(10)
If the OHU 60/70 fault codes continue to show, remove and replace the OHU.

(11)
Replace the OHU.

These are the tasks:
AMM TASK 34-36-05-000-801
AMM TASK 34-36-05-400-801

(12)  
Do this task:
Head
Up
Display
BITE
Procedure,
34-36
TASK
801

EFFECTIVITY SIL 004, 005, 017, 018  34-36 TASK 811 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 212 Jun 15/2010 

(a)  If the HUD fault code does not show, then you corrected the fault.
-------------------------END OF TASK ---------------------------
812.  Brightness Control Range -Fault Isolation
A. Description
(1) This task is for this maintenance message:
(a)  BRTCTL with OHU60/70 fault codes.
B. Possible Causes
(1)
HUD Combiner

(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
D. 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

E. Initial Evaluation
(1)
Set the BRT control on the Combiner to a mid range setting.

(2)
Do
this
task:Head
Up
Display
BITE
Procedure,
34-36
TASK
801

(a)  
If the HUD fault code shows on the control panel, then do the Fault Isolation Procedure.

(b)
If the HUD fault code does not show, then there was an intermittent fault.

F. Fault Isolation Procedure
(1)
Open the circuit breakers on the Circuit Breaker List.

(2)  
Disconnect the OHU to the Combiner harness connector D 3193.

(3)  
Close the circuit breakers on the Circuit Breaker List.

(4)  
If BRTCTL and ALIGN HUD displays continue to show, remove and replace the combiner.

(5)
Replace the HUD Combiner. These are the tasks: AMM TASK 34-36-04-000-801 AMM TASK 34-36-04-400-801

(6)  
If the OHU 60/70 fault codes continue to show, remove and replace the OHU.

(7)
Replace the OHU. These are the tasks: AMM TASK 34-36-05-000-801 AMM TASK 34-36-05-400-801

(8)  
Do this task: Head
Up
Display
BITE
Procedure,
34-36
TASK
801

EFFECTIVITY SIL 004, 005, 017, 018  34-36 TASKS 811-812 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 213 Jun 15/2010 

(a)  If the HUD fault code does not show, then you corrected the fault.
-------------------------END OF TASK ---------------------------801. Weather Radar System BITE Procedure
EFFECTIVITY SIL 004, 005, 017, 018  34-36 TASK 812 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 214 Jun 15/2010 

A.  General
(1)  You do the weather radar receiver/transmitter BITE test from the front panel of the weather radar receiver/transmitter.
NOTE: The TEST (left) switch on the front panel of the weather radar receiver/transmitter starts the weather radar BITE test.
SIL 005, 007, 008, 101, 102
(2)  You do the weather radar system BITE test from the weather radar control panel.
SIL ALL
B.  BITE Procedure
　
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