Problems In Printing - Tally Dascom 7010 Series Maintenance Manual

4-2-3. Problems in Printing

Symptoms
No print
Poor printing
Checks
1. Is the head block securely closed?
2. Is the thermal head over heated?
In this case, the LCD indicates "Alarm
Head Hot".
3. Is the PF motor over heated?
In this case, the LCD indicates "Alarm
PFMotor Hot".
4. Is the interface cable firmly connected
between the printer and the host?
5. Is the Centro cable firmly connected
between the Unit, Centro PCB (CN101)
and the SA, Main PCB (J17)?
6. Is the SA, Head Cable firmly connected
between the Unit, Head and the SA,
Main PCB (J3)?
7. Does the transparent/reflective sensor
detect presence of media?
8. Is +24V supplied to pins 7, 8, 9 and 10
of J11?
9. Is the thermal head temperature too
low?
In this case, the LCD indicates "Error
Head Cold".
10. Unit, Head is broken.
11. Failure in the head driver circuit.
12. Failure in the control circuit.
1. Thermal head is dirty.
2. Thickness adjustment is improper.
3. Is +24V supplied to pins 7, 8, 9 and 10
of J11?
1. Close the head block correctly.
2. Wait until the thermal head gets
cool. Printing resumes
automatically.
3. Wait until the PF motor gets cool.
Printing resumes automatically.
4. Connect it firmly.
5. Connect it firmly.
6. Connect it firmly.
7. To check, see
Problems".
8. Replace the Unit, Power Supply.
9. If the printer is cold, wait until it
gets warm. Otherwise, replace the
Unit, Head.
10. Replace the Unit, Head .
11. Replace the Unit, Head .
12. Replace the SA, Main PCB.
1. Clean it with the head cleaner
provided.
2. Adjust the media thickness
adjustment screw to suit to the
media thickness being used.
3. Replace the Unit, Power Supply.
4-7
4-2. Troubleshooting
Remedies
"4-2-5. Sensor