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737-300/400/500MAINTENANCE MANUAL
c) The captain's HSI heading reads 15 degrees. d) The captain's RDDMI heading reads 15 degrees. e) The captain's HSI display of the ground speed reads 200
knots. f) The captain's HSI display of the drift angle reads -10 degrees left.
(c)
Release the DSPL SEL switch on the ISDU.
(d)
Set the SYS DSPL switch on ISDU to R.
(e)
Set and hold the DSPL SEL switch on the ISDU in the TEST position.
NOTE: Release the DSPL SEL switch from the TEST position and
____
it goes back to the TK/GS position.
Release the switch to stop the test.
You will possibly have to do this step again to see all effects of the test.
1) For seconds 0-2, make sure that: a) The display on the ISDU comes on. b) The ALIGN, FAULT, ON DC, and DC FAIL annunciators on
the right side of the MSU are on. c) The IRS master caution light on the first officer's side of the pilot's lightshield comes on. 2) For seconds 2-10, make sure that: a) The ALIGN, FAULT, ON DC, and DC FAIL annunciators on the right side of the MSU turn off. b) The IRS master caution light on the first officer's
side of the pilot's lightshield turns off. c) The display on the ISDU turns off. d) The HDG flag on the first officer's HSI comes into
view. e) The ATT flag on the first officer's ADI comes into view.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT EFIS ú
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737-300/400/500MAINTENANCE MANUAL
3) For seconds 10 and on, make sure that: a) The pitch display on the first officer's ADI reads 5 degrees pitch up. b) The roll display on the first officer's ADI reads 45
degrees roll right. c) The first officer's HSI heading reads 15 degrees. d) The first officer's RDDMI heading reads 15 degrees. e) The first officer's HSI display of the ground speed
reads 200 knots. f) The first officer's HSI display of the drift angle reads -10 degrees left.
(f) Release the DSPL SEL switch on the ISDU.
F. Built-In Test Equipment (BITE) Test of the IRS
S 865-063
CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN DAMAGE THEM.
(1)
Set the switches on the MSU to the ALIGN or NAV position.
S 745-064
(2)
Do these steps to operate the BITE of the IRS.
NOTE: For illustrations of IRS BITE CDU displays, refer to 22-05.
____
NOTE: CDU data lines that permit the person a selection are
____ identified with a caret (< or >). The CDU has 12 line-select keys. Six keys are on each side of the display. 1L thru 6L are on the left side and 1R thru 6R are on the right side.
(a) Do these steps to access the MAINT BITE INDEX 1/1 page. 1) Push the INIT REF key on the CDU.
a) Make sure that the CDU shows the INIT REF INDEX 1/1 page.
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A 737-300/400/500MAINTENANCE MANUAL
DATA STATUS BLOCK
1L 2L 3L 4L 5L 6L
PAGE NUMBER
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