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Model  8-452 

ver. 2.1 

 

 

 

HARDWARE TESTS AND ADJUSTMENT 

 

 

 

© 2017 CHD Elektroservis 

Содержание CR78-PGM

Страница 1: ...7 Model 8 452 ver 2 1 HARDWARE TESTS AND ADJUSTMENT 2017 CHD Elektroservis...

Страница 2: ...3 3 Test of switches 4 4 Test of DIN SYNC input 4 5 Test of MIDI IN input 5 6 Test of EXT CLOCK output 5 7 Test of WRITE output 5 8 Test of START STOP output 6 9 End of tests 6 B Operational system v...

Страница 3: ...device on connect supply adapter 2 After that all dots are displayed on device s display Now INSTR and NEXT buttons can be depressed 1 TEST OF DISPLAY Test of display is launched automatically immedia...

Страница 4: ...us of SYNC and MODE switches is displayed during this test Actual position of some of switches is shown under abbreviation of corresponding switch For continue to next test NEXT button must be pressed...

Страница 5: ...he symbol is STR for START command status byte FAh or CON for CONTINUE command status byte FBh or STP for STOP command status byte FCh For continue to next test NEXT button must be pressed 6 TEST OF E...

Страница 6: ...button must be pressed 8 TEST OF START STOP OUTPUT Status of the output can be set with INCREMENT and DECREMENT buttons Actual status is shown on the display simultaneously Contacts of START STOP outp...

Страница 7: ...and date are displayed for about 3 seconds Then the device automatically comes to normal working mode If no error occurs during testing procedures the device is fully functional and it should to work...

Страница 8: ...sts need not to be executed if only version of operational system of the device is requested In that case press INCREMENT button and hold it 1 Then turn the device on connect supply adapter 2 After th...

Страница 9: ...rument is very old and some components alter their parameters over time especially electrolytic capacitors In that case longer START STOP or and WRITE pulses have to be used for such instrument Remark...

Страница 10: ...pads not grounded 50 ms factory setting A B C D GND PADS A pad not grounded B pad grounded 75 ms A B C D GND PADS A pad grounded B pad not grounded 100 ms A B C D GND PADS Both A and B pads grounded...

Страница 11: ...yright 2017 CHD Elektroservis All rights reserved No part of this publication may be reproduced in any form without written permission of CHD Elektroservis 11 NOTES Manufacturer CHD Elektroservis Nad...

Страница 12: ...7...

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