No fiber-optic communications; Beam Control Unit has no power on the AutoSpec - WKB48735

SYMPTOMS

• MassLynx takes a long time (several minutes) to boot
• Error message appears when MassLynx eventually starts:

• No instrument control

ENVIRONMENT

• AutoSpec Premier (P)
• AutoSpec Ultima (M)
• MassLynx

CAUSE

Fault in instrument internal fiber-optic loop communications. Beam Control Unit is off with no power.

FIX or WORKAROUND

1. Close MassLynx.
2. Lock the system into "Standby" using the front panel Instrument Status Switch.
3. Reboot the EPC and monitor boot progress by typing " PING EPC -t" into the Start/Run box.
   • A command box opens and shows the ping responses during the boot.
   • 
4. Wait up to 2 minutes until many responses show less than 1 ms to reply. (Indicates boot sequence has completed.)
5. Close the Ping window.
6. Run rioMainMenu to check the status of the instrument internal loop communications:
   • Enter "TELNET EPC" into the Start/Run box.
   • Telnet opens with a "->" prompt.
   • Enter "rmm" followed by return in the Telnet window. (All characters should be specified in lower case.)
   • The following appears:

     ***********************************
     *
     *     RIO Main Menu
     *
     ***********************************

     1. Shutdown RIO
     2. Set Menu Size
     3. Access subsystems
     4. Lock All subsystems
     5. Unlock All subsystems
     6. Start Memory-Mapped Page Poll
     7. Stop Memory-Mapped Page Poll
     999. EXIT

     choice>

   • Specify "3" into "choice" to display the units that are present on the Instrument Internal Loop communications path.
   • The following appears:

     choice> 3

     ***********************************
     *
     *     Available subsystems
     *
     ***********************************

     4. MA3481-200 Source Unit
     6. MA3606 Source Unit
     7. MA3779-200 PCI Card
     999. EXIT

     choice>

   •  The above list of three "Subsystems" confirms a failure in the internal loop communications path.
   • Specify "999" two or three times until "->" appears.
   • Close the Telnet window 

7. Remove the panel to expose the Beam Control Unit. This is located at the front of the instrument underneath the Magnet. (See the location diagram in "Additional Information".

8. Confirm that the "Standby" power switch on the front of the Beam Control Unit is illuminated.
9. If no illumination is seen, check FS1.
   • Power-off the Beam Control Unit "Standby" Power switch.  Set it to position "0".
   • Power-off the "Bench" Circuit Breaker located on the Main Distribution Unit located at the front of the instrument underneath the GC.
     • See the location diagram in "Additional Information".
   • Remove FS1 with the aid of a small coin or large slotted screwdriver.
   • Inspect the fuse for visible burning, or use a digital voltmeter.
     • Open Circuit, infinite or very high resistance, indicates a failed fuse. 
   • Replace the fuse with the identical item (1340141-S - FUSE GLASS 1.25A 20MM A/S)
   • Power-on the "Bench" circuit breaker.
   • Set the Beam Control Unit "Standby" Switch to the On, "1" position.
   • Check for illumination in the "Standby" switch. 
     • Note that the "Operate" Switch shows no illumination
     • Check the power cable for 240V AC. If no power, check the power strip located underneath Magnet that 240V AC is being supplied to it.
     • If Yes, check the fuse within the strip
     • If No, check FS3 in AC Distribution unit.
10. Restart the EPC and, as above, monitor the boot progress via "PIN EPC -t", closing the window when complete.
11. Run rioMainMenu to recheck the status of the instrument internal loop communications:
    • Specify "TELNET EPC" in the Start/Run box.
    • Telnet opens with a "->" prompt.
    • Specify "rmm" followed by return in the Telnet window. (All characters should be entered in lower case.)
    • The following appears:

      ***********************************
      *
      *     RIO Main Menu
      *
      ***********************************

      1. Shutdown RIO
      2. Set Menu Size
      3. Access subsystems
      4. Lock All subsystems
      5. Unlock All subsystems
      6. Start Memory-Mapped Page Poll
      7. Stop Memory-Mapped Page Poll
      999. EXIT

      choice>

    • Enter "3" into "choice" to check which units are present on the Instrument Internal Loop communications path.
    • The following will be displayed:

      choice> 3

      ***********************************
      *
      *     Available subsystems
      *
      ***********************************

      1. MA3445 Beam Unit
      2. MA3458 Heater Unit
      3. MA3481-201 Source Unit
      4. MA3481-200 Source Unit
      5. MA3515 Vacuum Unit
      6. MA3606 Source Unit
      7. MA3779-200 PCI Card
      999. EXIT

      choice>

    •  This list of the seven "Subsystems" present confirms good internal loop communications.
    • Specify "999" two or three times until the "->" appears.
    • Close the Telnet window.
12. Start MassLynx, which will boot normally.
13. Refit any removed instrument panels.
14. In the tuning window, check the Solenoid Slit Settings if applicable. These may have reverted to default values. Re-specify the values from a saved copy.
15. Restart the Magnet.
16. The system is now fully operational. The Instrument Status switch may be set to Operate.

ADDITIONAL INFORMATION