T M 9 - 4 9 3 1 - 3 8 1 - 1 4 & P - 2
FRAME 25
Remove Light-Switch:
1.
2.
3.
4.
5.
6.
NOTE
l Use this task to replace any of seven light-switches:
PROCESSOR FAILURE/ DS2 NO
S4
POWER FAILURE
POLARITY
S5
UUT POWER
S2
FIELD OF VIEW
S6
YES
S3
FAULT/LAMP TEST S7
UUT POWER switch S2 (1) is shown.
l Read paragraph 2-4 on tagging and soldering wires before
doing any work.
Pull Iampholder (2) of light-switch (1) out until it stops.
Turn Iampholder (2) counterclockwise 1/4 turn. Push Iampholder (2) in and pulI out
of light-switch (1). Look at four lamps (3) for cracks or burns. If bad, replace light-
switch (1). If OK, set Iampholder (2) aside for later use.
Unsolder seven wires (4) from light-switch (1). Pull back half of light-switch (1) off
and set aside for later use.
Unsolder eight wires (5) from light-switch (1). Cut lacing tape (6) holding wire to
light-switch (1) with knife.
Turn two screws (7) counterclockwise with screwdriver to unlock light-switch (1)
Take bracket (8) off light-switch (1) and pull light-switch (1) through panel (9). Turn
in light-switch (1), Iampholder (2), and bracket (8).
GO TO FRAME 26
Volume IV
2-68
Para. 2-6, Task 12
