Problem Troubleshooting - Klein 3000 Series Troubleshooting Manual

SYSTEM 3000 OPERATIONS AND MAINTENANCE MANUAL
4.36

PROBLEM TROUBLESHOOTING.

Problem:
No operation, but the Lock Loss
and Carrier Loss lights are off.
TPU not functioning properly for no
apparent reason.
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.
L-3 Klein Associates, Inc.
Check:
Hub.
LAN cables.
Path and location path to vxWorks.
Network setup on the computer and
TPU.
Check for proper AC voltage setting.
Check AC fuses.
Replace Boards one at a time.
Check the towfish fuse.
Check the 200 volts DC.
Check TP7, and TP12 wave forms
on Multiplexer board.
Check the Diodes in the Hybrid
circuit.
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.
Check diodes D7, D8, D9, D10 and
check that R11 is reading 4.7 ohms
on the TPU 200 VDC power supply.
TROUBLESHOOTING GUIDE 4-69