Tektronix T922 - Page 76

Service Information-T921/T922/T922R
REMOVE
2
SCREWS
TO
REMOVE
HANDLE
SLIDE VERTICAL MODULE
TO REAR AND LIFT TO

REMOVE ONE SCREW AND
REMOVE

THREE 3/16 INCH POSTS .
Fig . 5-10 . T922R vertical module replacement .
2 . Make note of their
location to aid in reassembly, then
disconnect :
P2 from
horizontal module
P2412 from buffer
board
P2103 from EXT TRIG
switch board (3 wire connec-
tor)
Thetwo horizontal
deflection leads
3 .
Remove one screw and three
3/16-inch posts (see
Fig . 5-11) .
Fig . 5-11 . T922R horizontal
module replacement .
2 . Remove
the knob/shafts and shafts from
the follow-
ing controls
:
INTENSITY

BEAM FIND
FOCUS
POWER
WARNING
To avoid a
shock hazard, be certain you have
disconnected the power
cord before continuing .
3 . Remove the four screws from the
high-voltage shield
and lift the
shield away from the instrument .
4 . Make note of the line cord color
code and position, to
aid in reassembly . Then, unsolder the
line cord conduc-
tors from the interface board .
5 . Push the clear plastic POWER
light-pipe out the front
of the instrument to remove .
WARNING
4 . Lift horizontal
module away from instrument
to

The crt
anode and the high voltage multiplier will
remove .

hold a charge
after you turn off the instrument . To
prevent a shock
hazard, use only one hand to
remove the anode lead . Then,
touch the anode lead
to one
of the posts to discharge the crt (see Fig .
5-
12) . Also
take a short piece of insulated wire and
Interface
Board Replacement

short the outpput
of the high-voltage multiplier to
the chassis (see Fig .
5-12) .
1 .
Remove four screws from the left
side rail and remove
the side rail .

6 . Pull the crt anode lead forward to remove
.
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