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Very fast and perfect delivery. Clear and well scanned. A lot of work professionally realized.
Again thak you a lot
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. :)
(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.
Level drop at the guide roller (supply side) C D (2)
A/C head (3) Level drop at the guide roller (take-up side)
AUDIO OUT â¢ Proper waveform variation: Always flat
CTL. P â¢ Improper waveform variation: Higher
Fig. 2-3-2a 2.3.3 A/C head phase (X-value) Fig. 2-3-1c
(A1) (B) (C) (D) (E) (F) (G) (H)
Equipment Measuring point External trigger
â¢ Alignment tape(SP, stairstep, PAL) [MHPE] â¢ PB â¢ Oscilloscope â¢ TP106 (PB. FM) â¢ TP111 (D.FF) â¢ A/C head base [Mechanism assembly] â¢ Maximum V.PB FM waveform â¢ A/C head positioning tool [PTU94010]
(a) Guide roller
Adjustment part Specified value Adjustment tool
(b) Guide pole
Fig. 2-3-1d 2.3.2 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 Fig.2-2-6c.)
Signal Mode Equipment Measuring point External trigger Adjustment part Specified value (A) (B) (C) (D1) (D2) (E) (F) (G)
â¢ Alignment tape(SP, stairstep, PAL) [MHPE] 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
(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) Loosen the screws (4) and (5), then set the A/C head positioning tool to the innermost projected part of the A/ C head. (See Fig. 2-3-3a.) (5) Turn the A/C head positioning tool fully toward the capstan. Then turn it back gradually toward the drum and stop on the second peak point position of the V.PB FM waveform output level. Then tighten the screws (4) and (5). (6) Perform the tracking operation and make sure that the V.PB FM waveform is at its maximum. If it is not at maximum, loosen the screws (4) and (5), and turn the A/C head positioning tool to bring the A/C head to a position, around where the waveform reaches its maximum for the first time. Then tighten the screws (4) and (5).
(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.