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Response is a little slow- I had to wait 12 hours to receive download link but it says that it may take up to 24hrs.
Manual is old and was not produced in PDF- scanned copy is exellent.
Overall- value for money- I recommend
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Excellent quality and quickly delivered manuals at a fair price. Great care is taken in the reproduction process. Even photographs and highly detailed drawings are as clear as in the original. That cannot be said for some freelance manual copies I have obtained from the web. If you have exhausted your internet search of technical manuals, try Owner-Manuals.com. If they do not have it, I do not think it exists. Perhaps, if requested, they may be able to find it. Their resources are certainly greater than most. Shopping here certainly beats waiting for months or years for the manual you seek to appear in an internet auction or garage sale.
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Very detailed product, also it is a scanning from original, very useful if you have to service this type of amplifier ! Very good product, very hard to find!
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the Manual was made available as promised, the scans were excellent..Good Work !!!
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It's complete and helpful manual with good quality of scan. Thanks very much.
3) Observe the waveform on the spectrum analyzer and turn RV21 to adjust the modulation degree of a sub spectrum �A� in the figure 4 to be narrowest as shown below.
4) At this time, measure AC voltage of IC21 Pin 1 on the TX board with AC voltmeter and define the value as �V0� for the next adjustment. 5) Turn the RV21 again so that the AC voltage of IC21 Pin 1 becomes the same value as the two thirds of �V0�. (V1=V0 � 2/3) Adjustment Location: TX board (See page 6.) Adjustment and confirmation without a spectrum analyzer Please confirm the units by following procedure shown below. Here a series of procedure which can be performed without a spectrum analyzer is introduced. Deviation adjustment/confirmation 1) Input a 400 Hz 316 mV signal into the left channel of transmitter. 2) Measure the AC voltage at the Pin 1 of IC21 (MJM2100M) with AC voltmeter. Spec.: 100 ± 10 mVrms If not, turn RV21 for obtaining the value. Adjustment Location: TX board (See page 6.) Sub-carrier frequency and output level confirmation 1) No signal is input into transmitter. 2) Connect a oscilloscope and a frequency counter to the test point TP1. 3) Confirm the voltage is within the following spec. Spec.: 0.55 Vp-p
0.55 Vp-p
4) Confirm the frequency is within the following spec. fsub=42 ± 2 kHz
SCHEMATIC DIAGRAM
� Original Service Manual page 7. (Location C � E, 6 � 8) Connection point
PRINTED WIRING BOARD
� Original Service Manual page 5. (Location A � C, 4 � 6)
oscilloscope frequency counter IN
!:
[TX Board]
+ � OUT coaxial cable
^
[TX Board] � Conductor Side �
�5�
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