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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
A very well written and easy to understand manual.
There was no problem at all.After paying i had to wait only a few hours,than i could
download the manual in best pdf-quality.
Thank You !
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.
SECTION 3 ADJUSTMENTS
3-2. ELECTRICAL ADJUSTMENTS
Note: 1. Supplied voltage: 3 V (DC) 2. Switch and control position VOLUME control SPEAKER/HEADPHONE switch AVLS switch FUNCTION switch ISS switch
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION 1. Clean the following parts with a denatured alcohol-moistened swab : record/playback/erase head pinch roller capstan rubber belts 2. Demagnetize the record/playback/erase head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head.) 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. 6. Power supply voltage : 3V DC. Torque Measurement
Mode Forward/Reverse Torque Meter CQ-102C Meter Reading 1.97 to 3.92 mN â¢ m (20 to 40 g â¢ cm) (0.28 to 0.55 ozâ¢ inch) 0.05 to 0.49 mN â¢ m (0.5 to 5.0 g â¢ cm) (0.007 to 0.07 ozâ¢ inch) CQ-102RC 0.05 to 0.49 mN â¢ m (0.5 to 5.0 g â¢ cm) (0.007 to 0.07 ozâ¢ inch) more than 4.90 mN â¢ m (50 g â¢ cm) (0.7 ozâ¢ inch)
: maximum : i (headphone) : OFF : OFF :1
TAPE DECK SECTION
Type WS-48A Signal 3 kHz, 0 dB
0 dB = 0.775 V
Used for Tape Speed Adjustment
Tape Speed Adjustment Procedure:
test tape WS-48A (3kHz, 0dB) set 16â¦ frequency counter
Forward Back Tension Reverse Back Tension
i headphone jack (J301)
Fast Forward and Rewind
1. Set REC TIME switch (S706) to NORMAL (4.8cm/s). 2. Play back the center portion of tape in REVmode, adjust RV602 so that the reading on the frequency counter becomes 3,000 Hz. 3. Set REC TIME switch (S706) to DOUBLE (2.4cm/s). 4. Play back the center portion of tape in REVmode, adjust RV601 so that the reading on the frequency counter becomes 1,500 Hz. Specifications: NORMAL (4.8cm/s) : 2,985Hz - 3,015Hz DOUBLE (2.4cm/s) : 1,485Hz - 1,515Hz 5. Confirm the frequency difference between the beginning and the end of tape should be 1.5%. NORMAL (4.8cm/s) : 45Hz DOUBLE (2.4cm/s) : 22.5Hz Adjustment Location:
[MAIN BOARD] (SIDE B)
IC1 TP1 IC301
RV601: Tape Speed Adjustment (2.4cm/s) RV602: Tape Speed Adjustment (4.8cm/s)