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CHD Elektroservis CR78-PGM Hardware Tests And Adjustments

Controller & programmer for roland cr-78
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Model 8-452
ver. 2.1
HARDWARE TESTS AND ADJUSTMENT
7
© 2017 CHD Elektroservis

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Summary of Contents for CHD Elektroservis CR78-PGM

  • Page 1 Model 8-452 ver. 2.1 HARDWARE TESTS AND ADJUSTMENT © 2017 CHD Elektroservis...

  • Page 2: Table Of Contents

    This manual in PDF form is available on supplemental CD-ROM or on manufacturer’s web-pages. Manufacturer : CHD Elektroservis Nad kundratkou 27, 19000 Praha 9 Czech Republic www.chd-el.cz info@chd-el.cz Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 3: A) Hw Tests

    Status of each of buttons is displayed as circular symbol on the display. This symbol is blank before a button is pressed and it will be filled after a button pressing. Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 4: Test Of Switches

    DC voltage (from 4 to 5 volts) can be used – see picture: For continue to next test, NEXT button must be pressed. Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 5: Test Of Midi-In Input

    Contacts of WRITE output are opened in ON status and the contacts are connected in OFF status - the output works as NC type switch. Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 6: Test Of Start/Stop Output

    All available tests are executed now. Display shows info: For continue, NEXT button must be pressed. Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
  • Page 7 If any hardware error occurs during testing procedures, the device must be repaired in specialized workshop. Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 8: B) Operational System Version Displaying

    After that, operational system version number and date are shown on display for about 3 seconds. Then the device automatically comes to normal working mode. Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 9: C) Adjustment

    Now you can see printed circuit board of the controller: PROCESSOR (ON OPPOSITE SIDE) SOLDER PADS A B C D REMOVE SOLDER MASK HERE Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.

  • Page 10: Length Of Start/Stop Pulse

    60 ms A B C D PADS Both C and D pads grounded 80 ms Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
  • Page 11 NOTES: Manufacturer : CHD Elektroservis Nad kundratkou 27, 19000 Praha 9 Czech Republic www.chd-el.cz info@chd-el.cz Copyright © 2017 CHD Elektroservis All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.