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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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02/26/21

Message Overview:

Message Name:

INVALID CONFIG STRAPPING

Message Code:

B3-007006

Associated CAS:

None

Reporting LRU: ISI
System Description: 34-12-00
Schematic Diagram: 34-12-00
Wiring Diagram: 34-12-01

Message Description:

The optional mode strapping is not valid. A wire is either not connected or shorted.

Possible Causes:

  • Integrated Standby Instrument (ISI) (A90)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

On ISI V2 (Post SB100-34-29 or 20501 - 20999), maintenance page is shown during 10 seconds after power up. Make sure selected options are shown.

Quick Links:

Removal of the Integrated Standby Instrument AMM 34-12-01-000-801
Installation of the Integrated Standby Instrument AMM 34-12-01-400-801
Functional Test of the Integrated Standby Instrument AMM 34-12-01-720-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Do wiring check between ISI and terminal module. Repair as required.

    PIN FUNCTIONS STATE
    n ILS GND
    p MACH GND
    q SKID/SLIP GND
    r P.BARO UNIT GND
    s P.BARO UNIT GND
    k Parity OPEN

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  2. Replace ISI.
  3. Do close out.

isi

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