HP LaserJet 4L/4ML and 4P/4MP (EN)

Combined Service Manual Back to Welcome HP DOC HP LaserJet 4L/ 4ML (C2003A/ C2015A) HP LaserJet 4P/ 4MP (C2005A/ C2040A)

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Copyright Hewlett- Packard Company 1993 Warranty WARNING The information contained in this document is subject to change without nc,tice. Electrical Shock Hazard To avoid electrical shock, use only supplied power cords and connect only to properly grounded (3-hole) wall outlets. All Rights Reserved. Repro- duction, adaptation, or ranslation without prior written pmnnssionis pro- hibited, except as allowed under the copyright laws. Hewlett-Packard makes no warranty of any kind with regard to this mate- rial, including, but not limited to, the implied warranties or merchant- ability and fitness for a particular purpose.

Hewlett-Packard shall not be liable for errors cm- tained herein or for inciden- tal or consequential damaged in connecti~m with the furnishing, per- formance, or use of this ma- terial. Publication number C2005-90988 First edition, August 1993 econd edition, March 1994 Printed in USA Hewlett-Packard Company 1311 Chinden Boulevard oise, Idaho 83714

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Conventions This manual uses the following conventions: Unless specifically stated otherwise, information applies to all four printer models (LaserJet 4L/4ML/4P/4MP), Most procedures are com- bined for all printers, except where they differ substantially. Color is used to emphasize items which are important to the material under discussion. The names of major printer parts and assemblies are Capitalized. Bold is used for emphasis, particularly in situations where italic type would be confusing. Italic type is used to indicate related documents or emphasis. COME’UTER type indicates text as seen on a computer monitor.

Di ;W.-ii’+type indicates text as seen on the printer’s 16 character LCD display panel (LaserJet 4P/4MP only). ~ indicates keys on a computer keyboard or on the printer’s control panel (LaserJet 4P/4MP only). Examples include ~ and m. ,“ Notes contain important information set off from the text. 21.JII[, !’J Caution messages alert you to the possibility of i,, damage to equipment or loss of data. WARNING! Warning messages alert you to the possibility of personal injury.

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A detailed matrix of printer features is followed by general information on the four printer models. Specifications, major assembly locations, safety and regulatory information are all included. The chapter ends with a discussion of the service and repair philosophy along with useful information on obtaining technical help. Recommendations pertaining to the physical location of the printer and consumables are followed by general print media specifications (including specifications for paper, envelopes, labels and transparencies). Chapter 3 provides the step-by-step installation and setup procedure, along with detailed information on using the Control Panel for each printer model.

Sample self tests and printer reset information are also included. Turn to this chapter for information on routine printer maintenance, including consumables and printer cleaning procedures. Paper jam procedures are also included. Here you will find the basic theory-of-operation information required to understand the various printer systems and how they function together. This chapter contains the step-by-step procedures for replacing all the printer’s field replaceable units (FRUS). Assemblies are grouped by physical location in the printer. ...

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