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Further Fault
Contrast of LCD is too weak or
too strong
LCD does not display any
information, all fields are dark
Fan units with v-belt only:
Fan unit too loud
Fault Finding Instructions SDS26
Possible Reason
Contrast control is not adjusted
High electrostatic discharge
upon the display
Tension of v-belt incorrect
16.06.09
safetec
Correction
Adjust contrast intensity at the
adjustable resistor on the rear
side of indication / control
module
Switch off Smoke Detection
System shortly by quickly
pulling out Fuse F1 on power
supply module
Adjust tension of v-belt
Seite 3 von 13
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