
5-1
5. TROUBLESHOOTING
EO18-33007
5. TROUBLE SHOOTING
• 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.
Power does not turn
ON.
LED or LCD does not
light.
Poor printing
Printer does not print
Dot missing
5. TROUBLESHOOTING
Problems
Cause
Solution
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 between
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 between
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
connector is incomplete,a bad
contact, 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
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.
Summary of Contents for B-880 series
Page 3: ...TEC Thermal Printer B 870 880 QQ SERIES Owner s Manual ...
Page 35: ......
Page 36: ...PRINTED IN JAPAN EO1 33017 ...
Page 56: ......
Page 57: ......
Page 58: ...PRINTED IN JAPAN EO10 33008 ...
Page 146: ...6 59 6 DIAG TEST OPERATION EO18 33007 Fig 6 25 Bar code AUTO PRINT Fig 6 24 ...
Page 176: ......
Page 177: ......
Page 178: ...PRINTED IN JAPAN EO18 33007 ...
Page 179: ......
Page 180: ......