
3-13
CCU-590/P/V1(E)
DC-DC Board
AC-DC Board
J10
J11
J9
J4
PS5
x
8
PS5
x
8
3-6-2. Replacing the DC-DC Board/AC-DC
Board
When replacing, be sure to use the specified part.
Mounted circuit board, DC-DC :
!
9-885-091-41
Mounted circuit board, AC-DC :
!
9-885-091-40
1.
Unplug the power cord from the rear panel of the
CCU-590/590P.
2.
Remove the top cover. (Refer to section 3-5. Remov-
ing the Top Cover.)
3.
Remove the power supply unit. (Refer to section 3-6.)
4.
Remove the ten screws to detach the side panel.
5.
Remove the six screws and disconnect three connec-
tors (J9, J10, J11) and remove the DC-DC board.
6.
Remove the three screws and disconnect three connec-
tors and remove the AC-DC board.
7.
After replacement of the board, reinstall the power
supply unit on the CCU-590/590P by reversing the
steps above.
8.
Connect the power cord, power on the CCU-590/590P,
and check that the unit works normally.
Side panel
K5
x
3
K5
x
3
K5
x
3
K5
x
3
K5
x
3
AC-DC board
PS5
x
8