DVP-NW50 - Sony DVD Service Manual (repair manual)

dvp-nw50 service manual
Model
DVP-NW50
Pages
65
Size
7.83 MB
Type
PDF
Document
Service Manual
Brand
Device
DVD
File
dvp-nw50.pdf
Date

Read Sony DVP-NW50 Service Manual online

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
US Model
DVD PLAYER
9-879-748-03
2006E16-1
© 2006.05
Ver. 1.2  2006.05
SPECIFICATIONS
DVP-NW50
This Unit incorporates Dolby* Digital and Pro Logic surround and
the DTS** Digital Surround System.
* Manufactured under license from Dolby Laboratories.
“Dolby,” “Pro Logic,” and the double-D symbol are trademarks
of Dolby Laboratories.
** Manufactured under licence from Digital Theater System, Inc.
“DTS” and “DTS Digital Surround” are registered trademarks
of Digital Theater System, Inc.
Model Name Using Similar Mechanism
NEW
Mechanism Type
IDM-520DR
Laser
Signal format system
Audio section
Frequency response
Signal-to-noise ratio
Rated output power 1 kHz into 8 ohms THD: 3 %
Reference Output Power
(8ohms 1 kHz THD:3%)
(8ohms 30 Hz THD:3%)
Harmonic distortion
Wow and flutter
Tuner section
Frequency range
Signal-to-noise ratio
THD at 400 Hz
THD at 1 kHz
Antenna (aerial)
Antenna (aerial) terminals
Intermediate frequency
AM tuner section
Antenna (aerial)
Intermediate frequency
Semiconductor laser 
CD: 
λ = 780 nm, DVD: λ = 650 nm
Emission duration: continuous
NTSC
20 Hz to 20 kHz (
± 1 dB)
95 dB 
50 W + 50 W
FRONT: 50 W + 50 W
CENTER: 50 W
SURROUND: 50 W + 50 W
SUB WOOFER: 50 W
Less than 0.1 %
Less than detected value
(
± 0.001 % W PEAK)
87.5 Hz to 108 kHz (100 kHz step)
530 kHz to 1710 kHz (10 kHz step)
54 dB
76 dB  (MONO)
70 dB  (STEREO) 
0.5 %
0.3 % (MONO)
0.5 % (STEREO)
FM wire antenna (aerial)
75 ohms, unbalanced
10.7 MHz 
AM loop antenna (aerial)
450 kHz
Video section
Composite video out:
S1 video out:
General
DC power consumption:
Operating temperature:
Dimensions:
Mass:
Supplied accessories :
• Remote commander (remote)(RM-ANU001)(1)
• Wall mounting bracket (1)
• Wall stopper (4)
• TEMPLATE (1)
• Plug-in 4P terminal (for speakers)(3)
• Plug-in 6P terminal (for AC power unit)(1)
• Screws for fixing the Unit to the wall mounting bracket (Short)(4)
• Screws for wall stopper (long)(4)
• Screws for AM antenna (2)
• AM loop antenna (aerial)(1)
• R6 (size-AA) battery (2)
• Utility for In-Wall Unit CD-ROM (1)
• User’s manual (1)
• Installer’s manual (1)
Design and specifications are subject to change without notice.
1 Vp-p 75 ohms
Y: 1 Vp-p 75 ohms
V: 0.286 Vp-p 75 ohms
DC 29.5 V/1 A
DC 29.5 V/1 A
DC 14 V/1.5 A
0 ˚C to 40 ˚C (– 32 ˚F to 104 ˚F)
230 
× 266 × 104 mm
(9 
1
/
8
 
× 10 
1
/
2
 
× 4 
1
/
8
 inches)
(w/h/d)  
2.7 kg (5 lbs 15 oz)
2
DVP-NW50
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER  DIODE  AND  FOCUS  SEARCH  OPERA TION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 °C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on the
exterior.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
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 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-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 0.75 V, 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 2 V AC range are suitable.  (See
Fig. A)
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED  LINE
WITH  MARK  
0
  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.
3
DVP-NW50
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
4
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1.
Disassembly Flow ........................................................... 10
3-2.
Front Kit Assy, Main Kit Assy ........................................ 11
3-3.
MAIN Board .................................................................... 11
3-4.
Tuner, DVD AMP Board ................................................. 12
3-5.
Front Assy ........................................................................ 12
3-6.
FRONT Board ................................................................. 13
3-7.
Speaker ............................................................................ 13
3-8.
DVD SERVO Board ........................................................ 14
3-9.
DVD Mecha Assy ............................................................ 14
3-10. Motor Assy ...................................................................... 15
3-11. Door Assy ........................................................................ 15
3-12. Rotary Switch, DC Motor ............................................... 16
4.
CONFIRMATION OF NETWORK SETTING
... 17
5.
ELECTRICAL ADJUSTMENTS
.......................... 20
6.
DIAGRAMS
6-1.
Block Diagram — DVD SERVO Section — ................. 23
6-2.
Block Diagram — MAIN (1) Section — ....................... 24
6-3.
Block Diagram — MAIN (2) Section — ....................... 25
6-4.
Block Diagram — MAIN (3) Section — ....................... 26
6-5.
Block Diagram — AMP Section — ............................... 27
6-6.
Printed Wiring Board — DVD SERVO Section — ....... 28
6-7.
Schematic Diagram — DVD SERVO Section (1/3) — . 29
6-8.
Schematic Diagram — DVD SERVO Section (2/3) — . 30
6-9.
Schematic Diagram — DVD SERVO Section (3/3) — . 31
6-10. Printed Wiring Board — MAIN Section (Side A) — .... 32
6-11. Printed Wiring Board — MAIN Section (Side B) — .... 33
6-12. Schematic Diagram — MAIN Section (1/5) — ............. 34
6-13. Schematic Diagram — MAIN Section (2/5) — ............. 35
6-14. Schematic Diagram — MAIN Section (3/5) — ............. 36
6-15. Schematic Diagram — MAIN Section (4/5) — ............. 37
6-16. Schematic Diagram — MAIN Section (5/5) — ............. 38
6-17. Printed Wiring Board — FRONT Section — ................. 39
6-18. Schematic Diagram — FRONT Section — ................... 40
6-19. Printed Wiring Board
— DVD AMP Section (Side A) — .................................. 41
6-20. Printed Wiring Board
— DVD AMP Section (Side B) — .................................. 42
6-21. Schematic Diagram — DVD AMP Section (1/3) — ...... 43
6-22. Schematic Diagram — DVD AMP Section (2/3) — ...... 44
6-23. Schematic Diagram — DVD AMP Section (3/3) — ...... 45
7.
EXPLODED VIEWS
7-1.
Overall Section ................................................................ 61
7-2.
Main Kit Assy .................................................................. 62
7-3.
Motor Assy ...................................................................... 63
8.
ELECTRICAL PARTS LIST
.................................. 64
4
DVP-NW50
SECTION 1
SERVICING NOTES
SERVICE POSITION
(DVD SECTION/MAIN BOARD/DVD AMP BOARD)
MAIN board
DVD AMP board
DVD section
insulation sheet 
tuner pack
Page of 65
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Here you can read online and download Sony DVP-NW50 Service Manual in PDF. DVP-NW50 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony DVP-NW50 DVD. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.