Corrective Maintenance
CSA 803C Service Manual
6Ć35
A5 Time Base/Controller Board
A6 Calibrator Board
Removal and replacement steps are listed below. See Figures 6Ć10 and 6Ć32
for connector, screw, and index locations.
ăStep 1:ă
Place the instrument in the inverted position.
ăStep 2:ă
To remove the A6 Calibrator Board, remove connectors J1 and
J17 from the A6 Calibrator Board. Remove the Torx head screw securing
the board in place. Lift the board from J91 on the A5 Time Base/ControlĆ
ler Board. Perform this process in reverse to replace the Calibrator
Board.
ăStep 3:ă
Remove connectors J16, J29A, J30A, J32, J35, J91, Ext A, and
Presc(if Prescaler is present) from the A5 Time Base/Controller board.
Use extreme care to prevent damage to the cable center connector that
was attached to Presc. Then remove connectors J18 and J83 from the
A5 Time Base/Controller board. Note the position of the multiĆpin conĆ
nector's index triangles to ensure that the connectors can be correctly
replaced.
NOTE
ăStep 4:ă
Remove the six Torx head screws holding the board in place.
ăStep 5:ă
Remove the A5 Time Base/Controller board.
To replace the board, perform the previous steps in reverse order.
Summary of Contents for CSA 803C
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Page 33: ... 2Ć3 CAUTION ...
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Page 235: ... 6Ć99 ST1 LSB ST2 ST3 ST4 MSB ST5 Test Running ST6 Test Failed Status LEDs ...
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Page 280: ...Replaceable Parts Mechanical Parts List 10Ć20 1 2 3 4 5 6 Figure 10Ć7 ăAccessories ...