HP DesignJet Printers Service Manual (EN)

Removal and Installation 8 Screw Types 8-4 Left Hand Cover 8-5 Right Hand Cover 8-7 Front Panel 8-9 Window and Top Cover 8-10 Media Deflectors 8-11 Left End Roll-Feed 8-13 Right End Roll-Feed 8-15 Back Platen 8-17 Media Sensor 8-19 Formatter 8-20 LAN Card 8-21 Spittoon 8-23 Electronics Module 8-24 Power Supply 8-27 Scan-Axis Motor Assembly 8-29 Cutter Assembly 8-32 Left Encoder Holder 8-33 Cutter Bushing 8-35 Cutter Guide Bracket 8-36 Drive Roller Encoder Sensor 8-38 Trailing Cable 8-40 Ink Supply Station 8-48 Interconnect PCA 8-50 Service Station and Aerosol Fan 8-52 Cutter Guide 8-55 Print Platen 8-56 Service Station Holder 8-57 Interconnect Cable 8-59 Ink Supply Tubes 8-60 Vacuum Fan 8-64 Pinch-Arm 8-66 Pinch-Arm Mechanism 8-67 Pinch-Arm Lever 8-69 Pinch-Arm Sensor 8-71 Fork Idler, Tensioner and Idler Pulley 8-74 Encoder Strip 8-76 Carriage Assembly (Including Belt) 8-78 Paper-Axis Motor 8-84 Drive Roller 8-86 Gear Assemblies 8-92 8-1 HP DesignJets 500 and 800 Series Printers Service Manual

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Removal and Installation Introduction This chapter is a step by step guide to the removal and installation of the key components in the printer. You may find it useful to tick off the steps as they are performed. Use the illustration at each procedure to identify the parts referred to in the text. The procedures appear in order of removal. So the whole machine can be stripped down by starting at the beginning of this chapter and working through the subsequent procedures. NOTE Before using this chapter to remove and install a new component, always make sure that you have performed the relevant service test from Chapter 4. If the test passes you will not need to replace the component.

Safety Precautions Review WARNING and CAUTION symbols and instructions before you service the printer. Follow these warnings and cautions for your protection and to avoid damaging the printer. WARNING Serious shock hazard leading to death or injury may result if you do not take the following precautions: Ensure that the ac power outlet (mains) has a protective earth (ground) terminal. Switch the plotter off, and disconnect it from the power source prior to performing any maintenance. Prevent water or other liquids from running onto electrical components or circuits, or through openings in the module. 8-2 HP DesignJets 500 and 800 Series Printers Service Manual

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Removal and Installation Electrostatic Discharge (ESD) Precautions To prevent damage to the Printer circuits from high-voltage electrostatic discharge (ESD): 1. Do not wear clothing that is subject to static build-up. 2. Do not handle integrated circuits (ICs) in carpeted areas. 3. Do not remove an IC or a printed circuit assembly (PCA) from its conductive foam pad or conductive packaging until you are ready to install it. 4. Ground (earth) your body while disassembling and working on the Printer. 5. After removing a cover from the Printer, attach an earthing (ground) lead between the PCA common and earth ground.

Touch all tools to earth ground to remove static charges before using them on the Printer. 6. After removing any PCA from the Printer, place it on a conductive foam pad or into its conductive packaging to prevent ESD damage to any ICs on the PCA. Required Tools The following tools are required to disassemble and repair the Printer. Long Torx Screwdriver with the indicated attachments Nut driver with the indicated attachments Small flat-blade screwdriver 8-3 HP DesignJets 500 and 800 Series Printers Service Manual

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Removal and Installation Screw Types 8-4 HP DesignJets 500 and 800 Series Printers Service Manual Type Torx Length (mm) Head Type Thread Type Part Number A T-20 17 Pan Taptite 0515-1743 B T-10 8.0 Pan Taptite 0515-2200 C T-20 10 Pan Taptite 0515-2282 D T-10 17.5 Pan Washer Plastite 0515-2675 E T-15 12.7 Pan Plastite 0624-0769 F T-15 20 Pan Plastite 0624-0771 G T-8 12.7 Pan Plastite 0624-0768 H T-20 35 Pan Taptite 0515-2521 I T-15 9.5 Pan Plastite 0515-2981 J T-10 8 Pan Machined 0515-2246

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