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102

START

Plug the Power Cord in and turn
the Power Switch ON.

Does the LCD display function
correctly?

Does the original document feed
through correctly?

Does the recording paper exit the
unit?

Troubleshoot printed copy quality
problems (Sect. 4.4).

Troubleshoot the Document
Feeder (Sect. 4.5).

Check for recording paper path
problems.

Troubleshoot Improper LCD
Display (Sect. 4.2).

Troubleshoot any 3-digit
INFO. CODE displayed
(Sect. 4.3).

Does  the unit produce normal
copies?

Troubleshoot communication

problems (transmission, reception,

dialing, polling, information codes,

or diagnostic codes.) (Sect. 4.6-4.8)

Does the unit power up normally?

Yes

Yes

Yes

Yes

No

No

No

No

Yes

No

103

Check connectors: CN11
(FCB PCB) and CN40

Was Firmware Update interrupted 
before completion?

Does CN11, pin3, on the FCB
PCB measure +5VDC?

Replace the FCB PCB.

Replace the Panel PCB.

Yes

No

No

Follow the instruction on how to recover 
from Firmware Update failure.  (Sect.5.9.3) 

Yes

START

END

(PNL1 PCB).

104

The 3-digit information codes display to show the unit’s status. These codes also print on the journal. The following table indicates 
appropriate sections for troubleshooting.

Phase A: Call establishment
Phase B: Pre-message procedure
Phase C: Message transmission
Phase D: Post-message procedure
Phase E: Call release

001-003

Recording paper jam

C

4.3.8

007-008

Recording paper jam

C,D

4.3.8

010

No recording paper

B,C

4.3.9

030

Document misfeeding

B

4.3.10

031

Document too long

C

4.3.10

400

Transmission error

B

4.3.1

401

Transmission error

B

4.3.2

402

Transmission error

B

4.3.2

403

Polling reception error

B

4.3.12

404

Transmission error

B

4.3.3

405

Transmission error

B

4.3.3

407

Transmission error

D

4.3.3

408

Transmission error

D

4.3.5

409

Transmission error

D

4.3.5

411

Polling reception error

B

4.3.12

414

Polling reception error

B

4.3.12

415

Remote side mis-operation

B

4.3.12

416

Reception error

D

4.3.4

417

Reception error

C

4.3.5

418

Reception error

C

4.3.5

420

Reception error

B

4.3.1

422

Transmission error

B

4.3.2

434

Signal noise level too high

B

4.3.6

459

Reception error

C

4.3.7

490

Reception error

C

4.3.5

494

Reception error

C

4.3.7

495

Reception error

C

4.3.7

630

Remote unit busy

B

4.3.11

634

No busy tone detected

B

--

Phase A

Phase B

Phase C

Phase D

Phase E

Message

Transmission

Facsimile Communication Procedure

Facsimile Call

105

START

400

END

END

Enable the monitor speaker.
(Refer to Sect. 5.2 Parameter
No. 008)

Does the remote unit repeat
the 300 bps signal every 3
sec.?

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

    (Remote unit is defective)
2. Check the telephone

1. Check the remote unit.

    number to the remote unit.

Perform a transmission test to
the remote unit in question.

Does the remote unit send the
CED and 300 bps Fax signal ?

Is transmission to the
reference unit successful?

1. Replace the LCU/LCE PCB.
2. Replace the FCB PCB.

Does the trouble still occur?

Yes

Yes

Yes

No

No

No

Yes

No

START

420

END

2. Check the remote unit.

1. Misdialed call.

    (Remote unit is defective)
3. Refer to Sect. 4.6.

Check the line connection
from the wall jack to the "Line"
on the LCU/LCE PCB.

Is reception from a reference
unit successful?

Replace the FCB PCB.

Yes

No