EO18-33006
5. TROUBLE SHOOTING
5-1
5. TROUBLESHOOTING
1. Broken print head element
2. Broken print head cable wires
3. Failure of the CPU PC board
4. Failure of the I/O PC board.
5. TROUBLESHOOTING
Problems
Power does not turn
ON.
LED or LCD does not
light.
Poor printing
Printer does not print
Dot missing
Cause
1. Input voltage to the printer is not
within the rated voltage.
(Check by CN1 on the PS unit.)
2. Output voltage from the printer is
not within the rated voltage.
(Check that the voltage between
Pin 4 and Pin 6 (GND) of CN1 on
the PS unit is 27 V.
And check that the voltage be-
tween Pin 11 and Pin 6 ( GND) is
5 V.)
3. No voltage to the I/O PC board.
(Check that the voltage between
Pin 1 and Pin 5 (GND) of CN2 on
the I/O PC board is 27 V.
And check that the voltage be-
tween Pin 11 and Pin 10 (GND)
is 5 V.)
4. Failure of CPU PC board.
1. Failure of the LED board/LCD
2. Failure of the LCD/LED harness
3. Failure of the CPU PC board
1. The print paper is of poor quality.
2. Dirty print head
3. The head lever fastens the print
head incompletely.
1. Print head failure
2. Connection of the print head con-
nector is incomplete,a bad con-
tact, or broken wires.
3. Failure in rewinding/feeding of the
ribbon.
4. Failure of the CPU PC board
5. Failure of the software
6. Failure of the printer cable
Solution
•
Replace the power cable orpower
inlet.
•
Replace the PS unit.
•
Replace the power harness.
•
Replace the CPU PC board.
•
Replace the LED board/LCD.
•
Replace the LCD/LED harness.
•
Replace the CPU PC board.
•
Use the media approved by
TOSHIBA TEC.
•
Clean the print head.
•
Fasten the head lever completely.
•
Replace the print head.
•
Connect the harness completely,
or replace the harness.
•
Replace the ribbon rewind motor,
ribbon feed motor or I/O PC
board.
•
Replace the CPU PC board.
•
Check the program.
•
Replace the printer cable.
•
Replace the print head.
•
Replace the print head harness.
•
Replace the CPU PC board.
•
Replace the I/O PC board.
