DATA STATUS BLOCK TITLE BLOCK FOURTEEN 24-CHARACTER
LINE SELECT KEYS
LINE SELECT KEYS (LSK) LEFT
(LSK) RIGHT

1L 1R
2L 2R
3L 3R
4L 4R
5L 5R
6L 6R
SCRATCH PAD/ MESSAGE BLOCK DATA BLOCK
INIT REF KEY ANNUNCIATORSANNUNCIATORS REMOVAL/INSTALLATION HANDLE

Flight Management Computer System Control Display Unit
Figure 501

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A
737-300/400/500MAINTENANCE MANUAL
 (4)  To get out of the FMCS BITE, push the LSK 6L <INDEX until you get back to the MAINT BITE index page. Also, the BITE is stopped when you push the INIT/REF key on the CDU.
 TASK 34-22-00-715-001
 2. Operational Test - Electronic Flight Instrument System
______________________________________________________
 A. Equipment
 (1)  
Flashlight

 (2)  
Black tape

 B. References
 (1)  
AMM 21-58-02/501, EFIS Cooling System

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

 C. Access
 (1)  Location Zones
 211/212 Flight Compartment

 D. Prepare for the Operational Test
 S 865-002
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-003

 (2)  
Make sure the BAT switch on the pilot's forward overhead panel is in the ON position.

 S 865-004

 (3)  
Make sure the STANDBY POWER switch on the pilot's forward overhead panel is in the AUTO position.

 S 915-005
 CAUTION: MAKE SURE THAT YOU OPERATE THE EQUIPMENT COOLING SYSTEM
_______ BEFORE YOU ENERGIZE AN ELECTRONIC SYSTEM. TOO MUCH HEAT CAN CAUSE DAMAGE TO ELECTRONIC EQUIPMENT.
 (4)  Supply the cool air from the equipment cooling equipment (AMM 21-58-02/501).
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737-300/400/500MAINTENANCE MANUAL
 S 865-006
 (5)  Make sure these circuit breakers are closed:
 (a)  
P6 Circuit Breaker Panel
 1) EFIS CONT PANEL R
 2) EFIS SYM GEN R
 3) F/O EADI
 4) F/O EHSI
 5) LANDING GEAR AIR/GND RELAY & LIGHTS

 (b)  
P18 Circuit Breaker Panel
 1) EFIS CONT PANEL L
 2) EFIS SYM GEN L
 3) CAPT EADI
 4) CAPT EHSI

 S 865-009
 (6)  
Make sure the EFI transfer switch on the pilot's overhead panel, P5, is in the NORMAL position.

 S 865-010

 (7)  
On the left and right EFIS control panels, set the controls as follows:

 (a)  
The RANGE switch to the 80 position.

 (b)  
The map mode display switches to the off position.

 (c)  
The WXR ON switch to the off position.

 (d)  
The EADI and EHSI BRT (brightness) controls to the usual brightness level.

 E. EFI Transfer Switch Test
 S 865-011
 (1)  Make sure this circuit breaker is closed:
 (a)  P18 Circuit Breaker Panel
 1) INSTR XFR

 S 865-012
 (2)  Make sure the EFI and IRS transfer switches on the pilot's overhead panel, P5, are in the NORMAL position.
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A 737-300/400/500MAINTENANCE MANUAL
 (3)  S 865-016Set the two mode switches on the IRS mode select unit (MSU) to the ATT position.
　
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