[Fukunaga, Miyamoto]

We repaired the Test Mass(TM) thermometer at ETMX.

• we was not able to monitor the temperature of the (TM) stage at last cooling test.
• We measured the resistance of the TM thermometer. (TM thermometer pin assign is here.)
  Pin3-4 : ~250 ohm, and pin8-9 : 0.7 ohm

• We doubted the electric short of somewhere, because, usually the resistance of the Si thermometer is ~7.5M ohm. (We measured the resistance of another healthy thermometer.)
• Previously we experienced similar thing, and at that time the electric short occurred at the Bottom Filter(BF) cable clamp.
• So first we checked around BF connector (D1). As the result this was the cable clamp issue. This electric short occurred at the cable clamp. ( picture )
• We just loosened the screw of the clamp, then tightened of it. Finally we have to confirm that we can monitor the TM temperature.

And we found that the Pin3 cable of the connector D4 has been disconnected at BF connector.
We will check tommorow about it.