(b)  
The Intrgrated Display System (IDS) is serviceable (AMM 31-61-00/501).

 (c)  
The temperature of each brake must be less than 5 units to do this test.

 E.  
Prepare for the Test

 S 865-004
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-034

 (2)  
Prepare the CDU for the test:

 (a)  
Push the MENU key on the CDU to show the MENU.

 (b)  
Push the line select key (LSK) that is adjacent to <CMC to show the CMC MENU.

 (c)  
If <RETURN shows after you push the LSK, push the LSK that is adjacent to <RETURN until you see the CMC MENU.

 (d)  
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.

 (e)  
Push the NEXT PAGE key until you find the <32 BRAKE TEMPERATURE.

 (f)  
Push the LSK that is adjacent to <32 BRAKE TEMPERATURE to show the GROUND TESTS menu for the BTMS.

 S 865-036
 (3)
Push the GEAR button on the EICAS Display Select Panel, (P10).

 (a)  
Make sure the synoptic page for the landing gear shows on the auxiliary EICAS display.

 (b)  
Make sure the number "4" or less shows in all 16 brake temperature boxes on the gear synoptic page.

 F.  
Brake Temperature Monitoring System Ground Test

 S 745-037
 (1)  
Push the LSK adjacent to <BRAKE TEMP SYSTEM.

 (a)  
When the CMC shows the TEST PRECONDITIONS page shows, make sure each instruction on the page is complete.

 (b)  
Push the LSK that is adjacent to START TEST>.

 NOTE: IN PROGRESS shows during the test.
____
 (c)  Make sure these conditions occur during the test: 1) The primary EICAS display shows the amber BRAKE TEMP message. 2) The number "5" or a larger number shows in all 16 brake temperature boxes on the gear synoptic page.
 3)  The BRAKE TEMP message on primary the EICAS display does not show after 10 seconds.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-46-00
 ALL  ú ú 01 Page 502 ú Oct 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 745-053
 (2)  When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <BRAKE TEMP SYSTEM.
 NOTE: If the PASS indication shows, no failure occured
____
 during the test.

 (a)  
Make sure the number "4" or less shows in all 16 brake temperature boxes on the gear synoptic page.

 (b)  
If FAIL> shows: 1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure. 2) Push the NEXT PAGE key until you find all the GROUND TEST MSG pages. 3) Make a note of all CMCS messages, CMCS message numbers, and ATA numbers that show on the GROUND TEST MSG pages.

 4)  Go to the CMCS Message Index of the Fault Isolation Manual (FIM) to find the corrective action for each CMCS message.
 G.  Put the Airplane Back to Its Usual Condition
 S 865-051
 (1)  Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

 TASK 32-46-00-735-038
 3.  Brake Temperature Monitoring System - System Test (Fig. 501)
_________________________________________________
 A.  General
 (1)  
This task includes a test of the brake temperature sensors.

 (2)  
It is necessary to do the BTMS ground (BITE) test before you do the test of the brake temperature sensors.

 (3)  
This task uses the Central Maintenance Computer (CMC) and the EICAS display to do the full test of the Brake Temperature Monitoring System (BTMS).

 (4)  
During the temperature sensor test, the EICAS synoptic page for the landing gear will not show a temperature indication when you remove a sensor. The brake display for that sensor location will stay out of view until you connect the sensor.

 B.  
Special Tools and Equipment

 (1)  
ST2584C - Wrench

 C.  
References

 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
　
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