Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 210)

IM 11M12D01-01E 11-16
11.7 Replacing Limited Life Components
The following components have limited life time. It is recommended that these compo-
nents be replaced at an approximate interval of 5 years.
1) LCD panel
2) Switching power supply, 2 types (located on the left side of the frame, not visible
from outside.)
For replacement of these components, contact our service office. When the control card
or basic power supply unit breaks down, also contact our service office for repair.
.