1-2
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 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 PROTECTION FROM A.C. LINE SHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. 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
PROTRUDING 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 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 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. 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. 150.V A.C TYPE CAPACITOR
BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, 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 MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE 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 PERSONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE 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. 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 C.R.T. ANODE CONNECTORS MUST BE
USED. DEGAUSSING SHIELDS ALSO SERVE AS AN 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 CALIBRATION 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 ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE AND THAT THE HIGH VOLTAGE READING BE RECORDED 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 IT IS NECESSARY TO LOCATE THE CAUSE OF EXCESSIVE 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 INTEGRAL 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, 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 A FACTOR, ETC.
3. AVOID PLACEMENT 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 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 HAZARDS 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 SINGLE 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
1-3
SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this service
data and its supplements and ADDENDUMS, 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.
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 resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1Mohm.
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 handling 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
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 electricity sufficient to damage an ES device.)
2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS .....................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2
2. Deck Mechanism Section........................................................................................................2-3
3. Packing Accessory Section....................................................................................................2-5
2-2
EXPLODED VIEWS
1. Cabinet and Main Frame Section
465
465
250
462
462
300
DIG901
465
261
260
275
463
463
465
463
463
463
A00
A43
A42
A47
A46
A48
A49
283
280
452
452
A
5
4
3
2
1
BCD
2-3
2. Deck Mechanism Section
016
012
012
014
014
009
011
008
432
430
430
430
430
031
001
003
004
026
025
002
414
415
415
413
413
413
414
414
416
032
034
033
035
416
416
416
416
037
030
022
023
021
020
036
A03
A01
A02
A04
038
416
005
005
024
039
039
463
040
040
463
008B
008A
038A
A
5
4
3
2
1
BCD
2-5
3. Packing Accessory Section
BATTERY
808
PACKING SHEET
804
PACKING
803
811
812
OWNER'S MANUAL
PLUG ASS'Y 1WAY(YELLOW)
PLUG ASS'Y 2WAY
810
CABLE SET ASS'Y
801
REMOCON
900
BOX CARTON
802
820
PLUG ASS'Y 1WAY(BLACK)
PACKING
803
806
RF CABLE
3-1
SECTION 3
ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-2
1. Power(SMPS) Circuit ...............................................................................................................3-2
2. µ-com Circuit............................................................................................................................3-3
3. MPEG Circuit............................................................................................................................3-6
4. Front Circuit(Digitron & Key) ................................................................................................3-7
5. RF/Servo Circuit ......................................................................................................................3-8
BLOCK DIAGRAMS ..................................................................................................................3-12
1. Overall Block Diagram ..........................................................................................................3-12
2. Power (SMPS) Block Diagram ..............................................................................................3-13
3. RF/CD DSP/DVD DSP/DVD servo Block Diagram ..............................................................3-14
4. Audio Block Diagram ............................................................................................................3-15
5. MPEG Block Diagram...........................................................................................................3-16
CIRCUIT DIAGRAMS................................................................................................................3-17
1. Power (SMPS) Circuit Diagram ............................................................................................3-17
2. DVD DSP Circuit Diagram.....................................................................................................3-19
3. Drive & RF Circuit Diagram ..................................................................................................3-21
4. MPEG Circuit Diagram ..........................................................................................................3-23
• WAVEFORMS ...........................................................................................................................3-25
5. Audio DM & 5.1CH Circuit Diagram .....................................................................................3-27
6. TIMER & Key Circuit Diagram ..............................................................................................3-29
7. A/V Circuit Diagram ...............................................................................................................3-31
8. A/V Jack Circuit Diagram......................................................................................................3-33
• CIRCUIT VOLTAGE CHART.........................................................................................................3-35
PRINTED CIRCUIT DIAGRAMS ............................................................................................3-39
1. MAIN P.C.BOARD (TOP VIEW)..............................................................................................3-39
2. MAIN P.C.BOARD (BOTTOM VIEW)......................................................................................3-41
3. SMPS P.C.BOARD..................................................................................................................3-43
4. TIMER P.C.BOARD.................................................................................................................3-44
5. KEY P.C.BOARD.....................................................................................................................3-43
3-2
ELECTRICAL TROUBLESHOOTING GUIDE
No 5V_D
or 5V_A .
No 5.2VA.
Is 5.2VA section working?
(Is the POWER CTL at
Pin6 High/low?)
Is oscillation present at the
Base of Q108?
Replace Q108.
Check D109, C123, R125,
R124.
Replace R102.
Replace BD101.
(Bridge rectifier)
Is R102(R104) normal?
Is about AC 100V applied to
IC101 Pin 3.
Check IC101.
Is 5.2V applied to IC102
Pin 1?
Is there a DC voltage at the
(+) terminal of BD101?
Check R127, 128.
(SHUTDOWN CKT)
1. Power(SMPS) Circuit
No FLD
Is 5.2VA section working?
Replace SMPS trans(T101).
Replace the inferior
components.
Are D109, L103 open?
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
A. B.
NO
NO
3-3
Replace Main B/D
Refer to Front Part
Replace IC503
Reconnect it.
2. µ-COM Circuit
A. No Power
Does Logo appear
on the screen?
Is oscillation of
X501 normal?
Are IC501 Pins 193, 808
and 81 normal?
Do “Hello” appear at FLD?
Is P3901
connected normally?
Is P3901 Pin 7, 8, 9 normal?
The waveform
on 3, 5, 7 pin of IC503
normal?
Check the oscillation
Check short.
OK
Replace IC501
or IC3F1.
Check power.
(Refer to power)
If power is
normal
OK
POWER ON
1
1
YES
YES
YES
NO
YES
YES
YES
A
NO
NO
NO
NO
NO
NONO
YES
A
3-4
B. Audio abnormal
D. Open/Close abnormal
Check the
connection of P3901.
Check IC301 Pins 3, 4.
Check Audio jack.
YES (If OK)
YES
NO
NO
YES
YES (If OK)
YES
YES (If OK)
YES (If OK)
YES (If OK)
Refer to Audio part.
Refer to Decoder part.
Refer to PANTERA part.
Replace B/D.
Check Front.
Reconnect it.
Refer to SERVO part.
Check the connection of MD.
AUDIO ABNORMAL
OPEN/CLOSE ABNORMAL
C. Video abnormal
Check Video jack.
YES (If OK)
YES (If OK)
YES (If OK)
Refer to Video part.
Refer to PANTERA part.
Replace B/D.
VIDEO ABNORMAL
3-5
E. Picture abnormal
Check the disc.
If OK
YES (If OK)
YES (If OK)
Refer to Servo part
Check DSP
Check PANTERA
Replace B/D
PICTURE ABNORMAL
F. Disc Error
Check Disc
YES (If OK)
YES (If OK)
Refer to Servo part
Replace B/D
DISC ERROR
3-6
Power is on
Does Logo appear
on the screen?
Does the
moving picture of the DVD Disc
play on the screen
normally?
Is PANTERA
data signal normal?
Is error signal normal?
Is PANTERA data
signal normal?
Is Clock normal?
Does the audio
sound output from PANTERA
decoder?
Does the
moving picture of the video
CD play on the screen
normally?
Does the audio sound
output normally?
END
Check power & clock.
Check CD/DVD DSP output
signal.
Check CD/DVD DSP output
signal.
Check CD/DVD DSP output
signal.
Check clock signal
Check clock signal
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
OK
NO
NO
NO
NO
NO
3. PANTERA Circuit
_ OPTION
_ If included VCD function.
3-7
NO
NO
NO
START
Does remote control
work normally?
Do all the
buttons work
normally?
Check waveform of
IC901 Pin 14, 15.
Check waveform
of IC901 Pin 18, 19.
Is Digitron on normally?
LED ON?
Check waveform
of IC901 Pin 7.
Is oscillation of
X901 normal?
Is waveform of IC901
Pin 20 normal?
Check waveform
of IC901 Pin 15.
Does pulse
waveform of RC901 Pin 1
appear?
Is IC901
Pin 28 connected to
RC901 Pin 1 ?
Is RC901 Pin 2 5V?
Power on.
Check and replace
R926, R925.
Solder defective parts again.
Solder defective parts
Replace IC901.
Solder Key part.
Check Power.
Replace IC902.
Replace IC901.
Replace LED901.
Replace RC901.
Re-solder.
Recheck
Replace IC901.Complete repairing Front B/D.
NO
NO
NO
NO
NO
NONONO
NO
YES
YES YES
YES
YES YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
CD
4. Front Circuit (Digitron & key)
3-8
Does signal pulse
input to IC201 Pins 53, 54 when
the powe is on?
Does signal goes
"High" to IC201 Pin186 when the
power is on?
Does
33.8688MHz clock input
to IC201 Pin 63?
Replace IC201
(IC206 soldering or IC defect).
Check "2.PANTERA Part".
Replace X201 or IC206
(30MHz clock defect)
CHECK POINT(General)
5. RF/Servo Circuit
A.
NO
NO
NO
YES
YES
YES
3-9
Does tray open or close?
Does the pick-up
slide inner or outer
track?
Fig.1. SLED Driver waveform
Fig.2. Focus Driver waveform
Does
the voltage change
at PMD04 Pins 1, 2 more than
2V on the basis of
3.8V?
Pressing
the open/close key
repeatedly, check the voltage of IC2M1
Pins 13, 14 change
0V to 5V
Does
PMD03 Pin 6 change
high to low?
Does
the pick-up lens move up
and down?
Check Focus Driver output.
(IC201 Pin 88, IC2M1 Pins 37, 38)
Check SLED Driver output.
IC201 Pin 80 IC2M1 Pins 28, 29.
IC201 Pin 80 no output : IC201 is defective
IC2M1 Pins 28, 29 no output : IC2M1 is defective
IC201 Pin 88 no output : IC201 is defective
IC2M1 Pins 37,38 no output : IC2M1 is defective
DECK assembly is defective.
Slide the pick-up to
inner track.
.Power on
Check loading Part.
Push Pick-up to inner track to
the end by hand.
DECK assembly is defective.
(Limit sw)
check PANTERA Part.
Replace IC2M1.
No disc
B.
END
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
3-10
FOCUS ON?
Check
the focus error moving the
lens up and down.
(IC2A1 Pin 39)
Does the
TTL level change at IC201
Pin 121 and 152 moving
the lens?
Does the disc turn?
IC201 Pin105 is "High"?
Is OK the track jump.
Does the signal
pulse appear at IC2A1 Pins
29?
Does the screen appear?
OPEN/CLOSE
Replace IC501 or IC201.
Replace IC201.
Check IC2A1 Pin 47,50,51,52
in DVD Mode
Fig.3. FOCUS ERROR waveform
IC201 no output : Pick-up is defective.
Check IC201 and IC2M1 when PMD03 Pin 5 is abnormal
Check IC2M1 Pin 21, PMD03
Pin 5 turn when the IC2M1
Pin 21 is less than 2.2V.
Check A
Video Part is defective.
Check "PANTERA Circuit."
Check "7.OSD/Video Circuit."
Replace PANTERA part.
IC2A1 is defective.
DISC IN
C.
END
NO
NO
NO
NO NO
NO
NO
NO
YES
YES
YES
YES
YES
YES YES
YES
3-11
See the eye-pattern vivid?
Does the
sawtooth waveform emit
at IC2A1 Pin 36?
Does the 1.6V emit?
Check RF Eye-Pattern.
RF : 1.5-1.6V(Q2A6 collector)
Fig.5. RF
waveform
Check IC2A1 Pins 47, 50, 51, 52.
No signal: Pick-up is defective
Replace IC201.
Check IC201 Pin84.
No signal at IC201 : IC201 is defective
• Check IC201 Pin 105.
• Check the clock at the IC201 Pins 138.
• Both are normal : IC201 is defective
Replace IC2A1.
CHECK A
D.
END
NO
NO NO NO
YES
YES YES YES
3-12
BLOCK DIAGRAMS
1. Overall Block Diagram
M
M
DISC
SPINDLE
MOTOR
LOADING
MOTOR
DECK M ECHANISM
CD: A,B, E, F
DVD: A,B,C,D,
DVD; RF
CD: A,B, E, F
DVD: A,B,C,D,
DVD; RF
PICK
UP
IC203
DRAM
16bit
16M
IC201
HDC25D811B
DSP II
IC501
PANTERA
IC901
GMS812012
FL DISPLAY
KEY Input
REMOCON
RECEIVER
6MHz
X-TAL
Pb
IC301
CPLD
I/O PORT 72
IC305
SDRAM
64M
IC305
EEPROM
IC2M1
KA3031
MOTOR
DRIVER
IC2A1
HD153702TF
RF
ICDATA
[00:15]
ICADD
[0:8]
LOADING
FOCUS,TRA CK IN G,SLED
SPI ND L E
MI RR,TZC,PI ,TE
FE,DFECT_ IN
RFO
SCLK,SDATA
SCOR,SQCK,SQSO
XLAT,E_STI ,E_ENB,E_DR
RF_XLAT , LDON
IC401
CS4391
2DAC
XIO1,XIO2
,XIO10
F_CLK
F_OUT
PCMCLK
SPINDLE_FG
MSDATO
MDP1
FOK
DEFECT
DSP_SENSE
LOCK
E_SOUT
ZISENB
/XRST
DA C_RST
16
:9,PAL_SW ,AUTO_SW ,MIC_ON
Y_SEL
/A_MUTE
/DAC_CS1
/DAC_CS2
V_MUTE
DAC_CLK
DAC_OUT
ADCCLK
ACT_MUTE , LOAD_OPEN , LOAD_CLOSE
MIRR
AD[00:19]
PSEN B
FLD
/FLD_CS
FLD_CLK
FLD_OUT
/FLD_CS
COMM_CLK
COMM_OUT
CPLD
EE_CS , EE_CLK , EE _OUT
F_IN
IC306
FLASH
ROM
F_IN
/MRESET
/FLASH_CS , /RDPWE O
LA0
LA1
LA2
LA3
AD[04:19]
MD[00:31]
MCLK2
CKE
MA[00:10]
MA12,13
/CS0
/RAS
/CAS
/WE
DQM0`3
REQP
SDCLKI , PSYNC
DVD[1:7]
DSP_INT
SENSE
/DSP_CS
LRCK
DAC-CS
AOUT3
L
Composi te
FILTER
Y
Pr
SW602
Video SW
CVBS/Pr/R , C/Pb/, Y/G
Y
C
L/R
-VF
AC 120V,
60Hz
POWER
BOARD
-VF
-27VA
+8V
+5.2VA
+5V_D
+5V_A
+12V_A
+3.3V_M
AD[0:7]
LADD4~5 , LA0~3
AD[00:15]
MDP,FDO,TDO,FMO,MON
OPEN_SW
CLOSE_SW
LIMIT_SW
CPLD
SBA D D ,
27MHz
X-TAL
33.8688MHz
X-TAL
+3.3V
+3.3V_MI
POWER_CTL
/SRST
R
AMP
3-13
2. Power(SMPS) Block Diagram
5V_D
5V_A
-27VA
VF+
RECTIFI ER
LINE FILTER
SWITCHING TR
TRANS
FEED B.
REG(8V)
8V
5.2VA
VF-
RECTIFIER(FLD)
RECTIFIER(9V)
RECTIFIER(5.2V)
LPF
LPF
RECTIFIER(14V)
LPF
12V_A
AC120V
PWR ON/OFF
REG(3.3V)
REG(3.3V)
3.3V_MI, 3.3V
3.3V,3.3V_M
RECTIFIER(3.8V) LPF
REG
(12V)
3-14
88
SENS, FOK, SLD_FG,
MSDAT0, DEFECT,DSP_SENSE
IC2M1
KA3031
SpindleMotor,LoadingMotor ,
Actuator Driver
CD: A,B,C,D / E, F
44
44
MIRR,TZC
88
55
33
33
SQSO, SQCK,
SCOR
SCOR
66
XLAT, S_CLK, S_DATA
UCOM
I/F
focus, tracking, loading, sled
Spindle
M/D
PICK
UP
MCK
IC201
HDC25D811B
CD / DVD DSP
DVD SERVO
IC2A1
HD153702TF
RF Signal
Processor
FDO,TDO,FMO
Load open/close(loading control)
UCOM
I/F
DVD: A,B,C,D,
FE,TE,PI,SBADD
44
DVD/CD RF
IC203
SDRAM
16
9
ICADDR[0:8]
ICDATA[00:15]
DO[0:7]
AO[0:5]
DVD_DATA[0:7]
MON,MDP
SPINDLE_FG
MPEG
I/F
22
DSP_CS, /WR, /RD33
88
3. RF/CD DSP/DVD DSP/DVD SERVO Block Diagram
3-15
4. Audio Block Diagram
IC401
CS4391
Audio DAC
IC402
LPF & Buffer
NJM4580D
OP AMP
L
R
U-COM
I/F
A_0WT3
/SRST
DAC
COMM_DATA
COMM_CLK
DAC_CS
LRCK
DA_BCK
DA_XCK
L
R
MPEG
I/F
3-16
5. MPEG Block Diagram
IC501
PANTERA
IC301
CPLD
I/O PORT 72
IC305
SDRAM
64M
IC502
EEPROM
IC3F1
FLASH
MEMORY
AD[0:7] 8
DSP
I/F
DVD[0:7]
8
LA[0:3]
4
SCLK,SDATA
SQCK,SQS0
REQP
SDCLK1,PSYNC
DSP_INT
SENSE
/DSP_CS
AD[00:19]
RF &
MOTOR
I/F
MIRR
LDON
S
C
L
K
,
S
D
A
T
A
EE_CS
F_IN
32
MD[00:31]
MCLK2
CKE
MA[00:10]
MA12,13
/CS0
/RAS/
/CAS
/WE
/DQM[0:3]
SPINDLE_FG
LA[0:3]
4
AD[00:15]
16
AUDIO
I/F
DA_DATA
DA_BCK,DA_LRCK,DA_XCK
DAC_L0,DAC_L1
DAC_RST
A/V
JACK
I/F
C/R(B)
CVBS/G(R)
Y/B(G)
CVBS
V_MUTE,16:9
ZISENB
/RD
/PWED
3-17 3-18
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
CIRCUIT DIAGRAM
1. POWER(SMPS) CIRCUIT DIAGRAM
NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
Oscillation abnormal
Digitron no Power
3.3V line dead.
No Power
8V line dead
5V_A/5V_D, No Power
No Power
3-19 3-20
5 6
Spindle Servo Loop
RF SIGNAL
Focus Servo Loop
Tracking Servo Loop
Sled Servo Loop
WAVEFORM
2. DVD DSP CIRCUIT DIAGRAM
DVD/CD picture
audio abnormal
µ-com
Interface adress
CD/DVD picture
audio abnormal
Focus Servo
fail
Tracking
Servo fail
Scratched
Disc abnormal
Sled Servo fail
DRAM Control
Disc Detect
Error
Spindle Servo fail
3-21 3-22
3. DRIVE & RF CIRCUIT DIAGRAM
4
1
6
2
3
21
18
20
19
18
19
20
21
WAVEFORM
Spindle Servo Loop
Turn Table Loop
Focus Servo Loop
Tracking Servo Loop
Sled Servo Loop
Turntable
not operate
DVD laser
not operate
CD laser
not operate
Tray Loading
Speed control
Turn table
speed control
Actuator spindle
sled not operate
Tracking Servo fail
Servo fail
Focus
Servo fail
3-23 3-24
10
7
9
13
8
11
12
WAVEFORM
OPTICAL/COAXITAL OUT
Y/Pb/Pr(Component)
Y.c(S-VHS)
Audio L/R OUT
CVBS
4. PANTERA CIRCUIT DIAGRAM
No Power on
No Power 1.8V
Audiuo DAC Interface
System not operate
System not working or
Digitron not display.
Not memoried setup
menu
3-25 3-26
• WAVEFORMS
IC2A1 Pin 42, Focus Error IC2A1 Pin 41
Tracking Error
IC501 Pin 114
Component Y
IC2A1 Pin 41
VBR TRACKING Error
IC2A1 Pin 57,
RF
IC201 Pin 88, SLED Drive(FMO)
IC2A1 Pin42, Focus Error(in Focus Search)
IC201 Pin 83, Focus Drive(FDO)
IC501 Pin 118, Composite IC501 Pin 112, Chrominance
(Super video out Mode)
Tek
Stop :
2.50MS/s
4 Acqs
M20.0µs
2 Apr 1999
14:47:27
Glitch
Ch1
Ch3
500mV
[T ]
T
3
IC501 Pin 114, Luminance
(Super video out Mode)
Tek
Stop :
1 00kS/s
3290 Acqs
M 500µs
CH1
280/mV
Edge Slope
Type
<Edge>
Source
Ch1
Coupling
DC
Level
280mV
Mode
&
Holdoff
3
Ch3
1.00V
[ T ][ T ]
Slope
T
IC501 Pin 99,
PANTER MAIN
IC501 Pin 112
Component Pb
IC501 Pin 110
Component Pr
TURN(+)(-) from Motor Drive
Reverse turn, IC301 6, 8
Sensor 1 (disc position)
Sensor 2 (disc ready),
IC301 78,89
TURN(+)(-) Signal from µ-com
TE/TZC After tracking
servo ON (Play mode),
IC2A1 36, IC2A4 7
TURN(+)(-) from Motor Drive
Forward turn
TE/TZC Before tracking
servo ON
TZC/MIRR (Search mode)
IC2A4 7, IC2A1 27
TE/SLD(+) Search mode
(outter
& inner),
IC2A1 36, IC2M1 28
3-27 3-28
5. MEMORY CIRCUIT DIAGRAM
17
17
16
16
WAVEFORM
Program download fail
Not memoried
setup Menu
“No Disc” display
Tray not open/close
Tray not closed
Digitron all not display and
system not operate
Turntable
not operating
Pick-up not initial
operating
Disc number
detect error
3-29 3-30
6. TIMER & KEY CIRCUIT DIAGRAM
System not
operate
System not
operate
Remocon
not operate
3-31 3-32
7. A/V CIRCUIT DIAGRAM
3-33 3-34
8. JACK CIRCUIT DIAGRAM
3-35 3-36
LEVEL(V)
MODE
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
3.18
1.3
1.4
1.8
1.5
0
1.5
1.4
1.6
3.1
0.7
0.15
0.15
0
0
1.7
1.4
0
1.5
1.6
0
1.6
0
3.1
1.7
1.4
3.1
1.5
0.15
0
0.7
1.5
1.8
2
3.1
2.9
2.2
2.9
0
0
0
1.6
3.1
1.6
1.5
0
1.4
0
1.5
1.7
1.2
3.1
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
1.6
1.4
1.5
0
1.6
1.4
1.5
1.4
3.1
1
1.5
0.005
0.5
0.003
1.58
0
3.1
1.2
1.2
1.2
1.2
3.1
1.65
1.8
1.5
1.5
3.1
3.1
0.001
3.1
3.7
0
3.1
3.1
1.8
0.004
3.1
0
0
0
1.8
3.1
0
0
0
0
2.1
2.1
LEVEL(V)
MODE
PIN NO.
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
0
0.8
0.9
1.3
3.1
0.78
0
1.26
0.08
1.2
2
0
3.1
3.1
3.1
3.1
0
1.8
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
0
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
1.8
1.5
3.1
0
LEVEL(V)
MODE
PIN NO.
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
3.1
3.1
3.1
3.1
3.1
3.1
3.1
0
3.1
3.1
3.1
1.5
3.1
0
3.1
3.1
3.1
3.1
3.18
0.086
3
2.4
2.3
0
0
3.1
0
0.017
1.8
3.1
3.1
0
3.18
1.3
3.1
3.1
3.1
0
2.3
3.1
0.001
3.1
3.1
3.1
1.6
3.1
3.18
0.018
1.8
3.19
2.69
1.5
2.9
2.59
0
LEVEL(V)
MODE
PIN NO.
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
2.29
2.08
2.29
2.29
2.49
3.1
2.39
2.45
1.5
0
1.52
0
1.61
1.6
3.1
1.6
1.6
1.5
0
1.6
1.4
1.5
LEVEL(V)
MODE
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
4.4
0
0
0
3.2
0
0
0
0
0
0
3.2
3.2
0
0
0
0
0
0
0
0
0
0
0
0
3.2
0
0
0
0
0
0
0
2.2
0
0
0
3.2
0
0
0
0
2.2
0
3.2
2.4
3.2
2.3
0
0
3.2
1.7
3.1
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
0
0
0
3.2
0
0
0
0
0
0
0
0
0
0
3.2
0
3.2
3.2
0
0
3.2
0
1.5
0
4.4
0
0
0
3.2
0
0
3.2
0
4.4
3.2
2.6
3.2
3.2
3.2
3.2
0
3
0
3.2
3.2
4.7
0
PANTERA MEMORY
IC301IC501
LEVEL(V)
MODE
PIN NO.
DSP
IC201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
3
3
3
3
3
3
3
3
0
3.08~3.1
2.97~3.1
3~3.1
3~3.1
3~3.1
3~3.1
3~3.1
3~3.1
3.24
0.2~0.3
0.3
0.41~1
0.41~1
0.41~1
3.24
0.4~1
0.4~1
0.4~1
0.4~1
0.4~1
0.4~1
0
3~3.1
3~3.1
3~3.1
3~3.1
0
1.597
0
0
12.3mV
3.24
3.24
3.24
0.5~1.6
0.5~1.6
0.5~1.6
0.15~1
0
3.2
0
0.3~1
0.2~1
0
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
5.19
0
0
0
1.698
1.97
0
3.24
0
3.24
0
0
0
0
3.24
0
3.25
0
3.24
0
0
0.8
2mV~1.459
0.795
0.795
2.17
2.13
3.27
0
1.99
2.19
0
0
1.989
2.08
1.987
1.645
0.834
2.43
1.628
1.648
2.42
1.636
1.649
0
0
1.649
3.28
3.27
2.05
2.07
1.2~1.39
3.23
0
3.24
LEVEL(V)
MODE
PIN NO.
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
3.24
0
0
0
0
0
0
0
0
0
0
3.23
1.59~1.63
3.23
3.23
0
3.24
3.23
0
0
3.28
3.28
3.28
0
0
3.24
3.24
0
1.699
1.906
0
0
0
3.23
2.48~2.17
0
0
0
0
0
172mV
2.47~2.56
0
3.23
0
1.58~1.62
0
3.23
3.23
0
0
0
2.72
3.27
3.27
• CIRCUIT VOLTAGE CHART
3-37 3-38
LEVEL(V)
MODE
PIN NO.
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
2.08
2.15
2.16
1.636
0
2.04
0
0
3.15
3.25
3.26
3.25
0
3.24
3.24
2.27~1.97
0.22~0.18
1~1.3
0
0
0
0
3.26
1.3~1.27
3.25
1.58
1.53
1.52
0
0.52
1.5~1.6
0.63~0.68
2.7~2.8
2.7~2.8
185mV~1V
2.4~2.9
17mV~1V
17mV~1V
17mV~1V
17mV~1V
17mV~1V
2.8
1.618
3.23
3.23
LEVEL(V)
MODE
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
3.1V
2.5~3.7
2
3.4
2.5
NC
NC
1.2V
2.78V
3.0~3.6
3.0~3.6
2.7V
1.9V
5.18V
5.18V
0~3.8V
0V~4V
3.3V
5.2V
0
0V
5.18V
2.2V~3.5
2.2V
3.4~3.8V
2.2~2.6
0V
5V
0.4V
4V
2.4V
2.4V
2.4~2.6V
2.4V~2.6V
2.4V~2.6V
2.4V~2.6V
2.4V
LEVEL(V)
MODE
PIN NO.
54
55
56
57
58
59
60
61
62
63
64
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
0V
0V
5V
0V
2.16
2.22
2.16
2.16
2.16
2.15
0
2.58
2.16
2.16
2.22
2.23
2.25
0
0
2.25
0
0
0
0
0
0
8
3.73
3.73
3.73
3.73
3.82
3.61
0
0
4.68
2.78
0
3.7
3.75
3.84
3.6
8.01
1.94
0~1.94
1.94
0
LEVEL(V)
MODE
PIN NO.
DEIVE&RF
IC2A1
IC2M1
44
45
46
47
48
8.01
2.16
0
7.96
2.1
3-39 3-40
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD (TOP VIEW)
LOCATION GUIDE
3-41 3-42
2. MAIN P.C.BOARD (BOTTOM VIEW)
LOCATION GUIDE
3-43 3-44
LOCATION GUIDE
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
3. SMPS P.C.BOARD
LOCATION GUIDE
5. KEY P.C.BOARD
LOCATION GUIDE
4. TIMER P.C.BOARD
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