EFFECTIVITY
AIRPLANES WITH DELCO INS CONFIG 1 01 A Page 115 Apr 25/8934-41-00
ENSURE THAT ALL APPLICABLE CIRCUIT BREAKERS ARE CLOSED. (Refer to INS Power Interface - Description and Operation.) Check that circuit breakers remain closed. IF -
PROCEDURE 1NOT OK
ENSURE THAT VOR-ILS/INS SWITCH IS IN INS POSITION AND INS TRANSFER SWITCH IS POSITIONED TO SYSTEM UNDERGOING TEST - Check that:
OK NOT OK PROCEDURE 2 IF -(2) Data Source annunciator in HSI displays number of system undergoing test. (1) VOR-ILS/INS annunciator in HSI displays INS.
ADJUST CABIN LIGHTING CONTROLS FOR OPTIMUM MSU AND CDU PANEL ILLUMINATION - Check that keyboard, clear key and illuminated panel intensity varies as cabin lighting control is adjusted. IF -
PROCEDURE 3NOT OK
OK
PLACE MSU MODE SELECTOR IN STBY AND SET DATA SELECTOR SWITCH TO DSRTK/STS - Check that:
(1) On airplanes with CIV-3IN, CIVA-20 AND CIVA-25 INS programs, FROM/TO display shows 1 2.
On airplanes with CIVA-28-A and CIVA-28A-2 INS programs,
FROM/TO display shows O 1.
On airplanes with CIVA-32C INS program,
FROM/TO display shows 0 1.
(2)
INSERT key illuminates
(3)
Right-hand display shows 0--95.
PROCEDURE 4NOT OK
OK
INS Trouble Shooting
Figure 102 (Sheet 1)
EFFECTIVITY CONFIG 1 AIRPLANES WITH DELCO INS
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OK
OPEN INS PWR CIRCUIT BREAKERS - Check that:
(1) CDU BAT light illuminates
(2) MSU BAT light does not illuminate
(3) Ground crew call horn (in the nose wheel well) sounds a warning 30 |10
seconds after circuit breakers are opened.
CLOSE INS PWR CIRCUIT BREAKERS - Check that:
(1) Left-hand data display shows desired track angle remaining in DCU memory from previous operation.
When HOLD button is pressed (and illuminated),
On airplanes with CIV-31N INS program,
the left-hand display shows 63 14
On airplanes with CIVA-20 INS program,
the left-hand display shows 11 05.
On airplanes with CIVA-25 INS program,
the left-hand display shows 11 11
On airplanes with CIVA-28-A INS program,
the left-hand display shows 11 17.
On airplanes with CIVA-28A-2 INS program,
the left-hand display shows 11 24.
On airplanes with CIVA-32C INS program,
the left-hand display shows 25 15.
When HOLD key is pressed again (and goes out) the left-hand data display returns to desired track.
(2) Right-hand data display shows nav mode (1st digit 0), action/malfunction codes (2nd and 3rd digits blank if no malfunction) align mode number (5th digit shows 9), and desired performance index (6th digit shows 5).
IF -
INS Trouble Shooting
Figure 102 (Sheet 2)
EFFECTIVITY CONFIG 1AIRPLANES WITH DELCO INS
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OK
INS Trouble Shooting
Figure 102 (Sheet 3)
EFFECTIVITY CONFIG 1AIRPLANES WITH DELCO INS
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NOT OK
OK
INS Trouble Shooting
Figure 102 (Sheet 4)
EFFECTIVITY CONFIG 1AIRPLANES WITH DELCO INS
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OK
INS Trouble Shooting
Figure 102 (Sheet 5)
EFFECTIVITY CONFIG 1AIRPLANES WITH DELCO INS
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OK
OBSERVE READY NAV LIGHT ON MSU - Check that READY NAV light illuminates when PROCEDURE 16 OK NOT OK align mode number reaches the desired performance index. IF -
SET MODE SELECTOR TO NAV AND OBSERVE NAVIGATION DATA ON CDU AND FLIGHT INSTRUMENTS - Check that CDU and flight instrument displays are as follows:
(1)
READY NAV lamp extinguishes
(2)
NAV and HEADING flags in HSI retract
(3)
CDU displays as follows: and Operation.)
DSS Position
(a)
TK/GS
(b)
HDG/DA
(c)
XTK/TKE
(d)
POS
(e)
WAYPT (rotate thumbwheel)
OK
(Refer to Control Display Unit - Description
L-H DisplayTrue hdg True hdg Actual Cross-track
Present Position Latitude
Waypoint Latitude R-H Display000 000 Desired track minus
Heading
Present Position Longitude Waypoint Longitude
INS Trouble Shooting
Figure 102 (Sheet 6)
EFFECTIVITY
CONFIG 1AIRPLANES WITH DELCO INS
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INS Trouble Shooting
Figure 102 (Sheet 7)
EFFECTIVITY CONFIG 1AIRPLANES WITH DELCO INS
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