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General Classification

Print a communication

           Symptom

Referring to the printer

Paper is not output.

The picture is out of

order.

The picture was cut

off halfway.

                                          Hint

TEST : If only the print communication is NG and the other

            printing is OK, there is a high possibility that

            there is a problem in the digital board's modem

            and analog board bus.

The transmitted sending side's signal was not received.

  If the DTMF tone is not heard, change the IC5

  modem.

  If the DTMF tone is heard, there is a problem in the

  signal pass route.

                                           Another problem

Confirm the repair method in the DEFECTIVE FACSIMILE

SECTION. (Refer to page 38.)

A communication error

has arose.

The sending side's signal was cut during receiving.

Communication error causes :

    1. User (unit)

    2. Circuit condition

    3. Other party (unit)

It is possible that there are other causes than the user.

Try communication in redial a few times.

Also, try communication speed in 4800 bps or lower.

  Communication connection (modem)

 (Print defect in FAX communication)

Refer to the

error code

(Refer to page 45.)

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TX Problem

USER STOPPED 

Message on LCD

Was the STOP key 
pressed?

No problem.

• Need to service.
• Operation panel section
   (Refer to page 83.)

Is there paper jam?

Only some of document
went through?

ADF section

All of document went
through, but a communica-
tion result is the error.

Press down the READ 
SENSOR gently, and 
release it immediately.

Clean the separation
roller using a damp cloth.
And try again.
(Rubbing alcohol)

Replace the separation 
roller with a new one.

Need to service
• Check if the sensor is
   installed properly?

No pages were fed.

ADF section

YES

NO

NG

NO

NO

NG

NO

YES

YES

YES

OK

(Refer to page 27.)

(Refer to page 27.)

Sensor section page 84.

OK?

NO

YES

END

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TX Problem

If the document pre-fed?

Was auto dialing used to 
send?

Did you press the START 
key immediately after
dialing?

Decrease the TX
level from -10
dBm to - 15
dBm.

Check the other party's
machine. (Out of paper,
Auto answer off, etc.)

Check the TX level.

Change the "594: Oversea
DIS detection" to "Detect 
at the 2nd time".

Confirm that "592:CNG TX
select is set to "ALL".

Doesn't start TX.
(Doesn't start feeding?)

Increase the "596:Transmit
level set" from -10 dBm
to -5 dBm.

The document goes 
through.

Ask the other party to 
change the RX equalizer & 
increase the TX level.

Ask the other party to  
increase TX level.

Ask the RX party to 
increase the  parameter of 
the RX error line value to 
more than the current 
setting.

(Not available)

Confirm if the sent image 
on the RX side has many 
errors.

Change the "717:Transmit
speed select " to
7200,4800 or 2400 bps.

• Increase the "596:Transmit
  level set" from -10 dBm
  to -5 dBm. 
     OR
• Decrease the "596:Trans-
  mit level set" from -10 
  dBm to -12 dBm.

• Decrease the "596:Trans-
  mit level set" from -10 
  dBm to -15 dBm.

YES

YES

YES

YES

NO

NO

NO

NO

NG

NG

NG

OK

OK

OK

Transmit Error

Message on LCD

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Confirm the below before starting troubleshooting.
• Is the recording paper installed properly?

RX problem

Can you RX something 
anyway?

Are there many errors on 
the image?

Increase the "595: RX error
limit value".

Change the "718:Receive 
speed select" to 7200, 4800 
or 2400 bps.

Ask the sender to increase the
"596: Transmit level set".

Is the FAX ring count (#07)
2,3 or 4?

Change the FAX ring count 
to 1.

Increase the "593: Time 
between CED & 300 bps".

Is it error code No. 68 
(Echo)?

Decrease the "596:Transmit 
level set" from -10 dBm to - 
12 dBm.

Change the "718:Receive 
speed select" to 7200, 4800 or 
2400 bps.

Ask sender to change the 
following
• Increase the TX level.
• Change the TX equalizer.

No: Looks OK

NO

YES

NO

NO

YES

YES

YES

CHECK THERMAL PAPER
CHECK COVER
OVERHEATED (doesn't return automatically, COVER OPEN, etc., you must to reset)
PAPER JAM

Please refer to "2. User Recoverable Errors" (Refer to page 23.) for the above items.
Also, when it actually becomes a hardware deformity, please check each sensor.