Appendix Atroubleshooting - Patton electronics 1180/35 User Manual

Figure 7. Local and Remote Loopback Test Modes
5.4 POWER-DOWN
Turn off the Model 1180/35 by simply unplugging the AC power
adapter from the wall. There is no power switch on the Model 1180/35.
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APPENDIX A
TROUBLESHOOTING
SYMPTOM PROBLEM
1. Loose power
LEDs do not light
connection
when AC power
transformer is
2. Outlet is defective
plugged into wall
3. AC power cord is
defective
4. AC transformer is
not plugged into the
Model 1180/35
1. If CD is low,
Carrier Detect (CD)
possible
LED is low
synchronization loss
or
Carrier Detect (CD)
LED is high, but
2. Test Mode switch is
1180/35s are not
in the wrong position
communicating
3. DIP switches are set
improperly
4. Fiber link is
connected improperly
5. V.35 connections
are faulty or cables are
pinned wrong
SOLUTION
1. Make sure the AC
connection is flush
2. Try a different outlet
3. Remove the cord
from the outlet and
check for continuity
4. Have another cup of
coffee!
1. Check for ongoing
power loss or break in
fiber if CD does not go
high within 60
seconds
2. Be sure the Test
Mode switch is set to
NORMAL on both
Model 1180/35s
3. Check all DIP switch
settings, esp. Reset
and Data Rate,
against those in
Section 3; make sure
both 1180/35s are set
the same way
4. Check the ST or
SMA connection on the
back of both 1180/35s
5. Check V.35 cable
continuity and pinning
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