>>> 'cssem' problem from phillip -- Fri Feb 16 09:53:58 1990 <<<

Paul Nelson filled the ln2 dewar for this machine (#3)

>>> 'cssem' problem from tang -- Wed Mar 21 19:56:56 1990 <<<

After roughing down to acceptable pressure, I crossed over to
ion pump and cryo pump. However, the cryo gate refused to open,
although the ion pump alone brought the pressure down to 10E-6.

Although the pressure was good, I decided not to continue until 
the problem is identified. My sample is still in the chamber.

I've HV conditioned and flashed the tip, even I've not opened the
gun isolation at all. Also, I've filled LN trap.

>>> 'cssem' problem from rnorman -- Thu Mar 22 07:13:09 1990 <<<

Problem: The Cryo LN2 valve will not open after roughing out.

Cause: If the pressure in the cryo chamber it too high the
       valve will not open.

Solution: To get the Cryo valve open:  Try filling  the 
          cryo trap and wait a couple minutes.  Tang
          see me concerning this problem.  The cssem is up.

>>> 'cssem' problem from tom -- Wed May  9 11:35:21 1990 <<<

System overloads at 20 microamps. Should be 35 or 40.

>>> 'cssem' fix from rnorman -- Wed May  9 13:43:53 1990 <<<

Problem: System overloads at 20 microamps on the emission.

Solution: I checked out the emission and for me it overloaded at
         40 microamps which is normal.  An intermittent overload at
         20 microamps may be an indication that the 801 board is failing.
         We will keep our eye on this problem.  The cssem is up.
