Electra DNG 100 - Page 94

13-14
TROUBLESHOOTING
SM OU12HP 2-E.2 GB
Use a digital multi meter in diode checking function
1) Connect the “V:” side of the tester to the “P1” terminal of
driver and the “COM” side of the tester to “R” and “S” of
driver, measure the diode voltage.
Voltage should be “OL” (Over Load).
2) Connect the “COM” side of the tester to the “P1” terminal
of driver and the “V:” side of the tester to “R” and “S” of
driver, measure the diode voltage.
Voltage should be 0.4~0.8VDC.
3) Connect the “COM“ side of the tester to the “N” terminal
of driver and the “V:” side of the tester to “R” and “S” of
driver, measure the diode voltage.
Voltage should be “OL” (Over Load).
4) Connect the “V:” side of the tester to the “N” terminal of
driver and the “COM” side of the tester to “R” and “S” of
driver, measure the diode voltage.
Voltage should be 0.4~0.8VDC.
5) Connect the “COM“ side of the tester to the “P” terminal
of driver and the “V:” side of the tester to “U”, “V” and
“W” of driver, measure the diode voltage.
Voltage should be 0.4~0.8VDC.
RB
S
R
P1
N
P
U
V
W
OL
0.5
RB
S
R
P1
N
P
U
V
W
RB
S
R
P1
N
P
U
V
W
OL
RB
S
R
P1
N
P
U
V
W
0.5
RB
S
R
P1
N
P
U
V
W
0.5
CONTENTS