Troubleshooting - Toshiba B-EX6 Series Maintenance Manual

14. TROUBLESHOOTING

14. TROUBLESHOOTING
Problems
Power does not turn
ON.
LED or LCD does
not light.
Poor printing
Printer does not
print.
Dot missing
Blurred print
Cause
1. Input voltage to the printer is not
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.
1. Failure of the panel PC board or
operation panel
2. Failure of the operation panel harness
3. Failure of the MAIN PC board
1. Poor media quality.
2. Dirty print head
3. The print head block is not set
completely.
1. Print head failure
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.
1. Broken print head element
2. Broken print head cable wires
3. Failure of the MAIN PC board
1. Poor media quality.
2. Dust is on the media.
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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14. TROUBLESHOOTING
Solution