Problems In Printing - Citizen CL-S6621 Technical Manual

4-2-3. Problems in Printing

Symptoms
No print
Checks
1. Is the head block securely closed?
2. Is the "SA, Head" over heated?
In this case, PRINT LED and
CONDITION LED simultaneously blink.
3. Is the "SA PF Motor" over heated?
In this case, PRINT LED and
CONDITION LED blink alternatively.
4. Is "SA Ribbon Motor F" over heated?
In this case, PRINT LED and
CONDITION LED blink alternatively.
5. Is the interface cable firmly connected
between the printer and the host?
6. Are the "SA, Head Signal Cable" and
"SA, Head Power Cable" connected
between the "SA, Head" and the "SA,
Main PCB" (J3 and J5)?
7. Does the transparent/reflective sensor
detect presence of media?
8. Is +24V supplied to the pins 1-4 of J15
on the "SA, Main PCB"? (GND: Pins
5-8)
[Bottom right of the "SA, Main PCB"]
9. "SA, Head" is broken.
10. Failure in the head driver circuit.
11. Failure in the control circuit.
12. For thermal transfer printing:
Is ribbon set correctly?
13. For thermal printing:
Is thermal paper used?
1. Close the head block correctly.
2. Wait until the "SA, Head" gets cool.
Printing will resume automatically.
3. Wait until the "SA PF Motor" gets
cool.
Printing will resume automatically.
4. Wait until the "SA Ribbon Motor F"
gets cool. Printing will resume
automatically.
5. Connect it firmly.
6. Connect them firmly.
7. To check, see "
8. Replace the "Unit, Power Supply".
9. Replace the "SA, Head".
10. Replace the "SA, Head".
11. Replace the "SA, Main PCB".
12. Set the ribbon correctly. (Be sure
that the inked surface faces the
media.)
13. Use thermal paper.
4-7
Troubleshooting
Remedies
Sensor Problems".
CL-S6621