Troubleshooting Guide

VELOC_DCS_LV or VELOA_DCS_LV is dead.

ALERT! Does the panel look like this:

VELO_DCS_TOP_DEAD.JPG VELO_DCS_LV_DEAD.JPG

Solution Restart the FSM.

Click here for instructions on how to restart the FSM.

VELOA_DCS_LV and VELOC_DCS_LV are in ERROR

ALERT! Does the VELOA_DCS_LV panel look like this:

VELOA_DCS_LV_ERROR.PNG

ALERT! Does the VELOA_DCS_LV_PS panel look like this:

VELOA_DCS_LV_PS_SERVICE_OFF.PNG

Solution Turn the service power is on.

Click here for instructions on how to turn on the service power.

VELOC_DCS_LV_EB** is in ERROR.

ALERT! Open up the Top panel for the power supply board. Does it look like this?

VELOC_DCS_LV_EB00_INTERLOCK_ALL_CHANNELS.PNG

Solution Check interlock on temperature board.

Click here for instructions on how to clear an interlock.

Int Fail LED is on on 48V supply.

ALERT! Check 380V supply is on at the back of the racks D3E06 or D3E05 in D3

Solution Turn on the mains supply on back of rack.

Don't see your problem?

ALERT! If all hope is gone, call the expert. ALERT!

-- MarkTobin - 07 Aug 2008

Topic attachments
I Attachment History Action Size Date Who Comment
JPEGjpg VELO_DCS_LV_DEAD.JPG r1 manage 103.6 K 2008-04-02 - 12:35 MarkTobin  
JPEGjpg VELO_DCS_TOP_DEAD.JPG r1 manage 31.9 K 2008-04-02 - 15:50 MarkTobin  
Edit | Attach | Watch | Print version | History: r7 < r6 < r5 < r4 < r3 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r7 - 2008-08-08 - MarkTobin
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    LHCb All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback