Yamaha SRCD User Manual download pdf (Page 38)

32

CHAPTER2 Ethernet Unit

Checkpoints

• Check the TELNET parameter to find

if it was set to stop operation during

logout.

• Check the TELNET parameter to find

if communication status is longer than

the time set for timeout.

• Check if a cable is detached or power

supply for the HUB or other equipment

is off.

• Check if operating problems are

occurring in devices such as the HUB

due to noise, etc.

• Too short of a period was set for the

no-response timeout period.

• Try substituting with another Ethernet

unit.

Action

• Always use a LOGOUT or BYE

command to terminate a TELNET

communication.

• Reset the parameter so operation

continues during logout.

• Set so communication time does not

exceed the timeout limit. Otherwise

increase the communication timeout

period or disable the timeout function.

• Check the network and repair/restore

any problem locations.

• Replace a device having operating

errors with another device.

• Set the no-response timeout period to

match the network structure and traffic

conditions. Or disable the timeout

function.

• If operation returns to normal, then the

Ethernet unit is defective so replace it.

No.

4

Probable causes

TELNET

communication

cuts off by itself

without a

LOGOUT or

BYE command

being issued.

TELNET

parameter was

set to stop

operation during

logout.

Communication

status continues

for a fixed period

and then cuts off

automatically at

timeout.

No-response

status continues

for a fixed period

versus the keep-

alive packet and

then cuts off

automatically at

timeout.

Ethernet unit is

defective.

1)

2)

3)

4)

5)

Symptom

Program

stops by itself

during

automatic

operation.

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