FX-2180 Service Manual
Troubleshooting
Rev. A
3-8
Table 3-9. Repairing the Power Supply Board (Continued.)
Problem
Cause
Checkpoint
Solution
+5V lines
is not
output.
Chopper
IC IC51 is
failure.
Check the waveform at pin 8 of
IC51.
Figure 3-10. Waveform 3
Replace
IC51.
Q51 is
failure.
Check the waveform at
COLLECTOR of Q51.
Figure 3-11. Waveform 4
Replace
Q51.
L51 is
failure.
Check the resistance between
terminals of L51.
Replace
L51.
The
PWDN
signal is
constantly
HIGH.
IC51 is
failure.
Check whether the voltage of pin
6 is more than 1.3V or not. If the
voltage is more than 1.3V, IC51
is failure.
Replace
IC51.
Содержание FX-2180 - Impact Printer
Страница 1: ...EPSON EPSON EPSON France S A SERVICE MANUAL FX 2180 PRODUIT ...
Страница 2: ...6 59 0 18 3LQ PSDFW RW 3ULQWHU EPSON FX 2180 4009047 ...
Страница 6: ...REVISION STATUS Rev Date Page s Contents A 1998 04 02 All First release ...
Страница 11: ...PRODUCT DESCRIPTIONS 3 7 5 ...
Страница 24: ...OPERATING PRINCIPLES 3 7 5 ...
Страница 28: ...TROUBLESHOOTING 3 7 5 ...
Страница 43: ...DISASSEMBLY AND ASSEMBLY 3 7 5 ...
Страница 76: ...ADJUSTMENT 3 7 5 ...
Страница 86: ...MAINTENANCE 3 7 5 ...
Страница 89: ...APPENDIX 3 7 5 ...
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