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TM 11-5805-387-34-2
2-17. SCOPE MODULE A2 CENTERING ADJUSTMENT
Test Equipment
Multimeter ME-26B/U
Extender cable (para 2-2)
Test Connections
Make sure ON/OFF switch is in OFF position.
Remove scope module A2 and connect extender cable.
Remove metal cover on the right side of the module protecting component board A2.
Connect the positive probe of multimeter to terminal 1 and ground probe to terminal 3 of component board A2.
DEATH ON CONTACT may result from contact with high voltage in scope module A2. Scope
module contains 1,100 volts dc. Do not touch the multimeter probes with power on.
1. Rotate front panel SCOPE INTENSITY control
fully clockwise. Set ON/OFF switch ON.
2. Adjust HORIZONTAL CENTERING
0 volt
potentiometer A2A2R4.
3. Set ON/OFF switch OFF. Connect multimeter
positive probe to terminal 2 of component
board A2.
4. Set ON/OFF switch ON. Adjust VERTICAL
0 volt
CENTERING potentiometer A2A2R2.
5. Set ON/OFF switch OFF. Disconnect
multimeter. Replace metal cover over compo-
nent board A2A2.
2-38

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