(2)
The APCH WARN annunciator is on the first officer’s P3 panel. This indicates the system monitor in the HUD computer detects a problem on an approach when below 500 feet. You may need to look at the HGS TEST MENU items if the APCH WARN annunciator comes on during an approach.
B. Possible Causes
(1)
A HUD system failure.
(2)
A navigation system input to the HUD system that is out of tolerance.
(3)
A required navigation system input miscompare.
C. Related Data
(1)
(SSM 34-36).
(2)
(SSM 34-36-11).
(3)
(SSM 34-36-12).
(4)
(WDM 34-36).
(5)
(WDM 34-36-11).
(6)
(WDM 34-36-12).
D. Initial Evaluation
(1) Do
this
task:
Head
Up
Display
BITE
Procedure,
34-36
TASK
801.
(a)
If the FAULT light on the HUD control panel is on, and a fault code is displayed on the HCP STBY display line, write down the fault code information and refer to the corrective action for that code.
(b)
If the FAULT light on the HUD control panel does not show, then there was an intermittent fault, and continue below.
E. Fault Isolation Procedure
(1) Push the TEST switch on the HUD control panel to turn on the test mode.
NOTE: The test mode is on when the LED on the TEST switch is on.
(a)
Make sure the HGS TEST MENU shows on the HUD combiner display.
(b)
Move the cursor to HGS CAPABILITY on the HGS TEST MENU. NOTE: Use the DIM-and BRT+ keys on the HUD control panel to move the cursor.
(c)
Push the ENTER key on the HUD control panel to select HGS CAPABILITY.
EFFECTIVITY SIL 004, 005, 017, 018 34-36 TASKS 806-807
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details Page 208 Jun 15/2010
to that system’s fault isolation procedure. 2) If you didn’t find a fault on the HGS CAPABILITY FAULTS page, then continue.
(2) Push the TEST switch on the HUD control panel to turn on the test mode.
NOTE: The test mode is on when the LED on the TEST switch is on.
(a)
Make sure the HGS TEST MENU shows on the HUD combiner display.
(b)
Move the cursor to RECORDED FAULTS on the HGS TEST MENU. NOTE: Use the DIM-and BRT+ keys on the HUD control panel to move the cursor.
(c)
Push the ENTER key on the HUD control panel to select RECORDED FAULTS.
(d)
Enter a flight leg number, (the most recent is 1). NOTE: Use the DIM-and BRT+ keys to see the faults that are above or below. 1) If you find a fault on the RECORDED FAULTS page, write down the fault and refer to that
system’s fault isolation procedure. 2) If you didn’t find a fault on the RECORDED FAULTS page, then you corrected the faults.
-------------------------END OF TASK ---------------------------
810. Critical Symbol Monitor -Fault Isolation
A. Description
(1) The task is for this HUD maintenance message:
(a) CRITSYM shows in the HUD control panel and FC80 shows on the HUD computer.
B. Possible Causes
(1)
HUD Computer
(2)
OHU
C. Circuit Breakers
(1) These are the primary circuit breakers related to the fault:
CAPT Electrical System Panel, P18-2 Row Col Number Name C 1 C01622 HEAD UP DISPLAY ANNUN DC C 2 C01618 HEAD UP DISPLAY CONT PNL DC C 5 C01619 HEAD UP DISPLAY SYS NORMAL DC C 6 C01620 HEAD UP DISPLAY SYS ALTN DC
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本文鏈接地址：737-600/700/800/900 FAULT ISOLATION MANUAL 故障隔離手冊 導航(132)
