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Excellent!! Got what I need and very fast!! Thank You
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Manual acquired with good resolution, complete in all its pages, very good policy of the folder where are saved all products purchased.
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Service manual very complete and clear. It was very helpfull for my work.
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This is the 2nd time I download manuals from this website and I can say it's what I was expecting. It contains schematic, layout (decent quality), short description, parts and dissasembly instructions. I recomend it for anyone who wants to repair/modify this device.
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Very useful Service Manual! With it I was able to identify the damaged pots in my old amplifier, purchase the adequate replacements and make myself the repair.
I have again my old amplifier, still a very good one that I will keep for as many years as I can!
Thanks to Owner Manuals!
A-407R
6. ADJUSTMENTS
6.1 IDLE CURRENT ADJUSTMENT
¶ CAUTION : Heatsinks� (Q323�Q326) DC level is equal to +B or -B. Don�t touch them or you will be electricary chocked. 1. Connect the measuring instrument as Fig.6-1. (R415 or R416) 2. Set the VOLUME CONTROL to minimum, BASS TONE CONTROL to center, TREBLE TONE CONTROL to center and BALANCE CONTROL to center. Set VR301 and VR302 to minimum. 3. Set the POWER switch to ON. 4. Adjust VR301 (VR302) so that the voltage between both sides of R415 (R416) becomes 16mV±1mV. (Within 10 seconds from when the relay is turned ON) 5. Ages for 7 minutes. 6. Adjust VR301 (VR302) so that the voltage between both sides of R415 (R416) becomes 11mV±1mV.
DC Voltmeter
DC Voltmeter
AF ASSY
SIDE A
R415 R413 W150 Heat Sink VR301 R417 W212
R416 R414
Heat Sink
VR302 Heat Sink
Heat Sink
CN204
Fig.6-1 Adjustment Method
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