TM 9-4120-408-14
4-21. MODE SELECTOR SWITCH (S1) MAINTENANCE. (Continued)
d. Install.
(1) Refer to tags and install electrical leads on mode selector switch (4). Remove and discard tags.
(2) Position mode selector switch assembly (4) in control module housing (5) with terminal number 1 on top and
secure with two screws (3).
(3) Install selector knob (2) on mode selector switch (4). Rotate shaft of mode selector switch (4) fully
counterclockwise and position knob (2) pointing at the HIGH HEAT position. Secure knob (2) with retaining
screw (1).
(4) Turn mode selector switch (4) to the OFF position.
(5) Follow on maintenance:
(a) Refer to applicable technical manual and connect power.
4-22. LIGHT EMITTING DIODE (LED) ASSEMBLY MAINTENANCE
This task covers:
Remove
Repair
Test
Install
INITIAL SETUP:
Tools
Equipment Conditions (Continued)
Tool Kit, Service Refrigeration Unit,
Power disconnected, refer to applicable
technical manual.
Control Module Top Panel removed,
Item 5
Material/Parts
General Safety Instructions
Do not work on equipment without
following standard shop safety
procedures.
WARNING
Refer to TM 9-4120-408-24P for part
Do not work on equipment with power
numbers of items to be replaced.
connected. Electrocution hazard is
present. Failure to obey this warning
Equipment Conditions
may result in death or serious personal
injury.
Air Conditioner shut down,
4-33