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There are currently no product reviews.
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El producto satisface las necesidades del servicio t
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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...
CD SECTION
Note: 1. CD Block is basically constructed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M� impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. S Curve Check
oscilloscope BD board
Note: Clear RF signal waveform means that the shape ��� can be clearly distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV : 200mV TIME/DIV : 500ns level : 1.45 ± 0.3 Vp-p
Checking Location : BD board E-F Balance (1 Track Jump) check
oscilloscope TP (FE) TP (VC) + � TP (TE) TP (VC) + � BD board
Procedure : 1. Connect the oscilloscope to test points TP (FE) and TP (VC). 2. Connect TP (FEI) and Ground, and TP (AGCCON) and Ground of the BD board with lead wires. 3. Press the 1/u button to turn the set ON. 4. With the disc (YEDS-18) loaded, press the ( button and perform focus search. (Focus search will be performed in the same way even while the disc table is pushed in and out.) 5. Check the symmetry and peak to peak level of the oscilloscope waveform (S curve) at this time.
S-curve waveform
symmetry
Procedure: 1. Connect oscilloscope to test point TP (TE) and TP (VC) on BD board. 2. Press the 1/u button to turn the unit ON. 3. Put disc (YEDS-18) in to play the number five track. 4. Press the ( button. 5. Check the level B of the oscilloscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following: � A/B x 100 = less then ± 22 (%) � B = 1.3 ± 0.6 Vp-p
1 track jump waveform
Center of the waveform
A Within 4 ± 1 Vp-p B
IC103
B A (DC voitage)
6. After check, remove the lead wire connected in step 2. Note: � Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. � Take sweep time as long as possible and light up the brightness to obtain best waveform. Checking Location : BD board RF Level Check
oscilloscope BD board TP (RF) TP (VC) + �
0V
Symmetry level : 1.3 ± 0.6 Vp-p
Checking Location : BD board Checking Location : BD board [ BD BOARD ] � SIDE B �
TP (VC) IC102 TP (RF) TP (AGCCON) TP (FE) IC101 TP (TE) TP (FEI)
Procedure : 1. Connect oscilloscope to test point TP (RF) and TP (VC) on BD board. 2. Connect TP (AGCCON) and Ground of the BD board with lead wires. 3. Press the 1/u button to turn the set ON. 4. Put disc (YEDS-18) in and playback 5track. 5. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. 6. After check, remove the lead wire connected in step 2.
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