Ohmeda 3000 - Control Board and Power Supply Board Replacement

5/Disassembly and Repair
B. Control Board and Power Supply
Board Replacement
(Figure 5-7)
CAUTION: Take static precautions for these
procedures.
Control Board Removal
1. Disconnect the four connectors (J1, J5, J6, and
J7) from the control hoard. Disengage the locking
tab on the socket by inserting a small screwd-
river between the tab and the rear of the plug.
2. Use a 5/16 inch socket to remove the six mount-
ing nuts for the control board.
3. Remove the control board.
Power Supply Board Removal
Note: Remove the Control Board first.
1. Disconnect connectors J11, J12, J13, J14, J15,
and J17 from the power supply board. For con-
nectors J11 and J12, disengage the locking tab
on the socket by inserting a small screwdriver
between the tab and the rear of the plug. For
connectors J13, J14, J15, and J17, squeeze the
locking tabs on the rear of the plug to disengage
the lock mechanism. J12 is a short connector
which connects to J5 on the control board.
2.
3.
Use a 5/16 inch socket to remove the six mount-
ing nuts for the power supply board.
Remove the power supply board.
Power Supply Board Installation
1.
Place the new power supply board in position on
the síx mounting posts.
Replace the six mounting nuts for the power sup-
ply board.
Reconnect connectors J12, J13, J14, J15, and J17
to the power supply board, J12 is a short connec-
tor which connects to J5 on the control board.
Control Board Installation
1 Place the new control board in position on the six
mounting posts.
Replace the six mounting nuts for the control
board.
Reconnect the four connectors (J1, J5, J6, and J7)
to the control board.
Perform the Electrical Safety Procedures in Sec-
tion 4 and the Checkout Procedures in Section 3.