162
CONTROL UNIT
10a
10a-3-2. FET module comp. - inspection and replacement
N
P
W
V
U
D1-U,V,W
D2-W
D2-V
D2-U
G1-U
G1-V
G1-W
G2-U
G2-V
G2-W
461S005
l
Inspection of "FET module (1)
NOTE
Capacitors are replaced every year.
"Positive test" lead at
"Negative test" lead at
1
P(Drain1)
G1-(U)
2
P(Drain1)
G1-(V)
3
P(Drain1)
G1-(W)
4
U(D2-U)
G2-(U)
5
V(D2-V)
G2-(V)
6
W(D2-W)
G2-(W)
*Even both plus (+) and minus (-) are acceptable.
Do the continuity checking.
P
N
G1
G1
G2
G2
U
V
W
D1
D2
D1
D2
G1
G2
D1
D2
461S006
l
[FET module] Circuit chart
1. Perform a continuity test at the test points 1 - 6 in the
following table by using a digital tester.
(Use the resistance range with beep function. If you
use the diode checking range, you may not able to get
the correct result.)
If continuity is shown at any test points, the tester will
beep. Then, replace the module (Travel or Hydraulic )
to the new one.
If any defects are found on the travel FET module,
both of two modules (for right and left) should be
replaced at the same time.
Replace the set of all nine capacitors at the same time
if the module is replaced.
https://www.forkliftpdfmanuals.com/
Содержание FB10P
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