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93

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END

Is communication with
the reference unit
successful?

Is the unit transmitting or
receiving?

Yes

Transmitting

Receiving

No

Yes

No

Change Function 
Parameter #018:Reduce 
Rx Modem Speed

Does the problem still occur?

1. Replace the MJR PCB.
2. Replace the SC PCB.

Does the problem still
occur?

Change Function
Parameter #013: Increase
G3 Rx Equalization

Does the problem still
occur?

END

Does the problem still
occur?

Yes

Yes

No

Change Function 
Parameter #071: Increase
Error Tolerance

Change Function
Parameter #011: Reduce
Rx Sensitivity Level

Does the problem still
occur?

No

No

Yes

Yes

No

Does the problem still
occur?

Change Function
Parameter #010: Reduce 
Tx Attenuation Level

Change Function
Parameter #017: Reduce
Tx Modem Speed

The telephone line may have
a high level of white noise
and/or frequent impulse noise.
Ask the telephone company
to check the line.

Does the problem still
occur?

No

Yes

Yes

Yes

No

Check the telephone line
condition.

Change Function 
Parameter #014:Increase 
G3 Tx Equalization

Does the problem still
occur?

No

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END

Is communication with the
reference unit successful?

Does the trouble occur
regardless of the remote unit?

Yes

Yes

Yes

No

Replace the SC PCB.

No

Can the transmitter in
question transmit to the 
other units?

Check the remote unit in 
question.
(Remote unit is defective)

Change the parameter in Service Mode 1.
(Refer to Sect. 5.1.2.)
           for transmitter: #010: Increase Tx Level
       for receiver     : #011: Reduce Rx Sensitivity Level

The telephone line may have
a high level of white noise
and/or frequent impulse noise.
Ask the telephone company
to check the line.

No

95

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END

Check the line connection
between the telephone jack on
the wall and the MJR PCB.

Is communication with the
reference unit successful?

Yes

No

Yes

No

Does the problem still occur?

1. Replace the MJR  PCB.
2. Replace the SC PCB.

No

1. Check the remote unit in
    question.
    (Remote unit is defective)
2. Refer to Sect. 4.6.

If the telephone line frequently
disconnects at the beginning of
each communication, ask the
telephone company to check
the line.

Does the trouble occur
regardless of the remote unit?

END

Yes

Check the telephone line
condition.

96

START

Yes

No

Is the recording paper size and

thickness within specification?

Replace with correct paper.

Yes

No

Is the recording paper loaded in
the Cassette properly?

Load the paper correctly.

END

Check the Paper Feed Solenoid.

Is the paper cassette functional?

Yes

No

Replace the paper cassette.

Check the Paper Feed Roller
Assembly.

Check all Sensors and Actuators
(No Paper Sensor, Timing
Sensor, Paper Exit Sensor).