YOKOGAWA UT350, Instruction Manual

Page: 53 / 82

<Toc> <4. Troubleshooting and Maintenance>
4-7
IM 05D01D02-41E
4.2.5 Replacing Control Output Relays
This subsection describes how to replace the control output relays.
The replacement must be performed by an engineer qualified for the work.
CAUTION
Always turn off the power before starting the work in order to avoid electric shock.
Do not pull out the internal unit for any other purpose other than to replace the control
output relays.
1.
Insert a flat-blade screwdriver (tip width of 6 mm is recommended) into the opening with
the tip in parallel with the front panel, and then turn the screwdriver gently. Take this
procedure to four openings 1, 2, 3 and 4 (see the figure below) on the upper and lower
parts of the bezel, in order.
The bezel slightly moves forward from the housing.
1
2
4
3
2.
Push up the center of the bottom gasket of bezel by a finger to release the latch.
Center of the bottom gasket
Panel
View from the bottom
Latch (invisible in the panel)
1st Edition : May 31,2000-00