TM 9-1240-216-34
POOR FOCUS (ONE OR BOTH EYEPIECES)
4-3.
(SHEET 4 OF 6)
REMOVE COVER (1)
MAKE CHECKS ON
SIDE WITH POOR
FOCUS
USING MULTIMETER,
CHECK RESISTANCE
OF VARIABLE
RESISTOR
(2) (JPG).
SET METER SCALE
TO `RX 10,000'.
PLACE
PROBE WITH BLACK
LEAD ON CENTER
TERMINAL (3).
PLACE
PROBE WITH RED
LEAD ON TERMINAL
WITH WHITE WIRE
(1).
USING
SCREWDRIVER, TURN
VARIABLE RESISTOR
(2) FULLY
COUNTERCLOCKWISE
MULTIMETER SHOULD
READ INFINITY
(00) OHMS.
REPLACE VARIABLE
R E S I S T O R (2) (VOL
Para 4-3 (Sheet 4 of 6)
4-9
Vol I
