S 864-020
(3)
Make sure the STANDBY POWER switch on the pilots' forward overhead panel is in the AUTO position.
S 914-021
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 system
(AMM 21-58-02/501).
S 864-023
(5)
Close these circuit breakers and remove the DO-NOT-CLOSE tags:
(a)
P6 Circuit Breaker Panel
1) F/O EADI
2) EFIS SYM GEN R
(b)
P18 Circuit Breaker Panel
1) CAPT EADI
2) EFIS SYS GEN L
S 864-037
(6) Make sure these circuit breakers are closed:
(a)
P6 Circuit Breaker Panel
1) EFIS CONT PANEL R
2) LANDING GEAR AIR/GND RELAY & LIGHTS
(b)
P18 Circuit Breaker Panel
1) EFIS CONT PANEL L
2) FMCS CMPTR
3) CDU NO. 1
4) CDU NO. 2
5) MODE ANN (or FMCS BITE)
S 864-026
(7) Make sure the EFI transfer switch on the pilots' overhead panel, P5, is in the NORMAL position.
E. EADI Test
S 744-027
(1)
Push the INIT/REF key on the FMCS CDU.
(2)
Push the line select key (LSK) 6L (<INDEX) on the FMCS CDU.
S 744-028
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú
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A 737-300/400/500MAINTENANCE MANUAL
S 744-029
(3) Push the LSK 6R (MAINT>).
(a) Make sure the FMCS CDU display shows the MAINT BITE INDEX 1/1 page.
S 744-030
(4) Push the LSK 5L (<EFIS).
(a) Make sure the FMCS CDU display shows the EFIS BITE TEST page.
S 744-031
(5)
Push the LSK 3L (<SELF TEST).
S 864-040
(6)
Set the mode switch on the EFIS control panel to the PLAN position.
(a) Make sure the related EADI display shows the PLAN mode test pattern.
S 864-041
(7) Set the mode switch on the EFIS control panel to the MAP position.
(a) Make sure the related EADI display shows the MAP mode test pattern.
S 744-034
(8) Push the INIT REF key on the FMCS CDU to get out of the EFIS BITE.
F. Put the Airplane Back to Its Usual Condition
S 864-035
(1)
Remove equipment cooling if it is not necessary (AMM 21-58-02/501).
(2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 864-036
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A
737-300/400/500MAINTENANCE MANUAL
ELECTRONIC HORIZONTAL SITUATION INDICATOR (EHSI) - REMOVAL/INSTALLATION
_______________________________________________________________________
1. General (Fig. 401)_______
A. Two EHSIs are installed in the airplane, one on each pilot's instrument panel. Each unit is installed on a mounting tray and held by a hinged mounting assembly and two mounting screws. Each EHSI has an electrical connection at the rear of the unit.
TASK 34-22-31-004-001
2. EHSI Removal (Fig. 401)____________
A. References
(1) AMM 29-15-00/201, Hydraulic Power
B. Access
(1) Location Zones
101/102 Flight Compartment
C. Procedure 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 导航 NAVIGATION 1(140)
