Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
Speedy transaction with a quick download. Awesome hassle-free service.
Text excerpt from page 7 (click to view)
Alignment and Adjustment
2-2 Mechanical Adjustment
Note : Refer to the Mechanical Manual �DX-9R (AC68-00001A)� for the adjustment and confirmation of ass�y full deck.
2-2-1 The number and position of test point
Test point : TP601 (Control Pulse) TP602 (H�D S/W -Trigger) TP301 (Envelope) TP302 (Audio output) TP303 (Video output)
AUDIO OUTPUT ENVELOPE HEAD SWITCHING
Fig. 2-3 Location of Test point (Main PCB-Top View)
2-2-2 ACE Head Position (X-Point) Adjustment
(See the 2-2-1(d) ACE Head Position (X-Point) Adjustment on page 2-2 of the Mechanical Manual) 1) Playback the alignment tape (Color bar). 2) Press the �SW718 (TEST)� button on Main PCB to set the adjustment mode. (See Fig. 2-2) 3) Press the �5� button of remote control then adjustment is operated automatically. (See Fig. 2-1)
4) Connect the CH-1 probe to TP301 (Envelope) the CH-2 probe to TP602 (H�D switching pulse) and then trigger to CH-1. 5) Insert the (-) driver into the X-Point adjustment hole and adjust it so that envelope waveform is maximum. 6) Turn the Power off.