Great manual, great price. Has a few of the basic operating instructions that most service manuals leave out. Complete instructions for disassembling board by board, safety precautions, schematics, complete parts list.
I am very pleased with the service manual for my RT-909. This was an easy purchase and great procuct, and much cheaper than other venues i had looked at. This web site is now listed in my favorites list. KEEP UP THE GOOD WORK. THANKS. J. BROWN
I found this service manual to be complete in every detail except for troubleshooting charts. It would be helpful if it had a set of troubleshooting charts; however it is a very good manual otherwise and for the price it is very well worth it.
Text excerpt from page 7 (click to view)
Alignment and Adjustment
2-2 Mechanical Adjustment
Note : Refer to the Mechanical Manual âDX-9R (AC68-00001A)â for the adjustment and confirmation of assây full deck.
2-2-1 The number and position of test point
Test point : TP601 (Control Pulse) TP602 (HâD 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 âSW718 (TEST)â button on Main PCB to set the adjustment mode. (See Fig. 2-2) 3) Press the â5â 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 (HâD 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.