LG GoldStar DVD5185 User manual

DVD VIDEO PLAYER
SERVICE MANUAL
MODEL : DVD5185(DV7311E4L)
MODEL : DVD5185(DV7311E4L)
SERVICE MANUAL
P/NO : 3829RHP012L JANUARY, 2003
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.

CONTENTS
SECTION 1 . . . .SUMMARY
SECTION 2 . . . .CABINET & MAIN CHASSIS
SECTION 3 . . . .ELECTRICAL
SECTION 4 . . . .REPLACEMENT PARTS LIST

SECTION 1
SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ............ 1-3
SERVICING PRECAUTIONS .................................................................................................. 1-4
• General Servicing Precautions
• Insulation Checking Prodedure
• Electrostatically Sensitive Devices
SPECIFICATIONS ...................................................................................................................... 1-5

1-3
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY,
NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC-
TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY
VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY
RESULTING PROPERTY DAMAGE OR USER INJURY.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE
THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY
CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE,
INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE
USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTEC-
TION 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 COMPONENT 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 PER 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 PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION
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 AROUND
PROTRUNING METAL SURFACES MUST BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF
RESISTORS, CAPACITORS, ETC. MUST BE REPLACED WITH EXACT
FACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTS
OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIR-
CUIT MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C.
LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABI-
NET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HAN-
DLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE
WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE
ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLT-
METER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN
THE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESIS-
TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR
BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON-
DUIT, ETC.) AND THE EXPOSED 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 MEASURED MUST NOT EXCEED 75
VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY
VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK
HAZARD AND MUST BE CORRECTED IMMEDIATELY.
SUBJECT: GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN
AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE”THAT MAY BE OF SUFFICIENT MAG-
NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN-
GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO
THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN
SERVICE LITERATURE.
SUBJECT : X-RADIATION
1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER-
SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN-
TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC-
TURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN
THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE
PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA-
TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC-
TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR-
CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR-
ABLE LEVELS.
2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE
USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN
COLOR SETS, ALWAYS RE-INSTALL THEM.
3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN
ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA
TION OF THE METER SHOULD BE CHECKED PERIODICALLY
AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE
AT YOUR DISTRIBUTOR.
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, WE SUGGEST THAT YOU AND YOUR SERVICE ORGA-
NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU-
LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE-
DURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ON
EACH CUSTOMER’S INVOICE.
5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN
A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE,
AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND
THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT
LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCES
SIVE VOLTAGE.
6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS
(WHERE USED).
SUBJECT: IMPLOSION
1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE
GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE
TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID
SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT.
2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
SUBJECT : TIPS ON PROPER INSTALLATION
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY-
HOLE 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 RADIA-
TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.
3. AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR
VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC-
ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT
OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER-
CIAL 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
TEST ON CUSTOMIZED INSTALLATIONS.
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON
SLOPING SHELF OR A 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 HAZ-
ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS
THRESHOLDS OR DEEP PILE CARPETS.
7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND
WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES,
INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION
RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.’S OF
THE SAME OR LARGER SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS,
EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN-
GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO
HOME AND FAMILY.
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
A.C. VOLTMETER
GOOD EARTH GROUND
SUCH AS THE WATER
PIPE. CONDUIT. ETC
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

1-4
SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this service
data and its supplements and addends, read and follow the
SAFETY PRECAUTIONS. NOTE : if unforeseen circum-
stances create conflict between the following servicing pre-
cautions and any of the safety precautions in this publica-
tions, always follow the safety precautions.
Remembers 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 electricity.
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 grouned-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.)

1-5
SPECIFICATIONS
•GENERAL
Power requirements AC 110-240V , 50/60 Hz
Power consumption 14W
Dimensions (approx.) 430 X 55 X 242 mm (w x h x d)
Mass (approx.) 2.4 kg
Operating temperature 5˚C to 35˚C (41˚F to 95˚F)
Operating humidity 5 % to 90 %
•SYSTEM
Laser Semiconductor laser, wavelength 650 nm
Signal system PAL/NTSC
Frequency response DVD (PCM 96 kHz): 8 Hz to 44 kHz
DVD (PCM 48 kHz): 8 Hz to 22 kHz
CD: 8 Hz to 20 kHz
Signal-to-noise ratio More than 100dB (ANALOG OUT connectors only)
Harmonic distortion Less than 0.008%
Dynamic range More than 100 dB (DVD)
More than 95 dB (CD)
•OUTPUTS
VIDEO OUT 1 Vp-p 75 Ω, sync negative, RCA jack x 1 / SCART (TO TV)
Audio output (digital audio) 0.5 V (p-p), 75 Ω, RCA jack x 1
Audio output (analog audio) 2.0 Vrms (1 KHz, 0 dB), 330 Ω, RCA jack (L, R) x 1 /
SCART (TO TV)
•ACCESSORY
Video cable ................................................ 1
Audio cable ................................................ 1
Remote control........................................... 1
Batteries..................................................... 2
•Design and specifications are subject to change without notice.

2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
1. DISASSEMBLY.........................................................................................................................2-2
CABINET DISASSEMBLY ............................................................................................................2-2
CIRCUIT BOARD DISASSEMBLY ...............................................................................................2-3
2. EXPLODED VIEWS ................................................................................................................2-4
1. Cabinet and Main Frame Section ...........................................................................................2-4
2. Deck Mechanism Section........................................................................................................2-6
3. Packing Accessory Section....................................................................................................2-7

2-2
DISASSEMBLY
CAUTION BEFORE STARTING SERVICING
Electronic parts are susceptible to static electricity and may easily and 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 parts 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.
Top Case
(A)
(A)
(A)
(A)
(A)
Tray Door
Disc Tray
Fig. 2-3
Stopper
Stopper
Front Panel Stopper
CABINET DISASSEMBLY
1. Top Case
1. Release 5 screws (A). (See Fig. 2-1)
2. Lift the top case with holding the back of it,
and remove it in the direction of the arrow
Fig. 2-1
Fig. 2-2
Fig. 2-3
3. Front Panel
1. Eject the disc tray. (See Fig. 2-2)
2. Remove the tray door. (See Fig. 2-2)
3. Pull the front panel 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.

2-3
(B)
(B)
(B)
(B)
(B) (B)
(B)
(C)
(C)
Interface
Board
(B)
(B)
Main Circuit
Board
(C)
(C)
(D)
(D)
(D)
(D)
(D)
Key
Circuit Board
Fig. 2-4
Fig. 2-5
1. Disassembling of Main Circuit Board
and Interface Board
1. Remove the top case.(See Fig. 2-1)
2. Remove 13 screw (B).
3. Remove the Deck from Main Circuit Board.
4. Remove Main Circuit Board from Interface Board.
5. Remove 4 screw (C).
6. Remove Interface Board from the chassis.
CIRCUIT BOARD DISASSEMBLY
Note: Before removing the main circuit board, be sure to shortcircuit the laserdiode output land.
After replacing the main circuit board, open the land after inserting the flexible connector.
(Refer to Mechanism Disassembly)
2. Digitron and Key Circuit Board
1. Remove the front panel.(See Fig. 2-3)
2. Release 5 screws (D), and remove the digitron
circuit board.

2-4
EXPLODED VIEWS
1. Cabinet and Main Frame Section
A47
A00
A46
A48
A49
A43
A44
A42
260
280
261
261
283
452
452
463
320
465
463
463
463
463
463
250
463
467
465
A
5
4
3
2
1
BCD

2-5
2. Deck Mechanism Section
001
003
004 431
026
021 023
025
436
436
436
022
024A
024B
024A
435
022A
032
024
027
028
031
030
434
A02
A03
A01
A00
020
011A
010
015
015A
015B
015C
017
013
014
018
011
029
012
430
431
431
012
430
433
002
A
5
4
3
2
1
BCD

2-6
•Cabinet and Main Frame Section•Cabinet and Main Frame Section Part List
S AL LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS
ASSEMBLY PARTS SECTION
A42 6871R-5723A O PWB(PCB) ASSEMBLY,TOTAL DV7000S 3TOOL KEY SH
A43 3501RF2990A O BOARD ASSEMBLY DVD DV7311E4L HA3GLG +FRONT
A44 3141R-D003F O CHASSIS ASSEMBLY DV7510E LSI,MTK 55MM NSP
A46 6885R-1000L O SUB PWB(PCB) ASSEMBLY DV7311E4L HA3GLG LG, R2, ENG_S
A47 6871R-7604C O PWB(PCB) ASSEMBLY,TOTAL DV7000S SMPS SH 220V(CE)
A48 6871R-7601N O PWB(PCB) ASSEMBLY,TOTAL DV7000S LSI SCART SH
A49 6871R-5713A O PWB(PCB) ASSEMBLY,TOTAL DV7000S 3TOOL TIMER SH
PARTS SECTION
250 3110R-D001A O CASE DV7000 PRESS 430-55(A288G)
260 3140R-D002A O CHASSIS DV7000 PRESS MAIN
261 5040R-0069D O RUBBER FOOT(SILICONE SPONGE DS-08 T=
280 3721R-F327A O PANEL ASSEMBLY,FRONT[NORMAL PA DV7300 EVENT
283 3580R-T085A O DOOR,CASE DVD DV7000 MOLD VCD
300 6410RCHX02A O POWER CORD CE-503/JL201B JIULAN/CHAUS VD
320 3720R-D072F O PANEL,VIDEO DVD DV7510E PRESS LSI,MTK 55MM
SCREW
452 353-051A O SCREW SPECIAL
463 353-051G O SCREW,DRAWING + 2 D3.0 L8.0 MSWR3/FN TB ROUN
465 353-046K O SCREW SPECIAL (3X10 B.K)
467 353-046N O SCREW,DRAWING SPECIAL(3X8 BK.)
S AL LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS
ASSEMBLY PARTS SECTION
A00 6721RH0370A O DECK ASSEMBLY,VIDEO DP-7R(55MM) - SH NSP
A01 4861R-0016B O CLAMP ASSEMBLY DISC DP7 - SH
A02 3041R-M003B O BASE ASSEMBLY MAIN(DP-7R) - SH
A03 3041R-M002B O BASE ASSEMBLY SLED(DP-7RM, 2LD 502W DC W/O S
PARTS SECTION
001 3300R-0547A O PLATE CLAMP NSP
002 5016H-1016B O MAGNET CLAMP(LDM-R608,10*5,1*1.5T) NSP
003 4860R-0021A O CLAMP UPPER DP7 NSP
004 4930R-0365A O HOLDER CLAMP DP7
010 6850R-GF10B O CABLE,FLAT P=1.0 FFC UL2896(0.05X0.65) 6
011 3210R-M001A O FRAME UP/DOWN DP7 MOLD
011A 6850R-JW24Y O CABLE,FLAT P=1.0 FFC UL2896(0.035X0.7) 23
012 5040R-0075D O RUBBER DAMPER DP7 (YAMAUCHI 30)
013 4400H-1009A O BELT GM-RT1332A
014 4470R-0055A O GEAR PULLEY
015 6871R-9248B O PWB(PCB) ASSEMBLY,TOTAL DP7 LOADING - SH
015A 4681R-A003B O MOTOR ASSEMBLY LOADING DP7 - SH
015B 4560R-0008A O PULLEY MOTOR
015C 4680R-E007A O MOTOR(MECH) FEEDING BCZ3B01 SANKYO FOR DVD
017 4470R-0056A O GEAR LOADING
018 4974R-0046A O GUIDE UP/DOWN(DP-7)
020 3040R-M004A O BASE MAIN(DP7-55MM) MOLD
021 4680R-C010A O MOTOR(MECH) SPINDLE JCL9B78 SANKYO FOR DVD
022 4681R-B005B O MOTOR ASSEMBLY FEEDING DP7 - SH
022A 4680R-E008A O MOTOR(MECH) FEEDING RF-300EA-1D390 MABUCHI
023 4470R-0119A O GEAR FEED MOTOR
024 4470R-0124A O GEAR PINION DP7
024A 5006R-0040A O CAP SKEW (T) DP7
024B 5006R-0039A O CAP SKEW (R) DP7
025 4470R-0122A O GEAR MIDDLE A DP7
026 3390R-0015A O TRAY DISC DP7
027 4470R-0123A O GEAR MIDDLE B DP7
028 4370R-0083A O SHAFT DECK/MECHA DP7 OTHER PU-T
029 4370R-0075A O SHAFT PU
030 4471R-0010A O GEAR ASSEMBLY RACK DP7
031 6716DPH005A O PICK UP,DVD PVR-502W MITSUMI PLAYER H/HIGH
032 6871R-9243B O PWB(PCB) ASSEMBLY,TOTAL DP7 FEEDING - SH
SCREW
430 1SZZR-0046A O SCREW,DRAWING + 1 D2.0 L6.0 SWRCH16A/FZY
431 1SZZH-1007B O SCREW,DRAWING + D2.0 6MM SWRCH16A/ZNBK 4MM 1
433 1SZZR-0050A O SCREW,DRAWING + 1 D2.0 L4.5 SWRCH16A/ZNY S-T
434 1SZZR-0023B O SCREW,DRAWING + 1 D1.7 L6.0 SWRCH16A/FZY RAC
435 1SZZR-0011A O SCREW, MACHINE
436 1SZZR-0047A O SCREW,DRAWING + 1 D1.4 L4.5 SWRCH16A/FZY TAP
•Deck Mechanism Section Part List

3. Packing Accessory Section
BATTERY
808
PACKING SHEET
804
PACKING
OPTIONAL PARTS
803
806
820
OWNER'S MANUAL
RF CABLE
810 CABLE SET ASS'Y
801
REMOCON
900
BOX CARTON
802
PACKING
803
811
812
PLUG ASS'Y 1WAY(YELLOW)
PLUG ASS'Y 1WAY(BLACK)
PLUG ASS'Y 2WAY
2-7
•Packing Accessory Section Part List
S AL LOCA.NO PART NO(LG) A DESCRIPTION SPECIFICATION REMARKS
801 3835RS0050L O INSTRUCTION ASSEMBLY DVD DV7311E4L HA3GLG
802 3890R-H802W O BOX DV7311E4M HA3GLG SWW3-A 0.870
803 3920R-E066A O PACKING,CASING DV7000 0.02 68 EPS 10 1165 238
804 292-053B O BAG SOFT(MIDI) NSP
808 841-0021 O BATTERY,MN ER03X HI WATT 1.5V .MA/H AAA
810 6851RP0003N O CABLE ASSY,RF DVD CABLE ASSY,RCA USING AREA
811 6611R1G001A O PLUG ASSY 1WAY YELLOW GLOBAL
812 6611R2G001A O PLUG ASSY 2WAY RED/WHITE GLOBAL
900 6711R1P063C O REMOTE CONTROLLER ASSEMBLY N6 DV7311E4L HA3GLG NO BRAND

3-1
SECTION 3
ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS ....................................3-2
1. System Clock X501 (13.5Mhz) ................................................................................................3-2
2. Initializing between CPLD and Flash.....................................................................................3-3
3. Initializing between MPEG and SDRAM ................................................................................3-3
4. Initializing between MPEG and Flash ....................................................................................3-4
5. Reference Voltage 1.................................................................................................................3-4
6. Reference Voltage 2.................................................................................................................3-5
7. Checking the initial step of M/D Ass’y3-5
8. Checking the Video Signal......................................................................................................3-6
9. Checking the first step of servo (1)3-6
10. Checking the second step of servo (2) ...............................................................................3-7
11. Checking the output of Audio signal ...................................................................................3-7
12. Checking the reset port ........................................................................................................3-8
13. Checking the focus & tracking servo ..................................................................................3-8
14. Checking the track jump.......................................................................................................3-9
15. The status of CD_LD and DVD_LD when to play ...............................................................3-9
16. The status Focus and spindle motor.................................................................................3-10
17. DATA STREAM .....................................................................................................................3-10
18. Input Clock to IC201 ............................................................................................................3-11
19. Tray Open and Close ...........................................................................................................3-11
20. Focus Drive signal(FDO).....................................................................................................3-12
21. Signals for Front micom .....................................................................................................3-12
22. FDO and FE for DVD9 (Dual disc) ......................................................................................3-13
23. System clock of MPEG IC ...................................................................................................3-13
BLOCK DIAGRAMS ..................................................................................................................3-14
1. Overall Block Diagram ..........................................................................................................3-14
2. Power (SMPS) Block Diagram..............................................................................................3-15
3. Audio Block Diagram ............................................................................................................3-16
4. MPEG & MEMORY Block Diagram.......................................................................................3-17
5. Servo Interface and Block Diagram.....................................................................................3-18
6. KARAOKE Block Diagram (KARAOKE MODEL ONLY)......................................................3-19
CIRCUIT DIAGRAMS................................................................................................................3-20
1. Power (SMPS) Circuit Diagram ............................................................................................3-20
2. RF & SERVO Circuit Diagram...............................................................................................3-22
3. SYSTEM Circuit Diagram ......................................................................................................3-24
4. AUDIO & JACK Circuit Diagram...........................................................................................3-26
5. Timer/5.1CH Circuit Diagram ................................................................................................3-28
•CIRCUIT VOLTAGE CHART ....................................................................................................3-30
PRINTED CIRCUIT DIAGRAMS ............................................................................................3-34
1. MAIN P.C.BOARD ...................................................................................................................3-34
2. KEY P.C.BOARD.....................................................................................................................3-36
3. TIMER P.C.BOARD .................................................................................................................3-36
4. SCART & 5.1CH P.C.BOARD.................................................................................................3-38

3-2
ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS
1. System Clock X501 (13.5Mhz)
IC501
X501
MPEG
(ZIVA5.0)
NORMAL
1) MPEG IC start oscilating
after being installed VCC
ABNORMAL
1) Logo Picture doesn’t appear
2) Initial step fail
* Initial step : power cord in -> green LED ->
red LED -> power key input -> Logo picture
2. Initializing between CPLD and Flash
1.4 Vp-p
X501 : 13.5 Mhz X501 : there is distortion
IC501
MPEG
(ZIVA5.0)
IC502
CPLD
IC504
FLASH
AD0
~ AD15
(address
& data)
LADD4
~ LADD19
(address)
(data)
IC502 separate address from data & address
and control the address sector of IC504.
If LADD4 ~ 19 don’t appear on IC502,
Initial step will fail and NO Logo picture
on screen.
IC502 should be checked or be replaced…
AD0
LADD4

3-3
IC503
SDRAM
IC701
Front
U-com
X501
/M-RESET
MCLK
IC202
RF IC
R548
IC501
MPEG
(ZIVA5.0)
1) MPEG IC start oscilating(13.5Mhz)after being
installed VCC
2) MPEG IC and RF IC get the /M - RESET signal
from front U - com(IC701) and they are initial-
ized.
3) And then, MPEG IC generate MCLK and send
to SDRAM
4) MPEG IC and SDRAM are synchronized by
MCLK, they communicate between.
If oscilation(13.5Mhz) don’t appear, check
The X-TAL and VCC and replace MPEG IC.
If MCLK don’t appear, first cut the MCLK line
(remove R548) and recheck.
Don’t appear -> check MPEG IC or replace
Appear -> check the SDRAM or replace
/M-RESET X501
Reset TimePower
Cord in
X501
(13.5 Mhz)
MCLK
(135 Mhz)
IC504
Flash
ROM
IC701
Front
U-com
X501
(13.5Mhz)
/M-RESET
R/W
VCC
data
address
IC501
MPEG
(ZIVA5.0)
1) MPEG IC start oscilating(13.5Mhz) after being
installed VCC
2) MPEG IC is initialized by /M - RESE T
3) MPEG IC send the R/W(read/write) signal
before communicating with FLASH ROM
R/W signal should be confirmed by Flash or the
next step will not continue.
As that result, the initial step(power cord in ->
green LED -> red LED -> standby) will fail.
If R/W signal doesn’t appear, check the VCC and
replace the Flash ROM…
VCC
Power
Cord in
/M-RESET
R/W
3. Initializing between MPEG and SDRAM
4. Initializing between MPEG and Flash

3-4
VCC (3.3V)
VHALF (1.65V)
VREF2 (2.1V)
36 PIN
29 PIN
27 PIN
IC202
RF IC
(AN8703)
1) There are two kinds of reference voltage on RF
IC
2) These are outputed from RF IC and 1.65V is
used as reference of DSP IC 2.1V is used as
reference of Pick - up
If these reference voltage don’t appear, All kinds of
servo control will fail.
So, should be checked first of all Check the RF IC
and replace…
VCC
3.3V
1.65V
2.1V
Power
Cord in
VHALF
VREF2
Pick-Up
TDO
A/B/C/D
TE
Reference
2.1V
Reference
1.65V
Reference
1.65V
IC201
DSP
(MN103S)
IC203
Motor
Drive
IC202
RF IC
We can see how the reference voltage,
mentioned previous page, will work on servo
control..
1) The DC level of RF signal from P/up is 2.1V
2) The DC level of TE and TDO is 1.65V
3) Correct DC level of these signal make servo
work normally.
Even though, the reference voltage come out
correctly from RF IC,
If A/B/C/D are not biased by 2.1V, and checking
the P/up is needed.
If the DC level of TE is not 1.65V, check RF IC
and replace it…
In case of TDO, procedure is same
TE 1.65V
120mV
TDO
A/B/C/D
1.65V
2.1V
5. Reference Voltage 1
6. Reference Voltage 2

3-5
CLOSE
-SW
LIMIT
-SW
CN203 CN202
FM+
LD-CD
Q201
IC502
CPLD
M/D
ASSY
IC203
Motor
Drive
CN201
Let’s look over the initial action of M/D...
1) When the tray is closed, CLOSE-SW should
be changed from 5V to 0V and CPLD need to
detect this change
2) Feeding Motor move the P/up to inner area until
the LIMIT SW is detected
3) After CPLD detect the LIMIT SW, CD laser is
turned on and go to the next step
4) if there is a DISC on the tray, the RF will be
detected by the CD laser and go to next step..
Check the CLOSE-SW and LIMIT-SW
if anything of the both is not detected, the next
step won’t go on. This means that even though
there is a DISC on the tray the DISC will not
rotate.
FM+
CLOSE-SW
P/up move
to inner area
Limit sw
detect
CD LD on
Tray close
LIMIT-SW
LD-CD
Check the followings
1) Check the video output mode. if the output
mdoe is progressive - on, there is no compos-
ite signal.
the output mode should be changed to
progressive - off
2) Check the buffer IC and MPEG, and then
replace.
75 Ohm
Composite out
131 pin
IC513
Ziva5.0
(MPEG)
buffer
DC 0V 15.7 Khz
DC0.3V
31.3 Khz
Composite signal is normal --> Screen display OK Composite signal is abnormal -->there is no screen on TV
7. Checking the initial step of M/D Ass’y
8. Checking the Video Signal

3-6
47 82
IC502
CPLD
DSP-RST TSTSG
110
IC201
DSP IC
IC202
RF IC
Let’s look over the initial step of DSP
1) First. DSP IC receive the DSP - Reset from
CPLD
2) This reset signal get DSP initialized and DSP is
ready to do first step for servo
3) TSTSG from DSP is the test signal for checking
the PLL- loop
4) RF IC regard this test signal as RF signal which
is coming from P/up and send this signal to
DSP. DSP perform the procedure of PLL-loop
by using this signal.
5) after checking the PLL-loop, the second step is
followed. the second step will be explained on
next page…..
if TSTSG doesn’t appear, check DSP and
replace. if the unit doesn’t work normally, even
though the both signals are OK.Check the RF
IC and replace.
DSP-RST
Vcc(3.3V)
Reset period 720 Khz 4.3 Mhz
TSTSG
M/D
ASSY
LD-DVD
CN201
IC202
RF IC
Let’s look over the initial step of servo
1) when the tray is closed, first of all, it should be
checked whether there is disc or not on tray
2) CD laser is turn on and the lense is moved. if
there is a disc on tray, RF signal will appear
3) next, it should be confirmed which disc is that.
CD or DVD.
4) the following step will be done continuously CD -
Laser on -> move lense -> DVD - laser on ->
move lense. in according to disc type, there will
be RF signal…
5) after confirming disc, CD or DVD laser turn on
and focus servo is executed…
the below picture is related signals when DVD
disc is inserted
move lense
CD laser on DVD laser on
F+
CD/DVD
LD-CD
LD-DVD
1) ~ 2) 4) 5) 6)
9. Checking the first step of servo (1)
10. Checking the second step of servo (2)

3-7
DA_DATA
IC402
OP-
AMP
DA_XCK
DA_BCK
DA_LRCK
Analog
audio
IC501
MPEG
(ZIVA5.0)
IC401
DAC
IC401 is called as Audio DAC, DAC means Digital-
Analog Convertor.
This IC receives digital signal from MPEG and con-
vert digital signal to analog signal, so we can hear
sound…
IC401 is connected with OP - AMP and an analog
Audio signal is amplified at the OP - A MP.
because the analog audio signal from DAC is a
very low level.
DA_XCK : this is the system clock for IC401
DA_BCK : this is standard clock to synchronize the
audio serial data
DA_LRCK : R-chanel and L-chanel are selected
among the audio serial data by this
DA_DATA : serial audio data
DA_XCK
DA_BCK
DA_LRCK
DA_DATA
Pin 7 and pin 47 of IC20, pin202 of IC501 and pin 11 of IC202 are related to RESET.
We can know whether IC is intialized or not through those ports.
The waveform shows the status when the reset signal works normally.
If the /M-RESET is abnormal, then check the front u-com(IC901) and replace it
/M-RESET (Pin202 of IC501)
DSP_RST (Pin 47 of IC201)
/M-RESET (Pin 11 of IC202)
3.3V power input
The waveform when power on
11. Checking the output of Audio signal
12. Checking the reset port