12-28.
2.
Tools:
REPLACEMENT OF RCU
Removal and Installation of
Fiat tip screwdriver
TM 11-5820-890-30-4
COVERS. Continued
Bottom Cover.
Torque screwdriver
ITEM
ACTION
REMARKS
REMOVAL
a. RCU
b. 14 captive
screws
c. Bottom cover
INSTALLATION
d. Bottom cover
e. 14
captive screws
12-29.
Place on work surface with bottom
side up.
Use flat tip screwdriver. Fully loosen.
Lift free from RCU.
Set in place on RCU.
Install. Using torque screwdriver, torque
screws to 8 to 10 in-lb.
REPLACEMENT OF MODULES 19A2, 19A3, 19A4, 19A5, 19A6, 19A7, 19A8,
19A9, 19A10, AND 19A11.
This procedure is for replacement of the following modules.
Control Module (19A2)
Two-Wire interface (19A3)
Main Switching Module (19A4)
Bit Sync Switching Module (19A5)
Speaker Amplifier (19A6)
ICOM Power Supply (19A7)
ICOM Control Module (19A8)
ICOM Data I/O Module (19A9)
Fill Routing Module (19A10)
COMSEC Module (19A11)
Figure 12-12 shows the locations of these modules.
Tools:
Flat tip screwdriver
Torque screwdriver
Module extractor
12-149
