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STEP 13. WIRING AND SWITCH TESTS
Table 3-2. Test Adapter Continuity Checks Cont - TM-11-5820-890-30-4_301
TM-11-5820-890-30-4 Ground ICOM Radio Sets: Receiver-Transmitter Radio RT-1523(C)/U (NSN 5895-01-234-8093) Manual
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TM 11-5820-890-30-4
Table 3-2. Test Adapter
Continuity
Checks
1. SWITCH POSITIONS
2. DMM (+)
3. DMM (-)
4. RESULTS
5. FAULT
TEST EQPT INPUT: INT
LOAD: 1
FREQ CNTR
- CC
TP12
560 to 680 ohms
R7
LOAD: 2
FREQ CNTR
- CC
TP12
460 to 560 ohms
R8
LOAD: 3
FREQ CNTR
- CC
TP12
200 to 240 ohms
R9
LOAD: 4
FREQ CNTR
- CC
TP12
135 to 176 ohms
R10
HANDSET
TP12
90 to 110 ohms
R11
- A
TEST EQPT INPUT: EXT
FREQ CNTR
EXT PROBE
- CC
- CC
Less than 1 ohm
BASEBAND: 1
AUDIO UUT
- E
TP12
Less than 1 ohm
S2
AUDIO UUT
EXT TRIG
- D
- CC
Less than 1 ohm
RESPONSE: 5
FREQ CNTR
AUDIO UUT
- CC
- E
Less than 1 ohm
TEST EQPT INPUT: INT
BASEBAND: 2
AUDIO REF
- E
TP12
Less than 1 ohm
STIMULUS: 3
EXT TRIG
HANDSET
Less than 1 ohm
STIM SEL: HANDSET
- CC
- D
BASEBAND: 3
MOD GEN
EXT TRIG
- CC
- CC
Less than 1 ohm
CAL: MOD GEN
SCOPE 2
MOD GEN
- CC
- CC
Less than 1 ohm
CAL: OFF
SCOPE 2
MOD GEN
- CC
- CC
Greater than
100 k ohms
CAL: FCTN GEN
SCOPE 2
FCTN GEN
- CC
- CC
Less than 1 ohm
BASEBAND: 4
AUDIO UUT
- F
TP12
Less than 1 ohm
RESPONSE: 6
FREQ CNTR
AUDIO UUT
- CC
- F
Less than 1 ohm
CAL: MOD GEN
FCTN GEN
AUDIO UUT
- CC
Less than 1 ohm
STIM SEL: FCTN GEN
- F
STIMULUS: 2
BASEBAND: 5
AUDIO REF
- F
TP12
Less than 1 ohm
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