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MAINTENANCE MANUAL
ELECTRICAL AUTO
1234
AC VOLTS
EXT 1 APU 1 APU 2 EXT 2 AC-V 0 115 115 115 115 115 0 115 FREQUENCY
FREQ 0 400 400 400 400 400 0 400 AC LOAD
LOAD 0.00 0.73 0.75 0.75 0.75 0.75 0.00 0.65 MAIN BAT APU BAT DC-V 28 28282828 28
DC VOLTS DC-A CHG10 35 35 35 35 DIS10
DC AMPS
IDG OUT.TEMP 145 175 145 145 TEMPERATURE
IDG OUTLET
IDG RISE TEMP 35 35 35 35
IDG RISE TEMPERATURE
GEN 2 DRIVE DATE 02SFP90 GMI 18:54:04
EICAS Electrical Maintenance Display
Figure 53
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MAINTENANCE MANUAL
(4)
AC Load
(a) AC load for generators 1 thru 4, APU generators 1 and 2, and external power inputs 1 and 2 is displayed in units of percent rated load current.
(5)
DC Volts
(a) DC voltages for the main battery, dc buses 1 thru 4, and the APU battery are displayed in units of volts.
(6)
DC Current
(a) DC amperes for the main battery, dc buses 1 thru 4, and the APU battery are displayed in units of amperes. The annunciations CHG and DIS are displayed to indicate charging or discharging conditions.
(7)
Integrated Drive Generator (IDG) Outlet Temperature
(a) IDG outlet temperature is displayed for IDG buses 1 thru 4 in units of °C (Celsius).
(8)
Integrated Drive Generator (IDG) Rise Temperature
(a) IDG rise temperature is displayed for IDG buses 1 thru 4 in units of °C (Celsius).
G. EICAS Hydraulic Maintenance Display (Fig. 54)
(1)
General
(a)
Hydraulic parameters for reservoir pressure, quantity, pressure and temperature are presented for display.
(b)
Hydraulic quantity data and the discretes for the overfill, low quantity and refill conditions are received by the EIU on an ARINC 429 data bus from the Hydraulic Quantity Interface Module (HYQUIM).
(c)
Hydraulic temperature and pressures are received by the EIU on an ARINC 429 data bus from the Hydraulic Interface Module (HYDIM).
(2)
Reservoir Pressure
(a) The respective system reservoir pressure is indicated by textual symbology. For normal pressures, the message NORM is displayed above the respective system. For low pressure, the message LOW is displayed above the respective system. For invalid data, the associated reservoir pressure message is removed.
(3)
Hydraulic Quantity
(a) Hydraulic quantity for systems 1 thru 4 is displayed in scaled units (1.00 = 100% full). The messages OF (over full), LO (low quantity) and RF (refill) will be displayed to indicate high/low hydraulic quantity exceedances.
(4)
Hydraulic Pressure
(a) Hydraulic pressure for systems 1 thru 4 is displayed in units of psi.
(5)
Hydraulic Temperature
(a) Hydraulic temperature for systems 1 thru 4 is displayed in units of °C (Celsius).
H. EICAS Performance Maintenance Display (Fig. 55)
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HYDRAULIC AUTO
RESERVOIR
PRESSURE
1234 HYDRAULIC
RSVR PRESS LOW NORMNORMNORM QUANTITY
HYD QTY 0.10RF 0.75 0.75 1.32OF
HYDRAULIC HYD PRESS 3250 3250 950 3250
PRESSURE HYD TEMP 50 50 50 50
HYDRAULIC TEMPERATURE
SYS 3 HYD PRESS DATE 02SEP90 GMT 18:54:04
EICAS Hydraulic Maintenance Display
Figure 54
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