HP LaserJet 4L Service Manual

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Printer Dimensions – 1-4
Performance Specifications -1-4
Environmental Specifications – 1-5
Electrical Specifications – 1-5
Related Documentation – 1-19
Current Requirements (Amps) – 2-2
Printer Operating Dimensions – 2-3
Toner Cartridge Environmental Conditions – 2-4
Supported Media Sizes – 2-!3
Selected Paper Specifications – 2-11
Envelope Speciilcations–212
Adhesive Label Specifications – 2-14
Transparency Specifications – 2-15
Front Panel Button Usage --3-11
Menu of Resets (LaserJet 4“P/4MP) – 3-27
Life Expectancy of Consumi~bles – 4-3
Cleaning Printer Components – 4-6
Solenoids – 5-35
Photosensors – 5-35
Print Period Descriptions – 5-40
Paper Out Error -7-7
Paper Jam Error – 7-8
Door Open Error – 7-9
Memory Error – 7-10
Manual Feed – 7-10
Service Error -7-11
Fuser Error --7-12
Fuser Checks – 7-12
Beam Error – 7-13
Tbl 7-10 Scanner Error --7-13
Tbl 7-11 WROM Error – 7-14
Tbl 7-12 Engine Error – 7-15
Tbl ‘7-13 Main Motor Error – 7-15
Tbl 7-14 Fan Error – 7-16
Tbl 7-15 Formatter Error – 7-16
Tbl 7-16 NVRAM Error – 7-17
Tbl 7-17 Blank Display – 7-17
Tbl 7-18 Blank (White) Page – 7-24
Tbl 7-19 Black Page -7-25
Tbl 7-20 Faded Print -7-26
Tbl 7-21 Vertical White Stripes – 7-27
Tbl 7-22 Vertical Black I.ines – 7-28
Tbl 7-23 Horizontal Black Lines – 7-28
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HP LaserJet 4L Specifications

General

Print Technology	Laser
Print Resolution	600 x 600 dpi
Print Speed	4 ppm
Input Capacity	100 sheets
Connectivity	Parallel
Processor	Motorola 68000
Standard Memory	1 MB
Maximum Memory	5 MB
Printer Language	PCL 4
Duty Cycle	12, 000 pages per month
Paper Sizes	Letter, Legal, A4