Honeywell KLN 90B Installation Manual page 136

BENDIX/KING
GPS Rec. error
Codes
RCVR Hardware
Error: 0010
RCVR Hardware
Error: 0080
RCVR Hardware
Error: 0100
RCVR Hardware
Error: 0400
RCVR Hardware
Error: 0800
Page C-4
Definition
RF Failure: This
means the receiver is
not sensing a proper
RF signal from the
satellites/antenna.
ASIC Failure: The
GPS Correlator
ASIC failed self-test.
BBP Timeout: The 1
mS baseband pro-
cessing timer failed
self-test.
RS-232 Receive
Failure: The GPS
Receiver did not re-
ceive any initializa-
tion data from the
host computer on the
RS-232 port.
EEPROM Failure:
The EEPROM failed
sum-check self-test
10521I05.TDC
Suggested Action
It could be one of the following, in the order of prob-
ability:
1. Coax open or shorted. Confirm the 5 volts at the
antenna end.
2. Bad antenna. Substitute the antenna, or inject a
signal at the coax.
3. Bad Receiver Module in GPS. Substitute the GPS
unit, or inject a signal at the input.
It could be one of the following, in the order of prob-
ability:
1. The flex cable between the Receiver Board and
Main Board may have come out of the socket in the
GPS.
2. Bad ASIC on the Receiver Module in the GPS.
Substitute the GPS unit.
It could be one of the following, in the order of prob-
ability:
1. The 5 volt supply to the antenna could be shorted
out in the coax. This disables the oscillator in the
GPS.
2. The flex cable between the Receiver Board and
Main Board may have come out of the socket in the
GPS.
3. Bad TCXO or ASIC on the Receiver Module in the
GPS. Substitute the GPS unit.
It could be one of the following, in the order of prob-
ability:
1. The flex cable between the Receiver Board and
the Main Board may have come out of the socket in
the GPS.
2. Bad 32kHz crystal, UART, or processor on the Re-
ceiver Module in the GPS. Substitute the GPS unit.
Bad EEPROM. Return for service.
KLN 90B
Rev 5, April/2003