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Page Title:
Chart 7-1. Troubleshooting Chart - Continued |
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 TM 5-6350-262-14/5
NAVE LEX 0967-LP466-9052
TO 31S9-4-38-1
Chart 7-1. Troubleshooting Chart--Continued
Step
Procedure
Symptom
Probable Trouble
Corrective Action
b. Defective relay A9K3.
b. Replace instantaneous alarm
module A9.
c. Open diode on latched alarm
c. Check for 20 V dc between pin S5-
module A10.
8 and ground. No voltage, replaced
module A10.
d. Defective LATCH/NON LATCH
d. Check for 20 V dc from pins S5-2
switch S5.
and -9 to ground. No voltage at
either pin, replace switch.
l0c
a. Meter still indicates less than 2000
a. Open diode on latched alarm
a. Replace module A10.
Ohms after tamper switch is
module A10.
depressed.
10d
a. Meter still indicates less than 2000
a. Defective exit or entrance time
a. Replace instantaneous alarm
ohms after expiration of entrance
delay circuit.
Module A9 and/or latched alarm
time delay.
module A10.
b. Meter indicates more than 100,000
b Defective entrance time delay
b. Replace latched alarm module A10.
ohms instantaneously.
circuit.
10e
a. Meter still indicates less than 2000
a. Defective relay A9K2.
a. Replace instantaneous alarm
ohms after jumper wire is
module A9.
disconnected.
11b
2. Meter still indicates less than 2000
a. Defective SCR switch or relay
a. Replace latched alarm module A10.
Ohms after jumper wire is
AlOK1.
disconnected.
b. Open diode CR2.
b. Check for 20 V dc between pin S5-
4 and ground. No voltage, replace
status processor housing assembly.
c. Defective switch S5.
c. Check for 20 V dc between pin S5-
5 and ground. No voltage, replace
switch.
11c
a. Meter still indicates less than 2000
a. Defective SCR switch or relay
a. Replace latched alarm module A10.
ohms after tamper switch is placed
A100K2.
in the alarm position.
11e
a. Meter indication not in accordance
a. Defective exit and/or entrance time
a. Replace instantaneous alarm
with performance standard.
delay circuit.
Module A9 and/or latched alarm
module A10.
11g
a. Meter still indicates less than 2000
a. Defective diode CR1.
a. Replace status processor housing
ohms after tamper switch is placed
assembly.
in the alarm position.
11h
a. Meter does not indicate more than
a. Defective relay A10K4.
a. Replace latched alarm module A10.
100,000 ohms when power is turned
off.
12a
a. Meter indicates less than 1 V dc.
a. Defective relay A10K3 or A10OK4,
a. Replace latched alarm module A10.
or SCR switch.
b. Defective operating mode switch
b. Check for approximately 5 V dc at
S3.
terminal 3-4 and 3-3 of switch S3.
Voltage present at terminal 3-4 but
not at 3-3, replace switch.
12b
a. Meter still indicates approximately
a. Defective relay A10K3 or A10K4,
a. Replace latched alarm module A10.
5 V dc after expiration of entrance
or open diode.
time delay.
7-5
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