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I ordered this manual sometime in the afternoon and I received it on my e-mail the same evening.
This is a fantastically good and properly scanned copy of the original manual. All pages are of the same scale and they overlap each other. It means that you can print the manual and easily make it as a convenient paper manual.
The content of the manual is fantastic. Alignment descriptions, PCB layouts and elementary diagrams are explicit and precise. I immediately found what I was looking for. Thanks to this manual and Owner-Manuals.com my amplifier is alive again. Many thanx indded!
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The manual was well-scanned and easy to read. As an added bonus, the Operator's Manual was bundled with the Service Manual!
I'd definitely use owner-manuals.com again.
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Finally, i found one website, where i can download this service manual , and fix my hifi. The service manual is very good, and easy to download and to print.
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Complete and very useful. Could have benefited from a little higher resolution on the schematic and layout diagrams for improved legibility.
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Great Service Manual, Very Complete, as advertised, Perfect, Thanks!
2. AUDIO CONTROL HEAD TILT ADJUSTMENT
Purpose: To confirm that the tape runs smoothly. In particular, confirm that the tape properly picks up the Audio Signal at the upper part of the head and the Control Signal at the lower part of the head. Symptom of Misadjustment: If the tilt of the Audio Control Head is poorly adjusted, the tape will eventually be damaged. An intermittent Blue screen may be seen in Playback. 1. Play back a T120 cassette tape and check that the tape travels smoothly between the upper and lower guides of the P4 post. 2. If necessary, adjust Black Screw (B) clockwise until the tape begins to curl at the lower edge of the P4 post. Then adjust the screw counterclockwise until the curling is eliminated.
Tape Running Condition Audio Control Head in Tilted Condition Direction to turn for Correction
Black Screw (B) Black Screw (C)
Black Screw (A) Control Head Lower Edge of Tape 0.25mm
Lower Edge of Control Head Fig. M8
4. AUDIO CONTROL HEAD AZIMUTH ADJUSTMENT
Purpose: To adjust the position and height of the Audio Control Head so that it meets the tape tracks properly. Fig. M7 Symptom of Misadjustment: If the position of the Audio Control Head is not properly adjusted, the Audio S/N Ratio is poor. 1. Connect the oscilloscope to the TP4002 on the Main C.B.A. 2. Play back the 6kHz Monaural Audio portion of the alignment tape. 3. Adjust Black Screw (C) on the Audio Control Head base so that the output level is at maximum.
3. AUDIO CONTROL HEAD HEIGHT ADJUSTMENT
The height of the Audio Control Head replacement part is preset at the factory. Purpose: To be sure the tape runs properly along the Control Head. Symptom of Misadjustment: If the control signal is not properly picked up, Servo Operation cannot be achieved. A Blue screen will be seen in Playback. This confirmation is required when the Audio Control Head is replaced.
6KHz-Audio
Maximum
Fig. M9 1. Play back a T120 cassette tape and check that the lower edge of the tape runs approximately 0.25 mm above the lower edge of the Audio Control Head. 2. If necessary, adjust Black Screws (A) and (B) clockwise to lower the tape or counterclockwise to raise. 4. Confirm the height of the Audio Control Head is proper. If not, readjust Black Screws (A) and (B).
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