Hitachi EC702MP-BB3, Operation Manual

Page: 103 / 108

103 | 108
E-Compact MP-BB3 Series
Section 7 – Preventive Maintenance
1. Overview
This section is dedicated to the necessary procedures for proper preventive, periodic, and corrective
maintenance in order to guarantee a TV transmitter that works properly and for a longer period of time.
Only trained and authorized people should be allowed to open the transmitter. The non-
compliance of this item might result in the loss of warranty.
IMPORTANT:
⇨
The life expectancy of the equipment depends on its working conditions.
⇨
Environments with controlled temperatures increase the life span of the components.
⇨
In the semester inspections, if there is a noise or an abnormal vibration in the fan located inside
the equipment, it should be replaced. This same procedure should be followed for the frontal
panel fans in the power drawers or the exciter module.
2. Preventive Maintenance
2.1. Cleaning
Initial steps
⇨
Unplug the equipment from the power outlet.
⇨
Remove the side and top covers.
⇨
Disconnect all RF cables from the rear panel.
Procedure:
1. With an air blower, remove all the accumulated dust from the inside of the equipment, in the front and
rear panels, sides, top, and bottom covers.
2. Clean the panels and the measurement instruments with a dry and soft cloth.
3. Remove the dust from the input of the air filters located in the bottom panel, side, and rear covers.
Do not allow any kind of particles or dust to get into the filter cavities.