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Extracted text from sony dvpnc 675 p service manual (Ocr-read)
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SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
1. Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4. Look for parts which, though functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
5. Check the line cord for cracks and abrasion.
Recommend the replacement of any such line cord to the
customer.
6. Check the B+ voltage to see it is at the values specified.
7. Check the antenna terminals, metal trim, "metallized" knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
: LEAD FREE MARK
Unleaded solder has the following characteristics.
Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5mA (500 microampers).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
TW-540A. Follow the manufacturers' instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indication
is 0.75V, so analog meters must have an accurate low voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
OR DOTTED LINE WITH
MARK
ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.ATTENTION AU COMPOSANT AYANT RAPPORT
Ã- LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
DVP-NC675P
To Exposed Metal
Parts on Set
0.15 µF
1.5 k AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
Unleaded solder
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
WARNING!!
WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH
THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO
CONFIRM LASER BEAM EMISSION, BE SURE TO OBSERVE
FROM A DISTANCE OF MORE THAN 25 cm FROM THE SURFACE
OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK.
CAUTION:
The use of optical instrument with this product will increase eye
hazard.
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TABLE OF CONTENTS
SERVICE NOTE
1. Note on Removing the Upper Case ......................... 5
2. Disc Removal Procedure .......................................... 5
3. Note on Removing the Table Assy ........................... 5
4. Note on Mounting the Gears .................................... 6
5. Caution Point on the PWB IF-114 ............................ 6
1. GENERAL
Precautions................................................................. 1-1
About this Manual ........................................................ 1-1
This Player Can Play the Following Discs ................... 1-1
Index to Parts and Controls ......................................... 1-1
Guide to the Control Menu Display ............................. 1-2
Hookups.......................................................................... 1-3
Hooking Up the Player ................................................ 1-3
Step 1: Unpacking ....................................................... 1-3
Step 2: Inserting Batteries into the Remote ................ 1-3
Step 3: Connecting the Video Cords ........................... 1-3
Step 4: Connecting the Audio Cords ........................... 1-4
Step 5: Connecting the Power Cord ............................ 1-5
Step 6: Quick Setup .................................................... 1-5
Playing Discs .................................................................. 1-6
Playing Discs ............................................................... 1-6
Resuming Playback from the Point Where You Stopped
the Disc (Multi-disc Resume) ................................... 1-7
Using the DVDs Menu ................................................ 1-7
Selecting ORIGINAL or PLAY LIST on a
DVD-RW Disc ........................................................... 1-7
Playing VIDEO CDs with PBC Functions
(PBC Playback) .........................................................
1-7
Various Play Mode Functions
(Program Play, Shuffle Play, Repeat Play,
A-B Repeat Play) ...................................................... 1-7
Searching for a Scene .................................................... 1-9
Searching for a Particular Point on a Disc
(Search, Scan, Slow-motion Play, Freeze Frame) ... 1-9
Searching for a Title/Chapter/Track/Index/Scene,
etc. ............................................................................ 1-9
Searching by Scene (Picture Navigation) ................... 1-9
Viewing Information About the Disc.............................1-10
Checking the Playing Time and Remaining Time.....1-10
Sound Adjustments......................................................1-10
Changing the Sound .................................................1-10
TV Virtual Surround Settings (TVS)..........................1-11
Enjoying Movies ............................................................1-11
Changing the Angles .................................................1-11
Displaying the Subtitles .............................................1-11
Adjusting the Playback Picture
(CUSTOM PICTURE MODE) .......................................... 1-11
Sharpening the Outline of an Image
(SHARPNESS) .......................................................1-12
Playing a DATA CD.......................................................1-12
About MP3 Audio Tracks and JPEG Image Files ......1-12
Playing DATA CDs with MP3 Audio Track and JPEG
Image Files .............................................................1-12
Specifying the slideshow duration .............................1-13
Selecting an effect for image files in the slideshow .. 1-13
Using Various Additional Functions..............................1-14
Locking Discs (CUSTOM PARENTAL CONTROL,
PARENTAL CONTROL)..........................................1-14
Controlling Your TV with the Supplied Remote .........1-14
Settings and Adjustments.............................................1-15
Using the Setup Display ............................................1-15
Setting the Display or Sound Track Language
(LANGUAGE SETUP)............................................1-15Settings for the Display (SCREEN SETUP)..............1-16
Custom Settings (CUSTOM SETUP) ........................1-16
Settings for the Sound (AUDIO SETUP) ...................1-16
Additional Information ...................................................1-16
Troubleshooting......................................................... 1-16
Self-diagnosis Function (When letters/
numbers appear in the display) ..............................1-17
Glossary....................................................................1-17
Language Code List..................................................1-18
2. DISASSEMBLY
2-1. Disassembly ........................................................... 2-1
2-2.Upper Case ............................................................ 2-1
2-3. Front Panel Section ............................................... 2-2
2-4.Rear Panel Section ................................................ 2-2
2-5. MV-044 Board ........................................................ 2-3
2-6.IF-114 Board .......................................................... 2-3
2-7. Table Assy ............................................................. 2-4
2-8.Loading Motor Assy .............................................. 2-5
2-9.Optical Pick-Up ...................................................... 2-5
2-10. Power Block ........................................................... 2-6
2-11.IF-114 and FR-218 Boards .................................... 2-6
2-12. Internal Views ........................................................ 2-7
2-13.Circuit Boards Location ......................................... 2-8
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram ........................................... 3-1
3-2.System Control/Signal Processor
Block Diagram ..................................................... 3-3
3-3.RF/Servo Block Diagram ....................................... 3-5
3-4. Audio Block Diagram ............................................. 3-7
3-5. Video Block Diagram ............................................. 3-9
3-6. Interface Control Block Diagram..........................3-11
3-7. Power Block Diagram...........................................3-13
4. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1. Frame Schematic Diagram .................................... 4-1
4-2. Printed Wiring Boards and Schematic Diagram .... 4-3
Waveforms ............................................................. 4-4
MV-044 Printed Wiring Board ............................. 4-5
MV-044 (Drive) Schematic Diagram ................... 4-7
MV-044 (CPU, Servo-DSP, AVDEC) Schematic
Diagram ............................................................ 4-9
MV-044 (Video) Schematic Diagram ................4-11
MV-044 (Audio) Schematic Diagram .................4-13
MV-044 (PS Through) Schematic Diagram......4-15
IF-114 (If Com) Printed Wiring Board ...............4-17
IF-114 (If Com) Schematic Diagram.................4-19
SW-423 (Switch) Printed Wiring Board .............4-21
SW-423 (Switch) Schematic Diagram...............4-23
FR-218 (Function SW) Printed Wiring Board... 4-25
FR-218 (Function SW) Schematic Diagram.....4-27
SE-145 (Sensor), MD-105 (MD Interface)
Printed Wiring Board......................................4-29
SE-145 (Sensor), MD-105 (MD Interface)
Schematic Diagram........................................4-31
Power Block (SRV1487UC)
Printed Wiring Board......................................4-33
Power Block (SRV1487UC)
Schematic Diagram........................................4-35
Power Block (SRV1501WW)
Printed Wiring Board......................................4-37
Power Block (SRV1501WW)
Schematic Diagram........................................4-39