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DRUM AND DRIVE SECTION
6-43
SM
C231/C237/C238
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6.9.5 INK DETECTION ADJUSTMENT
PURPOSE: To ensure that the CPU detects a no ink condition.
ADJUSTMENT STANDARD:
See the following illustration.
CAUTION: This adjustment is required every time the MPU has been replaced.
1. Wipe off the ink around the ink roller beforehand (remove the ink cartridge ,use
SP 140, enter 0, and feed paper until the ink supply ends).
2. Turn off the main switch and disconnect the power plug.
3. Open the scanner.
4. Remove the MPU cover (2 screws).
5. Connect the CH1 probe of an oscilloscope to TP106, the CH2 probe to TP105,
and the grounding leads of both probes to TP110 (-12 volts). Select the 5-
microsecond range on the oscilloscope.
6. Connect the power plug and turn on the main switch.
7. Make sure that the waveform is as shown in the illustration while the ink end
indicator is lit.
8. If it is not correct, adjust the ON timing of the detection signal by turning VR101
beside the test pins.
NOTE: If the standard signal is delayed with respect to the detection signal, the
machine cannot detect the no ink condition. In such a case, LED101 on
the MPU will light to warn of this condition.
NOTE: If the ink detection off mode has been selected with SP 140, do not forget
to return it to the default (detection on).
+
0.
µ
s
0
CH
(Standard
CH
(Detection
4
C231R571.WMF
4+0.5/-0
µ
s
Содержание JP3000
Страница 1: ...C231 C237 C238 C248 C267 SERVICE MANUAL 000914MIU ...
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Страница 3: ...C231 C237 C238 C248 C267 SERVICE MANUAL ...
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Страница 5: ...C231 C237 C238 C248 C267 SERVICE MANUAL 000914MIU ...
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Страница 41: ...C231 SERVICE MANUAL ...
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Страница 43: ...OVERALL INFORMATION ...
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Страница 63: ...DETAILED SECTION DESCRIPTIONS ...
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Страница 115: ...INSTALLATION ...
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Страница 135: ...SERVICE TABLES ...
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Страница 166: ...INPUT OUTPUT CHECK MODE 4 30 C231 C237 C238 SM THIS PAGE IS INTENTIONALLY LEFT BLANK ...
Страница 169: ...PREVENTIVE MAINTENANCE ...
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Страница 173: ...REPLACEMENT AND ADJUSTMENT ...
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Страница 192: ...MASTER FEED SECTION 6 18 C231 C237 C238 SM A Master making unit 2 screws C231R522 WMF A ...
Страница 229: ...TAPE MARKER C532 ...
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Страница 239: ...PCRIP EZ1 GDI QuickDraw Priport Controller User s Guide ...
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Страница 271: ...C237 SERVICE MANUAL ...
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Страница 273: ...OVERALL MACHINE INFORMATION ...
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Страница 281: ...DETAILED SECTION DESCRIPTIONS ...
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Страница 285: ...INSTALLATION ...
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Страница 289: ...SERVICE TABLES ...
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Страница 309: ...PREVENTIVE MAINTENANCE ...
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Страница 313: ...REPLACEMENT AND ADJUSTMENT ...
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Страница 319: ...C238 SERVICE MANUAL ...
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Страница 321: ...INSTALLATION ...
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Страница 347: ...PREVENTIVE MAINTENANCE ...
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Страница 351: ...REPLACEMENT AND ADJUSTMENT ...
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Страница 387: ...TROUBLESHOOTING ...
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Страница 397: ...SERVICE TABLES ...
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Страница 421: ...DETAILED SECTION DESCRIPTIONS ...
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Страница 473: ...SPECIFICATIONS ...
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Страница 479: ...DOCUMENT FEEDER C600 ...
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Страница 499: ...C248 SERVICE MANUAL ...
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Страница 503: ...C267 ...
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Страница 511: ...INSTALLATION PROCEDURE SM 1 7 C267 C267 Service Manual C267I103 WMF C267I111 WMF C267I106 WMF ...
Страница 540: ...SCANNER C267 3 10 SM 3 4 6 PLATEN COVER SENSOR Top rear cover 3 2 4 A Platen cover sensor x 1 C267R082 WMF A ...
Страница 574: ...DRUM C267 3 44 SM Installation C267R068 WMF C267R070 WMF Inside Outside A B ...
Страница 578: ...DRUM C267 3 48 SM NOTE The side E with the part number printed on it must be on the top ...
Страница 581: ...DRUM SM 3 51 C267 C267 Service Manual H Ink roller unit I Ink roller one way clutch C267R901 WMF H I ...
Страница 689: ...6 13 4 PRINT C267D911 WMF ...