[Shimode-san, Enomoto]
(log on work on Jul 27&31)

= Summary = 
We repaired a Common Mode Servo (S1605812) by replacing a latch IC on Common Mode Servo Board, named U69. Now the servo works properly

= Detail =
- I was told by Doi-san that one switch of the common boost part was not working, and then last week I identified that a latch IC related to the switch was actually broken.
- So on Jul 27, Shimode-san and I removed the broken IC with U-shaped soldering iron and low-melting-point solder.
- As a new latch IC arrived here today, I soldered it on the board, supervised by Shimode-san (see the attached picture).
- Then we tested the behavior of the servo circuit, and confirmed that it worked well.