Kta Fault Codes - Honeywell KMH 880 Installation Manual

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14. KTA Fault Codes

KTA FAULT CODES
DISPLAY FAILURE
HW BITE
FAULTS
A RAM address line stuck low, RAM on computer board
d RAM address line stuck high, RAM on computer board
F CPU reserved RAM data test
b Program memory – boot block checksum failure
H Program memory – main block checksum failure
C CPU instruction tests fail
F-01-01 RAM data (SPM) computer board RAM data not reliable
F-01-02 RAM data (CS, FT) computer board RAM data not reliable
F-01-03 RAM address stuck low
F-01-04 RAM address stuck high
F-01-05 EPROM Boot Error
F-01-06 EPROM Main error
F-01-07 EEPROM (on computer bd) checksum failure BITE CONSTANTS
F-01-08 EEPROM (on computer bd) checksum failure VIDEO CONSTANTS
F-01-09 Power Supply +6V voltage divider on IO bd reading out of spec
F-01-10 Power Supply +12V voltage divider on IO bd reading out of spec
F-01-11 Power Supply –12V voltage divider on IO bd reading out of spec
F-01-12 Power Supply +65V voltage divider on IO bd reading out of spec
F-01-13 Power Supply –250V voltage divider on IO bd reading out of spec
F-01-14 Power Supply +2.5V reference
F-01-15 CPU instruction error
F-01-16 Transmit power read on IO bd is reading out of spec
IO BITE
FAULTS
F-02-01 Top Antenna- matching resistor on IO bd not correct or 50Ω loads not connected
F-02-02 Bottom Antenna- matching resistor on IO bd not correct or 50Ω loads not connected
F-02-03 Baro Altimeter - 419/429 (computer bd) or Gillham data (IO bd) invalid based on selected source
F-02-04 Roll - 429 (computer bd) or Synchro (IO bd) data invalid based on selected source
F-02-05 Pitch - 429 (computer bd) or Synchro (IO bd) data invalid based on selected source
F-02-06 Heading (SPM) - 429 (computer bd) or Synchro (IO bd) data invalid based on selected source
F-02-07 Heading (CS) - 429 (computer bd) or Synchro (IO bd) data invalid based on selected source
F-02-08 Radio Altimeter (SPM) - 429 (computer bd) or Synchro (IO bd) data invalid based on selected
source
F-02-09 Radio Altimeter (CS) - 429 (computer bd) or Synchro (IO bd) data invalid based on selected
source
F-02-10 Display Integrity - One display valid line to TA #1must be valid (IO bd) when configured
F-02-11 Control Panel - 429 control data invalid (computer bd)
Rev 3, August/2002 10609I03.CDL
KMH 880/KTA 870
D-23