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This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
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A complete manual with all the needed details of calibrations and service instructions about the radio receiver.
A big deal.
Many thanks !
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Fast delivery and good quality copy. To be recommended
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Excellent product, very clear print. Detailed circuit and assembly diagrams - this enabled me to repair my CD player with confidence. I highly recommend this site.
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Fast access, 100% correct and complete service manual
VL-PD3S/H/E
VL-PD3S/H/E
7-4. Running rough adjustment
(Since this adjustment is performed without cassette controller, put a proper weight so that the cassette does not rise , and make an adjustment.) 1) Su, Tu guide roller height adjustment <Method and description> (1) Loosen the guide roller lock screw, then tighten loosely so that the roller turns easily. (2) Replay an alignment tape, and adjust the Su, Tu guide roller so that the envelope sides of entrance and exit are flat. (3) Perform ± 1/4 shift, then, as in the above case, adjust until the envelope becomes flat. * If running is difficult for the entrance changed, turn the T roller to counter clockwise 180°. (refer to Fig. 1)
NG ±1/4 shift Entrance side Normal Exit side NG ±1/4 shift
Turn to 180° T roller
Fig. 1
2) Check of V/SR envelope wave form <Method and description> (1) Confirm that the envelope waveform peaks in V/SR mode are uniform. (2) If they are not uniform, fine-adjust the guide roller and the Tu guide. 3) Check of tape wrinkles <Method and description> (1) Check that the tape is not distorted between the Tu guide and pinch in the PB mode and the V/SR mode. -If crease is found, make an adjustment in the range of ±180°. -After adjustment apply Screw Lock.
Pinch roller
Adjust so that A
A
�
�
B.
B
Wrinkles Tu guide
Deformation
Deformation
4) Check the rising time of the envelope wave form <Method and description> (1) Check the rising time of the envelope when switching from V/SR mode to PB mode. (Within 5 sec) (2) Check the rising time of the envelope when switching from STOP mode to PB mode. (Within 5 sec)
7-5. Final running adjustment
(Perform adjustment without removing the cassette controller.) 1) Adjustment of Sup and Tu guide roller height <Method and description> (1) Perform ± 1/4 shift, then if thire envelope wave's ratio of MAX. to MIN. are 60% or less, adjust again the height of guide roller. (Refer to Fig. 2) (2) Finally adjust the lock screw of Sup and Tu guide roller. (3) Once perform unloading and then loading to set the PB mode, and make sure that the envelope waveform does not change. 2) Adjustment of playback SWP <Method and description> (1) Playback the alignment tape for switch point adjustment. (2) Perform SWP automatic adjustment with adjustment remote control.
Fig. 2
7-2
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