top) - Holds the right end of the transfer roller assembly in the middle frame assembly | ||
| Transfer roller kit - Includes the transfer roller, two transfer side plates ('U' shaped metal inserts), the right end shaft bushing, and the two compression springs at the left end of the roller - Mounts towards the front and on top of the middle frame | ||
| Compression spring - Provides upward pressure for the left transfer roller bushing | ||
| Resistor - 500 Mega Ohm, 300mW - Mounts on the left side of the middle frame below the entrance guide assembly - Held in place with two small contact plates | ||
| Transfer inlet guide assembly - Angled metal guide between the registration roller and the transfer roller - Mounts to the middle frame assembly |