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Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.

NO

1

1-1

Has the HDD been partitioned?

Does not boot from HDD.

Go to No. 1-2
Improper setting

YES

NO

2

2-1

Has the HDD been formatted?

Cannot read from HDD.
Cannot write to HDD.

Go to No. 2-2
HDD format

YES

NO

3

3-1

3-2

Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?

Replace the HDD.
Does operation return to
normal?
Replace the LED PCB.
Does operation return to
normal?
Replace the Main PCB.
Does operation return to
normal?

Damage to data written to
HDD.
Damage to data read from
HDD.
HDD contents are
destroyed.

HDD

Go to No. 3-2

YES

5

5-1

5-2

5-3

5-4

Has the HDD been
configured in the OS?

Access lamp does not
light.

Go to No. 5-2

Improper setting

YES

NO

4

4-1

Replace the HDD.
Does operation return to
normal?

Dignositic Test reports
problem in HDC or HDD.

6

6-1

Replace the HDD.

Abnormal sound.

HDD

2-2

2-3

Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?

HDD

Go to No. 2-3

YES

NO

1-2

Are there system files on the
HDD?

Go to No. 1-3
Software on the
HDD

YES

NO

1-3

1-4

Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?

HDD

HDD cable

Go to No. 1-4

Main PCB

IC11

YES

YES

NO

NO

HDD cable

Main PCB

IC11

YES

NO

HDD cable

Main PCB

IC11

YES

NO

HDD

Main PCB

IC11

YES

NO

HDD

Go to No. 5-3

YES

NO

LED PCB

Go to No. 5-4

LD2

YES

NO

Main PCB

HDD cable

IC11

YES

NO

7

Hard disk failure

Does executing FDISK
correct the problem?

7-1

HDD cable

YES

Main PCB

NO

IC11

Go to No. 7-2

NO

Format data
destroyed

YES

Replace the HDD.
Does operation return to
normal?

7-2

Go to No. 7-3

NO

HDD 

YES

Replace the HDD cable.
Does opration return to
normal?

7-3

Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.

HDD cable

YES

Main PCB

NO

IC11

8-2

8-3

8

Format data
destroyed

Does executing FDISK
correct the problem?

YES

Go to No. 8-2

NO

8-1

An operating system could
not be found

HDD 

Replace the HDD.
Does operation return to
normal?
Replace the HDD cable.
Does operation return to
normal?

YES

Go to No. 8-3

NO

1-2

Is the same transmission
protocol set for both the
sending and receiving units?

YES

YES

NO

NO

1

Data cannot be sent or
received.

Unit will not communicate
with another computer
when connected directly.

Does the RS-232C on the
Main PCB operate normally
under a loopback test?

1-3

Is the connection cable a
dedicated cross-patched
cable?

2-1

Is the same transmission
protocol set for both the
sending and receiving units?

2-2

1-1

Is the COM port properly
set?

YES

Go to No. 1-2

NO

Improper setting

2

Unit will not communicate
with modem.

3

Go to No. 1-3

Check the
interface with the
other computer

Main PCB

IC18
IC19

Improper setting

YES

NO

Go to No. 2-2

Connection cable

YES

NO

Go to No. 2-3

Improper setting

Is the COM port properly
set?

3-1

YES

NO

Go to No. 3-2

Improper setting

YES

NO

Does the RS-232C on the
Main PCB operate normally
under a reverse test?

2-3

Check the
interface with the
other computer

Main PCB

IC18
IC19

Is the trasmission protocol
correct?

3-2

YES

NO

Go to No. 3-3

Improper setting

Does the modem operate
normally under a local
analog loopback test?

3-3

YES

NO

Line

Go to No. 3-4

Does the RS-232C on the
main board operate normally
under a loopback test?

3-4

YES

NO

Modem

Main PCB

IC18
IC19

Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.

Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.

1

Data does not print from
the printer.

1-1

Does the printer pass its
self-printing test?

YES

Main PCB (CF-VEB071)

IC3

NO

Printer

2-2

Is the Parallel Port (Data
Direction) setting correct?

YES

Main PCB (CF-VEB071)

IC3

NO

Improper setting

2

Data prints out incorrectly.

2-1

Does the printer pass its
self-printing test?

3

The unit hangs after
outputting data from the
printer.

3-1

Replace the Main PCB.
Does operation return to
normal?

YES

Go to No. 2-2

NO

Printer

YES

Main PCB (CF-VEB071)

IC3

NO

Printer

4

Print area is out of line.

4-1

Does the printer pass its
self-printing test?

YES

Main PCB (CF-VEB071)

IC3

NO

Printer

5

Data is printed all on one
line.
(Carriage return does not
work.)

4-2

Does the printer pass its
self-printing test?

YES

Main PCB (CF-VEB071)

IC3

NO

Printer

1

Access lamp of CDD does 
not light.

1-1

Replace the CD-ROM drive.
Does operation return to
normal?

YES

CD-ROM drive

NO

Go to No. 1-2

2-2

Replace the CD-ROM drive.
Does operation return to
normal?

YES

CD-ROM drive

NO

Main PCB

IC11

2

Cannot read from DVD.

2-1

Replace the media.
Does operation return to
normal?

3

Tray does not open.

3-1

Replace the CD-ROM drive.
Does operation return to
normal?

YES

Media

NO

Go to No. 2-2

YES

CD-ROM drive

NO

Main PCB

IC11

4

Abnormal sound.

4-1

Replace the media.
Does operation return to
normal?

YES

Media

NO

CD-ROM drive

1-2

Replace the Main PCB.
Does operation return to
normal?

YES

Main PCB

NO

CD-ROM FPC

IC11

          Diagnostic Test Procedure 

 

(1) Test Computer  -------------------------------------------------------------------  1 unit 
(2) Port Replicator (CF-VEB071)    ------------------------------------------------  1 unit 
(3) External Keyboard    --------------------------------------------------------------  1 unit 
(4) External Display    -----------------------------------------------------------------  1 unit 
(5) External Floppy Disk Drive    ---------------------------------------------------  1 unit 
(6) AC Adapter    -----------------------------------------------------------------------  1 pc. 
(7) External Printer    ------------------------------------------------------------------  1 unit 
(8) Loopback Plug (Parallel Port Test) [P/N: DFWV95C0081]    -----------  1 pc. 
(9) Loopback Plug (Serial Port Test for RS232C) [P/N: DFWV95C0067] -1 pc. 
(10) Floppy Disk containing file DIAG --------------------------------------------- 1 pc. 

 

(1) Connect the computer (CF-07) to the port replicator (CF-VEB071). 
(2) Connect the AC Adapter and External Equipments. 
(3) The System Setup should be set to the factory setting values by executing the "SETUP 

UTILITY" which can be invoked by F2 key at the POST. 

      If not, the messages and items of the diagnostic test may not be displayed properly on the 

LCD. 

(4) The serial port must be enabled in the "SETUP UTILITY" in order to execute the "1st 

SERIAL PORT" test. 

(5) Connect the serial loopback plug. 
(6) In order to test the parallel port with Loopback Plug, disconnect the printer cable and 

connect the parallel loopback plug with Power OFF.   

 

When "Enter password" is displayed, use "Password Skipping Plug" in order to skip the user 
password. 

1) Connect the parallel plug to the parallel port. 

 

2) Connect the PS/2 mouse plug to the mouse port. 

 

3) Power on the computer. 

 

The wiring of the parallel plug is described below. 

  Connect pins 2-5-6-8-11-13-15-18-19-20-21-22-23 to Shield GND (PS/2 mouse plug pin 3.)   

Connect pins 3-4-7-9-10-12 to VC5 (PS/2 mouse plug pin 4) with 4.7KW each. 

 

 

 

The plug described above must be used for servicing purpose only. 
Do not use it for other than the above purpose and ensure that it remains confidential. 
Using the plug enables the user to skip the previous password and disable the password.