5-1
701 Digital Link
0004809_REV_F
5.0
TROUBLESHOOTING
In the unlikely event that the system requires troubleshooting, this section provides instructions for
disassembling and reassembling the unit, along with tips for identifying and correcting operational
problems.
For questions or guidance with using this section, contact
5.1
701-DL Digital Link Troubleshooting Guide
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
The green POWER
indicator on the
topside does not
illuminate when the
unit is turned on.
The POWER switch is not turned
on.
Verify the POWER switch is on.
No AC power. When using the AC
power connector.
Verify that the topside processor is connected to
AC power. Check the AC power source. Verify that
the fuse is good.
5 amp Fuses on the rear panel of
topside ac connection bad.
Check fuses for continuity. Replace if necessary.
The indicator is not operating.
Open the topside processor and check the indicator
and wiring.
The Green LAN
indicator on the
topside does not
illuminate when the
unit is turned on.
There is no connection between
the topside and the computer.
Check LAN connections between topside and
laptop.
The indicator is not operating.
Open the topside processor and check the indicator
and wiring.
Green LINK indicator
on the topside flashes
when the topside is
turned on. After 1-
minute flashing should
stop, and the indicator
should remain lit.
Tow cable between topside and
Towfish is disconnected or faulty.
Check connections and tow cable.
Modem settings on the topside
are incorrect.
Refer to the manual for modem settings.
4205 Towfish is faulty.
Check topside on different Towfish.
Table 5-1: 701-DL Digital Link Troubleshooting Guide.
