Circuit Board Replacement
7-18 72A-1589 Rev. C 02/01
D
DD
D
R
RR
R
A
AA
A
F
FF
F
T
TT
T
3
33
3
/
//
/
5
55
5
/
//
/0
00
0
1
11
1
6. Disconnect any circuit board ribbon cables required to perform the
replacement.
7. Unscrew the captive fasteners on the circuit board.
8. Firmly grasp the defective board and pull it straight up.
9. Place the new board firmly in the slot and make sure it is squarely
seated.
10. Re-attach ribbon cables if necessary.
See Table 7.2 to verify the placement of all cables.
11. Replace the capture rail.
12. Attach the power cord and turn the instrument on.
If the new board is a current or a voltage amplifier, verify that the
healthy status indicator light on the left side of the board is on.
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