281 T / 281 W
Ultima modifica/Last Update: 18/03/2008 Rev0 pagina 16 di
17
EXPLANATION
Input bridge rectifier on the Power Board 0035.
To check the Input bridge rectifier , carry out the following
measurements with a diode tester:
Should there be a short circuit on one of these measure-
ments, the input bridge rectifier must be replaced.
To check the inverter, carry out the following measure-
ments with a diode tester:
Should there be a short-circuit on one of these measure-
ments or an “OL” instead of a numeric value, the power
board must be replaced.
Use the tester to measure the pins indicated in the
enlarged picture – the values obtained must always be
“OL” (on all four pairs of pins).
Faston
Probe
Faston
Probe
Measure
+
Red
-
Black
“OL”
-
Red
+
Black
0.7 ca.
P
IC
T
U
R
E
3
+
-
Red Probe
Black Probe
Measure
A
C
0.4
C
A
“OL”
A
B
“OL”
C
B
“OL”
B
A
0.4
B
C
0.8
P
IC
T
U
R
E
4
A
B
A
C
B
C
Red
Black