(b)
If the LCD screen shows MMR TEST COMPLETE NO FAILURES, then the MMR BITE test passed.
(c)
If the LCD screen shows MMR TEST COMPLETE FAILURES, then continue.
(d)
Push the right switch under the WHY? prompt.
(e)
If the LCD screen shows MMR FAIL or MMR FAIL EXTERNAL FAILURES PRESENT, then refer to the table at the end of this task to find the fault isolation task.
(f)
If the LCD screen shows MMR OK EXTERNAL FAILURES PRESENT, then do these steps: 1) Push the right switch under the MORE prompt.
EFFECTIVITY SIL ALL 34-31 TASK 801
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NOTE: The LCD screen will show the first maintenance message. The LCD screen can show only one maintenance message at a time. 2) Push the right switch under the MORE prompt to view more maintenance messages if multiple maintenances exist.
NOTE: If you continue to push the MORE switch, you will see all of the maintenance messages that are present. You will return to the first maintenance message when you push the MORE switch after the last maintenance message.
3) Refer to the table at the end of this task to find the fault isolation task for the applicable maintenance messages.
4) Push the left switch under the RETURN prompt to return to the normal mode screen.
NOTE: If no switch is pushed for five minutes on the receiver while in self-test mode, the LCD screen will return to the normal mode screen automatically.
SIL ALL
-------------------------END OF TASK ---------------------------
LRU/SYSTEM MAINTENANCE MESSAGE GO TO FIM TASK
MMR CONTROL FAIL 34-31
TASK
813
MMR GS ANTENNA FAILED 34-31
TASK
817
MMR LOC ANTENNA FAILED 34-31
TASK
816
MMR LRU STATUS 34-31
TASK
812
MMR MMR FAILED 34-31
TASK
814
MMR TUNING PORT B MISSING INPUT 34-31
TASK
815
EFFECTIVITY SIL ALL 34-31 TASK 801
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ILS Receiver
Figure 201 (Sheet 1 of 3)/ 34-31-00-990-802
EFFECTIVITY SIL ALL 34-31 TASK 801
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ILS Receiver
Figure 201 (Sheet 2 of 3)/ 34-31-00-990-802
EFFECTIVITY SIL 001-003 34-31 TASK 801
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ILS Receiver
Figure 201 (Sheet 3 of 3)/ 34-31-00-990-802
EFFECTIVITY SIL 004-021, 101-999 34-31 TASK 801
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806. LOC And G/S Flags Show On The Captain’s Display -Fault Isolation
A. Description
(1) The localizer (LOC) and glideslope (G/S) receiver functions have a failure.
B. Possible Causes
(1)
MMR-1, M2104.
(2)
VHF NAV switch S2, P5-28.
(3)
Wiring problem.
(4)
Display electronic unit (DEU), M1808.
C. Circuit Breakers
(1) This is the primary circuit breaker related to the fault:
CAPT Electrical System Panel, P18-1
Row Col Number Name
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