Service Manuals, User Guides, Schematic Diagrams or docs for : ZENITH Audio DVD5201 hfe_zenith_dvd5201_5591_service_en

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SERVICE MANUAL                                                                             Model Series:
                                                                                            DVD5201
Product Type:    DVD Player                                                                 DVD5591
Chassis:         DVD2
Manual Series:   VR166
Manual Part #:   923-03461
Model Line:      D
Product Year:    2001




                                          CONTENTS
                   OVERVIEW ........................................................ 5
                   DISASSEMBLY .................................................... 8
                   MECHANISM .................................................... 10
                   ELECTRICAL ..................................................... 14
                   PARTS ............................................................ 28
                   DIAGRAMS ...................................................... 37
                   SCHEMATICS .................................................... 38
                                                     PRODUCT SAFETY GUIDELINES
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audio-visual service                                            A.C. Voltmeter
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                                                   0.15uF
                                                                                                                                                    Place this probe
                                                                                             Good Earth Ground
designators and are required to maintain safe performance. No deviations are                                                                        on each exposed
                                                                                             such as the Water
allowed without prior approval by Zenith Electronics Corporation.                                                            1500 OHM               metal part.
                                                                                             Pipe, Conduit, etc.
Circuit diagrams may occasionally differ from the actual circuit used. This way,
implementation of the latest safety and performance improvement changes into                                                  10 WATT
the set is not delayed until the new service literature is printed.

CAUTION: Do not attempt to modify this product in any way. Never perform                X-RADIATION
customized installations without manufacturer's approval. Unauthorized                  1.    Be sure procedures and instructions to all service personnel cover the
modifications will not only void the warranty, but may lead to property damage                subject of x-radiation. The only potential source of x-rays in current TV
or user injury.                                                                               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
Service work should be performed only after you are thoroughly familiar with
                                                                                              applicable schematic. Operation at higher voltages may cause a failure of
these safety checks and servicing guidelines.
                                                                                              the picture tube or high-voltage supply and, under certain circumstances
                                                                                              may produce radiation in excess of desirable levels.
GRAPHIC SYMBOLS
                                                                                        2.    Only factory-specified CRT anode connectors must be used.
              The exclamation point within an equilateral triangle is intended
              to alert the service personnel to important safety information in         3.    It is essential that the service personnel have available an accurate and
              the service literature.                                                         reliable high-voltage meter.

              The lightning flash with arrowhead symbol within an equilateral           4.    When the high-voltage circuitry is operating properly, there is no possibility
              triangle is intended to alert the service personnel to the presence             of an x-radiation problem. Every time a color chassis is serviced, the
              of noninsulated "dangerous voltage" that may be of sufficient                   brightness should be run up and down while monitoring the high voltage
              magnitude to constitute a risk of electric shock.                               with a meter, to be certain that the high voltage does not exceed the
                                                                                              specified value and that it is regulating correctly.
              The pictorial representation of a fuse and its rating within an
                                                                                        5.    When troubleshooting and making test measurements in a product with a
              equilateral triangle is intended to convey to the service personnel
                                                                                              problem of excessively high voltage, avoid being unnecessarily close to
              the following fuse replacement caution notice:
                                                                                              the picture tube and the high voltage power supply. Do not operate the
              CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
                                                                                              product longer than necessary to locate the cause of excessive voltage.
              REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED
              NEAR EACH FUSE.                                                           6.    Refer to HV, B+, and shutdown adjustment procedures described in the
                                                                                              appropriate schematics and diagrams (where used).
SERVICE INFORMATION
While servicing, use an isolation transformer for protection from AC line shock.        IMPLOSION
After the original service problem has been corrected, make a check of the              1.    All direct view picture tubes are equipped with an integral implosion
following:                                                                                    protection system; take care to avoid damage during installation.
                                                                                        2.     Use only the recommended factory replacement tubes.
FIRE AND SHOCK HAZARD
1. Be sure that all components are positioned to avoid a possibility of                 TIPS ON PROPER INSTALLATION
   adjacent component shorts. This is especially important on items trans-              1.    Never install any receiver in a closed-in recess, cubbyhole, or closely
   ported to and from the repair shop.                                                        fitting shelf space over, or close to, a heat duct, or in the path of heated
2. Verify that all protective devices such as insulators, barriers, covers,                   air flow.
   shields, strain reliefs, power supply cords, and other hardware have been            2.    Avoid conditions of high humidity such as: outdoor patio installations
   reinstalled per the original design. Be sure that the safety purpose of the                where dew is a factor, near steam radiators where steam leakage is a factor,
   polarized line plug has not been defeated.                                                 etc.
3. Soldering must be inspected to discover possible cold solder joints, solder
                                                                                        3.    Avoid placement where draperies may obstruct venting. The customer
   splashes, or sharp solder points. Be certain to remove all loose foreign
                                                                                              should also avoid the use of decorative scarves or other coverings that
   particles.
                                                                                              might obstruct ventilation.
4. Check for physical evidence of damage or deterioration to parts and compo-
                                                                                        4.    Wall- and shelf-mounted installations using a commercial mounting kit
   nents, for frayed leads or damaged insulation (including the AC cord), and
                                                                                              must follow the factory-approved mounting instructions. A product mounted
   replace if necessary.
                                                                                              to a shelf or platform must retain its original feet (or the equivalent
5. No lead or component should touch a receiving tube or a resistor rated at                  thickness in spacers) to provide adequate air flow across the bottom. Bolts
   1 watt or more. Lead tension around protruding metal surfaces must be                      or screws used for fasteners must not touch any parts or wiring. Perform
   avoided.                                                                                   leakage tests on customized installations.
6. After reassembly of the set, always perform an AC leakage test on all exposed        5.    Caution customers against mounting a product on a sloping shelf or in a
   metallic parts of the cabinet (the channel selector knobs, antenna terminals,              tilted position, unless the receiver is properly secured.
   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                6.    A product on a roll-about cart should be stable in its mounting to the cart.
   TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in                 Caution the customer on the hazards of trying to roll a cart with small
   the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by                  casters across thresholds or deep pile carpets.
   a .15 mfd 150V AC type capacitor between a known good earth ground                   7.    Caution customers against using a cart or stand that has not been listed
   water pipe, conduit, etc.) and the exposed metallic parts, one at a time.                  by Underwriters Laboratories, Inc. for use with its specific model of
   Measure the AC voltage across the combination of 1500 ohm resistor and                     television receiver or generically approved for use with TVs of the same or
   .15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor                    larger screen size.
   and repeat AC voltage measurements for each exposed metallic part. Voltage
                                                                                        8.    Caution customers against using extension cords. Explain that a forest of
   measured must not exceed 0.75 volts RMS. This corresponds to 0.5 milliamp
                                                                                              extensions, sprouting from a single outlet, can lead to disastrous
   AC. Any value exceeding this limit constitutes a potential shock hazard and
                                                                                              consequences to home and family.
   must be corrected immediately.



VR166 - 923-03461                                                                   2                                                                DVD2 - SAFETY
                                                        TABLE OF CONTENTS

OVERVIEW ........................................................ 5
   FEATURES ..................................................... 5
   SPECIFICATIONS ............................................. 5
   OUTPUTS ...................................................... 5
   PACKAGE CONTENTS ......................................... 6
   SERVICING PRECAUTIONS ................................. 7
   GENERAL SERVICING PRECAUTIONS .................... 7
   INSULATION CHECKING PROCEDURE .................... 7
   ELECTROSTATICALLY SENSITIVE (ES) DEVICES ....... 7
DISASSEMBLY .................................................... 8
MECHANISM .................................................... 10
ELECTRICAL ..................................................... 14
   BLOCK DIAGRAMS ......................................... 14
   TROUBLESHOOTING ....................................... 18
PARTS ............................................................ 28
DIAGRAMS ...................................................... 37
   DVD5201/5591 EXPLODED VIEW ..................... 37
SCHEMATICS .................................................... 38
   DVD5201/5591 POWER SUPPLY CIRCUIT .......... 38
   DVD5201/5591 DVD AND DSP CIRCUIT ............ 39
   DVD5201/5591 DRIVE AND RF CIRCUIT ........... 40
   DVD5201/5591 MICRO CIRCUIT ...................... 41
   DVD5201/5591 MEMORY CIRCUIT ................... 42
   DVD5201/5591 TIMER CIRCUIT ...................... 43
   DVD5201 AUDIO/VIDEO CIRCUIT ..................... 44
   DVD5591 AUDIO/VIDEO CIRCUIT ..................... 45
   DVD5201 JACK CIRCUIT ................................ 46
   DVD5591 JACK CIRCUIT ................................ 47
   DVD5201/5591 MAIN PCB LAYOUT .................. 48
   DVD5201/5591 PCB LAYOUTS ......................... 49




VR166 - 923-03461                                                       3   DVD2 - TOC
OVERVIEW
                                                          OVERVIEW

                                                            FEATURES
                                            



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