Klein 3000 Series Operation And Maintenance Manual page 183

Table C-2:
PROBLEM
After a cable problem and the correction of
the cable problem, the CARRIER LOSS and
LOCK LOSS lights are on.
After a cable problem and the correction of
the cable problem, the Carrier Loss and
Lock Loss lights are off, but the data on
SonarPro is breaking up.
After a cable problem and the correction of
the cable problem, the 200 VDC to the
towfish is reading around 300 VDC.
SonarPro operating slow over the network
with jittery display updates and large lag
numbers.
TPU will not boot.
Error in boot line.
Gibberish data.
"Can't load boot file!!" message.
Error messages.
Problem Troubleshooting
General Troubleshooting (Continued)
Check the towfish fuse.
Check the 200 VDC.
Check the TP7 and TP12 waveforms on
Multiplexer board.
Replace the Demultiplexer board in the TPU.
Check that R30 is 4.7 ohms on the Multiplexer
board in the towfish.
Check U2 on the Demultiplexer board.
Change the Demultiplexer board.
Replace the Power Supply.
Incompatibility with the TPU CPU and the
vxWorks software. Check the CPU version in
the TPU and the version of vxWorks software.
CPU versions 14103184 can only be used with
vxWorks version 5.11.1841 or higher.
CPU version 14102073, recognized by
unpopulated area near front of board, can only
be used with vxWorks version 5.5.0291 or
earlier.
Contact Klein Marine Systems, Inc. technical
support for more information.
The likely cause is the failure of the backup
battery on the CPU board.
Contact Klein Marine Systems, Inc. for a
replacement.
See "Replacing the CPU Battery" on page
C-42 for battery replacement instructions.
C-41
CHECK