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FWC #2 CP B-13 ESS DC Bus (3)
DAU #1A CP A-14 ESS DC Bus
DAU #2A CP B-14 ESS DC Bus (4)
DAU #1B CP C-14 ESS DC Bus (3)
DAU #2B CP D-14 ESS DC Bus
SPZ-8000 SHUT DN (5) (6) CP L-4 R MAIN DC Bus
TONE WARN #1 P A-5 ESS DC Bus
TONE WARN #2 P B-5 R MAIN DC Bus
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS 2A-31-00
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Revision 6
NOTE(S):
(1) R MAIN DC bus on SPZ-8000 equipped airplanes.
(2) L MAIN DC bus on SPZ-8000 equipped airplanes.
(3) R MAIN DC bus on SPZ-8000 equipped airplanes.
(4) L MAIN DC bus on SPZ-8000 equipped airplanes.
(5) CB installed on airplanes SN 1156 and subs, and SN 1000-1155 with
ASC 92A.
(6) CB labeled “SPZ-8400 SHUT DN” on SPZ-8400 equipped airplanes.
CB labeled “SPZ-8000 SHUT DN” on SPZ-8000 equipped airplanes (when
installed by ASC 92A).
B. Warning (Red) CAS Messages:
CAS Message: Cause or Meaning:
DAU 1-2 MISCMPMSG
Miscompare between data channels of a serious nature.
ENGINE
EXCEEDANCE (1)
LP, HP or TGT above limits.
NOTE(S):
(1) SPZ-8000 equipped airplanes with ASC 415 and SPZ-8400 equipped
airplanes.
C. Caution (Amber) CAS Messages:
CAS Message: Cause or Meaning:
DAU 1-2 MISCMP ENG Engine data miscompare between DAU ’A’ and ’B’
channels.
DAU 1-2 MISCMP
MSG
EICAS amber message miscompare between DAU ’A’ and
’B’ channels.
D. Advisory (Blue) CAS Messages:
CAS Message: Cause or Meaning:
APU EXCEEDANCE Fault warning computer has recorded an exceedance.
BC 1-2-3 TEST FAIL Bus controller power-up self test has failed.
BUS CTLR 1-2-3 FAIL Indicated bus controller has failed.
DAU 1A-1B-2A-2B FAIL Indicated DAU channel has failed.
DAU 1-2 MISCMP
MSG
EICAS blue message miscompare between DAU ’A’ and
’B’ channel.
ENGINE
EXCEEDANCE (1)
Fault warning computer has recorded an exceedance.
EXCEEDANCE
RECORD (2)
FWC 1-2 FAIL Indicated fault warning computer has failed.
MAINT SWITCH ON Maintenance switch is on.
T&L >80% FULL (2) Fault warning computer memory is greater than 80% full.
TONE GEN 1-2 FAIL
(3) Aural warning tone generator has failed.
OPERATING MANUAL
2A-31-00 PRODUCTION AIRCRAFT SYSTEMS
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January 31/02
Revision 6
NOTE(S):
(1) Deleted by ASC 415 on SPZ-8000 equipped airplanes.
(2) SPZ-8000 equipped airplanes with ASC 415 and SPZ-8400 equipped
airplanes.
(3) Presented as TONE GEN FAIL on SPZ-8000 equipped airplanes.
4. Limitations:
A. Flight Manual Limitations:
The are no Flight Manual limitations for the central warning system at the
time of this revision.
B. System Notes:
(1) Bus Controllers:
The bus controller self-test will fail if power is momentarily removed
from both fault warning computers after the bus controllers are
powered. If this occurs, the system can be reset and the message
cleared by reapplying power to the airplane in the normal power-up
sequence or by pulling and resetting all three bus controller circuit
breakers.
(2) Exceedance Recording:
It is possible that display of the blue APU EXCEEDANCE, ENGINE
EXCEEDANCE or EXCEEDANCE RECORD advisory messages
could be caused by a fire. The flight crew should be alert for other
indications of fire and take appropriate action as necessary.
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OPERATING MANUAL
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2A-31-00 PRODUCTION AIRCRAFT SYSTEMS
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Warning/Caution Inhibition
Panel
Figure 11
OPERATING MANUAL
2A-31-00
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Maintenance Test Switch
Figure 12
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS 2A-31-00
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Revision 6
Snapshot Switch
Figure 13
OPERATING MANUAL
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Revision 6
2A-31-50: Central Display System
1. General Description:
The Gulfstream IV central display system provides the flight crew a means to
observe visual displays of conditions in selected systems. To enhance system
operation, six (6) Display Units (DUs) present integrated data including Primary
Flight Display (PFD) data, Navigation Display (ND) data, Engine Instruments (EI)
data and Crew Alerting System (CAS) data. PFD, ND and EICAS presentations
can be further categorized as:
• Pitch and roll attitude
　
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