Tektronix 213 DMM - Page 46

Maintenance-213 Service
WHITE SPONGE
SPACERS(2) \
ATTACHED TO
BACK OF
SHIELD
POTENTIOMETER
INSULATOR
BUSHINGS (6)
CAM
SWITCH
SHIELDS
SIDE PANEL
____ ATTACHING
/ ~~ SCREWS
/' \
//'
CAM SWITCH
HOLD-DOWN
SCREWS
(4 ON EACH
SWITCH)
1481-2
Figure 4-6. Attenuator and Function Board disassembly.
4. Remove the PWR (BTRY) LED assembly by gently pull-
ing it out of its side-panel hole (see the Exploded View draw-
ing in the Mechanical Parts List section).
SIDE PANEL REPLACEMENT. Replace the side panel in
the reverse order of removal. The pushbutton switch knobs
can be removed by pulling them off, which will make instal-
lation of the side panel easier. Be sure that the slide switch
covers and potentiometer insulator bushings are installed
before installing the board assembly into the side panel.
Also, insure that the LED is installed in the side panel and
its lead is properly placed in the Attenuator Board cam
switch shield cut-out.
4-8
ATTENUATOR BOARD REMOVAL. To remove the At-
tenuator Board, perform the Removal steps for the side
panel, then proceed as follows (see Figure 4-6):
1. Gently pull the Attenuator and Function Boards straight
apart (retained only by the tight fit of the terminal pins).
2. Remove the mylar insulating strip (be carefu I not to lose
the small white sponge spacers).
Disassembly. At this point, disassembly instructions are li-
mited to removal of the cam switch shields, which is done
by removing their respective hold-down screws. Cam switch
disassembly is covered under Parts Replacement.
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