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The quality of this manual is good. It has all schematics and setup information for both the MDS-B3 and the MDS-B4. The scan quality is quite good, all pages are readable, This service manual also contains scans of the operating instructions from the User manual.
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Quick site processing. A complete and very useful manual with all details. Thank you!
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Das Service Manual war von der ersten bis zur letzten Seite sehr informativ und hilfreich. Die Darstellung aller Teile war klar und der Text gut lesbar.
Vielen Dank, das war nicht der letzte Download bei ownner-manuals.com.
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It's a grate service manuals.Have many details and the writing it's so clear.You have all you want in manual,nothing missing,belive me.I'm verry satisfied of this manual.
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Great scanned service manual
Usefull informations.
I will buy again!
Best Regards
1-3 All output voltages on the power board is 0V or deviated.
Trouble shooting chart
All output voltages on the power board is 0V or deviated Yes
Check whether F1 is blown
Yes Replace F1
No
Check
whether
No
Replace C1&C2 if D1, D2, D3, D4 are normal.
there is 300V on C1
Yes
Check whether 100KHz oscillating signal on Pin6 of U1
No
Check/ replace U1. U1(PIN 3 - RC waveform) U1(PIN 8 - Drain waveform)
Yes
Check if +5V, , +12V and -12V are short.
No Check whether U1 are eroded.
Yes Check whether the components in the short-circuit voltage are defected or eroded.
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