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This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
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Mi spiace per non poter scrivere in inglese... ma sono veramente soddisfatto del servizio offerto. Grazie..!!
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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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4 When DC is generated at the output because of a failure in the AMP system, etc.
5 When abnormally high temperature is detected by the thermistor
5 -1 IC81 abnormal temperature detection circuit
VD+5 IC81 NJM7805FA TH111 NCP18WF104J03RB
A
J
R3605 (R3625) (R3615) 27k Q3637 R3606 (R3626) (R3616) 27k + R3638 10k C3632 470/6.3
POWER Assy
D
VD+5
6CH AMP Assy
D
+5V Q3632
E B C
6CH AMP Assy
to XPROTECT
R108 27k
Front L ch (SW, SL) Front R ch (C, SR)
A
XPROTECT R111 1k
R113 220 R112 1k
Q111 2SC4081
Q3638
Q3633
The voltage at Point A becomes the divided voltage of TH111 and R111//R112 (combined resistance of parallel-connected � In Normal mode, both Q3637 and Q3638 are off. (1) When positive (+) DC voltage is generated at the SP terminal When positive (+) DC voltage is generated at the L or R channel, and VB of Q3637 becomes higher than that at the operation point, Q3632 (E, C, B) is turned on, and the level of XPROTECT becomes low. � The microcomputer detects the XPROTECT level and shuts the power to the unit off. (2) When negative (-) DC voltage was generated at the SP terminal Q3638 is turned on, and XPROTECT is activated. resistors R111 and R112.) In Normal mode, the resistance at TH111 is much higher than R111//R112, and Q111 is off. (Note that the resistance at TH111 becomes lower as the temperature increases.) If the solder temperature at IC81 increases abnormally, the temperature at TH111 (thermistor) mounted closest to the land of IC81 increases accordingly, and the resistance at TH111 decreases. When the temperature at TH111 reaches 90-110_C (varying according to conditions,) the voltage at Point (A) becomes high enough to turn Q111 on, and the level of the XPROTECT line becomes low. The microcomputer detects the XPROTECT level and shuts the power to the unit off.
B
C
D
E
F
XV-DV430
1 2 3 4
111
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