Toshiba LC531 Series Instruction Manual page 132

Chapter 8 Maintenance and Inspection
112
6F8C1388
• Clean the ventilation holes periodically.
• Check that the terminal screws of input power supply, external signals, and
transmission signals are not loosened. If any of these screws are loosened,
tighten them again.
Before checking the LC53* main unit or
WARNING
cables directly, make sure that the input
power supply (the switch of the receiving
distribution unit) is turned off.
Otherwise, it may cause an electric shock.
Mandatory