(d)

(e)

A
747-400 MAINTENANCE MANUAL
Put in the span values from Figure 523:
 1)  When EDIT SPAN? shows, push the YES key.
 2)  Use the + key to step to the span 17F display.
 3)  Put in the span value for load sensor 17F from Figure 523.
 4)  When the correct span value shows, push the ENTER key.
 5)  When OK? shows, make sure the value is correct and then push the YES key.
 6)  When DONE? shows, push the NO key to go to the subsequent sensor.
 7)  Put in the span value for each sensor.
 8)  When DONE? shows after you put in all the span values, push the YES key. (The WBC then shows WRITE IN PROGRESS for approximately 8 seconds.)
 9)  When EXIT MODE 99? shows, push the NO key.
Put in the offset values from Figure 524:
 1)  When EDIT OFFSET? shows, push the YES key.
 2)  Use the + key to step to the OFF 17F display.
 3)  Put in the offset value for load sensor 17F from Figure 524.
 4)  When the correct offset value shows, push the ENTER key.
 5)  When OK? shows, make sure the value is correct and then push the YES key.
 6)  When DONE? shows, push the NO key to go to the subsequent sensor.
 7)  Put in the offset value for each sensor.
 8)  When DONE? shows after you put in all the offset values, push the YES key. (The WBC then shows WRITE IN PROGRESS for approximately 8 seconds.)
 9)  When EXIT MODE 99? shows, push the NO key.
Put in the resistance values from Figure 525:
 1)  When EDIT CAL RES? shows, push the YES key.
 2)  Use the + key to step to the CRES 17F display.
 3)  Put in the resistance value for load sensor 17F from Figure 525.
 4)  When the correct resistance value shows, push the ENTER key.
 5)  When OK? shows, make sure the value is correct and then push the YES key.
 6)  When DONE? shows, push the NO key to go to the subsequent sensor.
 7)  Put in the resistance value for each sensor.
 8)  When DONE? shows after you put in all the resistance values, push the YES key. (The WBC then shows WRITE IN PROGRESS for approximately 8 seconds.)
 9)  When EXIT MODE 99? shows, push the YES key. (The WBC then shows PROCESS COMPLETE for approximately 8 seconds.)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 P. Make a Record of Calibration Data
 S 975-122
 (1)  Read the load sensor span values with WBC mode-24 and write the data in Figure 526:
 (a)  
Push the MODE key.

 (b)  
Push the 2 key and then the 4 key.

 (c)  
Push the ENTER key.

 (d)  
When OK? shows, push the YES key.

 (e)  
When SPAN 1 shows, read the sign and number that show to the right of SPAN 1 and record them in Figure 526.

 (f)  
Push the + key to get the span values for the other sensors.

 (g)  
Push the RESET key to stop this mode. (The WBC shows PROCESS ABORTED.)

 S 975-124
 (2)  Read the load sensor offset values with WBC mode-25 and write the data in Figure 526:
 (a)  
Push the MODE key.

 (b)  
Push the 2 key and then the 5 key.

 (c)  
Push the ENTER key.

 (d)  
When OK? shows, push the YES key.

 (e)  
When OFF 1 shows, read the sign and number that show to the right of OFF 1 and record them in Figure 526.

 (f)  
Push the + key to get the offset values for the other sensors.

 (g)  
Push the RESET key to stop this mode. (The WBC shows PROCESS ABORTED.)

 S 975-126
 (3)  Read the load sensor calibration resistances with WBC mode-26 and write the data in Figure 526:
 (a)  
Push the MODE key.

 (b)  
Push the 2 key and then the 6 key.

 (c)  
Push the ENTER key.

 (d)  
When OK? shows, push the YES key.

 (e)  
When CRES 1 shows, read the sign and number that show to the right of CRES 1 and record them in Figure 526.
　
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