Section VII
TABLE 7-2A. FLIGHT LINE CERTIFICATION PROCEDURE (CONT)
Normal
Circuit or
If Indication
Step
Procedure
Indication
Function Tested
Is Abnormal
10
Determine the 1-cycle error l-Cycle error
Part
by subtracting the error at (90-270) shall be
III
270 degrees algebraically
0 6 minutes.
from the error at 90
degrees.
11
E1-E2 Check Test
Part
I
El NORM. -REV. to E1
E1 CHECK indi-
This indicator verifies
Replace defective lamp
cater shall light.
that E1-E2 CHECK
1DS4 or switch 1S3.
NORM.
switch is in E1 CHECK
E2 NORM. -REV. to E2
position.
NORM.
E1-E2 CHECK to E1
CHECK.
Replace defective
11
READOUT SELECT to
NULL INDICATOR
Earth's magnetic
field strength at
Part
90.
shall indicate a
variable resistor 1R5,
meter 1M3 or Monitor.
null.
Monitor location
II
is determined by
Rotate AREA COMP
(Applicable to Part No.
vernier control to 500.
application of E1
2592080-8. ) Replace de-
voltage to leg A
f ective variable resistor
Adjust El CHECK
of Monitor.
1R7, resistor 1R55 or
vernier control until
1R56.
NULL INDICATOR
indicates a null.
11
Replace defective lamp
E1-E2 CHECK to E2
E2 CHECK indi-
This indicator verifies
1DS5 or switch 1S3.
that E1-E2 CHECK
cater shall light.
Part
CHECK.
switch is in E2
III
CHECK position.
Replace defective
11
Adjust E2 CHECK
NULL INDICATOR
Earth's magnetic
variable resistor 1R6,
field strength at
Part
vernier control until
shall indicate a
resistor 1R57 or 1R58.
IV
NULL INDICATOR
null.
Monitor location
indicates a null.
is determined by
application of E2
voltage to leg A
of Monitor.
12
Manual and Electrical
Swing Test
E1-E2 CHECK to OFF.
This test verifies
Replace defective switch
Corrected manual
correct operation
1AT1, 1AT6, 1AT7,
swing error shall
1AT8, 1S4, 1S5, or 1S6.
E1 and E2 NORM. -REV.
equal electrical
of the Compass
to OFF.
swing error within
Calibrator and
0 6 minutes at
proper calibration
POWER ON-OFF to
each heading.
of the Monitor,
POWER OFF.
Console, and MARD.
7-8I
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