8. TROUBLESHOOTING

EO18-33027

8. TROUBLESHOOTING

8. TROUBLESHOOTING

Problems

 

Cause

Power does not

1.

Input voltage to the printer is not

turn ON.

 

within the rated voltage. (Check by

 

 

connector on the PS unit.)

 

2.

Output voltage from the printer is not

 

 

within the rated voltage. [Check that

 

 

the voltage between +24V pins and

 

 

PG pins of connector on the PS unit

 

 

is 24V. And check that the voltage

 

 

between +5V and SG is 5V.]

 

3.

No voltage to the MAIN PC board.

 

 

[Check that the voltage between

 

 

+27V and PG pins of connector on

 

 

the MAIN PC board is 24V. And

 

 

check that the voltage between +5V

 

 

and LG is 5V.]

 

4.

Failure of MAIN PC board.

LED or LCD does

1.

Failure of the panel PC board or

not light.

 

operation panel

 

2.

Failure of the operation panel

 

 

harness

 

3.

Failure of the MAIN PC board

Poor printing

1.

Poor media quality.

 

2.

Dirty print head

 

3.

The print head block is not set

 

 

completely.

Printer does not

1.

Print head failure

print.

2.

Connection of the print head

 

 

connector is incomplete, a bad

 

 

contact, or broken elements.

 

3.

Failure in rewinding/feeding of the

 

 

ribbon.

 

4.

Failure of the MAIN PC board.

 

5.

Failure of the software

 

6.

Failure of the printer cable.

Dot missing

1.

Broken print head element

 

2.

Broken print head cable wires

 

3.

Failure of the MAIN PC board

Blurred print

1.

Poor media quality.

 

2.

Dust is on the media.

 

 

 

Solution

Replace the power cable or power inlet.

Replace the PS unit.

Replace the power harness.

Replace the MAIN PC board. Replace the panel PC board or operation panel.

Replace the operation panel harness.

Replace the MAIN PC board. Use the media approved by

TOSHIBA TEC. Clean the print head. Close the print head block completely.

Replace the print head.

Connect the harness completely, or replace the harness.

Replace the ribbon take-up motor, ribbon feed motor or MAIN PC board. Replace the MAIN PC board.

Check the program. Replace the printer cable. Replace the print head. Replace the print head harness. Replace the MAIN PC board.

Use only TOSHIBA TEC-approved media.

Clean the print head and remove any dust from the media.

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Toshiba B-EX4 manual Troubleshooting