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TM 11-5820-890-20-2
4-6
4.2.
TROUBLESHOOTING FLOWCHARTS. Continued
CHART 1
RCU DISPLAY READS •OPEN" DURING SELF TEST.
(Sheet 2 of 8)
1. REPLACE RT BATTERY BOX.
2. SET RT FCTN TO REM.
3. CONNECT AC VOLTMETER TO RT BATTERY
BOX E1 AND E2 TERMINALS. GROUND LEAD
CAN BE PLACED AT EITHER TERMINAL.
4. PRESS CALL KEYPAD AND HS PTT.
5. OBSERVE AC VOLTMETER.
NO
YES
AC VOLTMETER
READS
GREATER THAN
0.7 V ac
?
REPLACE RT.
REPLACED BATTERY BOX
IS BAD.
1
SH 2
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