|
| |
TM 11-5820-890-20-2
3-1
CHAPTER 3
CONTROL MONITOR (CM) (C 11291 SERIES)
Subject
Para
Page
Operational Check
3.1
3-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Flowcharts
3.2
3-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable Schematics
3.3
3-10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.
OPERATIONAL CHECK.
General guidelines for checking problems in Control Monitors (CM) are as follow: As with an Intercom System
(VIC), it is important to isolate the problem to the CM or the rest of the radio system as early as posible. Once
the problem is so isolated, make use of the appropriate radio operational check or the one for the CM which
follows. If the radio system being checked uses two CM's, rerun the Operational Check for the second CM.
These maintenance procedures are to be used only with the CM system. See TM 20-1 for maintenance
procedures for radio sets. The Operational Check is a series of steps to evaluate equipment before placing the
equipment in service. This check should be done with the equipment assembled.
NOTE
To get valid results, the Operational Check MUST be followed exactly as written.
Step 1 of the Operational Check lists actions to establish a starting condition for the performance checklist that
follows. The checklist is divided into steps. Each step tests how a component works alone and together in a
system. This system is defined as: one or two RTs in a VAA installation. If the installation contains two systems,
each system must be tested separately.
OPERATIONAL CHECK FOR CM
STEP 1. PREPARATION:
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
1.1
Set RT:
FCTN to STBY
CHAN to 1
MODE to SC
RF PWR to HI
VOL to Mid Range
DIM to Full CW
COMSEC to CT
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
1.2
Set VAA:
CB1 to OFF
DS1 to Full CCW
N/A
N/A
N/A
N/A
1.3
Set CM:
RADIO to 1
DIM to Full CW
N/A
N/A
N/A
N/A
1.4
Handset(s) (HS):
If VAA is used, connect to
VAA J3 (RT-A) or J2 (RT-B) *
Ensure HS is operational
N/A
Install known good HS
N/A
* If VAA is an A ,C or D model. Disconnect W-4 cable from VAA and RT. Connect H-250 to RT AUD/DATA.
W-4 only needs to be connected when transmitting packet Data.
|
