Toshiba B-570 - Manual (Page 29)

5-1
5. TROUBLESHOOTING EM18-33010A
5. TROUBLESHOOTING
• Replace the power cable or power
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.
• Re-adjust the print head.
• Replace the print head.
• Connect the harness completely,
or replace the harness.
• Replace the ribbon rewind motor,
ribbon feed motor or CPU PC
board.
• Replace the CPU PC board.
• Check the program.
• Replace the printer cable.
Power is not turned
ON.
LED or LCD does not
light.
Poor printing
Printer does not print.
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 CN2 on the PS
unit is 27 V.
And check the voltage between Pin 1
and Pin 3 (GND) is 5 V.)
3. CPU PC board is not applied with
voltage.
(Check the voltage between Pin 1
and Pin 3 (GND) of the CN17 on the
CPU PC board is 27 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.
4. Alignment adjustment of the print
head is improper.
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