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Impeccable, document très complet. Perfect, i get all i need. All schematic are correct. Thanks
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The manual is of better quality compared to other. I found it less expensive and therefore it it is the best buy cost vs quality.
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I bought the service-manual of the sony ICB-1020(an old transmitter-receiver) at "www.Owners-Manual.com", I found the service-manual for a fairly cheap price(in comparison with other sellers). I filled in some questions, payed the order with Ideal, and within 24 hours I had my service manual. I was very happy:In no time I had my service-manual and everything, but literally everything was noted down in the manual; the electronic scheme, the parts list, etcetera.
A very practical, reference-document.
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This comprehesive service maual was greatly appreciated, as was the digital download.
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Good en helpfull black and white scanned Srfvice manual of the Philps D8444. Quick service and delivery
5. To shift the CTL waveform, press CH UP or CH DOWN button on the remote control unit. Then make sure that the maximum output position of PB FM envelope signal becomes within ±2ms from preset position.
either at the beginning or end of track as shown in Fig. M10.
Dropping envelope level at the beginning of track.
Good
FM envelope signal 2ms Center Position
Fig. M8
Dropping envelope level at the end of track.
FM envelope output signal is adjusted at maximum. CTL signal
No Good
FM envelope output signal is low.
Fig. M7
6. Set the Tracking Control Circuit to the preset position by pressing CH UP button and then �PLAY� button on the unit.
Fig. M9 Envelope is adjusted properly. (No envelope drop)
1-C. Checking/Adjustment of Envelope Waveform
Purpose: To achieve a satisfactory picture, adjust the Guide Rollers so that the PB FM envelope becomes as flat as possible. Symptom of Misalignment: If the envelope output is poor, noise will appear in the picture. The tracking will then lose precision and the playback picture will be distorted by any slight variation of the Tracking Control Circuit. 1. Connect the oscilloscope to TP301 (C-PB) on the Main CBA. Use TP504 (RF-SW) as a trigger. 2. Playback the Gray Scale on the Alignment Tape (FL6NS8). Set the Tracking Control Circuit to the preset position by pressing CH UP button and then �PLAY� button on the unit. Adjust the height of Guide Rollers [2] and [3] (Fig. M3, Page 2-3-3) watching the oscilloscope display so that the envelope becomes as flat as possible. To do this adjustment, turn the top of the Guide Roller with the Guide Roller Adj. Screwdriver. 3. If the envelope is as shown in Fig. M8, adjust the height of Guide Roller [2] (Refer to Fig. M3) so that the waveform looks like the one shown in Fig. M10. 4. If the envelope is as shown in Fig. M9, adjust the height of Guide Roller [3] (Refer to Fig. M3) so that the waveform looks like the one shown in Fig. M10. 5. When Guide Rollers [2] and [3] (Refer to Fig. M3) are aligned properly, there is no envelope drop 2-3-4 D5P4HSMA
Fig. M10
Note: Upon completion of the adjustment of Guide Rollers [2] and [3] (Refer to Fig. M3), check the X Value by pushing the CH UP or DOWN buttons on the unit alternately, to check the symmetry of the envelope. Check the number of pushes to ensure preset position. The number of pushes of the CH UP button on the unit to achieve 1/2 level of envelope should match the number of pushes of the CH DOWN button on the unit from center. If required, redo the �X Value Alignment.�
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