TM 1–1520–238–T–3
Change 5
1–9
EXAMPLE:
17–2 SIGNAL NAME:
DEK SWITCH
MEMORY LOCATION: 000444
MEMORY DATA BIT(S):
8–11
(HEX)
CONDITION:
If fourth digit displayed on HOD is 0=STBY.
If fourth digit displayed on HOD is 1=RANGE.
If fourth digit displayed on HOD is 2=FD/LS.
If fourth digit displayed on HOD is 3=(NOT USED).
If fourth digit displayed on HOD is 4=TGT.
If fourth digit displayed on HOD is 5=CODE.
If fourth digit displayed on HOD is 6=SP1.
If fourth digit displayed on HOD is 7=OFF.
SIGNAL FUNCTION:
Monitors position of DEK DATA ENTRY switch.
REMARKS: From DEK through CPG MRTU Type III to FCC. Selects operating mode for
fire control system.
PASS:
If CONDITION corresponds to proper mode for switch selected, go to paragraph
17–3.
FAIL: Location of fault: DEK, wiring from DEK to CPG MRTU Type III, CPG MRTU Type
III. Troubleshoot wiring to isolate fault TM 9–1230–476–20–2.
g.
On the data entry keyboard (DEK), set DATA ENTRY switch to SP1 (Fig. 1–2) (ADC). On CDU depress Fixed
Action Button (FAB) PGM, then depress Variable Action Button (VAB) READ (ADD).
h.
Press and release the R SHIFT key (ADC).
i.
Press and release the PQR/6 key (ADC).
M53–003A
DATA ENTRY
KEYBOARD SWITCH
R SHIFT
R
BST
EGI
AWS HARM
PGM
MENU
READ
AND
7 – MD9200001 – 51
FCC
CONFIG
BRT
READ
PGM
ADD
ADC
Figure 1–2.
CPG Data Entry Keyboard (ADC) and CDU (ADD)
