Used hp 4000 and laserjet 4050 Printers

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HP LaserJet 4050 Printer series - Product Specifications

This document lists the specifications for the HP LaserJet 4050 printer.
Model numbers
Printer Model Number
HP LaserJet 4050 printer C4251A
HP LaserJet 4050 N printer C4253A
HP LaserJet 4050 T printer C4252A
HP LaserJet 4050 TN printer C4254A
HP LaserJet 4050 SE printer C4255A
HP LaserJet 4050 USB-Mac printer C7829B
Serial number location
The model number and printer serial number are listed on an identification label located under the top cover on the right side of the printer.
Printer description
Quick and easy to install, this printer provides fast, high-quality printing with ProRes 1200 for outstanding graphics, and up to 220 levels of gray for smooth, photo-like images. The printer features an online help system, and has an expandable design for increased printing flexibility.
Printer features
Speed and throughput
  • Instant-on fuser prints the first page in 15 seconds.
  • Prints letter-size paper 17 pages per minute (ppm) or A4-size paper 16 ppm
  • "RIP ONCE" capability with 16 MB or hard disk option
  • FastRes 1200 for faster printing
  • ProRes 1200 for better graphics
  • Up to 220 levels of gray for smooth, photo-like images
  • HP precision toner for clear, sharp output
Paper handling
  • Handles up to 600 sheets of paper (base) and expandable to handle up to 1100 sheets of paper with accessories
  • Prints a wide range of sizes and weights
Language and fonts
  • HP PCL 6, PCL 5e, and PostScript (R) Level 2 emulation
  • 110 fonts for Microsoft (R) Windows, plus HP FontSmart
Expandable design
  • 500-sheet universal paper tray, 75-envelope power feeder, and duplex printing accessory available
  • Flash storage for forms, fonts, and signatures
  • Memory can be expanded up to 192 MB
  • Two EIO slots for connecting to networks or additional devices
  • Jetsend enabled
Printer specifications
Characteristic Description
Speed 17 pages per minute (ppm)

133 MHz RISC microprocessor

First page out = 15 seconds

"RIP ONCE" capability with 16 MB or hard disk option
Resolution 300 dpi with PCL5e/HP's PostScript Level 2 emulation (PS)

600 dpi with PCL5e/PS

HP FastRes 1200 (PCL6, PS)

HP ProRes 1200 at engine speed (17 ppm) (PCL6, PS)
Typefaces 100 Scalable TrueType (80 built-in, 30 via HP FontSmart)

Euro symbol
Memory Options 8 MB SDRAM standard (4050/4050 T)

16 MB SDRAM standard (4050 N/ 4050 TN)

Optional Memory:

4, 8, 16, MB EDO DIMMs

4, 8, 16, 32, 64 MB SDRAM DIMMs
Mass Storage Options 2 and 4 MB Flash DIMMs Greater than 1 GB hard disk
Expansion Slots 3 100-pin DIMM slots

2 enhanced I/O (EIO) slots
Interface Bidirectional IEEE 1284-compliant parallel port

CJ3113A - 10/100Base-TX RJ-45 Jet Direct Card (bundled with 4050 N/4050 TN)

(FIR) HP Fast InfraRed Receiver (standard on the 4050 N/4050 TN)

(optional on the 4050/4050T)

RS232 9-pin serial port

Paper Handling Connector (PHC)
Optional Networking 10Base-T and 10Base-2


Token Ring

Paper Trays 100-sheet Tray 1

Size: 76 x 127 mm to 216 x 356 mm (3 x 5 inches to legal)

500-sheet Tray 2 (4050/4050 N)

Size: letter, legal, A4

250-sheet Trays 2 and 3 (4050 T/4050 TN)

Size: letter, A4, executive, legal, B5 (ISO), B5 (JIS), A5

Optional 500-sheet Universal Tray

Supports standard and custom sizes from 149 x 210 mm (5.8 x 8.2 inches) to 216 x 356 mm (8.5 x 14 inches)
Paper Path Straight through from Tray 1 to Rear Output Bin or to Top Output Bin
Output Capacity 250-sheet Top Output Bin

50-sheet Rear Output Bin
Paper Handling Options Duplexer, Envelope Feeder, Optional 500-sheet Universal Tray Assembly
Duty Cycle Up to 65,000 pages-per-month
System requirements
Windows 3.1x
The minimum system requirements for users running Windows 3.1x are:
  • Windows 3.1x or Windows for Workgroups 3.1x
  • MS-DOS (R) 5.0 or greater
  • 386 processor or greater
  • 4 MB RAM
  • 4 MB available disk space
  • For full functionality, a network service should be installed. An IEEE-1284-compliant parallel cable and/or an HP Jetdirect card are also recommended.
Windows 9X
The minimum system requirements for users running Windows 9x are:
  • Windows 95 or Windows 98
  • 386 processor or greater
  • 8 MB RAM, 16 MB recommended
  • 4 MB available disk space
  • For full functionality, a network service should be installed. An IEEE-1284-compliant cable and/or an HP Jetdirect card are also recommended.
Windows NT 4.0
The minimum system requirements for clients running Windows NT 4.0 Workstation are:
  • 32-bit x 86-based microprocessor (such as Intel 80386/25 or higher) and Intel Pentium (R)
  • VGA or higher resolution
  • 8 MB free hard disk space
  • 12 MB RAM; 16 MB recommended
  • Network adapter card recommended
Physical specifications
Characteristic HP LaserJet 4050/4050 N HP LaserJet 4050 T/4050 TN
Height 34.3 cm (13.3 inches) 38.5 mm (15.5 inches)
Width 39 cm (15.4 inches) 39 cm (15.4 inches)
Depth 61.64 cm (24.27 inches) 61.64 cm (24.27 inches)
Depth (trays/rear output bin open) 100.76 cm (39.67 inches) 100.76 cm (39.67 inches)
Weight (without print cartridge) 17.85 kg (39.27 lbs.) 20.71 kg (45.66 lbs.)
Electrical specifications
Printer State Power Consumption (average, in watts)
Printing 330
Standby 22

(default activation time,

30 minutes)
Off 0
Minimum recommended circuit capacity
Voltage Amps
100-127 Volts 8 amps
220-240 Volts 4 amps
Power requirements (acceptable line voltage)
Voltage Hz
100-127 Volts 50-60 Hz
220-240 Volts 50-60 Hz
Environmental specifications
Condition Specification
Operating Temperature 10 to 32 degrees C

50 to 90 degrees F
Relative Humidity 20% to 80%
Acoustic emissions (per ISO 9296)
Condition Specification
Printing, 17 ppm LWAd = 6.6 bels (A)
Printing, 8 ppm LWAd = 6.2 bels (A)
PowerSave LWAd = 0 bels (A)
Product Duration of Warranty
HP LaserJet 4050, 4050 N, 4050 T, 4050 TN 1 year, return to HP or Authorized Dealer
HP Print Cartridge Coverage lasts until the HP toner is depleted; at which time the warranty expires.
Safety certifications
Certification Description
Safety: IEC 950:1991+A1+A2+A3 / EN 60950:1992+A1+A2+A3+A4+A11

IEC 825-1:1993 / EN 60825-1:1994 Class 1 (Laser/LED)
EMC: CISPR 22:1993+A1 / EN 55022:1994 Class B (1)

EN 50082-1:1992

IEC 801-2:1991 / prEN 55024-2:1992 -

IEC 801-3:1984 / prEN 55024-3:1991 -

IEC 801-4:1988 / prEN 55024-4:1992 -
4 kV CD, 8 kV AD

4 V/m

0.5 kV Signal Lines

1.0 kV Power Lines
IEC 1000-3-2:1995 / EN61000-3-2:1995

IEC 1000-3-3:1994 / EN61000-3.3:1995

FCC Title 47 CFR, Part 15 Class B (2)) / ICES-003, Issue 2 / VCCI-2 (1))

AS / NZS 3548:1992 / CISPR 22:1993 Class B (1))
Supplementary Information:

The product herewith complies with the requirements of the following Directives and carries the CE-marking accordingly:

the EMC directive 89/336/EEC

the Low-Voltage Directive 73/23/EEC

[1] The product was tested in a typical configuration with Hewlett-Packard Personal Computer Systems.

[2] This Device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference, and this device must accept any interference received, including interference that may cause undesired operation.



Need Sevice or repair
Michigan Printer Repair can help.
Service Macomb Oakland and Wayne Counties Michigan


Need a fuser or Maintenance kit installed if your local Michigan Printer service can help
hp laserjet 4000 and hp laserjet 4050 printers are required at 200,000 pages to replace the fuser and rollers
sometimes fusers can wear early due to paper stock and envelopes 
Part# C4118-67909 and C4118-69001 
Fuser Part# RG5-2661 hp laserjet 4000 4050 fuser


Instructions for replacing the feed/separation rollers
Feed and Separation rollers share the same part number. Two are used for each tray, one for feeding, and one for separating.
  1. Turn off the printer.
  2. Unplug the power cable.
  3. Remove the paper tray(s) from the printer.
  4. Inspect the feed roller (located in the printer) and verify if it is correctly seated, and locked firmly in place, replacing if damaged. To remove the feed/separation roller, pinch the release at the left side of the roller and slide it off the shaft. (Figure 10)
    Figure 10: Feed roller
  5. Inspect the separation roller (Release the latch and lift the cover inside the tray.
  6. Replace the separation roller and verify that it is positioned correctly and locked in place.
  7. Test print to see if the roller replacement resolved the paper jams. If not, continue with the repair steps.
  8. Print a test page to see if the roller replacement resolved the media feed error.