Selco Genesis 240 TLH, Repair Manual

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Further explanations of the above:
• GREEN LED: This LED lights if +5Vdc is present on card
15.14.254 .
Therefore,
if the machine is connected to the mains
and if the master switch is closed
and if the power circuits of the command and control
circuits are operating
then the green LED is on
Vice versa if the green LED is off
then either the machine is not connected
correctly to the power mains
or the master switch is open
or the power circuits of the command and
control circuits are not operating
116 Description of diagnostic indications
6) DESCRIPTION OF DIAGNOSTIC INDICATIONS.
6.1)
Diagnostic indications external
G 240 (FP104) ( see fig. n°31 ) :
The G 240 has two leds on the front panel with diagnostic
functions:
FIG. 31
Position
L1
L2
Colour
GREEN
YELLOW
Status under
normal
conditions
ON
OFF
Meaning
Machine powe-
red and master
switch closed
Protection devi-
ce NOT active
• YELLOW led: this led is off when the machine is operating
normally. If it comes on, it may indicate overtemperature of
the output rectifier circuit, the inverter or the levelling induc-
tance with consequent halting of current delivery by the
machine. Alternatively it can indicate cut-in of the overvolta-
ge or undervoltage protection (with consequent halting of
current delivery).
Therefore if the LED is on
then either the machine has exceeded work
cycle limits
or the fan is not operating
or air flow is obstructed from the outside
or the line voltage has exceeded the
permitted limits