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Suggestions: Check the
Scan pulse waveform at
TPSC1 of the SC-Board.
(Use TPSS1 of the SS-
board to trigger the
oscilloscope.) Proceed to
check the power sources at
connector SS11, SS12 and
SS33.
Verify that the clock and
serial data lines from the D-
board are present at
connector SS33.
Note: It is easier to
measure input levels at
connector C33 of the C3-
Board instead of connector SS33.