Honeywell KLN 90B Installation Manual page 137

BENDIX/KING
GPS Rec. error
Codes
RCVR Hardware
Error: 1000
RCVR Hardware
Error: 2000
RCVR Hardware
Error: 8000
Rev 5, April/2003
Definition
RS-232 Channel 2
Failure: The second
RS-232 UART on the
receiver failed the
loop-back test. This
self-test can only be
enabled during test
mode on the receiv-
er, and should not be
seen in normal oper-
ation.
BBP Underflow: The
baseband process-
ing loop detected an
error in the 1 mS pro-
cessing loop.
BBP Overflow: The
baseband process-
ing loop detected an
error in the 1 mS pro-
cessing loop.
10521I05.TDC
Suggested Action
It could be one of the following, in the order of prob-
ability:
1. The receiver was put in test mode without looping
back the two serial ports.
2. Bad ASIC or Microprocessor on the Receiver
Board.
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 TCXO, MMIC, or ASIC on the Receiver
Board.
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 TCXO, MMIC, or ASIC on the Receiver
Board.
KLN 90B
Page C-5