TM 9-2320-387-24-l
REFERENCE INFORMATION
INSTRUMENTS CIRCUIT
2. Connect the RED lead to positive and the BLACK lead
to negative.
3. Be sure to read the correct scale.
RESISTANCE
AND CONTINUITY
04,500
OHMS
STEIICE-R
TEST 91
1. Connect RED clip and BLACK clip to the terminations
indicated in the question. RED to the first, BLACK to
the second.
2. Start Test 91, 04.500
Ohms.
3. Displayed reading is in ohms. Less than 5 ohms is
continuity.
If the resistance is over 4.500 ohms,
SLUICE-R displays .9.9.9.9.
1:
I-
f
0 II
. .
WARNING
Disconnect
negative
battery cable
before disconnecting
and reconnecting
PCB harness.
WARNING
There is battery voltage at the PC9 at all
times. Failure to disconnect battery
cable will result in damage to equipment
or injury to personnel.
Repair harness (para. 4-80).
It is important to connect the leads as indicated because you
are checking continuity across a diode. The lamp will glow
dimly because you are supplying a small amount of power
through STUICE-R.
You may have to shade the lamp with
your hand to see if it glows.
A multimeter may not supply enough power to light the lamp.
In this case, look for a much greater resistance when
measuring with the leads connected in one direction than
when they are connected in reverse.
BATTERY
VOLTAGE
MULTIMETER
1. Set the voltmeter to a DC volts scale of at least 40
volts.
Replace lamp (para. 4-20).
DC VOLTAGE
O-45 VOLTS
STE/lCE-R TEST 89
1. Connect RED clip to the indicated test point,
BLACK clip to negative or ground.
2. Start Test 89. DC Volts.
3. Displayed reading is in volts.
54A
458A
CONTROLLER
WAIT-TO-START
LAMP
CONllNUlM
(RESISTANCE)
MULTIMETER
1. Set the voltmeter to an ohms scale of about
1,000 ohms.
2. Connect the RED and BUCK
leads to the
connections stated in the question.
3. Be sure to read the correct scale. Less than 5
ohms indicates continuity.
For an open circuit,
the meter should peg full scale (needle all the
way to the left).
2-319
