Sony DVP-NS300 Installation guide

Training Manual
5th Generation
DVD Player
Models: DVP-NS300 DVP-NC650
DVP-NS315 DVP-NC655P
DVP-NS400D DVP-CX875P
DVP-NS415 DVP-F25
DVP-NS500P DVO-F41MS
DVP-NS700P
DVP-NS715P
DVP-NS755P
DVP-NC600
Circuit Descriptions & Troubleshooting
DVP-NS415
DVP-NS655P DVP-NS875P

Table of Contents
1. What’s New?......................................1
Physical Differences............................................. 1
Features ................................................................. 2
Dual Laser Optical Block ..................................... 3
Disc Identification.................................................. 5
Super Audio Compact Disc (SACD) .................. 6
Logos ...................................................................... 7
Video Noise Reduction ........................................ 8
2.Blockdiagram ..................................10
3.PowerSupply ...................................12
Plug-In Communications .................................... 15
4.TestingandTestPointAccess.......18
5. Testing ...............................................22
Jigs and Tools ....................................................... 25
6. Troubleshooting...............................27
Process Flow........................................................ 27
7.Service/TestMode .........................32
8. Mechanical Operation .....................35
Powering the Unit................................................. 34
CD Mechanism Normal Operation.................... 35
Disc Loading, Stacker and Disc Clamping
Motor Drive Access.............................................. 37

1
1. What’s New?
Chapter 1 - What’s New?
The popular fifth generation Sony DVD players introduced for the years 2001 and 2002 are physically and
electrically different from previous generation players; they have greater appeal and are lower in cost.
PhysicalDifferences
The single disc players are thinner than the previous fourth generation models and take up less vertical space.
Some models are available in both black and silver (same model number) to blend with different decors. Two
models, DVP-F25 and DVP-F41, have slot type loading (like a car CD player) which makes them smaller; they
can also be played horizontally or vertically; a pedestal base can be attached to the side for vertical mounting, as
in Figure 1-1.
DVD slot
Models DVP-F25 / F41
FIGURE 1-1 - VERTICAL MOUNTED “F” SERIES DVD PLAYER

2
1. What’s New?
Features
These players can play computer “burned” -R and +RW (CD or DVD) discs. A built-in MP-3 decoder allows MP-
3 encoded CD’s to be played. All 5th generation players have outputs for composite video, component video (Y,
R-Y, B-Y) and Dolby Digital ™ / dts ® digital coax/optical digital audio (except DVP-F25 and DVP-F41 models
which only have high grade component video and optical audio outputs) Other features on some models are:
multi-format SACD music CD PB (audio); and high resolution 480p progressive video output.
Table 1-1 shows some of the features of the Fifth Generation models.
Table 1-1 -Sony’s Popular Fifth Generation DVD Players
Model Number Intro
Year * Type Feature
DVP-NS300 2001 1 disc tray Case = Blk or Silver finish. Does not
PB –R or +RW discs.
DVP-NS315 2002 1 disc tray Black or Silver finish
DVP-NS400D 2001 1 disc tray Built in 5.1 Digital Dolby Decoder
DVP-NS415 2002 1 disc tray Silver, Built in 5.1 Digital Dolby
Decoder
DVP-NS500P 2001 1 disc tray Progressive scan
DVP-NS700P 2001 1 disc tray Progressive scan
DVP-NS715P 2002 1 disc tray Progressive scan, Silver
DVP-NS755P 2002 1 disc tray Progressive scan, SACD, Built in 5.1
Digital Dolby Decoder, Blk.
DVP-NC600 2001 5 disc Changer No thinner case like the tray units.
DVP-NC650 2001 5 disc Changer SACD
DVP-NC655P 2002 5 disc Changer Progressive scan, Blk/Silver.
DVP-CX875P 2002 300 disc changer Progressive scan, Built in 5.1 Digital
Dolby Decoder.
DVP-F25 2002 1 disc slot Case = Blk or Silver finish.
DVP-F41MS 2002 1 disc slot Memory stick for JPEG pix view
* Optical Assemblies for 2001 year Models are KHM240AAA and KHM250AAA Optical
Assemblies for 2002 year Models are KHM270AAA and KHM275AHA.

3
1. What’s New?
DualLaser OpticalBlock
Disc Playback Characteristics
All fifth generation DVD models, (except basic model DVP-NS300) can play back computer made –R or +RW
discs.
Computer made (burned) –R or +RW discs have different characteristics than machine stamped counterparts
and stamped CDs have different characteristics than DVDs. To insure full compatibility, the optical block uses
two lasers. One is optimized for CDs and the other for DVDs.
To understand how separate lasers insure playback of computer burned discs, some basics are explained here.
The reflected Laser light from the disc to the optical block contains the data. DVD discs (including DVD-R and
+RW discs) reflect best in the 650-635nM wavelength band. CD discs (including –R or +RW discs) reflect light
best at 780nM.
Figure1-2 shows thatmaximum CD-R discreflection (RF) occursat 780nM. Since –Ror +RW discshavelower
reflectivity than stamped discs (reflectivity also varies from brand to brand) output is maximized if two lasers are
used: one operating at 648nM for DVDs and another at 780nM for CDs.
Optical Pick-up
650nM 780nM Wavelength
Reflective
Intensity for
CD-R
For DVD
CD = 1.2cm
DVD=0.6cm
For CD
Lens
KHM-240
FIGURE 1-2