TM 11-6625-1831-13
5-2b.
Electrical Test of Test Panel (Cont)
LOCATION/ITEM
ACTION
REMARKS
70.
TEST PANEL
a.
BITE TEST switch
Release.
b.
PWR switch
Set to OFF.
c.
All indicators
Check - should be off.
Malfunction 30
71.
Function switch
Set to resistance.
R X 1 Range
72.
TEST PANEL
RESIDUE potentio-
Turn fully clockwise.
RESIDUE potentiometer
meter (R2)
check
73.
TEST FIXTURE NO.
3
Jacks Y and Z
Check resistance - should be 0 to
Malfunction 31
20 ohms.
74.
Function switch
Set to Resistance.
R X 100 Range
75.
TEST PANEL
RESIDUE potentiometer
Turn fully counterclockwise
76.
TEST FIXTURE NO.
3
Jacks Y and Z
Check for 500 + 100 ohms.
Malfunction 32
77.
DIGITAL VOLTMETER
Connect to ac power.
Set POWER switch to ON.
78.
POWER SUPPLY
a. Output connections
Disconnect from J1 and J2 of test
fixture No 3. Connect to test fix-
ture No. 3 Jacks A (+) and k (-).
b. Output voltage
Set to 4.70 + 0.05 Vdc using digital
79.
TEST FIXTURE NO. 3
Jacks A (+) and k (-).
Check for 4.70 + 0 05 Vdc.
80.
TEST PANEL
DRIFT TEST
Set to position 135
DRIFT TEST potentiometer
potentiometer (R1)
check
81.
TEST FIXTURE NO.
3
Jacks A (+) and X (-)
Measure voltage with digital volt-
Malfunction 33
meter - should be 0.0 + 0.01 Vdc.
5-15
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