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Chapter 13 Routine maintenance and fault-finding
Page 13.3
Has
the fuse
in the 795x
blown
?
Is the
security LED
on the 795x
lit
?
Is the
power to
the 795x
ON
?
YES
YES
795x's Connector/
Power Supply Board
is probably faulty
NO
NO
NO
Is the
795x's supply
voltage within
spec
?
Turn the power ON
Replace the 795x's
Connector/Power
Supply Board
YES
The 795x's Display
Module is probably
faulty
Replace the 795x's
Display Module
The display is blank
Adjust the voltage so
that it is within spec
NO
PROBLEM:
Replace the fuse by
one of the correct
rating
YES
Figure 12.2: Fault-finding chart 2: The display is blank