T M 9 - 4 9 3 1 - 3 8 1 - 1 4 & P - 2
FRAME 15
Remove Variable Resistor Knob:
1.
2.
3.
NOTE
l
To remove a variable resistor knob, do frame 15; to
remove a switch knobs do frame 16; to remove a control
dial, do frame 17.
l
Use this frame to remove any of seven potentiometer
knobs:
BRIGHTNESS R1
SYMBOLS
R5
C O N T R A S T R 2
RETICLE
R6
S E N S I T I V I T Y R3
RETICLE BRIGHTNESS R10
C O N T R A S T R 5
RETICLE BRIGHTNESS variable resistor R10 knob (1) is
shown.
Turn knob (1) fulIy counterclockwise.
Unscrew but do not take out two set screws (2) with 5/64-inch key. Take knob (1)
off post (3).
Look at knob (1) for cracks, chips, or missing set screws (2). If bad. turn in knob (1).
If OK, set aside for later use, do follow-on maintenance, and TASK 8 ENDS HERE.
Follow-on Maintenance:
NOTE: To install variable resistor knob, refer to task 22.
GO TO FRAME 16
2-54
Volume IV
Para. 2-6, Task 8
