Troubleshooting - Prevail-Catv WT-1550-EM20 Series Operating Manual

6.2 Troubleshooting

Should a problem occur, see if the symptoms are listed in Table 6-1.
Table 6-1: Troubleshooting Solutions
Indicator
Alarm menu content
status
Power
Power Invalid
indicator is
LEFT (RIGHT)
yellow
-5V Status HIGH (LOW)
Power +5V Status HIGH (LOW)
indicator is +12V Status HIGH (LOW)
flash yellow -12V Status HIGH (LOW)
+24V Status HIGH (LOW)
RF IN Status
LOW (HIGH)
RF indicator
is flash red
CSO Initialization failed
Laser
Laser TEC
indicator is
flash red
OutPutPower Status
HIGH (LOW)
None
Rev1.1 190510 www.prevail-catv.com
No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.
phenomenon
The left (right)
power is break
down or the power
cord is not
plugged in
Power alarm
menu shows one
of the contents
The laser is off
RF input is
low (high)
CSO nonlinearity
indexes are poor
Laser Bias
The laser is off
HIGH
The laser is off
HIGH
The laser is off
The optical output
power is lower
None
than the nominal
value
Fault
Plug in the left (right) power cord. If
that does not correct the problem,
contact Customer Service. Replace
the power supply.
Contact Customer Service.
Verify the optical transmitter is
operating within the proper input level
threshold range,
If that does not solve the problem,
contact Customer Service.
Disconnect the RF connection, wait 10
seconds before reconnecting the RF
signal.
Contact Customer Service.
Verify that the unit is operating within
the proper temperature range (-5～
+45℃).
Verify that nothing is obstructing
airflow through the openings in the
front and back of the unit.
Recall factory settings by pressing the
key on the front panel (see Section 3).
If that does not correct the problem,
contact Customer Service.
Reboot the equipment. If that does not
correct the problem, contact Customer
Service.
Check the fiber connector.
Follow the connector cleaning
procedure (see Section 6.1).
If that does not correct the problem,
contact Customer Service.
Manual of Prevail
Solution
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15