Page 1
SERVICE MANUAL
Product Type: DVD VIDEO PLAYER
Chassis: DP9 (MD)
Manual Series: ZDA-311
Manual Part #: 3829RHN004T
Model Line: D
Product Year: 2005
Summary 1
Cabinet & Main Chassis 2
Electrical 3
Parts List 4
Model Series:
CONTENTS
ZDA-311
....................................................
.............................
....................................................
....................................................
Printed in U.S.A
Copyright © 2005 by Zenith Electronics Corporation
Published March 2005
by Technical Publications
Zenith Electronics Corporation
201 James Record Road
Huntsville, Alabama 35824-1513
Page 2
CONTENTS
SECTION 1 . . . .SUMMARY
SECTION 2 . . . .CABINET & MAIN CHASSIS
SECTION 3 . . . .ELECTRICAL
SECTION 4 . . . .REPLACEMENT PARTS LIST
Page 3
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
1-2
Page 4
1-3
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 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 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 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 ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE. 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, 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 PALCEMENT 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
Page 5
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 circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions.
Remembers Safety First:
General Servicing Precautions
1. Always unplug the DVD 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 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 electricity sufficient to damage an ES device.)
Page 6
1-5
SPECIFICATIONS
• GENERAL
Power requirements: AC 120 V , 60 Hz
Power consumption: 8W
Dimensions (Approx.): 360 x 35 x 242 mm (W x H x D) without foot
Weight (Approx.): 1.7 kg
Operating temperature: 5 °C to 35 °C (41 °F to 95 °F)
Operating humidity: 5 % to 90 %
• OUTPUTS
VIDEO OUT: 1 Vp-p 75 Ω, sync negative, RCA jack x 1
COMPONENT VIDEO OUT: (Y) 1.0 V (p-p), 75 Ω,negative sync, RCA jack x 1
(Pb)/(Pr) 0.7 V (p-p), 75 Ω, RCA jack x 2
AUDIO OUT: 2.0 Vrms (1 KHz, 0 dB), 600 Ω, RCA jack (L, R) x 1
DIGITAL OUT (COAXIAL): 0.5 V (p-p), 75 Ω, RCA jack x 1
• 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 100 dB (ANALOG OUT connectors only)
Harmonic distortion: Less than 0.02%
Dynamic range: More than 95 dB (DVD/CD)
Page 7
2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS .....................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2
2. Deck Mechanism Section(DP-9) .............................................................................................2-3
3. Packing Accessory Section ....................................................................................................2-4
Page 8
2-2
EXPLODED VIEWS
1. Cabinet and Main Frame Section
A
5
4
3
2
1
BCD
463
463
300
463
463
250
5.1CH Model
A46
ONLY
A48
463
467
465
320
A44
261
A00
A47
463
452
452
283
A49
280
A42
260
261
A43
Page 9
2. Deck Mechanism Section(DP-9)
2-3
026
012
A00
019
013
017
439
014
015
435
015B
015A
018
440
012
001
030
002
003
A01
A02
020
016
432
012A
A03
035
036
025
010
024
431
435
012A
021
430
035A
438
Page 10
2-4
3. Packing Accessory Section
BATTERY
808
AC ADAPTOR
823
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
Page 11
3-1
SECTION 3
ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-2
1. Power check flow.....................................................................................................................3-2
2. System operation flow ............................................................................................................3-3
3. Test & debug flow ....................................................................................................................3-4
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....................3-10
1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL. ....................................................3-10
2. SDRAM CLOCK ......................................................................................................................3-12
3. TRAY OPEN/CLOSE SIGNAL ................................................................................................3-12
4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-13
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-13
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) ............................3-14
7. DISC TYPE JUDGEMENT WAVEFORM ................................................................................3-14
8. FOCUS ON WAVEFORM........................................................................................................3-16
9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION ...................................................3-17
10. TRACKING CONTROL RELATED SIGNAL(System checking).........................................3-18
11. MT1389D AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF) ..........................................3-19
12. MT1389D VIDEO OUTPUT WAVEFORM .............................................................................3-19
13. AUDIO OUTPUT FROM AUDIO DAC ..................................................................................3-20
BLOCK DIAGRAMS ..................................................................................................................3-21
1. Overall Block Diagram ..........................................................................................................3-21
2. Power(SMPS) Block Diagram ...............................................................................................3-22
3. SERVO Block Diagram ..........................................................................................................3-23
4. MPEG & MEMORY Block Diagram .......................................................................................3-24
5. VIDEO & AUDIO Block Diagram ...........................................................................................3-25
CIRCUIT DIAGRAMS ................................................................................................................3-26
1. Power(SMPS) Circuit DIAGRAM...........................................................................................3-26
2. AV/JACK Circuit DIAGRAM...................................................................................................3-28
3. SYSTEM Circuit DIAGRAM ...................................................................................................3-30
4. DRIVER Circuit DIAGRAM.....................................................................................................3-32
5. TIMER Circuit DIAGRAM .......................................................................................................3-34
• CIRCUIT VOLTAGE CHART ....................................................................................................3-36
PRINTED CIRCUIT DIAGRAMS ............................................................................................3-38
1. MAIN P.C.BOARD ...................................................................................................................3-38
2. KEY P.C.BOARD .....................................................................................................................3-40
3. TIMER P.C.BOARD .................................................................................................................3-41
4. SMPS P.C.BOARD ..................................................................................................................3-42
Page 12
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power check flow
A. B.
No 5V
No 3.4VA.
Is 3.4VA section working?
YES
Is 5.6V present at collector
of Q126?
YES
Replace Q126.
NO
No 3.4VA
Check FR101
Is there a DC voltage at
Cathode of D105 or D107?
YES
Replace IC101.
NO
Is 3.4VA section working?
YES
NO
Is 3.4V present at emitter
of Q121?
YES
Replace Q121.
YES
NO
Check D105/D106/D107/
D108 and replace.
3-2
Page 13
3-3
2. System operation flow
NO
NO
NO
YES
YES
YES
YES
YES
Power On
1. 8032 initializes SERVO,DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
Tray Closed ?
Tray Close to Closed position
SLED at Inner Side ?
SLED Moves to Inner Position
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
Recieve OPEN/CLOSE Key?
1. Execute Pressed Key & IR Key
2. System operation Routine Loop
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
Receive CLOSE Key?
Page 14
3. Test & debug flow
TEST
Check the AC Voltage
Power PCBA(110V or 220V)
YES
Switch on the Power PCBA
YES
Are the DC Voltage outputs OK?
(5V, 3.3V, 12V, 5.6V MOTOR)
YES
Make sure the main PCBA don't short on
VCCs and switch it on.
YES
Are 3.3V and 1.8V DC outputs normal on
main PCBA?
NO
Replace power PCBA or AC transformer.
NO
Repair or Replace Power PCBA
NO
Check the regulators or related diodes.
YES
Connect to PC RS232 Cable and update
the FLASH memory code.
YES
Update FLASH successfully?
YES
A
NO
1. Check 27MHz system clock.
2. Check system reset circuit.
3. Check FLASH R/W enable signal
PRD,RWR.
4. Check RS232 SIGNALS.
5. Check FLASH Memory related circuit.
3-4
Page 15
3-5
A
Flash Memory operates
properly?
Show LOGO?
Does Tray move inside when
it is not at closed position?
B
NO
NO
YES YES
YES
YES
YES
YES
YES
YES
YES
Check connection lines between
FLASH & MT1389D and the FLASH
access time whether is suitable or not.
NO
SDRAM works properly?
Check connection lines
between SDRAM & MT1389D
and the SDRAM is damaged.
NO
MT1389D VIDEO outputs
properly?
Check the related circuit of
MT1389D.
NO
Have TV signal output?
Check AV cable connection
to TV set.
Normal TROUT &TRIN
signals?
Check the filtering and amp
circuit of TV signal.
NO
Check the load OPEN &
CLOSE switch
NO
Normal TRCLOSE &
TROPEN signal?
Check the Tray control IO
pins on MT1389D & IP9008.
NO
Normal LOAD+ & LOADsignal?
Check the cable connection
between main PCBA and
loader.
Check the Tray control
amplifying circuit on Motor
driver.
NO
Page 16
3-6
B
Does the SLED move to
inner side when it is at outer
position?
YES
Do not put in disc and tray
close.
Optical Lens has movement
for searching Focus?
NO
NO
Motor Driver STBY Pin is
High?
YES
Is FMSO DC Level higher
than 1.4V?
YES
SL+ and SL- output
properly?
YES
Check the cable connection
with MECHA.
Proper FOSO outputs
to motor driver?
NO
NO
NO
NO
Check the connection line of
STBY signal.
Check the related circuit of
FMSO.
Check the amp circuit on
motor driver.
Check FOSO connection on
MT1389D and motor dirver.
C
YES
YES
Proper F+ & F- outputs?
YES
Check cable connect on with
pick-up head.
NO
Check the amp circuit on
motor dirver.
Page 17
3-7
C
LD01 or LD02 output
properly?
Laser turns on when
reading disc?
Put disc in?
Disc ID is correct?
Does spindle rotate?
D
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Check the laser power circuit
on MT1389D and connecting
to power transistor.
NO
Collector voltage of
power transistor is OK?
Check the related circuit on
laser power transistor
NO
Check cable connection
between transistor ouput
and pick-up head.
YES
YES
YES
Check the related circuit on
MT1389D RFL signal.
Check DMSO related
circuit on MT1389D.
NO
NO
Check the spindle control
amp circuit of motor driver.
NO
Laser off
Proper RFL signal on
MT1389D?
Check LDO1 & LDO2 signal
Proper DMSO signal on
MT1389D
SP+ & SP- output properly?
Check the cable connection
between spindle and main
PCBA.
Page 18
3-8
D
Proper signals on A, B, C,
D of MT1389D
Focus ON OK?
Track On OK?
Disc is play ?
E
NO
NO
NO
YES
YES
YES
YES
YES
Check connections between
MT1389D and pick-up head.
NO
Check FEO signal on
MT1389D
YES
Check the FOSO connection on MT1389D and
motor driver.
NO
Check FOSO signal on
MT1389D
YES
YES
Check the TRSO
connection on MT1389D
and motor dirver.
NO
Check the tracking control
amp circuit on motor driver.
NO
Normal TEO Signal on
MT1389D?
NO
Check the related
circuit on MT1389D
Properly TRSO signal on
MT1389D?
T+ & T- output properly?
Check cable connection on
pick-up head.
Check RFO & RFLVL signal
waveform.
Page 19
3-9
E
TEST END
Normal Audio output
when disc playback?
YES
Normal IR.VFD & Front
key functions?
panel
YES
NO
NO
Audio DAC received
correct data stream?
YES
Normal Audio DAC out?
YES
Check Audio
filter,amplify,mute
circuit.
Communications between
IR.VFD Front panel key &
MT1389D is normally?
YES
Check the cable connection
on Front panel.
NO
NO
NO
Check connection between
MT1389D & Audio DAC.
Check the related circuit of
Audio DAC.
Check communication lines
on MT1389D.
Page 20
3-10
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL.
1) MT1389D main clock is at 27MHz(X501)
FIG 1-1
1.0V, 27MHz
2) MT1389D reset is low active.
FIG 1-2
Reset Time
3.3VA
PWR_CTL
RESET
Page 21
3-11
3) RS232 waveform during procedure(Downloading)
FIG 1-3
TXD
RXD
4) Flash R/W enable signal during download(Downloading)
FIG 1-4
PRD
PWR
Page 22
3-12
2. SDRAM CLOCK
FIG 2-1
3. TRAY OPEN/CLOSE SIGNAL
FIG 3-1
DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V
TRIN
TROUT
TRCLOSE
TROPEN
Page 23
3-13
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
FIG 4-1
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 5-1
FOSO(1.5V/1.4V/1.3V)
F+(3.2V/2.7V/2.2V)
F-(3.2V/2.7V/2.2V)
FMSO(1.9V/1.4V/1.1V)
STBY(3.3V)
SL+(4.2V/2.8V/1.2V)
SL-(4.2V/2.8V/1.5V)
Page 24
3-14
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 6-1
7. DISC TYPE JUDGEMENT WAVEFORM
FIG 7-1(DVD)
DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V
F+
FE
RFL
MDI1(0V/180mV)
LD01(3.3V//2.3V)
LD02(3.3V/2.3V)
Page 25
3-15
FIG 7-2 (DVD)
FIG 7-3 (CD)
F+
F+
FE
FE
RFL
RFL
Page 26
3-16
FIG 7-4 (CD)
8. FOCUS ON WAVEFORM
FIG 8-1 (DVD)
FE
FOSO
F+
F-
F+
FE
RFL
Page 27
3-17
FIG 8-2 (CD)
9) SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)
FIG 9-1
FOSO
F+
DMSO(1.4V/1.8V)
SP-(3.6V/2.4V)
SP+(3.6V/4.8V)
FE
F-
Page 28
3-18
10. TRACKING CONTROL RELATED SIGNAL(System checking)
FIG 10-1 (DVD)
FIG 10-2 (CD)
TE
TRSO
T+
T-
TE
TRSO
T+
T-
Page 29
3-19
11. MT1389D AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)
FIG 11-1
12. MT1389D VIDEO OUTPUT WAVEFORM
1) 100%
FIG 12-1
TE
TRSO
T+
T-
Page 30
3-20
2) COMPOSITE VIDEO SIGNAL
FIG 13-2
13. AUDIO OUTPUT FROM AUDIO DAC
FIG 13-1
Page 31
3-21
BLOCK DIAGRAMS
1. Overall Block Diagram
L/R
MIC
DAC_RST
RS232_TXD/MIC_DECT
3V3M/5V
IC301
(6DAC)
CS4360
SER[0:2],DAC_ML1
IC504
AT24C02A
VD33D
IIC/VFD/DAC_TXD
IIC/VFD/DAC_SCK
RS232_RXD
RS232
CN503
MD[00:15]
1M
IC503
VD33D
MA[00:11]
DMCLK
CSJ
BA0
BA1
DQM
WEJ
CASJ
16BIT
SDRAM
RASJ
AMP
IC601
EEPROM
R
L
IC501
CENTER
WOOFER
RL
RR
FL
FR
L/R
IECDAOUT
YC_MIX
27MHz
D2_T[1:3]
SCART_16:9
RGB_SEL
DMUTE
TV_DAC[0:3]
+12V
+12V
IC30[2,3.4]
IR
IC801
BA3308
CENTER
WOOFER
RL
RR
KA5532
OP-AMP
FL
FR
COAXIALSPDI
Y
C
B/Pb
R/PrG/Y
VIDEO BUFFER
CVBS
R/C
RC901
JACK
MTK 1389D
V33A
DISC
IC502
ROMDATA[0:7]
ROMWR
ROMRD
19]
PICK_SEL, VR_CD,VR_DVDIOA
LD01,LD01,V20
ROMAD[0:
VD18A/VD33A
OPU_SEL
LIMIT
TRIN TROUT
OP+,OP-
T[+,-]
F[+,-]
SPE[+,-]
VD18A
STBY
TROPEN ,TRCLOSE,FOSO,TRSO,FMSO,DMSO
1M
8BIT
FLASH ROM
MX29LV800T/B
DVD : A,B,C,D,RF0
CD : A,B,C,D,E,F,RF0
MDI1
UP
PICK
RXD
POWCTL H
M
SL[+,-]
LOAD[+,-]
IC201
IP9008
5.6VA
MOTOR
SPINDLE
SLED
MOTOR
(FEEDING)
MOTOR
LOADING
M
M
IC901
5V
LED DRIVER
LED
DIG901
5V
12V
3.3V
BOARD
POWER
50HZ/60Hz
AC 90V~240V
KEY Input
5.6VA
3.3VA
Page 32
3-22
2. Power(SMPS) Block Diagram
LPF
12V
5V
LPF
WITH
T/ W
5.6V(M)
/ 5.6VA
1389D
WITH 1389C
REG.
8V
LPF
3.2V
3.4VA
PWR CTL
RECTIFIER(14V)
RECTIFIER(5.6V)
TRANS
SWITCHING IC
FILTER
RECTIFIER(9.5V)
RECTIFIER
RECTIFIER(3.4V)
FEED B.
AC100~240V
Page 33
3-23
3. SERVO Block Diagram
FLASH
AD[0:7]
A[0:20]
X501
27MHz
X-TAL
ROM
PRD#, PWR#
PCE#
IC501
MT1389D
EEP
ROM
SCL, SDA
DVDPLAYER
RS232C(MTK)
RXD, TXD
ONE CHIP
MA[0:11]
DQM0 ,DQM1
WE#,CAS#,RAS#
CS#,BA0,BA1
SDCLK
SDCKE
IC503
SDRAM
DQ[0:15]
1M x 16bit
TRCLOSE
ADIN
IC201
IP9008
FOSO,TRSO,FMSO
STBY,V1P4
DMSO,,TROPEN
Motor Driver
ALPC
MDI 1
LD0 1, LDO 2, IOA
V20, PICKSEL
DVD: A,B,C,D, RFO
UP
PICK
CD: A,B,C,D, E, F,RFO
LIMIT,TRIN,TROUT
F+, F-, T+, T-
SP+, SP-
LOAD+, LOAD-
SL+, SL-
M/D
Page 34
3-24
4. MPEG & MEMORY Block Diagram
VIDEO
Interface
IC506
EEPROM
Y2(Y),Y3(Color)
Y4(Y),Y5(Cb),Y6(Cr)
ASPECT(16:9)
SCL,SDA
AUDIO
Interface
AL,AR
AMUTE,DMUTE
ASPDIF
AD[0:7]
A[0:20]
PWR,PCE,PRD
IC502
(8 M )
FLASH MEMORY
IC503
SDRAM
16M
IC508
IC509
A/D Con.
(Karaoke)
OP Amp
CS,DCKE,MA[0:10]
DCLK,WE,CAS,RAS
DQ[0:15]
DQM0,DQM1
MT1389C
IC501 (MPEG + DSP + RF)
AMDAT
ALRCK
ACLK,ABCK
RESET
IC505
RESET IC
X501
27MHz
DOUT
DIN
LED DRIVE IC
BOARD
KARAOKE
Page 35
3-25
5. VIDEO & AUDIO Block Diagram
A/V
JACK
CVBS
COMPONENT (R.G.B) / (Y.Pb.Pr )
SUPER VIDEO (Y/C)
AUDIO 'R'
AUDIO 'L'
IC601 (OP Amp)
LPF&Buffer
REAR 'R'
FRONT 'R'
IC302 (OP Amp)
LPF&Buffer
5.1CH BOARD
REAR 'L'
FRONT 'L'
IC303 (OP Amp)
LPF&Buffer
CENTER
WOOFER
IC304 (OP Amp)
LPF&Buffer
Amp
IC604
VIDEO 6dB
(R.G.B) / (Y.Pb.Pr )
MPEG
(Y/C)
AL
AR
MPEG
DAC RESET
IC301
AUDIO DAC
SCL
ACLK
(5.1CH)
SDA
MPEG
ADATA2
ADATA1
ADATA3
Page 36
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