Zenith DVC2200 User manual

zenith
SERVICE MANUAL
Product Type:
Chassis:
Manual Series:
Manual Part #:
Model Line:
Product Year:
DVD PLAYER
DVC
VR161
923-03437
C
2000
Model Series:
DVC2200
DVC2250
CONTENTS
Customer Controls
Exploded Views
Circuit Diagrams
P.C.Board Layout
Published by Technical Publications
Zenith Electronics Corporation
201 James Record Road - Huntsville, Alabama 35824-1513
©Copyright April 2000 by Zenith Electronics Corporation
Printed in U.S.A.
DG 4.5k

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audio-visual service
technicians.
When servicing this product, under no circumstances should the original design
be modified or altered without permission from Zenith Electronics Corporation.
All components should be replaced only with types identical to those in the
original circuit and their physical location, wiring and lead dress must conform
to original layout upon completion of repairs.
Special components are also used to prevent x-radiation, shock and fire hazard.
These components are indicated by the letter “x” included in their component
designators and are required to maintain safe performance. No deviations are
allowed without prior approval by Zenith Electronics Corporation.
Circuit diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes into
the set is not delayed unti! the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way. Never perform
customized installations without manufacturer’s approval. Unauthorized
modifications will not only void the warranty, but may lead to property damage
or user injury.
Service work should be performed only after you are thoroughly familiar with
these safety checks and servicing guidelines.
GRAPHIC SYMBOLS
The exclamation point within an equilateral triangle is intended
to alert the service personnel to important safety information in
the service literature.
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the service personnel to the presence
of noninsulated “dangerous voltage” that may be of sufficient
magnitude to constitute a risk of electric shock.
The pictorial representation of a fuse and its rating within an
equilateral triangle is intended to convey to the service personnel
the following fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED
NEAR EACH FUSE.
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line shock.
After the original service problem has been corrected, make a check of the
following:
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of adjacent
component shorts. This is especially important on items transported to and
from the repair shop.
2. Verify that all protective devices such as insulators, barriers, covers, shields,
strain reliefs, power supply cords, and other hardware have been reinstalled
per the original design. Be sure that the safety purpose of the polarized line
plug has not been defeated.
3. Soldering must be inspected to discover possible cold solder joints, solder
splashes, or sharp solder points. Be certain to remove all loose foreign par-
ticles.
4. Check for physical evidence of damage or deterioration to parts and compo-
nents, for frayed leads or damaged insulation (including the AC cord), and
replace if necessary.
5. No lead or component should touch a receiving tube or a resistor rated at 1
watt or more. Lead tension around protruding metal surfaces must be avoided.
6. After re-assembly of the set, always perform an AC leakage test on all ex-
posed metallic parts of the cabinet (the channel selector knobs, antenna
terminals, handle and screws) to be sure that set is safe to operate without
danger of electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER
DURING THIS TEST. Use an AC voltmeter having 5000 ohms per volt or more
sensitivity in the following manner: Connect a 1500 ohm, 10 watt resistor,
paralleled by a .15 mfd 150V AC type capacitor between a known
good earth ground water pipe, conduit, etc.) and the exposed metallic parts,
one at a time. Measure the AC voltage across the combination of 1500 ohm
resistor and .15 mfd capacitor. Reverse the AC plug by using a non-polarized
adaptor and repeat AC voltage measurements for each exposed metallic part.
Voltage measured must not exceed 0.75 volts RMS. This corresponds to 0.5
milliamp AC. Any value exceeding this limit constitutes a potential shock
hazard and must be corrected immediately.
CM151
A.C. Voltmeter
| 0.16uF |
Good
Earth
Ground
he
i
Place
this
probe
such
as
the
Water
ies
on
each
exposed
Pipe,
Conduit,
etc.
1600
OHM
metal
part.
10 WATT
X-RADIATION
1. Be sure procedures and instructions to all service personnel cover the subject
of x-radiation. The only potential source of x-rays in current TV receivers is
the picture tube. However, this tube does not emit x-rays when the HV is at
the factory-specified level. The proper value is given in the applicable
schematic. Operation at higher voltages may cause a failure of the picture
tube or high-voltage supply and, under certain circumstances may produce
radiation in excess of desirable levels.
2. Only factory-specified CRT anode connectors must be used.
3. It is essential that the service personnel have available an accurate and
reliable high-voltage meter.
4. When the high-voltage circuitry is operating properly, there is no possibility
of an x-radiation problem. Every time a color chassis is serviced, the brightness
should be run up and down while monitoring the high voltage with a meter,
to be certain that the high voltage does not exceed the specified value and
that it is regulating correctly.
5. When troubleshooting and making test measurements in a product with a
problem of excessively high voltage, avoid being unnecessarily close to the
picture tube and the high voltage power supply. Do not operate the product
longer than necessary to locate the cause of excessive voltage.
6. Refer to HV, B+, and shutdown adjustment procedures described in the
appropriate schematics and diagrams (where used).
IMPLOSION
1. All direct view picture tubes are equipped with an integral implosion
protection system; take care to avoid damage during installation.
2. Use only the recommended factory replacement tubes.
TIPS ON PROPER INSTALLATION
1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting
shelf space over, or close to, a 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 a factor, etc.
3. Avoid placement where draperies may obstruct venting. The customer should
also avoid the use of decorative scarves or other coverings that 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 air flow across the bottom. Bolts or screws
used for fasteners must not touch any parts or wiring. Perform leakage tests
on customized installations.
5. Caution customers against mounting a product on a sloping shelf or in a
tilted position, unless the receiver is properly secured.
6. A product on a roll-about cart should be stable in its. mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small
casters across thresholds or deep pile carpets.
7. Caution customers against using a cart or stand that has not been listed by
Underwriters Laboratories, Inc. for use with its specific model of television
receiver or generically approved for use with TVs of the same or larger screen
size.
8. Caution customers against using extension cords. Explain that a forest of
extensions, sprouting from a single outlet, can lead to disastrous
consequences to home and family.
CN-001C€ SAFETY

CONTENTS
SECTION 1 ....SUMMARY
SECTION 2 ....CABINET & MAIN CHASSIS
SECTION 3 ....ELECTRICAL
SECTION 4 ... .MECHANISM

SECTION 1
SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ...-scsccucseene FIC I
SERVICING PRECAUTIONS 04. 3 rad vacsemnansncannltgn sand emmunuade 1-4
«General Servicing Precautions
eInsulation Checking Prodedure
*Electrostatically Sensitive Devices
SPECIFICATIONS: scasiscsiteseseductens'ssscnesacusscuseasindaderiaiucvassiateicvausheuedassaseuaesciaitt tive eeuseteeeeeaaenasts 1-5
LOCATION OF CUSTOMER CONTROLS inciisssssisscassssssccsveradsarsatentnensiessversustererensseceeatbnetes 1-6

SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this service
data and its supplements and ADDENDUMS, read and fol-
low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir-
cumstances create conflict between the following servicing
precautions and any of the safety precautions in this publi-
cations, always follow the safety precautions.
Remember Safety First:
General Servicing Precautions
1. Always unplug the DVD 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) Connecting a test substitute in parallel with an elec-
trolytic 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 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,
cotton-tipped 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
whitch instruments covered by this service manual might
be equipped.
5.Do not apply AC power to this DVD and/or any of its
electrical assemblies unless all solid-state device heat
sinks are cerrectly 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 blades of the attachment plug. The insulation resis-
tance between each blade of the attachment plug and acces-
sible conductive parts (Note 1) should be more than 1M-
ohm.
Note 1 : Accessible Conductive Parts including Metal pan-
els, 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 eleciricity.
1. Immediately before handling any semiconductor compo-
nent or semiconductor-equipped assembly, drain off any
electrostatic charge on your body by touching a known
earth ground. Alternatively, obtain and wear a commer-
cially 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
as 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 anti-static solder removal device. Some
solder removal devices not classified a “anti-static” can
generate electrical charges sufficient to damage ES
devices.
5.Do not use freon-propelled chemicals. These can
generate electrical charge sufficient to damage ES
devices.
6. Do not remove a replacement ES device from its protec
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 handling 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 elec-
tricity sufficient to damage an ES device.)

DVD VIDEO PLAYER
Power supply
Power consumtion
Mass
External dimensions
Signal system
Laser
Frequency range (digital audio)
Signal-to-noise ratio (digital audio)
Audio dynamic range (digital audio)
Harmonic distortion(digital audio)
Wow and flutter
Operations
OUTPUTS
Video outputs
S video outputs
Component video output
Audio output(digital audio)
Audio output(optical audio)
Audio output(analog audio)
SPECIFICATIONS
120V, 60Hz
16W
3.2kg(7.1lbs)
430 x 88 x 215 (W x Hx D)
NTSC
Semiconductor laser, wavelength 650nm
4Hz to 20kHz
More than 100dB (EIAJ)
More than 95dB (EIAu)
0.008%
Below measurable level (less than +0.001%(W.PEAK)) (ElAJ)
Temperature : 5°C(41°F) to 35°C(95°F),
Operation status : Horizontal
1.0V(p-p), 75Q, negative sync., RCA jack x 1
(Y)1.0V(p-p), 75Q, negative sync.,Mini DIN 4-pin x 1
(C)0.286V(p-p), 75Q
(Y)1.0V(p-p), 75Q,negative sync., RCA jack x 1
(Pb)/(Pr) 0.7V(p-p), 75Q
0.5V(p-p), 75Q, RCA jack X 1
Optical connector x 1
2.0Vrms (1kHz, 0dB), 330Q, RCA jack (L, R) x 1
*Designs and specifications are subject to change without notice.
“Weight and dimensions shown are approximate.

LOCATION OF CUSTOMER CONTROLS
POWER INDICATOR
SELECT/ENTER BUTTON
STOP BUTTON
DISC TRAY PAUSE/STEP BUTTON
PLAY BUTTON
DISPLAY WINDOW
POWER INDICATOR REMOTE SENSOR
OPEN/CLOSE BUTTON
[DISPLAY WINDOW
SKIP/SCAN BUTTONS
OPERATING STATUS INDICATOR
CD INDICATOR
DVD INDICATOR
ARROW
BUTTONS
MENU BUTTON
PROGRAM INDICATOR
RANDOM INDICATOR
REPEAT PLAYBACK
MODE INDICATORS
CHP/TRK
| eeece
oe
ry
eocce, “coves ‘cecce
TOTAL PLAYING TIME/ELAPSED
TIME INDICATORS
CHAPTER/TRACK NUMBER INDICATOR
ANGLE ICON INDICATOR
TITLE NUMBER INDICATOR
REAR PANEL
COMPONENT VIDEO OUT JACKS
COAXIAL DIGITAL AUDIO OUT JACK
POWER CORD
AUDIO OUT(L/R) JACKS
OPTICAL DIGITAL
AUDIO OUT JACK
S-VIDEO OUT JACK
VIDEO OUT JACK i
DOLBY DIGITAL AUDIO OUT JACKS
1-6

REMOTE CONTROL
(DVC2200)
POWER button
SETUP button
ZOOM button
MARKER button
DISPLAY button
PLAY button
STOP button
SLOW button
CLEAR button
AUDIO button
SUBTITLE button
REPEAT button
PROGRAM button
(DVC2250)
POWER button
PLAY button
REV SKIP button
PAUSE/STEP button
SELECT/ENTER button
SETUP button
DISPLAY button
NUMBER button
CLEAR button
ANGLE button
SUBTITLE button
AUDIO button
ILLUMINATE button
REPEAT button
OPEN/CLOSE button
MENU button
TITLE button
SEARCH button
RETURN button
SELECT/ENTER button
PAUSE/SETUP button
SCAN button
SKIP button
SOUND buttons
ANGLE button
a-b button
RANDOM button
DVD/VCR/CATV/TV
Selector Switch
FWD button
STOP button
OPEN/CLOSE button
ARROW ( volume/channet) buttons
RETURN ov neu) button
3D SOUNDwute) button
PROGRAM button
MENU button
TITLE buttons
MARKER-SEARCH button
ZOOM button
RANDOM button
A-B button
FWD/REV SLOW/SCAN
Shuttle Ring

1. DISASSEMBLY
CABINET DISASS
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
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DISASSEMBLY
CAUTION BEFORE STARTING SERVICING
Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a
proper grounding treatment as required.
Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a
magnetized screw driver in servicing. Several kinds of screws are used and some of them need special
cautions. That is, take care of the tapping screws securing molded patrs and fine pitch screws used to secure
metal parts. If they are used improperly, the screw holes will be easily damaged and the parts can not be fixed.
CABINET
DISASSEMBLY
3.
Front
Panel
1.
Top
Case
1. Eject
the
disc
tray.
(See
Fig.
2-2)
1.
Release
7
screws
(A).
(See
Fig.
2-1)
2.
Remove
the tray
door.
(See
Fig.
2-2)
2.
Lift
the top case
with
holding
the
back
of
it,
3.
Release
2
screws
(B).
and
remove
it
in
the
direction
of
the
arrow
4.
Pull
the
front
pane!
toward
you
while
pressing
7 stoppers to disengage, and remove the front
panel. (See Fig. 2-3)
2. Tray Door
1.Eject the disc tray.
2.Lift up the tray door in the direction of the
arrow.
Tray Door
2-2