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HP LaserJet 4345 MFP series troubleshooting


To better help our customers - this HP Laserjet 4345 MFP series troubleshooting page is simply a guide / additional information for your convenience, as you search for assistance in repairing your machine.

Although this information is provided for your convenience it is recommended, for the most part, that a technician inspects your office equipment. It is recommended to consult with a professional when ordering your printer part(s).

P/s use our SmartSearch to locate your part number.



Q3942A HP LaserJet 4345 MFP Supplies
Part Number Description Price
Swing plate assembly - For Tray 2 paper lift assembly - Located between the main gear assembly and the fuser, just above the power supply - Contains swing plate assembly and new fuser pressure release gear $78.00
Staple cartridge - Contains 5000 staples - For the add-on staple/stacker unit $42.00
Replacement staple cartridge - Contains 5000 staples $42.00
Scanner lamp - Mounts in the middle of the optical carriage assembly in the flatbed scanner assembly RFQ
Scanner assembly - Complete flatbed scanner assembly $721.10
JetDirect connectivity card - Has one USB port, one serial (DB9) port, and one LocalTalk port - Plugs in one of the EIO slots on selected DesignJet and LaserJet printers $245.00
High performance 20GB hard disk - Plugs in one of the Extended Input/Output (EIO) slots $275.00
High performance 20GB hard disk - Plugs in one of the Extended Input/Output (EIO) slots $275.00
High performance 20GB hard disk - Plugs in one of the Extended Input/Output (EIO) slots $275.00
High performance 20GB hard disk - Plugs in one of the Extended Input/Output (EIO) slots $275.00
JetDirect 620N internal print server LAN interface board - 10Base-T and 100Base-TX - Plugs into peripheral EIO slot, has RJ-45 connector. $305.00
HP JetDirect 620n internal print server - 10BaseT and 100BaseTX LAN interface board - Plugs into peripheral EIO slot - Has an RJ-45 connector $305.00
ROHS HDD HDI SMO KIT HARD DRIVE $240.00
ROHS HDD HDI SMO KIT HARD DRIVE $240.00
ROHS HDD HDI SMO KIT HARD DRIVE $240.00
ROHS HDD HDI SMO KIT HARD DRIVE $240.00
ROHS HDD HDI SMO KIT HARD DRIVE $240.00
ROHS HDD HDI SMO KIT HARD DRIVE $240.00
ROHS HDD 20GB HARD DRIVE $269.85
ROHS HDD 20GB HARD DRIVE $240.00
HP Jetdirect 625n internal ethernet print server - Provides 10BaseT, 100BaseTX, or 1000BaseT interface for products with an EIO port $325.00
HP Jetdirect 625n internal ethernet print server - Provides 10BaseT, 100BaseTX, or 1000BaseT interface for products with an EIO port $325.00
ADF assembly - For LaserJet 4345MFP - Includes ADF rear cover, ADF cable, ADF input tray, ADF front cover, ADF mylar replacement kit, ADF white scan background, ADF mylar holder assembly, ADF white mylar backing with 2 springs, ADF left cover, screw 4x10 $459.00
Three ADF mylar replacement kit - Includes three clear mylar replacement strips for the ADF guide - Mounts in the ADF mylar holder assembly $25.00
HP 64MB 100 Pin DDR DIMM - Used to add flash memory-based accessory fonts, macros, and patterns $50.00
HP 256MB 100 Pin DDR DIMM - Used to add flash memory-based accessory fonts, macros, and patterns $140.00
LaserJet 4345 MFP Formatter assembly update part number. $325.00
LaserJet 4345 MFP Formatter assembly update part number. $325.00
LaserJet 4345 MFP Formatter assembly unit. $325.00
LaserJet 4345 MFP Formatter assembly unit. $325.00
500 sheet stapler/stacker assembly for LaserJet 4345 and 4370MFP $475.00
Black toner cartridge - Has maximum capacity toner (prints approximately 18,000 pages) $203.68
Duplexer assembly for LaserJet 4345 - For two sided printing $409.74
HP LaserJet 4345mfp optional duplexer assembly - For two sided printing $370.00
ADF maintenance kit - Includes the ADF paper pickup roller assembly, separation pad assembly, and three clear mylar replacement strips. $98.37
ADF maintenance kit - Includes the ADF paper pickup roller assembly, separation pad assembly, and three clear mylar replacement strips $120.00
LJ4345MFP 110V MAINTENENCE KIT $345.00
LJ4345MFP 110V MAINTENENCE KIT $345.00
(Outright Refurb) LJ4345MFP 110V MAINTENENCE KIT $288.88
(Outright Refurb) LJ4345MFP 110V MAINTENENCE KIT $288.88
LaserJet 4345MFP printer maintenance kit (120V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $345.00
LaserJet 4345MFP printer maintenance kit (120V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $345.00
LJ4345MFP 110V MAINTENENCE KIT $345.00
LJ4345MFP 110V MAINTENENCE KIT $345.00
LaserJet 4345MFP printer maintenance kit (120V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $326.71
HP LaserJet 4345mfp 110VAC maintenance kit $330.00
(Outright Refurb) HP LJ 4345MFP 110v maintenance kit $288.88
(Outright Refurb) HP LJ 4345MFP 110v maintenance kit $288.88
LaserJet 4345MFP printer maintenance kit (220V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $498.00
LaserJet 4345MFP printer maintenance kit (220V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $498.00
LaserJet 4345MFP printer maintenance kit (220V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $498.00
LaserJet 4345MFP printer maintenance kit (220V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $498.00
LaserJet 4345MFP printer maintenance kit (220V) - Includes fusing assembly separation rollers, transfer roller, paper feed rollers, pickup roller, gloves and instruction manual $326.71
LJ4345MFP 220V MAINTENANCE KIT $498.00
Three ADF mylar replacement kit - Includes three clear mylar replacement strips for the ADF guide - Mounts in the ADF mylar holder assembly $25.00
ADF mylar replacement kit - Includes three clear mylar replacement strips for the ADF guide - Mounts in the ADF mylar holder assembly $55.00
Three ADF mylar replacement kit - Includes three clear mylar replacement strips for the ADF guide - Mounts in the ADF mylar holder assembly HP LJ 4345MFP ADF mylar sheets $25.00
128MB, 100-pin, DDR SDRAM DIMM memory module $420.00
HP 256MB 100-pin DDR DIMM - Used to add flash memory-based accessory fonts, macros, and patterns $789.69
Environment temperature detection thermistor - Detects ambient air temperature to determine length of time for fuser warm up. $18.80
Swing plate assembly - For Tray 2 paper lift assembly unit $31.00
Reversing assembly - Reverses paper orientation of output tray $197.65
HP FUSER ASSEMBLY 110V $198.00
HP FUSER ASSEMBLY 110V $198.00
(Outright Refurb) HP FUSER ASSEMBLY 110V $190.00
(Outright Refurb) HP FUSER ASSEMBLY 110V $190.00
Fusing Assembly - For 100-127 VAC - Bonds toner to paper with heat $326.71
Fusing assembly - 110 volts $326.71
Fusing assembly - 220 volts RFQ
Fusing assembly - 220 volts RFQ
Fusing assembly - 220/240 VAC - Bonds toner to paper with heat $323.09
Fusing assembly - 220 volts $323.09

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