Page 1 LASERJET ENTERPRISE 600 M601, M602, AND M603 SERIES PRINTER Service Manual. Page 3 HP Laser Jet Enterprise 600 M601, M602, and M603 Series Printer Service Manual. Page 4 Copyright and License Trademark Credits © 2011 Copyright Hewlett- Packard ENERGY STAR and the ENERGY STAR mark Development Company, L. P. are registered U. S. marks. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Page 5: Conventions Used In This Guide Conventions used in this guide TIP: Tips provide helpful hints or shortcuts. NOTE: Notes provide important information to explain a concept or to complete a task. CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging the product. Page 6 Conventions used in this guide ENWW. Page 7: Table Of Contents Table of contents 1 Theory of operation.1 Basic operation.2 Major print systems.2 Internal components.3 Operating sequence.7 Formatter system.8 Sleep mode.8 Input/output.8 USB.8 Embedded print server. Page 8: Table Of Contents Image-formation process.21 Block 1: Latent image formation.23 Step 1: Primary charging.23 Step 2: Laser-beam exposure.23 Block 2: Developing. 24 Step 3: Developing.24 Block 3: Transfer.25 Step 4: Transfer. 25 Step 5: Separation. Page 9: Table Of Contents Jam detection ( EF).51 Duplexer.53 Motor and fan control ( DP).54 Failure detection ( DP).55 Reverse-and-re-pickup operation ( DP). 55 Side registration adjustment operation ( DP).56 Jam detection ( DP).58 2 Removal and replacement.59 Introduction. Page 10: Table Of Contents Top-accessory cover.88 Envelope feed accessory covers.89 Duplex accessory or cover.
NOTE: These rollers for the manual feed tray are NOT included in the standard maintenance kit - they rarely wear out. We are posting these instructions for customers who decide to purchase the rollers separately. If you'd like to order these rollers you can call us @ or click on the link below. If you did not purchase the rollers separately, skip this installation step. Removing the rollers. Open Tray 1 (flips down). If you have an envelope feeder installed, remove it. If this thin plastic cover is installed (labeled 4, shown below remove the cover from the envelope feeder slot by pulling it firmly out. Remove the screw shown below. Next you will be removing this small plastic piece circled in red in the two following pictures. You can grab this piece and slide it free to the left. Next you will remove the plastic cover shown below (gently pry it free which is hiding the manual feed rollers. Slide the two grey/white rollers off their shafts. On the left side of the manual feed area, you will find a rotating black plastic door (circled in red below) - rotate this door downwards, so that you can access the blue roller behind it. The next series of pictures show how to rotate the door. As you hold the black door open, pull this blue roller free from its shaft. As you continue holding the black door open, install the new blue roller. Orient the gap on the end of the roller with the notch in the white gear so that the blue roller slides and locks properly onto the shaft. Next install the new white/grey rollers; for the second of these rollers, you will need to line up the gap on the end of the roller with the notch in the white gear so that the grey roller slides up to the notch of the gear. Re-install the black plastic cover which sits over the grey/white rollers. As you install the cover, make sure it is oriented so that the hole (pointed to below).
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