Troubleshooting
Rev. A
5-10
5.3 Repair of the C172 PSB/PSE Board at Component Level
This section contains information which enables you to repair and replace the components on the
electrical board (C172 PSB/PSE). Table 5-5 lists the potential causes for each symptom in order of
possibility, with which you are able to find and repair the defective part.
Table 5-5. Component Repair of the C172 PSB/PSE Board
Symptom
Condition
Cause
Checkpoint
Solution
The printer
does not
+42 VDC is
not output.
Fuse (F1) is
open.
Check visually if the fuse is good. Replace the fuse F1.
operate at all.
Transformer
(T1) is open.
Check the transformer using a
multimeter.
Replace the
transformer T1.
Q1 is dead.
Check the waveform at drain.
Waveform (1)
Replace the Q1.
Q2 or Q3 is
dead.
Check the waveform at corrector.
Waveform (2)
Replace the Q2 or Q3.
PC1 is dead.
Check the voltage in lowering at
the Pin 5 or 7.
Waveform (3)
Replace PC1.
+5 VDC is
not output.
L4962 is dead.
Check the reference waveform
at the Pin 5.
Waveform (4)
Replace the L4962.
Check the output waveform at the
Pin 7.
Waveform (5)
Summary of Contents for Stylus COLOR 3000
Page 5: ......
Page 126: ......
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Page 150: ...EPSON Stylus COLOR 3000 Rev A 6 5 1 1 1 2 3 4 4 4 4 4 4 Figure 6 1 Lubrication Points 1 ...
Page 151: ...Maintenance Rev A 6 6 9 9 9 9 9 9 9 9 6 7 Figure 6 2 Lubrication Points 2 ...
Page 161: ...EPSON Stylus COLOR 3000 Rev A A 8 ...
Page 162: ...Appendix Rev A A 9 A 2 Circuit Diagrams Figure A 2 C203 MAIN B Board Circuit Diagram 1 2 ...
Page 163: ...EPSON Stylus COLOR 3000 Rev A A 10 ...
Page 164: ...Appendix Rev A A 11 Figure A 3 C203 MAIN B Board Circuit Diagram 2 2 ...
Page 165: ...EPSON Stylus COLOR 3000 Rev A A 12 ...
Page 170: ...Appendix Rev A A 17 Figure A 8 C203 MAIN B Board Component Layout 2 ...
Page 171: ...EPSON Stylus COLOR 3000 Rev A A 18 Figure A 9 C203 PNL Board Component Layout ...
Page 172: ...Appendix Rev A A 19 Figure A 10 C172 PSB Board Component Layout ...
Page 173: ...EPSON Stylus COLOR 3000 Rev A A 20 Figure A 11 C172 PSE Board Component Layout ...
Page 174: ...Appendix Rev A A 21 A 4 Exploded Diagrams Figure A 12 Stylus 3000 Exploded Diagram 1 ...
Page 175: ...EPSON Stylus COLOR 3000 Rev A A 22 Figure A 13 Stylus 3000 Exploded Diagram 2 ...
Page 176: ...Appendix Rev A A 23 Figure A 14 Stylus Color 3000 Exploded Diagram 3 ...
Page 177: ...EPSON Stylus COLOR 3000 Rev A A 24 Figure A 15 Stylus Color 3000 Exploded Diagram 4 ...
Page 180: ...EPSON SEIKO EPSON CORPORATION ...