8.3.5 Troubleshooting
Nº Alarm Code Description Countermeasure
1 D7 is always OFF
No LED is ickering on PCB and 7 seg-
ments are OFF
1 Ensure that 230 are supplied to Power Source.
2 Ensure that +5V DC is supplied to K3.
NOTE
Power source output DC signal has a rotary switch that must
be correctly set to get +5V DC.
D7 must be in ON.
2
D4 & D11 are not
ickering
There is no H-LINK communication
D4 neither D11 are not ickering.
→ See line Nº1, countermeasure 1.
8 Control support devices
PC-A1IO
TCGB0106 rev.0 - 12/2014
730
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