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 ALL  ú ú 04 Page 555 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-274
 (6)  
Prepare the CMC for the test:

 (a)  
Push the MENU key on the CDU.

 (b)  
Push the line-select key, adjacent to the CMC display.

 (c)  
Push the NEXT PAGE key.

 (d)  
Push the line-select key, adjacent to the OTHER FUNCTIONS display.

 (e)  
Push the line-select key, adjacent to the INPUT MONITORING display.

 (f)  
Push the CDU keys E/070/270/00, then push key 1L.

 (g)  
Push the NEXT PAGE key.

 (h)  
Push the CDU keys E/070/271/00.

 (i)  
Push the NEXT PAGE key.

 (j)  
Push the CDU keys E/099/272/00.

 (k)  
Push the NEXT PAGE key.

 (l)  
Push the CDU keys E/099/273/00.

 F.  
Do a Test of the Primary and Alternate Gear Tilt Sensors - On Ground (Fig. 502)

 S 745-292
 (1)  Use the table that follows to identify the port/label and bit data necessary in the subsequent steps.
 NOTE: This data is necessary when you do the system test for the
____ tilt position sensors and the gear lever switch.
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 32-61-00
 ALL  ú ú 04 Page 556 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 ~.......................................................................... | BIT TABLE (Primary) | ............................................................................ | | Bit Condition | ............................................................................ | Switch | Port/Label | Bit | 0 | 1 | ............................................................................ | L BODY GR | E/070/270/00 | 11 | NOT DOWN | GEAR DOWN | | DOWN/LOCK PRI | | | | | ............................................................................ | L WING GR | E/070/270/00 | 12 | NOT DOWN | GEAR DOWN | | DOWN/LOCK PRI | | | | | ............................................................................ | R WING GR | E/070/270/00 | 13 | NOT DOWN | GEAR DOWN | | DOWN/LOCK PRI | | | | | ............................................................................ | R BODY GR | E/070/270/00 | 14 | NOT DOWN | GEAR DOWN | | DOWN/LOCK PRI | | | | | ............................................................................ | L BODY GR | E/070/270/00 | 15 | NOT UP | GEAR UP | | UP/LOCK PRI | | | | | ............................................................................ | L WING GR | E/070/270/00 | 16 | NOT UP | GEAR UP | | UP/LOCK PRI | | | | | ............................................................................ | R WING GR | E/070/270/00 | 17 | NOT UP | GEAR UP | | UP/LOCK PRI | | | | | ............................................................................ | R BODY GR | E/070/270/00 | 18 | NOT UP | GEAR UP | | UP/LOCK PRI | | | | | ............................................................................ | L BODY GR | E/070/270/00 | 19 | NOT TILTED | TILTED | | TILT PRI | | | | | ............................................................................ | L WING GR | E/070/270/00 | 20 | NOT TILTED | TILTED | | TILT PRI | | | | | ............................................................................ | R WING GR | E/070/270/00 | 22 | NOT TILTED | TILTED | | TILT PRI | | | | |
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-61-00
 ALL  ú ú 04 Page 557 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 ~.......................................................................... | BIT TABLE (Primary) | ............................................................................ | | Bit Condition | ............................................................................ | Switch | Port/Label | Bit | 0 | 1 | ............................................................................ | R BODY GR | E/070/270/00 | 23 | NOT TILTED | TILTED | | TILT PRI | | | | | ............................................................................ | L BODY GR | E/070/270/00 | 24 | NOT OPEN | DOOR OPEN | | DOOR OPEN PRI | | | | | ............................................................................ | L WING GR | E/070/270/00 | 25 | NOT OPEN | DOOR OPEN | | DOOR OPEN PRI | | | | | ............................................................................ | NOSE GR DOOR | E/070/270/00 | 26 | NOT OPEN | DOOR OPEN | | OPEN PRI | | | | | ............................................................................ | R WING GR | E/070/270/00 | 27 | NOT OPEN | DOOR OPEN | | DOOR OPEN PRI | | | | | ............................................................................ | R BODY GR DOOR | E/070/270/00 | 28 | NOT OPEN | DOOR OPEN | | OPEN PRI | | | | | ............................................................................ | NOSE GR | E/070/271/00 | 18 | NOT DOWN | DOWN AND | | DOWN/LOCK PRI | | | AND LOCKED | LOCKED | ............................................................................ | NOSE GR | E/070/271/00 | 19 | NOT UP AND | UP AND | | UP/LOCK PRI | | | LOCKED | LOCKED | ............................................................................ | | E/070/271/00 | 21 | AIR MODE | GND MODE | ............................................................................ | GEAR LEVER | E/070/271/00 | 25 | NOT DOWN | LEVER DOWN | 2................…...................…..........…............….............1
　
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