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HP Laser Jet 3390

HP Laser Jet 3390
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HP Laser Jet 3390/3392 MFP Maintenance Instructions
1 Fusing Assembly: RM1- 1298
1 Transfer Roller: RM1-1471
1 Pickup Roller: RL1-0540
CAUTION: Fuser may be hot. Turn off printer, unplug it and allow it to sit for 20
to 30 minutes before performing these maintenance procedures.
Fusing Assembly Removal and Replacement
1. Remove Right Cover
a.) Remove the stapler cassette
b.) Use a small flat blade screwdriver to release three tabs at the right rear cover assembly (callout 1)
c.) Release one tab from the bottom of the printer (callout 2)
2
1
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HP Laser Jet 3390 Specifications

General IconGeneral
Print TechnologyLaser
FunctionsPrint, Copy, Scan, Fax
Print SpeedUp to 22 ppm
Print ResolutionUp to 1200 x 1200 dpi
Maximum Paper Size8.5 x 14 in
Monthly Duty CycleUp to 8, 000 pages
Scanner TypeFlatbed, ADF
Copy SpeedUp to 22 cpm
Copy ResolutionUp to 600 x 600 dpi
Fax Modem Speed33.6 kbps
Fax MemoryUp to 250 pages
Processor Frequency264 MHz
Internal Memory64 MB
Display2-line LCD
Duplex PrintingManual
Scan ResolutionUp to 1200 dpi
Maximum Number of CopiesUp to 99 copies
Fax Transmission Speed3 seconds per page
Standard ConnectivityHi-Speed USB 2.0, Ethernet
Output Capacity125 sheets
Operating Systems SupportedWindows, Mac OS

Summary

Fusing Assembly Removal and Replacement

Remove Right Cover

Procedure to remove the right cover by releasing internal tabs.

Remove Left Cover

Procedure to remove the left cover by releasing tabs and rotating.

Remove Rear Cover

Removing the rear cover by unscrewing and releasing hinge mechanisms.

Remove ScannerADF Assembly

Disconnecting cables and connectors to remove the scanner and ADF assembly.

Remove Top Cover

Loosening screws after opening toner door to prepare for top cover removal.

Remove Stapler Assembly

Disconnecting cable and removing screws to detach the stapler assembly.

Stapler Power Supply and PCA Removal

Remove Stapler Power Supply

Removing the stapler power supply by disconnecting a connector and strap.

Remove Power-switch PCA

Disconnecting connectors and screws to remove the power-switch PCA.

Component Removal (Formatter, Fan, Duplex)

Remove Formatter

Disconnecting connectors and cables, then removing screws to detach the formatter.

Remove Fan

Disconnecting a connector and feeding the wire harness to remove the fan.

Remove Duplex Drive Assembly

Removing screws and carefully lifting the duplex drive assembly from the printer.

Remove Duplex Solenoid

Disconnecting a cable and removing a screw to detach the duplex solenoid.

Fuser Removal Procedure

Fuser Gear and Harness Manipulation

Pressing gear tabs, disconnecting connectors, and releasing wire harness holders.

Fuser Wire Harness Release

Pulling wire harness holders and releasing connectors from guides.

Fuser Chassis Separation

Removing screws and spreading chassis to release the fuser from the frame.

Transfer Roller Removal and Replacement

Open Toner Access Door

Opening the toner cartridge access door to access the transfer roller.

Remove Toner Cartridge

Removing the toner cartridge to gain access to the transfer roller.

Locate Transfer Roller Bushing

Identifying the transfer roller bushing next to the drive gear.

Remove Transfer Roller

Squeezing tabs on the bushing and lifting to slide and remove the transfer roller.

Tray 2 Pickup Roller Removal and Replacement

Remove Tray 2 Pickup Roller

Removing the tray two pickup roller by detaching the tray and releasing a tab.

Pickup Roller Collar and Separation Pad

Releasing collars and removing screws from the separation pad assembly.

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