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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.
SERVO SYSTEM Adjustment
VIDEO SYSTEM ADJUSTMENT
RF Switching Position Adjustment (RP-230 Board) Purpose: Adjust the interval between A ch and B ch of tape playback output. Improve the interchangeability with other tapes and sets. When it is out of order, the interval appears on the screen, the screen is disturbed. Mode Signal Measurement Point PB Alignment tape SP mode color bar CH1: VIDEO LINE OUT CH2: Pin 2 of CN261 (RP230 board) (RF SWP) Oscilloscope 6.5 Â± 0.5 H (416 Â± 32 Âµsec)
Adjust the video system in the following sequence as a rule. The color video signal supplied from the pattern generator is used as a video input signal for video system adjustment in the recording mode. Make sure that sync. and color burst signals meet requirements specified at set up of adjustment shown in Fig. 7-2-1. [Adjustment Sequence] 2-4-1. Playback Y Signal Level Check 2-4-2. Recording Chroma Level Check 2-4-3. Sync. AGC Check 2-4-4. Xâtal Oscillation Frequency Check 2-4-1. Playback Y Signal Level Check (MA-315 Board)
Measuring Instrument Specified Value
Purpose: Confirm that the playback Y signal level is correct. Mode Signal Measurement point Measurement equipment Specified value PB Alignment tape SP color bar Pin #â¢ IC201 Oscilloscope 2.10 Â± 0.18 Vp-p
Adjusting Method: 1) Connect RP-230 board Pin 5 of CN261 to the GND for about 1 secont to activate the RF switching position adjustment mode. 2) Check appear âA Pâ on FL display. 3) Using the channel + and â buttons, adjust to 416 Â± 32 Âµsec (6.5 Â± 0.5 H). 4) Press the pause button.
Confirmation Method: 1) Confirm that the play Y level is 2.10 Â± 0.18 Vp-p.
CH1 CH2 Approx. 5 Vp-p V enargement Vertical sync. signal Approx. 1 Vp-p
2.10 Â± 0.18 Vp-p
6.5 Â± 0.5 H (416 Â± 32 Âµsec)