HP Indigo W7250 Charge Roller -- CA393-00080 Rev 07

HP Indigo W7250 Manual

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  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 1
    service actions Scope HP Indigo 7000 Digital Press, HP Indigo 7500 Digital Press, HP Indigo 7600 Digital Press, HP Indigo 7800 Digital Press, HP Indigo WS6000 Digital Press, HP Indigo WS6000p Digital Press, HP Indigo WS6600 Digital Press, HP Indigo WS6800 Digital Press, HP Indigo W7200 Digital
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 2
    Table of contents 1 Procedures ...1 Troubleshooting customer-level issues...1 Troubleshooting the high voltage connection failure...1 Troubleshooting dirt accumulation on the roller...4 Replacing the solenoids ...6 Appendix A Revision history and confidentiality notice ...10 Revision history ...10
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 3
    Roller Operating Principles and Maintenance Guide (CA393-03440). Troubleshooting the high voltage connection failure It explains how to troubleshoot the high voltage connection failure. Overview The charge roller charges the PIP to -900 V. Before every print, the electrometer determines whether or
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 4
    During printing, check either a high voltage contact failure or charge roller engage problem. NOTE: If the balancing roller it is not functioning voltage contacts Check the charge roller high voltage contacts. 1. Use a digital voltmeter to check the continuity between the high voltage pins and
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 5
    2. Make sure that the high voltage pins are not broken or bent. Figure 1-2 Bent pin 3. Make sure that the high voltage plugs are connected correctly. (In the figure below, one of the high voltage plugs is next to the high voltage pin but not on it.) Figure 1-3 High voltage plugs 1 High voltage
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 6
    housing 1 Guide rails 2 Front position pins 7. Verify that the charge roller housing rests completely on the three position pins on the press wall. 8. Make sure that the charge roller housing holding screws allow the charge roller to move to the fully engaged position. Troubleshooting dirt
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 7
    Minimizing the sticky residue and dirt Minimize the sticky residue and dirt. Under normal working conditions, the sticky residue and dirt will impact the print quality only after 100 - 150 K impressions. If you have to clean the rollers more often than every 100 - 150 K impressions, do the following
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 8
    operator level actions and are described elsewhere. Removing the solenoids Removal of the solenoids. 1. Remove the charge roller from the press. Figure 1-7 Charge roller 1 Front solenoid 2 Rubber roller 3 Rear solenoid 2. Remove the rubber roller from the charge roller. Replacing the rear
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 9
    2. Using a small Phillips screwdriver, remove the three screws attached to the solenoid connector assembly into position. 6. Connect the solenoid connector. 7. Install the solenoid connector cover. Use the three Phillips screws to fasten it to the charge roller assembly. Replacing the rear solenoid
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 10
    on the front solenoid extraction clip. Remove the spring from under the clip. Figure 1-12 Allen screw on the front solenoid extraction clip 2. Using a Phillips screwdriver, remove screw that attaches the solenoid connector cover to the charge roller assembly. Figure 1-13 Phillips screw fastening the
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 11
    assembly. 6. Remove the solenoid assembly. Figure 1-16 Solenoid assembly 7. Install the new solenoid assembly into position. Fasten it to the charge roller assembly using the three Allen screws, washers and spring washers. 8. Connect the solenoid connector. 9. Install the solenoid connector cover
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 12
    : HP Indigo 7500 Digital Press, HP Indigo WS6000p Digital Press, HP Indigo WS6600 Digital Press CA393-00080 Rev04 Added the following press to scope: HP Indigo 7600 Digital Press CA393-00080 Rev05 Added the troubleshooting sections Added the following press to scope: HP Indigo 7250 Digital Press
  • HP Indigo W7250 | Charge Roller -- CA393-00080 Rev 07 - Page 13
    © Copyright 2015 HP Development Company, L.P. All rights reserved. Confidentiality notice 11
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Charge Roller
Document details
Purpose
Describes charge roller service actions
Scope
HP Indigo 7000 Digital Press, HP Indigo 7500 Digital Press, HP Indigo 7600 Digital Press,
HP Indigo 7800 Digital Press, HP Indigo WS6000 Digital Press, HP Indigo WS6000p Digital Press,
HP Indigo WS6600 Digital Press, HP Indigo WS6800 Digital Press, HP Indigo W7200 Digital Press,
HP Indigo W7250 Digital Press, HP Indigo 6r Digital Press, HP Indigo 7r Digital Press.
Document number
CA393-00080
Revision number
07
Date
17 December 2015
Security level
HP Confidential
The information contained in this document is accurate at the date of release.
Check CE Suitcase for the most recent version of this document.
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