Operating instructions

REMOVE READOUT BOARD AS FOLLOWS :
1 .
Note index of multi-pin connector attached
to board and disconnectcable .
2 . Loosen set screw on variable switch
assembly .
3 . Remove VARIABLE (CAL IN)
TIME/DIV knob and attached shaft out the front of
the instrument .
4 . Remove
the 8 securing screws from board .
5 . Lift board away
from cam switch assembly .
TO REPLACE READOUT
BOARD, REVERSE THE ORDER OF REMOVAL .
Fig .
4-7 . Readout board removalprocedure .
4 . Note color of multi-pin connectors (see
Figure 4-4 for

7 . Remove Interface circuit board
through rear of
identification) and
P
numbers to
which each connect . Dis-

instrument .
connect all multi-pin connectors from board .
To install the Interface circuit board :
5 . Remove
4
screws that
secure gray plastic rear panel to
instrument
frame .

1 .

Guide
TIME/DIV
switch shaft
through hole in front-
panel .
6 . Remove 6 screws
that secure perimeter of board to in-

2 . Install 6 screws that secure perimeter of
board
to
in-
strument frame .
strument frame .