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Very Good! All the diagram are easy to read, and its complete.
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This was an excellent source of detailed assembly information on a device which is at least 12 years old. A very lucky find, coupled with great service.
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Excellent Service Manual and best price on the Internet. This Service Manual covers everything you could ever need including full circuit schematics, component layout diagrams, stripdown procedure and full parts list/breakdown. I needed this to carry out a modification to one of these headunits and this manual covered everything I needed. Fast delivery, processed within a few hours.
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Thought I would never find a copy of the Technics SX-EN2 Service Manual until I found Owner-Manuals.com. Price was very fair and I received the download promptly. While a photocopy, it is quite readable and includes all the pertinent information and diagrams. Thank you Owner-Manuals!
TX-DS494/HT-R490 ADJUSTMENT PROCEDURES
IDLING CURRENT ADJUSTMENT
1. Before Idling adjustment, turn the trimming resistors R573, R574, R673, R674 and R1532 to counter clockwise. 2. Connect the DC voltmeter to sockets P511,P512, P611, P612 and P1511. 3. After turn POWER to ON, adjust the trimming resistors R573, R574, R673, R674 and R1532 so that the reading of voltmeter becomes 2.4 to 2.6 mV. 4. After adjustment, attach the top cover. 5. Confirm the voltage of above points after five minutes. 6. When 3.1 mV to 6.4 mV : Readjust the trimming resistors above so that the voltage becomes 6.5 to 6.7 mV. When 6.5 mV to 7.5 mV : It is not necessary to adjust. When 7.6 mV to 13 mV : Readjust the trimming resistors above so that the voltage becomes 7.5 to 7.7 mV.
[Note] No load and No signal
Front Lch
Front Rch
P511
P512
R573
R574
Front side Front side
R1532
P612
R674
R673 P611
P1511
Center ch
Surround Rch
Surround Lch
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