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This is a good quality scan of the Operation & Maintenance (Service) Manual for the PAL version of this high-band broadcast umatic, BVU-800P
All schematics and lineup procedures appear to be included in this one manual AFAICT.
The file size is just over 113 MB which gives an idea of the quality and number of pages.
All of the schematics, which contain some fairly small print, are easily readable when you zoom into the page.
John Thompson, Newcastle Upon Tyne, England.
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Good quality, all schematics of few of models. There is also short form of user manual and regulation manual.
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Perfect copy of the service manual. you can enlarge every page, and it comes up
with all details.
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It´s very very nice manual with all, what i need. Original in good quality. Very fast business. Very much thanks...
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Purchased the manual that I was looking for at a great price and could download it easily.. Great service experience and for future purchases I plan to use the site.
Thank you very much
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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
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