
TelePole WR/ Operating & Maintenance Manual Page 42
8.15. Display Back Light doesn’t turn ON
Replace touch panel
Replace CPU card
Press LIGHT pushbutton
during 2 sec.
Check U9/7 or J3/6
Display Back light doesn’t
turn
on
Yes
O.K.
O.K.
O.K.
O.K.
Check 5V on U3/6
Replace Q1 & Q6
Check 8V ±1V on T1 pin input
Replace T1
Check 80V AC on T1 pin out
Replace electro
Luminescence
O.K.
END
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