
Troubleshooting
Rev. A
5-15
Table 5-12. Repair of C210 MAIN Board
Condition
Cause
Check point
Solution
Symptom :An error has occurred.
“Fatal error”
+35 VDC line
monitor circuit is
defective.
Check the voltages output from pin
88 and pin 89 of IC16.
If the output voltages are correct,
CPU is defective.
Replace the
main control
board or
PSB
/
PSE
board.
CR control circuit
is defective.
Check pins 5, 6, 16 and 17 of
IC7
for
input signal waveform and pins 1, 8,
11 and 18 for output signal
waveform.
−
If the motor phase signal is not
input, gate array
IC25
is defective.
−
If the drive waveform is not output,
IC7
is defective.
Figure 5-13. CR Motor Drive Waveform
Replace the
main control
board or
IC7
.
Sensors are not
functioning
properly.
Sensor circuit is
defective.
Check pin 85 of
IC16
for the correct
reference voltage. (+5 V).
−
If it’s normal, CPU is defective.
−
If it is abnormal, shunt-regulator
IC19 and its peripheral parts or the
electrical circuit is defective.
Replace the
main control
board or
PSB/
PSE
board.
Содержание DLQ-3000 Minerva+
Страница 1: ...EPSON 24 PIN DOT MATRIX PRINTER EPSON DLQ 3000 SERVICE MANUAL SEIKO EPSON CORPORATION 4008259 ...
Страница 5: ...v REVISION SHEET Revision Issued Data Contents Rev A August 21 1997 First Release ...
Страница 61: ...2 3 12 Other Sensor Circuits 2 31 ...
Страница 160: ...Chapter 6 Maintenance 6 1 Maintenance 6 1 6 1 1 Lubrication and Adhesion 6 1 ...
Страница 171: ...DLQ 3000 Rev A A 6 ...
Страница 172: ...Appendix Rev A A 7 A 2 Circuit Diagrams Figure A 2 C210 MAIN Board Circuit Diagram 1 2 ...
Страница 173: ...DLQ 3000 Rev A A 8 ...
Страница 174: ...Appendix Rev A A 9 Figure A 3 C210 MAIN Board Circuit Diagram 2 2 ...
Страница 175: ...DLQ 3000 Rev A A 10 ...
Страница 177: ...DLQ 3000 Rev A A 12 Figure A 5 C124 PSB Board Circuit Diagram ...
Страница 179: ...DLQ 3000 Rev A A 14 A 3 Circuit Board Component Layout Figure A 7 C210 MAIN Board Component Layout 1 2 ...
Страница 180: ...Appendix Rev A A 15 Figure A 8 C210 MAIN Board Component Layout 2 2 ...
Страница 181: ...DLQ 3000 Rev A A 16 Figure A 9 C124 PSB Board Component Layout ...
Страница 182: ...Appendix Rev A A 17 Figure A 10 C124 PSE Board Component Layout ...
Страница 189: ...EPSON SEIKO EPSON CORPORATION ...