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This manual is accurate and of high quality. It is only volume 2 of the service manual. This is schematic, parts lists, and exploded mechanical drawings. The theory of operation and the diss-assembly instructions are in volume 1. The unit can be tricky to dis-assemble portions of so the volume 1 manual can be important. The product description of the manual is accurate but it does not say anything about volume 1 and the image of the front page does clearly say Volume 2.
Wellll again thank you very much fast and effective. Clear and well done for such an old TV!!!!
It has all the information you will need to fix it. The main circuit diagram is only A4 but being a PDF, you can print it to any size - I did it on two sheets of A3 and it didnt lose any detail - just made it readable when pinned up above the bench. I've found the fault, just need to buy some obscure bits to get it going again!
I cant fault the process, I paid for the manual in the morning and it was ready to download by lunch time.
Very good copy in a 54 pages PDF archive. This is my sixth purchase here. :)
Another excellent buy! File too clear and explanatory.
3.2.2 FM waveform linearity
Signal Mode Equipment Measuring point External trigger Adjustment part Specified value Adjustment tool (A1) (A2) (B) (C) (D) (E) (F) (G) (H)
â¢ Proper waveform variation
â¢ Alignment tape(SP, stairstep, NTSC) [MHP] â¢ Alignment tape(EP, stairstep, NTSC) [MHP-L] â¢ PB â¢ Oscilloscope â¢ TP106 (PB. FM) â¢ TP111 (D.FF) â¢ Guide roller [Mechanism assembly] â¢ Flat V.PB FM waveform â¢ Roller driver [PTU94002]
â¢ Improper waveform variation Up
(1) Play back the alignment tape (A1). (2) Apply the external trigger signal to D.FF (E), to observe the V.PB FM waveform at the measuring point (D). (3) Set the VCR to the manual tracking mode. (4) Make sure that there is no significant level drop of the V.PB FM waveform caused by the tracking operation, with its generally parallel and linear variation ensured. Perform the following adjustments when required. (See Fig. 3-2-2b.) (5) Reduce the V.PB FM waveform by the tracking operation. If a drop in level is found on the left side, turn the guide roller of the pole base assembly (supply side) with the roller driver to make the V.PB FM waveform linear. If a drop in level is on the right side, likewise turn the guide roller of the pole base assembly (take-up side) with the roller driver to make it linear. (See Fig. 3-2-2b.) (6) Make sure that the V.PB FM waveform varies in parallel and linearly with the tracking operation again. When required, perform fine-adjustment of the guide roller of the pole base assembly (supply or take-up side). (7) Unload the cassette tape once, play back the alignment tape (A1) again and confirm the V.PB FM waveform. (8) After adjustment, confirm that the tape wrinkling does not occur at the roller upper or lower limits. (See Fig. 3-2-2a.) [Perform adjustment step (9) only for the models equipped with SP mode and EP (or LP) mode.] (9) Repeat steps (1) to (8) by using the alignment tape (A2).
Guide roller (supply side)
Fig. 3-2-2b 3.2.3 Height and tilt of the A/C head Note: â¢ Set a temporary level of the height of the A/C head in advance to make the adjustment easier after the A/C head has been replaced. (See âsection 2 mechanismâ.)
Signal Mode Equipment Measuring point External trigger (A) (B) (C) (D1) (D2) (E) (F) (G)
â¢ Alignment tape(SP, stairstep, NTSC) [MHP] â¢ PB â¢ Oscilloscope â¢ AUDIO OUT terminal â¢ TP4001 (CTL. P) â¢ TP111 (D.FF) â¢ A/C head [Mechanism assembly] â¢ Maximum waveform
Adjustment part Specified value
(a) GUIDE ROLLER
(b) GUIDE POLE
(1) Play back the alignment tape (A). (2) Apply the external trigger signal to D.FF (E), to observe the AUDIO OUT waveform and Control pulse waveform at the measuring points (D1) and (D2) in the ALT mode. (3) Set the VCR to the manual tracking mode. (4) Adjust the AUDIO OUT waveform and Control pulse waveform by turning the screws (1), (2) and (3) little by little until both waveforms reach maximum. The screw (1) and (3) are for adjustment of tilt and the screw (2) for azimuth.
(2) (1) AUDIO OUT
CTL. P (3)
Parts Catalog only. It's available in PDF format. Useful, if Your equipment is broken and You need t…