3One data 7304 Gebruikershandleiding - Pagina 11

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6. 6. 6. 6. Common
Common
Problems
Common
Common Problems
Problems
Problems
No. Failure
1
PWR
power
indicator
lamp
lightening
2
LOF
out-of-frame
alarm lamp lightening
3
LOS data loss alarm
lamp lightening
4
TXD
lamp
lightening
Common
Common
Common Failures
Common
Cause
supply
1.Power supply not properly
not
connected
2.Protector tube damaged
3. -48V DC input tie-line in
reverse connection
4.Internal power supply circuit
with failure
1.Optic interface not clean
2.Optic fiber not well inserted
3.Wrong clock setting
4.Time slots of the devices at
two ends not conformance
5.Internal circuit damaged
1.
Optic
fiber
interconnection
2.Optic fiber not well inserted
3.Optic fiber broken
4.Internal circuit damaged
not
V.35
interface
connected or the router etc. not
turned on.
Failures
Failures
and
and
Solutions
Solutions
Failures and
and Solutions
Solutions
Solution
1.Check
2.Replace protector tube 3.Correct -48V
power supply line connection
4.Returned to the manufacturer for
repair.
1. Clean the connector of optic interface
2. Insert the SC connector in place
3. Refer to the description on rear panel
4. Returned to the manufacturer for
repair.
in
wrong
1. Correct the connection
2. Insert the SC connector in place
3. Check optic cable
4. Returned to the manufacturer for
repair.
not
well
1. Check the connecting line and
terminal device
Page 11 of 11
MODEL7304 User Manual
power
switch
and
jack