F/O EHSI 1) EADI EUROPEAN FORMAT (FMA AT TOP) 2) SINGLE CHANNEL ANNUNCIATION3) FD 1 OR FD 2 SELECT
L-EFIS SG INPUTS USED FROM:
A. MCP-1 BUS
SEL CRS NO. 1 (DEFAULT)
SEL HDG (DEFAULT)
B. FCC-L BUS
F/D ON/OFF
F/D PITCH/ROLL
AIRSPEED BUG DRIVE
A/P MODES & STATUS
LOC - G/S DEV WARN
SEL HDG
SEL CRS NO. 1
EFIS Symbol Generator - FCC/MCP Inputs
Figure 13
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A
737-300/400/500
MAINTENANCE MANUAL
AUTO THROTTLE EFIS SG - RIGHT
COMPUTER
SIGNAL TYPES: A/T DIGITAL DATA BUS - LO-SPEED ARINC 429 A/T INSTALLED AND THROTTLE HOLD - ANALOG DISCRETES
EFIS Symbol Generator - Autothrottle Computer Inputs
Figure 14
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A 737-300/400/500MAINTENANCE MANUAL
28V DC
STBY BUS ADF-1 ON
ADF-1 DC ADF CONT ADF-2 ON
PNL-1
ADF-1
115V AC BEARING
STBY BUS
ADF-1 DC
ADF-1 EXC 26V AC
P18-1 CB PANEL XFMR REF-1
ADF-2
BEARING
ADF BEARING
26V AC
REF-2
26V AC REF PROGRAM
PIN
OPTIONS
ADF POWER
EFIS SG - LEFT
ADF RCVR 1
28V DC
STBY BUS
2 ADF-2 DC
ADF CONT
PNL-1 26V AC
REF-1
ADF-2 DC2 STBY BUS 115V AC REF-2 26V AC
ADF-2 EXC
P6-1 CB PANEL XFMR ADF-1
BEARING
ADF BEARING ADF-2
BEARING
26V AC REF
ADF-1 ON
ADF POWER ADF-2 ON
PROGRAM
ADF RCVR 2 PIN
OPTIONS
SIGNAL TYPE: ADF BEARING - SYNCHRO
ADF 1 ON - DISCRETE EFIS SG - RIGHT
ADF 2 ON - DISCRETE
PROGRAM PIN OPTIONS:
1) ANALOG OR DIGITAL ADF
2) 1 OR 2 ADF SYSTEMS
3) ADF POINTER IN MAP & PLAN
ADF POINTER (VOR & ILS MODES) ADF VECTOR (MAP & CTR MAP MODES)
CAPT EHSI
ADF POINTER (VOR & ILS MODES) ADF VECTOR (MAP & CTR MAP MODES)
F/O EHSI
EFIS Symbol Generator - ADF Inputs
Figure 15
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737-300/400/500MAINTENANCE MANUAL
(3)
ADF-1 bearing analog signal
(4)
ADF-2 bearing analog signal
(5)
26V AC ADF-1 reference signal
(6)
26V AC ADF-2 reference signal
B. When the EHSI is displaying VOR/ILS data, bearing to the ADF station, tuned on the ADF control panel, will be represented by ADF pointers.
C. In the MAP mode, the display of ADF bearing can be enabled by the VOR/ADF map mode display switch. In this mode, the bearing to the ADF station, tuned on the ADF control panel, will be represented by ADF vectors and identifiers.
21. EFIS - Ground Proximity Warning Computer Interface (Fig. 16)__________________________________________________
A. The ground proximity warning computer provides a windshear alert discrete to the symbol generators. The windshear alert is displayed on both EADIs.
22. EFIS - Symbol Generator Selection (Fig. 17)_________________________________
A. Information from each symbol generator can be displayed on the captain's or first officer's display units. The source of the information to the display units is controlled by the EFIS transfer switch (EFI transfer switch).
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