TM 9-1240-216-34
IMAGE DIM OR FLICKERING (SHEET 3 OF 4)
4-4.
LISTEN FOR
SNAPPING OR
POPPING SOUND
( A R C I N G INSIDE
THE PERISCOPE)
TURN OFF POWER
S U P P L Y (JPG).
DISCONNECT CABLE
(2) FROM
CONNECTOR (3) AND
INSTALL CAP (4).
LOOK AT ANY
TARGET THROUGH
EYEPIECES (1).
(FIRST BOTH, THEN
ONE AT A TIME).
TURN OFF POWER
S U P P L Y (JPG).
DISCONNECT CABLE
(2) FROM
CONNECTOR (3) AND
INSTALL CAP (4).
REPLACE ELECTRON
TUBE ON DIM SIDE
DO CHECKOUT (PARA
Para 4-4 (Sheet 3 of 4)
4-14
Vol I
