Page 1
CONTENTS
SECTION 1 . . . .SUMMARY
SECTION 2 . . . .CABINET & MAIN CHASSIS
SECTION 3 . . . .ELECTRICAL
SECTION 4 . . . .MECHANISM
SECTION 5 . . . .REPLACEMENT PARTS LIST
Page 2
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 3
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 4
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 5
1-5
SPECIFICATIONS
• GENERAL
Power requirements: AC 100-240 V , 50/60 Hz
Power consumption: 12W
Dimensions (Approx.): 430 x 39 x 242 mm (W x H x D) without foot
Weight (Approx.): 2.2 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/ SCART (TO TV)
AUDIO OUT: 2.0 Vrms (1 KHz, 0 dB), 600 Ω,
RCA jack (L, R) x 1/ SCART (TO TV)
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 0.008%
Dynamic range: More than 90 dB (DVD/CD)
• Accessories
Video cable (1), Audio cable (1), Remote control (1), Batteries (2)
Page 6
2-1
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS .....................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2
2. Packing Accessory Section ....................................................................................................2-3
Page 7
2-2
EXPLODED VIEWS
1. Cabinet and Main Frame Section
A
5
4
3
2
1
BCD
463
463
463
A47
A00
280
463
A48
A46
465
300
465
467
A44
261
320
463
463
A45
283
260
A43
452
452
A42
A49
280
261
Page 8
2-3
2. 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
Page 9
3-1
SECTION 3
ELECTRICAL
CONTENTS
FEATURES FOR MEMORY CARD READ............................................................................3-2
ELECTRICAL TROUBLESHOOTING GUIDE......................................................................3-3
1. Power check flow.....................................................................................................................3-3
2. System operation flow ............................................................................................................3-4
3. Test & debug flow ....................................................................................................................3-5
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....................3-11
1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL. ....................................................3-11
2. SDRAM CLOCK ......................................................................................................................3-13
3. TRAY OPEN/CLOSE SIGNAL ................................................................................................3-13
4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-14
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-14
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) ............................3-15
7. DISC TYPE JUDGEMENT WAVEFORM ................................................................................3-15
8. FOCUS ON WAVEFORM........................................................................................................3-17
9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION ...................................................3-18
10. TRACKING CONTROL RELATED SIGNAL(System checking).........................................3-19
11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF).............................................3-20
12. MT1389 VIDEO OUTPUT WAVEFORM................................................................................3-20
13. MT1389 AUDIO OUTPUT TO AUDIO DAC..........................................................................3-21
14. AUDIO OUTPUT FROM AUDIO DAC ..................................................................................3-22
BLOCK DIAGRAMS ..................................................................................................................3-23
1. Overall Block Diagram ..........................................................................................................3-23
2. Power(SMPS) Block Diagram ...............................................................................................3-24
3. SERVO Block Diagram ..........................................................................................................3-25
4. MPEG & MEMORY Block Diagram .......................................................................................3-26
5. VIDEO & AUDIO Block Diagram ...........................................................................................3-27
CIRCUIT DIAGRAMS ................................................................................................................3-28
1. Power(SMPS) Circuit DIAGRAM...........................................................................................3-28
2. AV/JACK Circuit DIAGRAM...................................................................................................3-30
3. SYSTEM Circuit DIAGRAM ...................................................................................................3-32
4. DRIVER Circuit DIAGRAM.....................................................................................................3-33
5. TIMER Circuit DIAGRAM .......................................................................................................3-36
6. 5.1CH, SCART Circuit DIAGRAM .........................................................................................3-38
• CIRCUIT VOLTAGE CHART ....................................................................................................3-40
PRINTED CIRCUIT DIAGRAMS ............................................................................................3-42
1. MAIN P.C.BOARD ...................................................................................................................3-42
2. KEY P.C.BOARD .....................................................................................................................3-44
3. TIMER P.C.BOARD .................................................................................................................3-45
4. SCART & 5.1CH P.C.BOARD(OPTIONAL PART) .................................................................3-46
5. SMPS P.C.BOARD ..................................................................................................................3-47
Page 10
3-2
FEATURES FOR MEMORY CARD READ
1. There will be a key in front panel to convert mode from disc ( or VCR or AUX ) to memory, vice versa.
2. In disc mode ( Any status ), if user press MEM key, we have to change the mode if there is memory card. If
there is no memory card inserted, please shows warning messages after change to MEM mode.
There is no memory card.
Please insert a memory card
3. If there is memory card, please show below GUI, PIC-1.
4. Below OSD shows that there are two card slot exist. If only one slot has the card, other slot OSD should
shows disable color.
5. If use select one of slot, it will shows file browser, PIC-2.
6. All function should work as disc mode when we are in memory card mode.
7. To distinguish disc and memory card, we use different icon in browser. Please refer yellow circle in PIC-2.
8. If there are two memory card is inserted and user want to move other slot, he/she have to press RETURN
key.
If then, it will shows PIC-1 again.
9. In memory card mode, if we press MEM ( Stand alone model ) key or VCR/AUX key ( VCR/Audio model ),
it should exit current mode and go to disc or VCR or AUX mode.
10. After select one of slot, if we insert/pull out another slot, nothing happens on current status. But, after
return to selection OSD, it should be applied on OSD. ( two card -> select one card -> while playing, pull
out the other card -> press RETURN and go to selection OSD. -> Just one card should be enabled. )
11. If there are two cards are inserted and we are playing one of card. At that time, pull out current card. If
then, it will exit current browser and shows selection OSD automatically.
12. If there are one card are inserted and we are playing that. If the user pull out current memory card, please
display warning message same as step ‘2’.
PIC-1 PIC-2
Page 11
3-3
ELECTRICAL TROUBLESHOOTING GUIDE
No 5V_A
No 5.2VA
Is 5.2VA section working?
Is 5.2V present at emitter
of Q107?
Replace Q107.
Is there a DC voltage At
(+) terminal of BD101?
Is there a DC voltage at
R101?
Replace IC101.
Check F101
1. Power check flow
No VF+
Is 5.2VA section working?
Replace D102.
Check F102
NO
NO
YES
YES
YES
YES
Replace R101.
YES
Replace BD101.
YES
YES
A. B.
NO
NO
NO
NO
Page 12
3-4
2. System operation flow
Power On
1. 8032 initializes SERVO, DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
YES
Tray Closed?
NO
Tray Close to Closed position
SLED at Inner
Side ?
NO
SLED Moves to Inner Positi on
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
Reci eve
OPEN/CLOSE
Key?
YES
YES
NO
1. Execute Pressed Key & IR Key
2. System operation Routine Loop
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
NO
Receive
CLOSE Key?
YES
Page 13
3-5
3. Test & debug flow
TEST
Check the AC Voltage
Power PCBA(110V or 220V)
YES
Switch on the Power PCBA
Is the DC Voltage
outputs OK?
(5V,1.8V,3.3V,8V,12V)
YES
Make sure the main PCBA don't
short on VCCs and switch it on.
NO
NO
Replace power PCBA or
AC transformer.
Repair or Replace Power PCBA
Is 3.3V and 1.8V DC
outputs normal on main
PCBA?
YES
Connect to PC RS232 Cable and
update the FLASH memory code.
Update FLASH
successfully?
YES
A
NO
Check the regulators or related diodes.
1. Check 27MHz system clock.
NO
2. Check system reset circuit.
3. Check FLASH R/W enable signal PRD,RWR.
4. Check RS232 SIGNALS.
5. Check FLASH Memory related circuit.
Page 14
3-6
A
RESET or Power On.
Show LOGO?
NO
Flash Memory operates
properly?
YESYES
SDRAM works properly?
YES
MT1389 VIDEO outputs
properly?
YES
Have TV signal output?
YES
Check AV cable connection
to TV set.
NO
NO
NO
NO
Check connection lines between FLASH
& MT1389 and the FLASH access time
whether is suitable or not.
Check connection lines between
SDRAM & MT1389 and the SDRAM
is damaged.
Check the related circuit of MT1389.
Check the filtering and amp circuit of
TV signal.
Does Tray move
inside when it is not
at closed position?
YES
B
NO NO
Normal TROUT &
TRIN signals?
YES
Normal TRCLOSE &
TROPEN signal?
YES
Normal LOAD+ &
LOADsignal?
YES
Check the cable connection
between main PCBA and loader.
NO
NO
Check the load OPEN & CLOSE
switch
Check the Tray control IO pins on
MT1389 & IP4504.
Check the Tray control amplifying
circuit on Motor driver.
Page 15
3-7
B
Does
the SLED move
to inner side when it is at
outter position?
YES YES
NO NO
Motor Driver STBY
Pin is High?
Check the connection line of
STBY signal.
Do not put in disc and tray
close.
Optical Lens has
movements for searching
Focus?
Is FMSO DC Level higher
than 1.4V?
YES
SL+ and SL- output
properly?
YES
Check the cable connection with
NO NO
MECHA.
Proper FOSO outputs
to motor driver?
NO
NO
Check the related circuit of
FMSO.
Check the amp circuit on motor
driver.
Check FOSO connection on
MT1389 and motor dirver.
YESYES
Proper F+ & F- outputs?
YES
C
Check cable connect on with
pick-up head.
NO
Check the amp circuit on motor
dirver.
Page 16
3-8
C
Laser turns on when
reading disc?
YES
Put disc in? Laser off
YES
Disc ID is correct?
NO
NO
NO
LD01 or LD02 output
properly?
Collector voltage of
power transistor is OK?
Check cable connection between
transistor ouput and pick-up
head.
Proper RFL signal
on MT1389?
YES
YES
YES
NO
NO
NO
Check the laser power circuit
on MT1336 and connecting to
power transistor.
Check the related circuit on
laser power transistor
Check the related circuit
on MT1389 RFL signal.
YES
Does spindle rotate?
YES
D
NO
Check LDO1 & LDO2 signal
Proper DMSO signal on
MT1389
YES
SP+ & SP- output
properly?
YES
Check the cable connection
between spindle and main PCBA.
NO
NO
Check DMSO related
circuit on MT1389.
Check the spindle control
amp circuit of motor
driver.
Page 17
3-9
D
YES
Focus ON OK?
YES
Track On OK?
YES
NO NO
NO
Proper signals on
A,B,C,D of MT1389
YES
Check FEO signal
on MT1389
YES
Check FOSO signal on MT1389
Normal TEO Signal on
MT1389?
YES
Properly TRSO signal
on MT1389?
YES
NO
NO
NO
Check connections between
MT1389 and pick-up head.
Check the FOSO connection on
MT1389 and motor driver.
Check the related
circuit on MT1389
Check the TRSO
connection on MT1389
and motor dirver.
Disc is play ?
YES
E
NO
T+ & T- output
properly?
YES
Check cable connection on
pick-up head.
Check RFO & RFLVL signal waveform.
NO
Check the tracking control
amp circuit on motor
driver.
Page 18
3-10
E
Normal Audio output
when disc playback?
YES
Normal IR.VFD & Front
pannel key functions?
YES
TEST END
NO NO
NO
Audio DAC received
correct data stream?
YES
Normal Audio DAC
out?
YES
Check Audio filter,amplify,mute
IR.VFD Front pannelkey & MT1389
Check the cable connection on
circuit.
Communications between
is normally?
YES
Front pannel.
NO
NO
Check connection between MT1379
& Audio DAC.
Check the related
circuit of Audio DAC.
Check communication lines on
MT1389.
Page 19
3-11
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL.
1) MT1389 main clock is at 27MHz(X501)
FIG 1-1
2) MT1389 reset is low active.
FIG 1-2
Page 20
3-12
3) RS232 waveform during procedure(Downloading)
FIG 1-3
4) Flash R/W enable signal during download(Downloading)
FIG 1-4
Page 21
3-13
2. SDRAM CLOCK
3. TRAY OPEN/CLOSE SIGNAL
FIG 2-1
FIG 3-1
Page 22
3-14
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
FIG 4-1
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FIG 5-1
Page 23
3-15
6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION)
FIG 6-1
7. DISC TYPE JUDGEMENT WAVEFORM
FIG 7-1
Page 24
3-16
FIG 7-2 (DVD)
FIG 7-3 (CD)
Page 25
3-17
FIG 7-4 (CD)
8. FOCUS ON WAVEFORM
FIG 8-1 (DVD)
Page 26
3-18
FIG 8-2 (CD)
FIG 9-1
9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)
Page 27
3-19
10. TRACKING CONTROL RELATED SIGNAL(System checking)
FIG 10-1 (DVD)
FIG 10-2 (CD)
Page 28
3-20
FIG 11-1 (DVD)
11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT (SPDIF)
12. MT1389 VIDEO OUTPUT WAVEFORM
1) 100%
FIG 12-1
Page 29
3-21
13. MT1389 AUDIO OUTPUT TO AUDIO DAC
2) COMPOSITE VIDEO SIGNAL
FIG 12-2
FIG 13-1
ASDATA3
Page 30
3-22
14. AUDIO OUTPUT FROM AUDIO DAC
FIG 14-1
Page 31
3-23
BLOCK DIAGRAMS
1. Overall Block Diagram
RS232
CN503
Download
4M
IC503
16BIT
D
VD33
4Bank
SDRAM
CSJ
DMCLK
MA[00:11]
USBM
BA0
BA1
DQM
VD33D
RS232_RXD
MD[00:15]
WEJ
CASJ
RASJ
IC506
IIC/VFD/DAC_SCK
KS24C02
IIC/VFD/DAC_TXD
+12V
+12V5V
IC903
IC602
IC302~4
IC604
RESET IC
L/R
OP-AMP
UTC4580
CENTER
WOOFER
RL
RR
FL
FR
OP-AMP
UTC4580
SPDIF
COAXIAL
Y
C
B/Pb
R/Pr G/Y
MM1623XFBE
CVBS
VIDEO BUFFER
R/C
RC901
TRIGGER
JACK
L/R
DAC_RST
RS232_TXD
2DAC
SER3,DAC_ML0
3V3M
IC301
(6DAC)
CS4360
SER[0:2],DAC_ML1
RF+
MPEG IC
IC601
CS4391
EEPROM
VD33D/5V
BCLK
LRCLK
DACCLK
IECDAOUT
27MHz
CENTER
WOOFER
RL
RR
FL
FR
DMUTE
TV_DAC[0:3]
YC_MIX
D2_T[1:3]
SCART_16:9
RGB_SEL
VIDEO_SW
IC1001
GL816
MEMORy CARD IC
2/4M
IC502
MX29LV160T
VD33D
DISC
16/32BIT
DVD : A,B,C,D,RF0
CD : A,B,C,D,E,F,RF0
SPINDLE
FLASH ROM
PICK
MOTOR
CDMDI,DVDMDI
M
UP
USBP
CDLD,DVDLD,SVREF21
ROMDATA[0:7]
ROMWR
ROMRD
ROMAD[0:19]
CD_DVD, VR_CD,VR_DVD
SLED
MOTOR
(FEEDING)
MOTOR
LOADING
VD18/VD33
OPU_SEL
CD_DVD_CT
Pick-up
M
M
DECK MECHANISM
IC501
MTK MT1389
HOMESW
XSFGN,XSFGP
TRACK[+,-]
FOCUS[+,-]
SPINDLE[+,-]
SLED[+,-]
LOAD[+,-]
INSW,OUTSW
5V/8V
OPEN,CLOSE,SLEGP,SPINDLE,FOCUS,TRACK,SVREF
IC201
M_REQ
Front Micom
VD33,VD33D
3V3M
VD18
U7
3.3V
3.3V-M
3.3V-M1
BOARD
50HZ/60Hz
6MHz
KEY Input
8V
IC507
74HCT244
5.2VA
S_REQ
VFD_RXD
IC901
M-RESET
5.2VA
VF-
-27VA
-27VA/VF+/VF-
5.2VA
DIG901
5V
GMS81C2012(Hynix)
FLD DISPLAY
+12V
12V
PWRCTL
VF+
DRVSB
POWER
IP4504
Motor Drive
AC 90V~240V
Page 32
3-24
2. Power(SMPS) Block Diagram
F+
F-
FLD
-23VA
12V
REG(12V)
LPF
8V
REG(8V)
LPF
3.3V
1.8V
REG(3.3V)
REG(1.8V)
LPF
5.2VA
5VD
PWR CTL
RECTIFIER(FLD)
RECTIFIER(14V)
SWITCHING IC
RECTIFIER
RECTIFIER(9V)
TRANS
RECTIFIER(3.8V)
LINE FILTER
RECTIFIER(5.2V) LPF
FEED B.
AC85~240V
Page 33
3-25
3. SERVO Block Diagram
AD[0:7]
X501
27MHz
X-TAL
ROM
FLASH
A[0:20]
EEP
ROM
SCL, SDA
PRD#, PWR#
PCE#
IC501
MT1389
DVDPLAYER
ONE CHIP
RS232C(MTK)
RXD, TXD
MA[0:11]
DQM0 ,DQM1
WE#,CAS#,RAS#
CS#,BA0,BA1
SDCLK
SDCKE
IC503
SDRAM
DQ[0:15]
4M x 16bit
ALPC
LD0 1, LDO 2, IOA
MDI 1
V20, PICKSEL
DVD: A,B,C,D, RFO
UP
PICK
TRCLOSE
ADIN
IC201
IP4504
STBY,V1P4
FOSO,TRSO,FMSO
DMSO,,TROPEN
Motor Driver
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
3-26
4. MPEG & MEMORY Block Diagram
VIDEO
Interface
IC506
EEPROM
Y2(Y),Y3(Color)
Y4(Y),Y5(Cb),Y6(Cr)
ASPECT(16:9)
SCL,SDA
ACLK,ALRCK,ABCK
MUTE,VSCK,VSDA
ASDTA[0:3]
AUDIO
Interface
ASPDIF
ASTB,SCL,SDA
AD[0:7]
A[0:20]
IC502
PWR,PCE,PRD
(16 M )
FLASH MEMORY
IC503
SDRAM
64M
IC508
IC509
A/D Con.
(Karaoke)
OP-Amp
CS,DCKE,MA[0:10]
DCLK,WE,CAS,RAS
DQ[0:15]
DQM0,DQM1
AMDAT
ALRCK
ACLK,ABCK
M_RE Q
(74HCT244)
VFD_TXD
VFD_SCK
MT1389
IC501 (MPEG + DSP + RF)
IC507
X501
27MHz
VFD_RXD
URST,S_REQ
Voltage level shift
Interface
FRONT MICOM
SCKO,TXDO,M-REQ
(FRONT BOARD)
BOARD
KARAOKE
Page 35
3-27
5. VIDEO & AUDIO Block Diagram
A/V
JACK
CVBS
REAR R
FRONT R
AUDIO R
AUDIO L
COMPONENT (R.G.B) / (Y.Pb.Pr )
SUPER VIDEO (Y/C)
IC602 (OP Amp)
LPF&Buffer
IC302 (OP Amp)
LPF&Buffer
REAR L
FRONT L
IC303 (OP Amp)
LPF&Buffer
CENTER
WOOFER
IC304 (OP Amp)
LPF&Buffer
5.1CH BOARD
Amp
IC604
VIDEO 6dB
(R.G.B) / (Y.Pb.Pr )
MPEG
(Y/C)
IC601
DAC RESET
(2CH)
AUDIO DAC
SCL
ACLK
MPEG
SDA
ADATA3
DAC RESET
IC301
AUDIO DAC
SCL
ACLK
(5.1CH)
SDA
MPEG
ADATA2
ADATA1
ADATA3
Page 36
3-28 3-29
CIRCUIT DIAGRAMS
1. POWER(SMPS) CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG ELECTRONICS CORPORATION. ALL
COMPONENTS SHOULD BE REPLACED ONLY WITH
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-
CUIT. SPECIAL COMPONENTS ARE SHADED ON THE
SCHEMATIC FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.
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.
VF(+) Power dead
R102 is defective
VF(-) Power dead
ZD101 is defective
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
Power dead
IC101 is defective
5V Power dead
Q107 is defective
NOTES : Symbol denotes AC ground.
Symbol denotes DC chassis ground.
A B C D E F G H I J K L M N O P Q R ST
Page 37
3-30 3-31
2. AV/JACK CIRCUIT DIAGRAM
2CH Audio out bad.
All Video signal isn't
appear or bad
2CH Audio out bad.
A B C D E F G H I J K L M N O P Q R ST
Page 38
3-32 3-33
A B C D E F G H I J K L M N O P Q R ST
3. SYSTEM CIRCUIT DIAGRAM
Page 39
3-34 3-35
4. DRIVER CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R ST
CD/DVD LD
will not on
Page 40
3-36 3-37
5. TIMER CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R ST
Remocon not operate
Remocon not operate
System not operate or
Digitron abnormal or
Key not operate.
Digital abnormal
Digital abnormal
Page 41
3-38 3-39
6. 5.1CH, SCART CIRCUIT DIAGRAM
A B C D E F G H I J K L M N O P Q R ST
5.1CH Audio bad
Page 42
• CIRCUIT VOLTAGE CHART
3-40 3-41
STOP PLAY
MODE
PIN NO.
IC201(MT1336E)
IC501(MT1389 MPEG)
1 1.4 1.41
2 2.17 2.03
3 2.17 2.04
4 2.16 2.02
5 2.16 1.94
6 2.17 1.98
7 2.17 2
8 0 0.01
9 1.41 1.44
10 4.38 4.19
11 0.01 0.01
12 0.01 0
13 1.79 1.7
14 1.82 1.73
15 1.81 0.33
16 1.81 2.68
17 1.79 1.76
18 1.8 1.65
19 3.66 3.48
20 1.4 1.39
21 1.4 1.74
22 1.4 1.4
23 3.3 3.29
24 5.18 5.16
25 2.21 2.15
26 2.16 1.92
27 2.21 2.05
28 2.16 2.01
100
2 1.73 0
3 1.73 1.73
4 1.73 1.73
5 1.73 1.73
6 1.75 1.73
7 2.15 1.74
8 2.2 2.21
9 2.18 2.18
10 2.16 0
11 2.14 2.14
12 1.74 1
13 1.04 1
14 1.03 1
15 0.12 1
16 0.13 0
17 0.12 1
18 0.13 2.05
19 2.05 0
20 2.05 0
21 2.05 0
22 2.38 0
23 3.29 0
24 3.3 3.3
25 0.21 1
STOP PLAY
MODE
PIN NO.
26 2.34 0
27 0 0
28 2.8 2.8
29 2 0
30 1.4 0
31 1.52 0
32 1.38 0
33 1.38 0
34 2.62 0
35 2.62 2.73
36 2.25 0
37 2.2 2.11
38 1.37 1.36
38 0 0
40 1.4 0
41 1.43 0
42 1.4 141
43 0 0
44 0 0
45 0 0
46 3.3 3.3
47 2.64 0
48 3.32 0
49 0.01 0
50 3.3 0
51 0 0
52 1.76 1.8
53 2.13 0
54 2.14 2.12
55 2.13 1.74
56 1.81 1.34
57 2.12 0
58 1.83 1.52
59 0 1.63
60 0 2.99
61 0 0
62 0 0
63 0 2.05
64 0 0
65 3.3 3.3
66 3.3 3.32
67 1.29 0
68 2.36 0.32
69 0 0.37
70 0.56 0.46
71 0 3.2
72 1.27 1.42
73 3.3 3.3
74 2.23 1.93
75 1.39 0
76 0 0
77 0 0
78 2.06 0
79 0 0
80 3.3 3.3
STOP PLAY
MODE
PIN NO.
81 1.2 1.07
82 0 0.82
83 1.17 0.77
84 0.64 0.54
85 0 0
86 1.44 0.53
87 1.65 1.77
88 1.4 1.53
89 0 0
90 1.21 1.2
91 1.02 1.03
92 0 0
93 2.06 1.93
94 0 0
95 3 2.74
96 3.28 3.25
97 1.8 1.8
98 3 2.7
99 3 2.7
100 2.97 2.67
101 0 2.68
102 3.33 3.32
103 3.33 3.32
104 3 2.7
105 5.18 5.18
106 3.32 3.31
107 2.76 2.75
108 3.3 3.3
109 0 0
110 5.2 5.2
111 2.67 2.92
112 3.14 3.18
113 2.28 1.6
114 0 0
115 1.06 0.85
116 0 0
117 1.04 1.09
118 1.28 0.94
119 0 0
120 1.18 1.65
121 1.36 1.7
122 1.8 1.75
123 1.26 1.51
124 1.23 1.4
125 1.28 1.16
126 0 0.86
127 3.3 3.3
128 2.35 1.28
129 1.8 1.05
130 0 1.1
131 1.39 1.25
132 1.37 1.27
133 1.31 1.3
134 0 0
135 1.33 1.37
STOP PLAY
MODE
PIN NO.
136 3.3 3.3
137 2.63 1.65
138 3.27 3.1
139 3 2.63
140 3.2 3.1
141 3.3 3.3
142 2.9 2.38
143 1.59 1.7
144 0 0
145 1.38 1.55
146 0.07 0
147 0.31 0.78
148 0 0
149 1.51 1.95
150 1.49 1.93
151 1.49 1.62
152 1.8 1.75
153 0 0
154 0 0
155 3.3 3.3
156 1.72 1.72
157 0.92 2.29
158 0 0
159 0 0
160 0 0
161 0 0
162 1.56 1.4
163 0 0
164 2.36 1.54
165 2.32 1.61
166 1.49 1.61
167 3.3 3.3
168 3.25 3.24
169 3.3 3.27
170 0 0
171 0 0
172 0 0
173 1.8 1.8
174 3.33 3.3
175 0 0
176 2.73 2.73
177 0 0
178 3.32 3.32
179 2.75 0
180 0 0
181 0 0
182 3.3 3.3
183 0 0
184 0 0
185 0 0
186 0 0
187 0 0
188 0 0
189 3.3 3.3
190 1.24 1.24
STOP PLAY
MODE
PIN NO.
191 1.25 1.24
192 2.26 2.25
193 0 0
194 0.46 0.47
195 3.3 3.3
196 0.7 0.7
197 0 0
198 3.28 3.29
199 3.3 3.3
200 0.42 0.43
201 0 0
202 0.57 0.38
203 0 0.42
204 3.3 3.3
205 0.25 2.62
206 2.72 2.64
207 2.71 2.63
208 0 0
209 0 0
210 0 0
211 0.1 3.3
212 3.3 3.3
213 1.31 1.66
214 1.67 1.64
215 1.58 1.57
216 0 0
217 0 1.24
218 0 1.1
219 0 0
220 0 0
221 1.76 1.76
222 0 1.24
223 0 0
224 0 0
225 1.66 1.65
226 0 0
227 1.8 1.76
228 3.3 3.3
229 3.3 3.3
230 0.85 0.86
231 0.81 0.82
232 0 0
233 0.83 0.89
234 3.19 3.18
235 1.74 1.72
236 1.71 1.71
237 1.71 1.71
238 1.72 1.75
239 3.19 3.18
240 0 0
241 0 0
242 0 0
243 0 0
244 3.19 3.19
245 1.55 1.55
STOP PLAY
MODE
PIN NO.
IC604(MM1623XFBE)
246 1.39 1.39
247 1.45 1.44
248 1.93 1.94
249 0 0
250 0 0
251 0 0
252 1.75 1.75
253 1.71 1.71
254 1.37 1.37
255 0.94 0.94
256 3.3 3.3
1 5.15 5.15
2 2.44 2.44
3 5.15 5.15
4 1.14 1.14
5 0 0.01
6 1.52 1.49
700
8 2.48 2.49
900
10 2.45 2.45
11 5.18 5.17
12 2.44 2.44
13 5.14 5.15
14 2.44 2.44
15 0 0
16 2.48 2.48
17 0 0
18 2.5 2.51
19 0 0
20 2.52 2.52
21 1.66 0
22 0 0
23 1.65 1.88
24 0.04 0.04
25 0.04 0.04
26 2.49 0
27 0.02 0.02
28 5.16 5.15
Page 43
3-42 3-43
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD
LOCATION GUIDE
Page 44
3-44 3-45
2. KEY P.C.BOARD 3. TIMER P.C.BOARD
(Solder Side)
Page 45
3-46 3-47
4. SCART & 5.1CH P.C.BOARD(OPTIONAL PART) 5. SMPS P.C.BOARD
(Solder Side)
(Solder Side)
Page 46
DECK MECHANISM PARTS
LOCATIONS
• Top View..................................................4-1
• Top View(without Tray Disc) .................4-1
• Bottom View ...........................................4-1
DECK MECHANISM
DISASSEMBLY
1. Main Base .........................................4-2
1-1. Clamp Assembly Disc .......................4-2
1-1-1. Plate Clamp ..................................4-2
1-1-2. Magnet Clamp ..............................4-2
1-1-3. Clamp Upper.................................4-2
2. Tray Disc ...........................................4-2
3. Base Assembly Sled ........................4-3
3-1. Gear Feed.........................................4-3
3-2. Gear Middle ......................................4-3
3-3. Gear Rack.........................................4-3
4. Rubber Rear......................................4-3
5. Frame Assembly Up/Down ..............4-4
6. Belt Loading......................................4-4
7. Gear Pulley .......................................4-4
8. Gear Loading ....................................4-4
9. Guide Up/Down.................................4-4
10. PWB Assembly Loading ................4-4
11. Base Main........................................4-4
EXPLODED VIEW
1. Deck Mechanism Exploded View....4-5
CONTENTS
SECTION 4 MECHANISM (DP-8)
Page 47
4-1
DECK MECHANISM PARTS LOCATION
Starting No.
1
1, 2
1, 2, 3
1, 2, 3, 4
1
1, 6
1, 2, 6
1, 2, 6, 8
1, 2, 6, 8,
9
1, 2, 7
1, 2, 7
1, 2
1, 2 ,13
1, 2, 13, 14
1, 2, 7, 12,
13, 14
1, 2, 13
1, 2, 7, 12,
13, 14, 15,
16, 17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Main Base
Clamp Assembly
Disc
Plate Clamp
Magnet Clamp
Clamp Upper
Tray Disc
Base Assembly Sled
Gear Feed
Gear
Middle
Gear Rack
Rubber Rear
Frame Assembly
Up/Down
Belt Loading
Gear Pulley
Gear Loading
Guide Up/Down
PWB Assembly
Loading
Base Main
4 Screws,
1 Connector
1 Locking Tabs
1 Screw
1 Screw
1 Locking Tab
1 Locking Tab
1 Locking Tab
1 Hook
2Screw
2 Locking Tabs
4-1
4-1
4-1
4-1
4-1
4-2
4-3
4-3
4-3
4-3
4-3
4-4
4-4
4-4
4-4
4-4
4-4
4-4
Bottom
Bottom
Procedure
Parts Fixing Type
Figure
Disass
embly
Note
When reassembling, perform the procedure in
reverse order.
The “Bottom” on Disassembly column of above
Table indicates the part should be disassembled
at the Bottom side.
• Top View (Without Tray)
• Bottom View
• Top View (With Tray)
Page 48
4-2
DECK MECHANISM DISASSEMBLY
1.Main Base (Fig. 4-1)
1-1. Clamp Assembly Disc
1) Place the Clamp Assembly Disc as Fig. (A)
2) Lift up the Clamp Assembly Disc in direction of
arrow(A).
3) Separate the Clamp Assembly Disc from the Holder
Clamp.
1-1-1. Plate Clamp
1) Turn the Plate Clamp to counterclockwise direction and
then lift up the Plate Clamp.
1-1-2. Magnet Clamp
1-1-3. Clamp Upper
2. Tray Disc (Fig. 4-2)
1) Insert and push a Driver in the emergency eject
hole(A) at the right side, or put the Driver on the
Lever(B) of the Gear Emergency and pull the Lever(B)
in direction of arrow so that the Tray Disc is ejected
about 15~20mm.
2) Pull the Tray Disc until it is separated from the Base
Main completely.
Fig. 4-1 Fig. 4-2
Page 49
4-3
DECK MECHANISM DISASSEMBLY
3.Base Assembly Sled (Fig. 4-3)
1) Release 4 Screw(S2).
2) Disconnect the FFC Connector(C1)
3-1. Gear Feed
3-2. Gear Middle
3-3. Gear Rack
1) Release the Scerw(S3)
4. Rubber Rear (Fig. 4-3)
Fig. 4-3
Page 50
4-4
DECK MECHANISM DISASSEMBLY
5. Frame Assembly Up/Down (Fig. 4-4)
Put the Base Main face down(Bottom Side)
1) Release the screw(S4)
2) Unlock the Locking Tab(L3) in direction of arrow and
then lift up the Frame Assembly Up/Down to separate
it from the Base Main.
• When reassembling move the Guide Up/Down in direction
of arrow(C) until it is positioned as Fig.(C).
• When reassembling insert (A) portion of the Frame
Assembly Up/Down in the (B) portion of the Guide
Up/Down as Fig.(B)
6. Belt Loading(Fig. 4-4)
Put the Base Main on original position(Top Side)
7. Gear pulley (Fig. 4-4)
1) Unlock the Locking Tab(L4) in direction of arrow(B) and
then separate the Gear Pulley from the Base Main.
8. Gear Loading (Fig. 4-4)
9. Guide Up/Down (Fig. 4-4)
1) Move the Guide Up/Down in direction of arrow(A) as
Fig.(A)
2) Push the Locking Tab(L5) down and then lift up the
Guide Up/Down to separate it from the Base Main.
When reassembling place the Guide Up/Down as Fig.(C)
and move it in direction arrow(B) until it is locked by the
Locking Tab(L5). And confirm the Guide Up/Down as Fig.(A)
10. PWB Assembly Loading (Fig. 4-4)
Put the Base Main face down(Bottom Side)
1) Release 1 Screws(S5)
2) Unlock the Loading Motor (C2) from the Hook (H1) on
the Base Main.
3) Unlock 2 Locking Tabs(L6) and separate the PWB
Assembly Loading from the Base Main.
11. Base Main(Fig. 4-4)
Note
Note
Note
Note
Note
Fig. 4-4
Page 51
Page 52
EXPLODED VIEWS
1. Deck Mechanism Exploded View
4-5 4-6
026
012
A00
019
013
017
439
014
435
015
018
015A
440
012A
001
002
A01
003
A02
020
016
012B
A03
031
034
036
437
030
432
024
033
431
034 438
010
021
012C
024A
435
430
025
035
035A
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