ILS FREQ ILS MODE
(FULL)

EFIS BITE - Self-Test (EHSI Test Displays)
Figure 503 (Sheet 2)

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A 737-300/400/500MAINTENANCE MANUAL

PLAN MODE

EFIS BITE - Self-Test (EHSI Test Displays)
Figure 503 (Sheet 3)

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A
737-300/400/500MAINTENANCE MANUAL
 (d)  On the left EFIS control panel, push each map mode display switch twice. 1) Make sure the symbols related to each switch are first
 removed, and then shown again on the left EHSI.
 NOTE: To show the RTE DATA, an active flight plan must be
____ in the FMC. If an active flight plan is not currently installed, you must stop the EFIS self-test to install it.
 (e)  On the right EFIS control panel, push each map mode display switch twice. 1) Make sure the symbols related to each switch are first
 removed, and then shown again on the right EHSI.
 NOTE: To show the RTE DATA, an active flight plan must be
____ in the FMC. If an active flight plan is not currently installed, you must stop the EFIS self-test to install it.
 (f)  On the two EFIS control panels, make sure all the map mode display switches are on.
 S 725-040
 (2)  Do a test of the WXR ON switch as follows:
 (a)  
Make sure the MAP mode test pattern is shown on the two EHSIs.

 (b)  
On the two EFIS control panels, make sure the WXR ON switch is on.

 (c)  
On the left EFIS control panel, push the WXR ON switch twice.

 1)  Make sure the weather radar test pattern is first removed, and then shown again on the left EHSI.

 (d)  
On the right EFIS control panel, push the WXR ON switch twice.

 1)  Make sure the weather radar test pattern is first removed, and then shown again on the right EHSI.
 S 725-041
 (3)  Do a test of the RANGE switch as follows:
 (a)  
Make sure the MAP mode test pattern is shown on the two EHSIs.

 (b)  
On the left EFIS control panel, set the RANGE switch to each available range position. 1) For each position, make sure the left EHSI display shows

 the correct range from the EFIS control panel.
 NOTE: The value of the range shown in the center of the
____ EHSI will be 1/2 the range on the EFIS control panel.
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A 737-300/400/500MAINTENANCE MANUAL
 (c)  On the right EFIS control panel, set the RANGE switch to each available range position. 1) For each position, make sure the right EHSI display shows
 the correct range from the EFIS control panel.
 NOTE: The value of the range shown in the center of the
____ EHSI will be 1/2 the range on the EFIS control panel.
 (d)  On the two EFIS control panels, set the RANGE switch to the 80 position.
 I. Put the Airplane Back to Its Usual Condition
 S 745-042
 (1)  
Push the INIT/REF key on the FMCS CDU to get out of the EFIS BITE.

 S 865-043

 (2)  
Remove equipment cooling if it is not necessary (AMM 21-58-02/501).

 S 865-044

 (3)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 TASK 34-22-00-735-045
 3. System Test - Electronic Flight Instrument System
_________________________________________________
 A. General
 (1)  The system test includes these tests of the EFIS:
　
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