BERTHOLD TECHNOLOGIES LB4710-050, Руководство пользователя, Страница: 79 / 227

Chapter 9 Maintenance
Mini-Switch LB 471
79
Chapter 9. Maintenance
9.1
Malfunctions
Danger!
Installation work on the electrical equipment may be carried out
only in the idle state.
The components concerned have to be turned off first and have to
be secured against restoring power.
The respective VDE and Ex-regulations have to be observed.
Malfunction Cause Remedy
System does not
work or no reading
on display Power supply faulty Check power supply
Fuse on power
supply unit faulty. Check fuse, replace it,
if necessary
Fuse on evaluation
unit faulty Check fuse on evalua-
tion unit, replace it, if
necessary
9.2
Replacing Fuses
In case of blown fuses you have to investigate the cause first. If
you suspect a fault on the board, you have to return if for repair or
replace it.
1
Turn evaluation unit off and disconnect it from mains.
2
Pull evaluation unit out of rack or cassette.
3
Check fuses and replace them, if necessary.
Warning!