NAD S-570 Service manual

DRAFT DATE: 1 DEC, 2003

NAD

SERVICE MANUAL

S570

570

DVD / VCD / CD

DVD / VCD / CD

S

PLAYER

PLAYER

1-4

PRPDUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS

THE LIGHTNING FASH WITH ARROWHEAD SYMBOL, WITHIN AN

RAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE

WITHIN THE

S ENCLOSURE THAT MAY BE OF SUFFCIENT MAGNITUDE TO

IS
INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORANT
OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE
LITERATURE ACCOMPANYING THE APPLIANCE.

CAUTION: DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN
ANYWAY. NEVER PERFORM CUSTOMINIZED INSTALLATIONS
WITHOUT MANUFACTURER’ S APPROVAL. UNAUTHORIZED
MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY
LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY
DAMAGE OR USER INURY.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE
THOROUGHLY FAMILIAR WITH ALL OF THE FOLOWING SAFETY
CHECKS AND SERVICING GUIDELINS. TO DO OTHERWISE,
INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO
THE USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR
PROTECTION FROM A.C. LINE SHOCK.

SAFETY CHECKS

AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRCTED,
A CHECK SHOULD BE MADE OF THE FOLLOWING.

SUBJECT: FIRE &SHOCK HAZARD

1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A
WAY AS TO AVOID POSSIBILITY OF ADJACENT COMPONET SHORTS.
THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE
TRANSPORTED TO AND FROM THE REPAIR SHOP.

2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES
SUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN
RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE
BEEN REINSTALLED PERORIGINAL DESIGN. BE SURE THAT THE
SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN
DEFEATED.

3. SOLDERING MUST BE INSPECTED TO DISVCOVER POSSIBLE
COLD SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER
POINTS. BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.

4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR
DETERRIORATION TO PARTS AND COMPONENTS. FOR FRAYED
LEADS, DAMAGED INSULATION (INCLUDING A.C. CORD).AND
REPLACE IF NECESSARY FOLLOW ORIGINAL LAYOUT, LEAD
LENGTH AND DRESS.

5. NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE
OR A RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION
AROUD PROTRUNING METAL SURFACES MUST BE AVOIDED.

6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPRO OF
RESISTORS, CAPAICTORS, ETC. MUST BE REPLACED WITH EXACT
FACTORY TYPES. DO NOT USE REPLACEMENT COMPONETS
OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED
CIRCUIT MODIFICATIONS.

7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C.
LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE
CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS.
HANDLE ADN SCREWS) TO BE SURE THE SET IS SAFET TO
OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE
A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C.
VOLTMETER, HAV ING 5000 OHMS PER VOLT OR MORE SENSITIVITY,
IN THE FOLLOWING MANNER; CONNECT A 1500OHM 10 WATT
RESISTOR, PARALLELED BY A. 15 MFD, 150.V A.C. TYPE CAPACITOR
BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE,
CONDUIT, ETC.) AND THE EXPPOSED METALLIC PARTS, ONE AT A
TIME.
MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500
OHM RESISTOR AND .15 MFD CAPACITOR.
REVERSE THE A.C. PLUG AND REPEAT A. C. VOLTAGE
MEASUREMENTS FOR EACH EXPOSED METALLIC PART.
VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. THIS

CORRESPONDS TO 0.5 MILLIAMP A.C. ANY VALUE EXCEEDING THIS
LIMIT CONSTITUTED A POTENTIAL SHOCK HAZARD AND MUST BE
CORRECTED IMMEDIATELY.

SUBJECT: GRAPHIC SYMBOLS

EQUILATE
PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE”
PRODUCT’
CONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCELAMATION POINT WITHIN AN EQUILATERAL TRIANGLE

SUBJECT: TIPS ON PROPER INSTALLATION

1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS,
CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER OR
CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR
FLOW.

2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS:
OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR,
NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS
FACTOR, ETC.

3. AVOID PALCEMNET WHERE DRAPERIES MAY OBSTRUCT
REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE
USE OF DECORATIVE SCARVES OR OTHER COVERINGS
WHICH MIGHT OBSTRUCT VENTILATION.

4. WALL AND SHELF MOUNTED INSTALLATIONS USING A
COMMERCIAL MOUNTING KIT. MUST FOLLOW THE FACTORY
APPROVED MOUNTING INSTRUCTIONS A PRODUCT
MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS
ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN
SPACERS) TO PROVIDE ADEQUATE AIP FLOW ACROSS THE
BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST
NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE
TEST ON CUSTOMIZED INSTALLATIONS.

5. CAUTION CUSTOMERS AGNINST THE MOUNTING OF A
PRDUCT ON SLOPING SHELF OR TILTED POSITION, UNLESS
THE PRODUCT IS PROPERLY SECURED.

6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE
ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER
ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL
CASTERS ACROSS THRESHOLDS OR DEEP POLE CARPETS.

7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR
STAAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS
LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC
MODEL OF THELVISION RECEIVER OR GENERICALLY
APPROVED FOR USE WITH T.V.’ S OF THE SAME OR LARGER
SCREEEN SIZE.

8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION
CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS
SPROUTING FROM A SINGAL OUTLET CAN LEAD TO
DISASTROUS CONSEQUENCES TO HOME AND FAMILY.

1-5

SERVICING PRECAUTIONS

CAUTION:

Before servicing the DVD player covered by this service
data and its supplements and addends, read and follow
the SAFETY PRECAUTIONS. NOTE: if unforeseen
circumstances create conflict between the following
servicing precautions and any of the safety precautions in
this publications, always follow the safety precautions.
Remembers Safety First:

General Servicing Precautions

1. Always unplug the DVD player AC power cord from the AC
power source before:

(1) Removing or reinstalling any component, circuit board,

module, or any other assembly.

(2) Disconnection or reconnecting any internal electrical

plug or other electrical connection.

(3) Connection a test substitute in parallel with an

electrolytic capacitor.

Caution: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an
explosion hazard.

2. Do not spray chemicals on or near this DVD player or
any of its assemblies.

3. Unless specified otherwise in this service data, clean
electrical contacts by applying an appropriate contact
cleaning solution to the contacts with a pipe cleaner,
cottontipped swab, or comparable soft applicator.
Unless specified otherwise in this service data, lubrication
of contacts is not required.

4. Do not defeat any plug/socket B+ voltage interlocks
with which instruments covered by this service manual
might be equipped.

5. Do not apply AC power to this DVD player and/or any
of its electrical assemblies unless all solid-state device
heat sinks are correctly installed.

6. Always connect test instrument ground lead to the
appropriate ground before connection the test instrument
positive lead. Always remove the test instrument ground
lead last.

Insulation Checking Procedure

Disconnect the attachment plug from the AC outlet and
turn the power on. Connect an insulation resistance
meter (500V) to the blade of the attachment plug. The
insulation resistance between each blade of the
attachment plug and accessible conductive parts (Note 1)
should be more than 1M-ohm.
Note 1: Accessible Conductive Parts including Metal
panels, Input terminals, Earphone jacks, etc.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of
typical Es devices are integrated circuits and some field
effect transistors and semiconductor chip components.
The following techniques should be used to help reduce the
incidence of component damage caused by static electricity.

1. Immediately before handing any semiconductor
component or semiconductor equipped assembly, drain
off any electrostatic charge on your body by touching a
known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device,
which should be removed for potential shock reasons
prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such
an aluminum foil, to prevent electrostatic charge buildup
or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or
unsolder ES devices.

4. Use only an antistatic solder removal device. Some
solder removal devices not classified an “antistati c” can
generate electric charges sufficient to damage ES
devices.

5. Do not use freonpropelled chemicals. These can
generate electrical charge sufficient to damage ES
devices.

6. Do not remove a replacement ES device from its protect
tive package until immediately before you are ready to
install it. (Most replacement ES devices are packaged
with leads electrically shorted together by conductive
foam, aluminum foil, or comparable conductive material).

7. Immediately before removing the protective material
from the leads of a replacement ES device, touch the
protective material to the chassis or circuit assembly into
which the device will be installed.
Caution: Be sure no power is applied to the chassis or
circuit, and observe all other safety precautions.

8.Minimize bodily motions when handing unpackaged
replacement ES devices. (Normally harmless motion
such as the brushing together of your clothes fabric or
the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ES device.)

1-6

SPECIFICATIONS

DVD VIDEO PLAYER

POWER SUPPLY……………………………………………… AC 230V,50Hz (EUR)/120V,60Hz(US/CANADA)
Power consumption…………………………………………. 30W
External dimensions ………………………………………… 435×80×280mm
Weight (net) …………………………………………………… 4.6kg
Signal system…………………………………………………. PAL (EUR)/NTSC (USA/CANADA)
Laser ……………………………………………………………. Semiconductor laser, wavelength 650nm
Frequency range(digital audio) …………………………….. 2Hz to 22kHz
Signal-to-noise………………………………………………… More than 102dB(A-WEIGHTED)
Audio dynamic ……………………………………………….. More than 92dB
Harmonic distortion ………………………………………….. 0.008%
Operating conditions …………………………………………. Temperature: 41° to 95°, operation status: Horizontal

OUTPUTS

Video output ………………………………………… ………… 1.0V (p-p), 75Ù, negative sync., RCA jack×1
S-video output ………………………………………… ………. (Y) 1.0V (P-P), 75Ù,negative sync., Mini DIN 4pin×1

(C) 0.286V (P-P), 75Ù

Component Video output …………………………………… (Y)1.0V (P-P), 75Ù,negative sync.,

Cr) 0.5V (P-P), 75Ù

(Cb

Scart Video output…………………………………………….. (CVBS)1.0V(P-P) ,75Ù,negative sync.,

(R G B)0.7V(P-P),75Ù
Audio output(digital audio) ………………………………….. 0.5V(p-p) 75Ù, RCA jack×1
Audio output(analog audio) …………………………………. 2.0Vrms(1kHz, 0dB), RCA jack×1

1 Power button and on/standby/off indicator
2 PROGRESSIVE SCAN indicator
3 DVD tray
4 PLAY button
5 PAUSE buttons
6 SKIP buttons
7 MENU button

8 SELECT/navigation buttons
9 HDCD indicator
10 Display window
11 OPEN/CLOSE button
12 STOP button
13 SCAN buttons
14 PROGRESSIVE SCAN button

FRONT PANEL

Identification of Controls

1 DIGITAL OUT COAX Jack
2 DIGITAL OUT OPTICAL (With Dust Protection Cap) Jack
3 MIXED AUDIO OUT (L & R) Jacks
4 S-VIDEO OUT Jack
5 VIDEO OUT Jack

6 COMPONENT VIDEO OUT Jacks
7 +12V TRIGGER IN Jack
8 AUTO TRIGGER ON-OFF Switch
9 EXT. IR IN Jack
10 Power cord

1 DIGITAL OUT COAX Jack
2 DIGITAL OUT OPTICAL (With Dust Protection Cap) Jack
3 MIXED AUDIO OUT (L & R) Jacks
4 S-VIDEO OUT Jack
5 Composite VIDEO OUT Jack
6 COMPONENT VIDEO OUT Jacks

7 VIDEO OUTPUT S-VIDEO-SCART/RGB Switch
8 SCART/RGB OUT Jack
9 12V TRIGGER IN jack
10 AUTO TRIGGER ON-OFF Switch
11 EXT. IR IN Jack
12 Power cord socket

6

NA

D

PROGRESSIVE

SCAN

HDCD

SKIP

SCAN

DVD Player S570

1

9

1

13

2

REAR PANEL (NORTH AMERICAN VERSION)

3

Multichannel

4 5 7 8

PAUSE

PLAY

OPEN/CLOSE

MENU

PROGRESSIVE

STOP

SCAN

10 11 12814

COMPONENT

VIDEO OUT

MIXED

DIGITAL OUT

COAXIAL

AUDIO OUT

OPTICAL

R

1

2

3

VIDEO OUT S VIDEO

4

6

5

REAR PANEL (EUROPEAN VERSION)

COMPONENT

VIDEO OUT

MIXED

AUDIO OUT

OPTICAL

L

R

VIDEO OUT S VIDEO

DIGITAL OUT

COAXIAL

Y

Cb/
Pb

Cr/
Pr

+12V TRIGGER IN EXT. IR IN

AUTO

TRIGGER

ON OFF

88

8 9

7

AC IN

10

Y

VIDEO

Cb/

OUTPUT

Pb

SCART/RGB

OUT

Cr/

S-VIDEO

SCART/RGB

Pr

+12V TRIGGER IN EXT. IR IN

AUTO

TRIGGER

ON OFF

AC IN

1

2

3

4

6

7

5

8

11

10

9

12

DISPLAY WINDOW

1 DVD indicator
2 VCD indicator
3 PBC indicator for VCD
4 MP3 indicator
5 DTS indicator
6 DOLBY DIGITAL indicator
7 ANGLE indicator
8 PROGram indicator
9 TITLE Indicator

REMOTE CONTROL

ON

AUDIO

REPEAT

PR OG RA M

MARKER

1

4

7

SLO W

TITLE

DISP

OPEN/CLOS E

SKIP

10 CHAPTER Indicator
11 Operating status indicator
12 Playback indicator
13 Pause indicator
14 Repeat playback mode indicators
15 Total playing time display
16 Title/track number display
17 Chapter number display
18 L R indicator

OF F

ANGLE

SUBTITLE

RANDOM

RPT A-B

ZO OM

CLEA R

SEARCH

DIMMER

2

3

6

5

9

8

0

SCAN

SETUP

MENU

ENT E R

RTN

STOP

PAUS E /STE P

PLA Y

SKIP

4

DVD

1 POWER ON, POWER OFF
2 SETUP
3 Transport control keys OPEN/CLOSE, STOP, PAUSE, STEP, PLAY, SKIP,

SCAN, SLOW

4 ENTER and navigation buttons
5 RETURN
6 TITLE, MENU
7 DISPLAY
8 CLEAR
9 PROGRAM
10 REPEAT

11 REPEAT A-B
12 AUDIO
13 SUBTITLE
14 ANGLE
15 Numerical buttons
16 DIMMER
17 MARKER, SEARC H
18 ZOOM
19 RANDOM

EXPLODED VIEW

T001

F002

F003

F004

F005

F012

F006

F014

F007

S004

S002

F009

C002

S003

F010

C001

C004

S002

C013

C005

C006

S005

S006

S002

S007

S002

C007

S009

C008

C014

C009

C010

S011

S012

C012

C011

R002

S013

S002

R001

S008

S010

S010

C003

S004

F001

F008

S001

F011

S014

F013

C015

S008