format. 4) Make sure the lower EICAS IDU shows the secondary engine format.

 (f)  
Push the MENU key on the CDU to show the menu.

 (g)  
Push the LSK (line select key) adjacent to the <CMC prompt to show the CMC menu.

 NOTE: If the CMC menu is not shown, push the <RETURN LSK, if
____ it is necessary, until you see the menu.
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747-400 MAINTENANCE MANUAL
 (h)  
Push the <GROUND TESTS LSK to show the GROUND TESTS menu.

 (i)  
Push the NEXT PAGE key, if it is necessary, until you find the <31 INDICATING/WARNING prompt.

 (j)  
Push the <31 INDICATING/WARNING LSK to show the GROUND TESTS menu.

 (k)  
Push the <IDS LSK to start the test. 1) Make sure you hear the aural warning sound. 2) Make sure the IN PROGRESS indication is shown above the IDS

 prompt on the CDU. 3) Make sure the six IDUs show the test screen (Fig. 201).

 (l)  
Look at the test screen and make sure the LRUs that were loaded contain the correct software part number.

 NOTE: The EIU software part numbers will appear in these
____
 locations:

 -L EIU on the captain's ND and PFD
 -C EIU on the upper and lower EICAS
 -R EIU on the first officer's ND and PFD.
 F. Put the Airplane in Its Usual Condition
 S 862-032
 (1)
Set the selector switch on the data loader to the NORMAL position.

 S 862-033

 (2)  
Put the plastic protection diskette in the disk drive, if one had been installed.

 (3)
Set the GND TESTS switch on the P461 panel to the NORM position.

 (4)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).

 S 862-043
 S 862-015
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MAINTENANCE MANUAL

IDU PINS 1#3
SOFTWARE PART NOS.
EIU PINS 1#2 #P  IDU ###-####-### X EIU ###-####-###
PROGRAM PINS: 1#### ####32 33#### ##56 #P
ABCDEFGHIJKLMNOPQRSTUVWXYZ

IDS TEST

01234567890.1.2.3.4.5.6.7.8.9.`-./=+
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123 4567890..........`'?>./=:-+( ),
123456789
ABCDEFGHIJKLMNOPQRSTUVWXYZ() .........
01234567890 123456789.`%./:-#~
____# IS A NUMERICAL VARIABLE.
NOTE: X IS L,C OR R.
IDS Test Pattern Figure 201
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