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8. TROUBLESHOOTING EO18-33027
8. TROUBLESHOOTING
8- 1
8. TROUBLESHOOTING
Problems Cause Solution
Power does not
turn ON.
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.
Replace the power cable or power
inlet.
Replace the PS unit.
Replace the power harness.
Replace the MAIN PC board.
LED or LCD does
not light.
1. Failure of the panel PC board or
operation panel
2.
Failure of the operation panel
harness
3.
Failure of the MAIN PC board
Replace the panel PC board or
operation panel.
Replace the operation panel harness.
Replace the MAIN PC board.
Poor printing 1. Poor media quality.
2. Dirty print head
3.
The print head block is not set
completely.
Use the media approved by
TOSHIBA TEC.
Clean the print head.
Close the print head block
completely.
Printer does not
print.
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.
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.
Dot missing 1. Broken print head element
2. Broken print head cable wires
3.
Failure of the MAIN PC board
Replace the print head.
Replace the print head harness.
Replace the MAIN PC board.
Blurred print 1. Poor media quality.
2.
Dust is on the media.
Use only TOSHIBA TEC-approved
media.
Clean the print head and remove any
dust from the media.