34-22-11
 ú ú 01 Page 403 ú Jul 15/95

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (b)  P18 Circuit Breaker Panel
 1) CAPT EHSI
 2) EFIS CONT PANEL L
 3) EFIS SYM GEN L

 S 864-036
 (6)  Make sure these circuit breakers are closed:
 (a)  
P6 Circuit Breaker Panel
 1) F/O EHSI
 2) LANDING GEAR AIR/GND RELAY & LIGHTS

 (b)  
P18 Circuit Breaker Panel
 1) FMCS CMPTR
 2) CDU NO. 1
 3) CDU NO. 2
 4) MODE ANN (or FMCS BITE)

 S 864-018
 (7)  Make sure the EFI transfer switch on the pilots' overhead panel, P5, is in the NORMAL position.
 E. EFIS Control Panel Test
 S 744-019
 (1)  
Push the INIT/REF key on the FMCS CDU.

 S 744-020

 (2)  
Push the line select key (LSK) 6L (<INDEX) on the FMCS CDU.

 S 744-021

 (3)  
Push the LSK 6R (MAINT>).

 (a)  Make sure the FMCS CDU display shows the MAINT BITE INDEX 1/1 page.
 S 744-022
 (4)  
Push the LSK 5L (<EFIS).

 (a)  Make sure the FMCS CDU display shows the EFIS BITE TEST page.

 (5)  
Push the LSK 3L (<SELF TEST).

 S 864-037

 (6)
Set the mode switch on the EFIS control panel to the PLAN position.

 S 744-023
 (a)  Make sure the related EHSI display shows the PLAN mode test pattern.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú

 34-22-11

 ú ú 01 Page 404 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-038
 (7) Set the mode switch on the EFIS control panel to the MAP position.
 (a)  Make sure the related EHSI display shows the MAP mode test pattern.
 S 744-026
 (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 864-027
 (1)
Remove equipment cooling if it is not necessary (AMM 21-58-02/501).

 S 864-028

 (2)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú

 34-22-11
 ú ú 01 Page 405 ú Jul 15/95

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 ELECTRONIC ATTITUDE DIRECTOR INDICATOR (EADI) - REMOVAL/INSTALLATION
____________________________________________________________________
 1.  General (Fig. 401)_______
 A.  Two EADIs 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 EADI has an electrical connection at the rear of the unit.
 NOTE:____Only one EADI should be removed at a time. When an EADI is installed, its inclinometer is adjusted to be the same as the inclinometer of the other EADI.
 If the two EADIs have to be removed at the same time, or if the inclinometer adjustments on the EADIs are possibly incorrect, it is necessary to level the airplane, and then adjust the inclinometers to the mid position (AMM 08-10-00, Leveling and Weighing).
 TASK 34-22-21-004-001
 2.  EADI Removal (Fig. 401)____________
 A.  References
 (1)  AMM 29-15-00/201, Hydraulic Power
 B.  Access
 (1)  Location Zones
 101/102 Flight Compartment

 C.  Procedure
 S 864-002
 (1)  
Make sure hydraulic power is removed from the flight controls (AMM 29-15-00/201).

 S 864-003

 (2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P6 Circuit Breaker Panel
 1) F/O EADI

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú
　
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