13-14
TROUBLESHOOTING
SM CKDDCI 2-A.3 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
