SHARP LC-20DV20U Service Manual
#########
LCD COLOR TELEVISION/
DVD VIDEO PLAYER
MODEL
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
CONTENTS
CAUTION..............................................................................................................................
•
IMPORTANT SERVICE SAFETY INFORMATION ..............................................................
•
IMPORTANT SAFEGUARDS...............................................................................................
•
WHEN REPLACING DVD DECK .........................................................................................
•
DISC REMOVAL METHOD AT NO POWER SUPPLY........................................................
•
PARENTAL CONTROL - RATING LEVEL ...........................................................................
•
ABOUT LEAD FREE SOLDER (PbF) ..................................................................................
•
GENERAL SPECIFICATIONS..............................................................................................
•
DISASSEMBLY INSTRUCTIONS ........................................................................................
•
SERVICE MODE LIST..........................................................................................................
•
SERVICING FIXTURES AND TOOLS .................................................................................
•
RE-WRITE FOR DVD FIRMWARE ......................................................................................
•
RE-WRITE FOR DIGITAL SOFT FIRMWARE .....................................................................
•
WHEN REPLACING EEPROM (MEMORY) IC ....................................................................
•
ELECTRICAL ADJUSTMENTS ............................................................................................
•
TROUBLESHOOTING GUIDE .............................................................................................
•
BLOCK DIAGRAM ................................................................................................................
•
PRINTED CIRCUIT BOARDS ..............................................................................................
•
SCHEMATIC DIAGRAMS ....................................................................................................
•
WAVEFORMS ......................................................................................................................
•
MECHANICAL EXPLODED VIEWS .....................................................................................
•
DVD DECK EXPLODED VIEWS ..........................................................................................
•
REPLACEMENT PARTS LIST .............................................................................................
•
LC-20DV20U
Page
A1-1
A1-2
A1-3~A1-5
A1-6
A1-7
A1-7
A1-8
A2-1~A2-5
B1-1~B3-2
C-1
C-2
C-2
C-3
C-4
D-1~D-3
E-1~E-12
F-1~F-14
G-1~G-14
H-1~H-66
I-1~I-4
J1-1~J1-3
J2-1
K1-1~K3-12
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
CAUTION
THIS
LCD COLOR TELEVISION
TO ENSURE PROPER USE OF THIS PRODUCT, PLEASE READ THIS SERVICE MANUAL CAREFULLY AND RETAIN FOR FUTURE REFERENCE. SHOULD THE UNIT REQUIRE MAINTENANCE,
CONTACT AN AUTHORIZED SERVICE LOCATION-SEE SERVICE PROCEDURE.
USE OF CONTROLS, ADJUSTMENTS OR THE PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MA Y RESULT IN HAZARDOUS RADIATION EXPOSURE.
TO PREVENT DIRECT EXPOSURE TO LASER BEAM, DO NOT TRY TO OPEN THE ENCLOSURE.
VISIBLE LASER RADIA TION MAY BE PRESENT WHEN THE ENCLOSURE IS OPENED. DO NOT
ST ARE INTO BEAM.
Location of the required Marking
The rating sheet and the safety caution are on the rear of the unit.
EMPLOYS A LASER SYSTEM.
CERTIFICATION: COMPLIES WITH FDA
RADIA TION PERFORMANCE STANDARDS,
21 CFR SUBCHAPTER J.
PREPARATION OF SERVICING
The laser diode used for a pickup head may be destroyed with external static electricity.
Moreover, even if it is operating normally after repair, when static electricity discharge is received at the
time of repair, the life of the product may be shortened.
Please perform the following measure against static electricity, be careful of destruction of a laser diode
at the time of repair.
• Place the unit on a workstation equipped to protect against static electricity, such as conductive mat.
• Soldering iron with ground wire or ceramic type is used.
• A worker needs to use a ground conductive wrist strap for body.
A1-1
IMPORTANT SERVICE SAFETY INFORMATION
Safety precautions to be followed during servicing:
1.
Parts marked with an are critical parts for safety. Replace only with the one described in the parts
list.
2.
Before returning the DVD product to the customer, make the appropriate leakage current check or
resistance measurements to ensure that exposed parts are properly insulated from the supply circuit.
A leakage current check is recommended for this unit. Plug the AC line cord directly into a 120V 60Hz AC
outlet (do not use an isolation transformer for this check). Use a leakage current tester (Fig. 1) or a
metering system which complies with Underwriters Laboratories (UL 1492P). Measure for current from all
exposed metal parts of the cabinet to a known earth ground: particularly, any exposed metal part having a
return path to the chassis. Any current measured must not exceed 0.5mA. Any measurement not within
the limits outlined above are indicative of a potential shock hazard and corrective action must be taken
before returning the unit to the customer.
(Reading should not be above 0.5mA)
Leakage Current Tester
PRODUCT UNDER TEST
1.5K ohm
0.15 µF
2-Blade polarized
type cord set
Test all exposed
metal surfaces
TEST PROBE
Fig. 1 AC Leakage Test
KNOWN EARTH
GROUND
A1-2
IMPORTANT SAFEGUARDS
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.
10) Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
13) Unplug this apparatus during lightning storms or when unused for long
periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when
the apparatus has been damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.
15) Apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such a vases,
shall be placed on the apparatus.
16) An outside antenna system should not be located in the vicinity of overhead power lines or other electric
light or power circuits, or where it can fall into such power lines or circuits. When installing an outside
antenna system, extreme care should be taken to keep from touching such power lines or circuits, as
contact with them might be fatal.
17) Do not overload wall outlets and extension cords, as this can result in a risk of fire or electric shock.
18) Do not push objects through any openings in this unit, as they may touch dangerous voltage points or short
out parts that could result in fire or electric shock. Never spill or spray any type of liquid into the unit.
PORTABLE CART WARNING
(symbol provided by RETAC)
S3126A
A1-3
IMPORTANT SAFEGUARDS (CONTINUED)
19) If an outside antenna or cable system is connected to the unit, be sure the antenna or cable system is
grounded to provide some protection against voltage surges and built-up static charges, Section 810 of the
National Electrical Code, ANSI/NFPA 70, provides information with respect to proper grounding of the mast
and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding
conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for
the grounding electrode.
EXAMPLE OF ANTENNA GROUNDING AS PER THE
NATIONAL ELECTRICAL CODE
ANTENNA LEAD
IN WIRE
GROUND
CLAMP
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
ELECTRIC SERVICE
EQUIPMENT
GROUND CLAMPS
NEC-NATIONAL ELECTRICAL CODE
S2898A
20) When replacement parts are required, be sure the service technician uses replacement parts specified by
the manufacturer or those that have the same characteristics as the original part.
Unauthorized substitutions may result in fire, electric shock or other hazards.
21) Upon completion of any service or repairs to this unit, ask the service technician to perform safety checks to
determine that the unit is in proper operating condition.
22) Keep your fingers clear of the disc slot as it is closing. It may cause injury.
23) When you connect the product to other equipment, turn off the power and unplug all of the equipment from
the wall outlet. Failure to do so may cause an electric shock and serious personal injury. Read the owner's
manual of the other equipment carefully and follow the instructions when making any connections.
24) Reduce the volume to the minimum level before you turn on the product. Otherwise, sudden high volume
sound may cause hearing or speaker damage.
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
A1-4
IMPORTANT SAFEGUARDS (CONTINUED)
25) Do not allow the product to output distorted sound for an extended period of time. It may cause speaker
overheating and fire.
26) When you use the headphones, keep the volume at a moderate level. If you use the headphones continuously with high volume sound, it may cause hearing damage.
27) Do not look into the opening of the disc slot or ventilation opening of the product to see the source of the
laser beam. It may cause eye damage.
28) Do not use a cracked, deformed, or repaired disc. These discs are easily broken and may cause serious
personal injury and product malfunction.
29) This reminder is provided to call the cable TV system installer’s attention to Article 820-40 of the NEC that
provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.
CONDENSATION
Moisture will form in the operating section of the player if the player is brought from cool surroundings into a
warm room or if the temperature of the room rises suddenly. When this happens, player's performance will
be impaired.
To prevent this, let the player stand in its new surroundings for about an hour before switching it on, or
make sure that the room temperature rises gradually.
Condensation may also form during the summer if the player is exposed to the breeze from an air conditioner. In such cases, change the location of the player.
HOW TO HANDLE THE LCD PANEL
• Do not press hard or jolt the LCD panel. It may cause the LCD panel glass to break and injury may occur.
• If the LCD panel is broken, make absolutely sure that you do not touch the liquid in the panel. This may cause
skin inflammation.
If the liquid gets in your mouth, immediately gargle and consult with your doctor. Also, if the liquid gets in
your eyes or touches your skin, consult with your doctor after rinsing for at least 15 minutes or longer in clean
water.
A1-5
WHEN REPLACING DVD DECK
[ When removing the DVD Deck ]
Before removing Pick Up PCB and DVD PCB connector, the short circuit the position shown in Fig. 1
using a soldering iron. If you remove the DVD Deck with no soldering, the Laser may be damaged.
[ When installing the DVD Deck ]
Remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD
PCB connector.
NOTE
Before your operation, please read “PREPARATION OF SERVICING”.
•
Use the Lead Free solder.
•
Manual soldering conditions
•
• Soldering temperature: 350 ± 5˚C
• Soldering time: Within 2 seconds
• Soldering combination: Sn-3.0Ag-0.5Cu
When Soldering/Removing of solder, use the draw in equipment over the Pick Up Unit to keep the
•
Flux smoke away from it.
Pick Up PCB
Fig. 1
Short circuit using a
soldering iron.
A1-6
DISC REMOVAL METHOD AT NO POWER SUPPLY
1.
Remove the Back Cabinet and Angle Deck. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)
2.
Slide the Belt Loading toward the arrow direction by hand to release the lock. (Refer to Fig. 1)
3.
Take out the Disc from the DVD Deck. Be careful not to scratch on the Disc.
DVD Deck
Belt Loading
Fig. 1
PARENTAL CONTROL - RATING LEVEL
4 DIGIT PASSWORD CANCELLATION
If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below.
Turn Unit ON.
1.
Set the DVD to the Stop Mode.
2.
Check that ‘No disc’ is displayed on the screen.
3.
Press and hold the ‘STOP’ button on the front panel.
4.
Simultaneously press and hold the ‘7’ key on the remote control unit.
5.
Hold both keys for more than 2 seconds.
6.
The On Screen Display message ‘PASSWORD CLEAR’ will appear.
7.
The 4 digit password has now been cleared.
8.
A1-7
GENERAL SPECIFICATIONS
G-1 TV LCD LCD Size / Visual Size 20.04 inch / 508.9mmV
G-2 DVD System Color System NTSC
G-3 Tuning Broadcasting System US System M
G-4 Signal Video Signal Input Level 1 V p-p/75 ohm
G-5 Power Power Source AC 120V, 60Hz
G-6 Regulation Safety UL/CSA/NOM
G-7 Temperature Operation +5oC ~ +40oC
G-8 Operating Humidity Less than 80% RH
G-9 Clock and Clock Yes
System LCD Type Color TFT LCD
Number of Pixels 1366(H) x 768(V)
View Range Left/Right 88/88 degree
Up/Down 88/88 degree
Color System NTSC
Speaker 2 Speaker
Position Front
Size 1.8 x 3.9 inch
Impedance 8 ohm
Sound Output Max 2.5W + 2.5W
10%(Typical) ---
Disc DVD, CD-DA, CD-R/RW
DVD-R/RW (Video Format Only)
Disc Diameter 120 mm , 80 mm
Drive DSM-2
Search speed Fwd 4 step
Actual 2-45 times (DVD)
4-40 times (CD)
Rev 4 step
Actual 2-45 times (DVD)
4-40 times (CD)
Slow speed Fwd 1/7 -1/2 times
Actual --
Rev 1/7 -1/2 times
Actual --
System Tuner and System 1Tuner
Receive CH Destination US (W/CABLE)
CH Coverage 2~69, 4A, A-5~A-1, A~I, J~W, W+1~W+84
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
FP-FS 4.50MHz
Preset CH No
Stereo/Dual TV Sound US-Stereo
Tuner Sound Muting Yes
Output Level --
S/N Ratio (Weighted) --
Horizontal Resolution at DVD Mode --
-RGB Signal Output Level -Audio Signal Input Level 0.85 V p-p/50k ohm
Output Level at DVD --
at TV -Digital Output Level 0.5 V p-p/75 ohm
S/N Ratio at DVD (Weighted) -Harmonic Distortion -Frequency Response : at DVD --
at Video CD --
at SVCD --
at CD --
DC --
Power Consumption at AC 90W at 120V 60Hz
at DC -Stand by (at AC) 1W at 120V 60Hz
Energy Star Yes
Per Year -- kWh/Year
Protector Power Fuse Yes
Safety Circuit Yes
IC Protector(Micro Fuse) Yes
Radiation FCC/IC
Laser DHHS
Storage -20oC ~ +60oC
Timer Sleep Timer Max Time 120 Min
Step 10 Min
On Timer Program No
Off Timer Program No
Game Timer No
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
A2-1
GENERAL SPECIFICATIONS
G-10 Remote Unit RC-MR
Control Glow in Dark Remocon No
Remocon Format SHARP
Format TV:SHARP, DVD:KASEIKYO
Custom Code TV:SHARP 15bit, DVD:KASEIKYO 48bit
Power Source Voltage(D.C) 3V
Total Keys 47 Keys
Keys
UM size x pcs UM-3 x 2 pcs
POWER
DISPLAY
SLEEP
VIEW MODE
INPUT SELECT
1
2
3
4
5
6
7
8
9
0
MUTE
AUDIO
VOL+
VOLCH+
CHLEFT/SLOWENTER
RIGHT/SLOW+
UP
DOWN
SETUP/TV MENU
EXIT/CANCEL
RETURN
SUBTITLE
TV/DVD
OPEN/CLOSE(EJECT)
FWD(SEARCH+)
REV(SEARCH-)
SKIP+
SKIPPAUSE/STILL
PLAY
STOP
PLAY MODE
ANGLE
ZOOM
DVD MENU
TOP MENU
REPAT A-B
MARKER
DIRECT SKIP(JUMP)
FREEZE
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
A2-2
GENERAL SPECIFICATIONS
G-11 Features Auto Shut Off Yes
(TV) Auto Search No
Power On Memory Yes
Comb Filter Yes
Game Position No
Auto Setup(Language/CH Program) No
Picture Setting(TV) Yes
AV Mode(Picture Preference) Yes
Brightness , Contrast , Color Yes
Tint Yes
Sharpness Yes
Color Temperature Yes
Cable Clear No
Picture Setting(PC) Yes
BRIGHTNESS , CONTRAST Yes
HOR POSITION , VER POSITION Yes
PHASE , CLOCK Yes
AUTO ADJUST No
RED , GREEN , BLUE Yes
Audio MTS Yes
Tone Control (Bass/Treble/Balance) Yes
Stable Sound No
Surround Yes
BBE No
SRS WOW (SRS 3D/Focus/Tru Bass) No
Variable Audio Out No
Tuning CH Program Yes
Air/Cable Yes
ADD/DELETE Yes
Label CH Label Yes
Video Label Yes
Favorite CH No
V-Chip Yes
Type USA Type
RRT Setup
Lock Hotel Lock No
Channel Lock No
Video Lock No
Panel Lock No
OSD Language
Closed Caption
CC Advanced
View Mode (Picture Size) Yes(SIDE BAR/S.STRETCH/ZOOM/STRETCH)
Picture Scroll Yes
Cinema Mode Yes
Aspect Yes
Backlight Yes
PFC(Power Factor circuit)
Freeze frame No
PIP/POP No
Direct Input Selection Yes
PC Monitor Input Yes
VGA (640x480) Yes (60Hz)
VGA (720x400) Yes (70Hz)
WVGA (848x480) Yes (60Hz)
SVGA (800x600) Yes (60Hz)
XGA (1024x768) Yes (60Hz)
WXGA (1280x768) Yes (60Hz)
WXGA (1280x720) Yes (60Hz)
WXGA (1360x768) Yes (60Hz)
SXGA (1280x1024) No
HDMI Input Yes
VGA (640x480) Yes (60Hz)
720x480i (4:3) Yes (60Hz)
720x480i (16:9) Yes (60Hz)
720x480p (4:3) Yes (60Hz)
720x480p (16:9) Yes (60Hz)
720x576i (4:3) No
720x576i (16:9) No
720x576p (4:3) No
720x576p (16:9) No
1280x720p Yes (60Hz)
1920x1080i Yes (60Hz)
3 -D
English French Spanish
Yes
No
No
No
A2-3
GENERAL SPECIFICATIONS
Component Input Yes
Features Tray Lock No
(DVD) Video CD Playback No
SVCD Playback
MP3 Playback Yes
Divx Playback No
JPEG Yes
WMA Yes
Digital Out (Dolby Digital) Yes
Down Mix Out (Dolby Digital) Yes
Closed Caption Yes
Screen Saver No
Audio DAC 192kHz / 24bit
G-12 Accessories Owner's Manual Language English/French/Spanish
Remote Control Unit Yes
Rod Antenna
Loop Antenna
U/V Mixer
DC Car Cord (Center+)
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Facility List
Important Safeguard
Dew/AHC Caution Sheet
Quick Set-up Sheet
Battery Yes
AC Adapter
AC Cord (for AC Adapter)
AV Cord (2Pin-1Pin)
Registration Card (NDL Card) Yes
300ohm to 75ohm Antenna Adapter
Sheet Information (Return)
Sheet Information (HDMI) No
Screw for wall hanging No
720x480i (4:3) Yes (60Hz)
720x480i (16:9) Yes (60Hz)
720x480p (4:3) Yes (60Hz)
720x480p (16:9) Yes (60Hz)
720x576i (4:3) No
720x576i (16:9) No
720x576p (4:3) No
720x576p (16:9) No
1280x720p Yes (60Hz)
1920x1080i Yes (60Hz)
No
Overlay Graphics And Text No
Command List No
Entry Point Jump No
DMF Support No
(MPEG) Yes
(PCM) Yes
(DTS) Yes
(DTS) No
w/Guarantee Card Yes
No
Poles -Terminal --
No
Terminal --
No
No
No
No
No
No
No
No
No
No
UM size x pcs UM-3 x 2 pcs
OEM Brand No
No
No
No
No
No
A2-4
GENERAL SPECIFICATIONS
G-13 Interface Switch Top Power (Tact) Yes
Indicator Power / Stand-by Yes(GREEN / RED)
Terminals Rear Video Input 1 RCA x 1
Side Video Input 2 No
G-14 Set Size Approx. W x D x H (mm) 553 x 228 x 448
G-15 Weight Net (Approx.) 9.2kg (20.3 lbs)
G-16 Carton Master Carton No
Gift Box Material Double/White
Drop Test 1 Corner / 3 Edges / 6 Surfaces
Container Stuffing (40' container) 492
G-17 Material Cabinet Front PS 94V0 NON-DECABROM
PCB Non-Halogen Demand No
G-18 Environment Environmental standard requirement (by buyer) Green PROCUREMENT of SHARP
Pb-Free Phase 3 (Phase 3A)
Channel Up/Menu Up Yes
Channel Down/Menu Down Yes
Volume Up/Menu > Yes
Volume Down/Menu < Yes
Menu Yes
Play Yes
Eject Yes
Skip+, Search+ Yes
Skip-, Search- Yes
Still/Pause No
Stop Yes
Main Power SW No
Input Select Yes
Power No
Stand-by No
On Timer No
Audio Input 1
S - Input 1
Video Input 2 RCA x 1
Audio Input 2
S- Input 2 No
Video Output No
Audio Output No
Component Input
Analog Audio RCA x 2(L/MONO, R)
HDMI Input
Analog Audio PC Monitor Audio Input Alternative
PC Monitor Input
Analog Audio RCA x 2(L/MONO, R)
Digital Audio Output Coaxial (DVD Only)
DC Jack No
VHF/UHF Antenna Input
Other Terminal
AC Outlet No
Audio Input 2 No
PC Monitor Input(w/ Analog Audio L/R) No
Other Terminal No
w/o Handle, Stand Approx. W x D x H (mm)
Net w/o Handle, Stand (Approx.) 7.9kg (17.5 lbs)
Gross (Approx.) 11.5kg (25.4 lbs)
Content --- Sets
Material --- / --Dimensions W x D x H(mm) --Description of Origin ---
W/Color Photo Label No
W/Handle No
Dimensions W x D x H(mm) 654 x 338 x 565
Description of Origin Yes
Height (cm) 62
Rear PS 94V0 NON-DECABROM
Eyelet Demand Yes
Measures for Whisker Yes
RCA x 2(L/MONO, R)
Yes
RCA x 2(L/MONO, R)
RCA x 3
HDMI x 1
Dsub15pin x 1
F Type
Headphone
553 x 110 x 403
Sets
A2-5
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1.2.Remove the 19 screws 1.
Remove the Back Cabinet in the direction of arrow.
1
1
1
1
1
1
1
1
1-2:
STAND ASS'Y/ANGLE BACK 1/2/PLATE JACK 1/2
(Refer to Fig. 1-2)
1.
Remove the 4 screws 1.
2.
Remove the Stand Ass'y in the direction of arrow (A).
3.
Remove the 4 screws 2.
4.
Remove the 6 screws 3.
5.
Remove the Angle Back 1/2 in the direction of arrow (B).
6.
Remove the 4 screws 4.
7.
Remove the Plate Jack 2 in the direction of arrow (C).
8.
Remove the 11 screws 5.
9.
Remove the Plate Jack 1 and Shield Jack in the direction
of arrow (D).
2
2
3
3
Angle Back 1
(B)
1
1
2
2
3
3
3
Plate Jack 2
(C)
1
1
1
Back Cabinet
3
4
(A)
1
1
Angle Back 2
1
4
1
1
1
1
Fig. 1-1
1
1
1
Stand Ass'y
5
5
5
5
1-3: PCB ASS'Y (Refer to Fig. 1-3)
1.
Disconnect the following connectors:
(CP506, CP507, CP508, CP510, CP511, CP512).
2.
Remove the 9 screws 1.
3.
Remove the Holder AC-Inlet and Power PCB in the
direction of arrow (A).
4.
Disconnect the following connectors:
(CP802, CP803, CP2200, CP3201, CP3602, CP7203).
5.
Remove the 10 screws 2.
6.
Remove the Shield Scaler and Scaler PCB in the
direction of arrow (B).
7.
Disconnect the following connectors:
(CP301, CP303, CP2403, CP2404, CP4202).
8.
Remove the 6 screws 3.
9.
Remove the DigitalPCB and AV PCB in the direction of
arrow (C).
10.
Remove the 2 screws 4.
11.
Remove the Remocon PCB in the direction of arrow (D).
12.
Remove the 8 screws 5.
13.
Remove the Plate Button, Operation PCB and Operation
2 PCB in the direction of arrow (E).
2
2
Holder AC-Inlet
1
1
1
1
Power PCB
Operation 2 PCB
5
Plate Button
(E)
(A)
1
1
1
5
5
2
2
2
2
1
1
5
5
5
Operation PCB
2
Shield Scaler
2
2
Scaler PCB
2
3
(B)
5
5
(C)
Digital PCB
3
3
3
3
AV PCB
3
4
4
Remocon PCB
(D)
Fig. 1-3
(D)
Plate Jack 1
Shield Jack
Fig. 1-2
B1-1
DISASSEMBLY INSTRUCTIONS
1-4: DVD MT PCB/DVD DECK (Refer to Fig. 1-4)
1.
Short circuit the position shown in Fig. 1-4 using a
soldering iron. If you remove the DVD Deck with no
soldering, the Laser may be damaged.
2.
Disconnect the following connectors:
(CP2301, CP2302 and CP2303).
3.
Remove the 4 screws 1.
4.
Remove the Shield MPEG, Shield FCC and DVD MT
PCB in the direction of arrow (A).
5.
Remove the 4 screws 2.
6.
Remove the DVD Deck in the direction of arrow (A).
7.
Remove the 2 screws 3.
8.
Remove the Angle Deck-R in the direction of arrow (B).
9.
Remove the 2 screws 4.
10.
Remove the Angle Deck-L in the direction of arrow (C).
Short circuit using a
soldering iron.
2
Pick Up PCB
Angle Deck-R
SHIELD MPEG
4
3
2
2
(B)
DVD Deck
1
1
1
2
(C)
4
Angle Deck-L
3
1
1-5: LCD COVER/LCD PANEL (Refer to Fig. 1-5)
1.
Remove the 8 screws 1.
2.
Remove the LCD Cover in the direction of arrow (A).
3.
Remove the 4 screws 2.
4.
Remove the LCD Panel in the direction of arrow (B).
1
1
2
1
(B)
1
2
1
1
LCD Cover
LCD Panel
1
2
Front Cabinet
2
1
(A)
DVD MT PCB
SHIELD FCC
(A)
Fig. 1-4
NOTE
Before your operation, please read “PREPARATION OF
1.
SERVICING”.
Use the Lead Free solder.
2.
Manual soldering conditions
3.
• Soldering temperature: 350 ± 5˚C
• Soldering time: Within 2 seconds
• Soldering combination: Sn-3.0Ag-0.5Cu
When Soldering/Removing of solder, use the drawing
4.
equipment over the Pick Up Unit to keep the Flux smoke
away from it.
When installing the DVD Deck, remove all the soldering on
5.
the short circuit position after the connection of Pick Up
PCB and DVD PCB connector.
Fig. 1-4
B1-2
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DVD DECK PARTS
NOTE
1. Disassemble only the DVD DECK PARTS parts listed
here. Minute adjustments are needed if the
disassembly is done. If the repair is needed except
listed parts, replace the DVD MECHA ASS'Y.
2-1: TRAVERSE ASS'Y (Refer to Fig. 2-1-A)
Remove the 3 screws 1.
1.
Unlock the 2 supports 2.
2.
Remove the Insulator (R) from the Loader Sub Ass'y.
3.
Remove the Traverse Ass'y.
4.
2
Loader Sub Ass'y
2
2-2:
SWITCH PCB ASS'Y/GEAR MIDDLE/GEAR FEED/RACK
FEED ASS'Y/FEED MOTOR (Refer to Fig. 2-2-A)
Remove the Insulator (F).
1.
Remove the Insulator (R).
2.
Unlock the support 1.
3.
Remove the Gear Middle.
4.
Remove the screw 2.
5.
Remove the Rack Feed Ass'y.
6.
Remove the screw 3.
7.
Remove the Switch PCB Ass'y.
8.
Remove the screw 4.
9.
Remove the Gear Feed.
10.
Remove the 2 screws 5.
11.
Remove the Feed Motor.
12.
Remove the Gear Motor.
13.
Feed Motor
Traverse Ass'y
Gear Motor
Insulator (R)
Insulator (R)
Traverse Ass'y
1
• Screw Torque: 2.0 ± 0.3kgf•cm
1
1
Fig. 2-1-A
NOTE
1. In case of the Traverse Ass'y installation, hook the wire
on the Loader Ass'y as shown Fig. 2-2-B to Fig. 2-2-D.
Loader Ass'y (Bottom Side)
Check Lock Check Lock
Check Hook
40 ± 5mm
Loader Ass'y
Fig. 2-1-B
Check Hook
Fig. 2-1-C
Insulator (F)
5
1
5
Gear Feed
Insulator (F)
Rack Feed Ass'y
• Screw Torque: 1.3 ± 0.3kgf•cm (Screw 2)
• Screw Torque: 3.0 ± 0.3kgf•cm (Screw 3)
• Screw Torque: 1.0 ± 0.3kgf•cm (Screw 4, 5)
4
Gear Middle
2
Switch PCB Ass'y
3
Fig. 2-2-A
NOTE
1.
When installing the Rack Feed Ass'y, push both ends to
align the teeth as shown Fig. 2-2-B. Then install it.
2.
In case of the Gear Motor installation, check if the value
of the Fig. 2-2-C is correct.
3.
When installing the wire of the Switch PCB Ass'y, install
it correctly as Fig. 2-2-D.
Manual soldering conditions
• Soldering temperature: 350 ± 5˚C
• Soldering time: Within 4 seconds
• Soldering combination: Sn-3.0Ag-0.5Cu
4.
After the assembly of the Traverse Ass'y, hook the wire
on the Traverse Ass'y as shown Fig. 2-2-E.
Rack Feed Ass'y
Check Hook
Loader Ass'y (Top Side)
Check Hook
Fig. 2-1-D
B2-1
Push
Push
[OK] [NG]
Fig. 2-2-B
DISASSEMBLY INSTRUCTIONS
Feed Motor
Check Hook
Gear Motor
Safety surface for pressing
of the insert.
Switch PCB Ass'y
~ SPINDLE MOTOR ~
YELLOW (2)
GREEN (1)
Traverse Ass'y
8.0 ± 0.2mm
Fig. 2-2-C
~ FEED MOTOR ~
WHITE (4)
BROWN (3)
• Install wire from (1) to (4) in order.
Fig. 2-2-D
[ 6 pin FFC ]
40 ± 1mm
Fold
Fold
60 ± 1mm
Fig. 2-3-B
Check Hook
Check Hook
Check Hook
• Loosen the wire in the direction of the arrow.
Fig. 2-2-E
2-3: FFC WIRE HANDLING
1.
When installing the FFC, fold it correctly and install it as
shown from Fig. 2-3-A to Fig. 2-3-B.
NOTE
Do not make the folding lines except the specified
1.
positions for the FFC.
[ 24 pin FFC ]
Fold it by 90˚
To Pick Up PCB
Printing Surface
60 ± 1mm
Fig. 2-3-A
B2-2
DISASSEMBLY INSTRUCTIONS
3.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put Masking Tape (cotton tape) around the Flat Package
1.
IC to protect other parts from any damage.
(Refer to Fig. 3-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
When IC starts moving back and forth easily after
3.
desoldering completely, pickup the corner of the IC using
tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 3-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 3-2.)
NOTE
Do not rotate or move the IC back and forth , until IC
can move back and forth easily after desoldering the
leads completely.
Blower type IC
desoldering machine
Fig. 3-1
Tweezers
IC
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
5.
Shield Wire. (Refer to Fig. 3-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 3-3
Braided Shield Wire
Soldering Iron
IC
Fig. 3-2
IC pattern
Fig. 3-4
B3-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the
1.
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 3-5.)
Soldering Iron
Solder temporarily
Supply the solder from the upper position of IC leads
2.
Solder temporarily
sliding to the lower position of the IC leads.
(Refer to Fig. 3-6.)
Fig. 3-5
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 3-8.)
Thin-tip Soldering Iron
IC
Fig. 3-8
Finally, confirm the soldering status on four sides of the
5.
IC using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the
IC. If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, always be sure to replace the IC in this
case.
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided
3.
Supply soldering
from upper position
to lower position
Shield Wire. (Refer to Fig. 3-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 3-6
Fig. 3-7
B3-2
SERVICE MODE LIST
This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit and on the remote
control for more than the standard time in the appropriate condition. (See below chart.)
Set
Condition
TV mode
TV mode
DVD mode
(No disc)
DVD mode
(No disc)
TV mode
TV mode
ALL mode
DVD mode
(No disc)
Set Key
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
Remocon
Key
0 2 sec.
1 2 sec.
4 2 sec.
5 2 sec.
6 2 sec.
8
9 2 sec.
Standard
Time
2 sec.
Operations
Releasing of V-CHIP PASSWORD.
Initialization of factory TV data.
NOTE:
Initialization of factory DVD data.
NOTE: Do not use this for normal servicing.
DVD Write mode.
Refer to the “RE-WRITE FOR DVD FIRMWARE”.
POWER ON total hours are displayed on the screen.
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Check of the SUM DATA, POWER ON total hours, MICON
VERSION and DIGITAL TV MICON FIRMWARE on the screen.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display
Adjustment).
Refer to the “RE-WRITE FOR DVD FIRMWARE”.STOP 1 2 sec.
DVD
If you set factory initialization, the memories are reset such
as the channel setting, and the POWER ON total hours.
DVD mode
(No disc)
STOP 7 2 sec.
Releasing of PARENTAL LOCK.
Refer to the “PARENTAL CONTROL - RATING LEVEL”.
C-1
SERVICING FIXTURES AND TOOLS
JG176 Up-Date Disc
Ref. No.
JG176
JG176
Part No.
APJG176104
JG176 USA HD DTV ROM
DISC
Parts Name
Up-Date Disc
USA HD DTV ROM
DISC
Remarks
Up-Date of the DVD Firmware
Up-Date of the DIGITAL FirmwareAPJG176096
RE-WRITE FOR DVD FIRMWARE
Turn on the power, and set the DVD mode.
1.
Press both VOL. DOWN button on the set and Channel button (5) on the remote control for more than 2 seconds.
2.
Press VOL. UP/DOWN button on the unit to check if all the keys on the unit do not function.
3.
NOTE: To check if DVD Write mode is set.
When inserting Up-Date Disc at Non DVD Write mode, the read error will happen.
Insert the Up-Date Disc. (Refer to SERVICING FIXTURE AND TOOLS)
4.
Automatic read will start and "Erase and Program Do Not Power Off" will be displayed on the screen.
5.
At this time, the horizontal noise lines may appear. But no problem.
NOTE: Do not turn off the unit on the way or operate the keys on the unit and remocon.
Up-Date error will happen and can not be done with the Up-Date of Up-Date Disc.
After the Up-Date, Logo screen will appear.
6.
Unplug the AC cord, then plug it in.
7.
After the write, set to the initializing of shipping.
Turn on the power, and set the DVD mode.
8.
Press both VOL. DOWN button on the set and Channel button (4) on the remote control for more than 2 seconds.
9.
The "INITIALIZE 5 ---> COMPLETE" will appear on the screen.
Then unplug the AC cord, and plug it in.
10.
CHECK FOR THE FIRMWARE VERSION
Turn on the power, and set the DVD mode.
11.
Press both Channel button (1) on the remote control and the STOP button on the set for more than 2 seconds.
12.
Firmware version will be displayed on the top left of the screen.
F/W Ver. 2LA6307A
Initialize: Complete
Laser Drive time
DVD LD: 0 Hour
CD LD: 0 Hour
2 L A 6 3 0 7 A
Fixed
Release date (Example: 2006.3.7)
Released times on the same date
Turn off the power
13.
When the changed version displays, the Re-write will be completed.
C-2
A = October
B = November
C = December
RE-WRITE FOR DIGITAL SOFT FIRMWARE
Prepare the following tools for Up-Date of the Firmware.
1 Computer of WINDOWS2000
2 USB Flash Memory (Use only SanDisk Cruzer Mini USB Flash Drive 256Mb)
SET (REAR)
USB CONNECTOR
NOTE: The operating manual for Re-writing is included in USA HD DTV ROM DISC (JG176).
C-3
WHEN REPLACING EEPROM (MEMORY) IC
CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS, MICON VERSION AND
DIGITAL TV MICON FIRMWARE
Initial total of MEMORY IC, POWER ON total hours, MICON VERSION and Digital TV MICON Firmware can be checked on
the screen. Total hours are displayed in 16 system of notation.
NOTE:
1.
2.
3.
4.
If you set a factory initialization, the total hours is reset to "0".
Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
Turn on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
INIT : C7C3
Press both VOL. DOWN button on the set and Channel
button (8) on the remote control for more than 2 seconds.
ROM : 0000
After the confirmation of each check sum, POWER ON
total hours, MICON VERSION and Digital TV MICON
Firmware, turn off the power.
*1 DVP1 is different according to each set.
ADC : 8F97
DVP1 : F5F5 *1
DVP2 : 29EF
Initial setting data check sum.
Rom correction data check sum.
AD CONVERTER data check sum.
SCALER data check sum.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
MICON Version
Digital TV MICON Firmware
LCD ON 0000
OEC7155B_006
DTV d0l63041
FIG. 1
CONFIRMATION OF INITIAL DATA
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to INITIAL SETTING TABLE (Attached "INITIAL DATA").
Turn on the POWER, and set to the TV mode.
1.
Set the VOLUME to minimum.
2.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
3.
ADDRESS and DATA should appear as FIG 2.
ADDRESS DATA
INIT 0000 00
LCD ON 0000
OEC7155B_006
DTV d0l63041
FIG. 2
ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS
4.
until required ADDRESS to be changed is reached.
Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".
5.
Again, step through the DATA using UP/DOWN button until required DATA value has been selected.
6.
Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
7.
Repeat steps 4 to 6 until all data has been checked.
8.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
9.
After the data input, set to the initializing of shipping.
Turn POWER on.
10.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
11.
After the finishing of the initializing of shipping, the unit will turn off automatically.
12.
The unit will now have the correct DATA for the new MEMORY IC.
C-4
ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any
service on this chassis.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
•
When you exchange IC and Transistor with a heat sink,
apply silicon grease (YG6260M) on the contact section of
the heat sink. Before applying new silicon grease,
remove all the old silicon grease. (Old grease may cause
damage to the IC and Transistor).
Prepare the following measurement tools for electrical
adjustments.
1. Pattern Generator
2. BASIC ADJUSTMENTS
On-Screen Display Adjustment
1.2.Set the VOLUME to minimum.
Press the VOL. DOWN button on the set and the
channel button (9) on the remote control for more than
2 seconds to display adjustment mode on the screen as
shown in Fig. 2-1.
TV
01 H POSI OSD
3.
Use the UP/DOWN button or Channel button (0-9) on
the remote control to select the options shown in
Fig. 2-2.
4.
Press the MENU button on the remote control to end
the adjustments.
5.
To display the adjustment screen for AV, YUV, HDMI
mode, press the INPUT button on the remote control to
set to the AV, YUV, HDMI. To display the adjustment
screen for DVD mode, press the TV/DVD button on the
remote control to set to the DVD. Press the VOL.DOWN
button on the set and the channel (9) on the remote
control for more than 2 seconds.
346
Fig. 2-1
NO.
FUNCTION
NO.
H POSI OSD
01
V POSI OSD
02
R DRIVE (N)
03
R CUTOFF (N)
04
G DRIVE (N)
05
G CUTOFF (N)
06
B DRIVE (N)
07
B CUTOFF (N)
08
R DRIVE (C)
09
R CUTOFF (C)
10
G DRIVE (C)
11
G CUTOFF (C)
12
B DRIVE (C)
13
B CUTOFF (C)
14
R DRIVE (W)
15
R CUTOFF (W)
16
G DRIVE (W)
17
G CUTOFF (W)
18
B DRIVE (W)
19
B CUTOFF (W)
20
FUNCTION
22
H POSI 60Hz
24
V POSI 60Hz
25
BAK LIGHT CENT
26
BAK LIGHT MAX
27
BAK LIGHT MIN
28
BRIGHT CENT
29
BRIGHT MAX
30
BRIGHT MIN
31
TINT
35
CONTRAST CENTER
36
CONTRAST MAX
37
CONTRAST MIN
38
COLOR CENT
39
COLOR MAX
40
COLOR MIN
63
CONTRAST 40
64
BRIGHT (3F54)
65
CONTRAST (3F55)
66
SRC TOP
67
DFEA VIMGVT
Fig. 2-2
2-1: WHITE BALANCE
1.
Place the set in Aging Test for more than 15 minutes.
2.
Receive the gray scale pattern from the Pattern
Generator.
3.
Press the INPUT button on the remote control to set to
the AV mode.
4.
Using the remote control, set the brightness and contrast
to normal position.
5.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select “R DRIVE (N)”.
6.
Press the UP/DOWN button on the remote control to
select the “R CUTOFF (N)”, “B DRIVE (N)”, “B CUTOFF
(N)”, “R DRIVE (C)”, “R CUTOFF (C)”, “B DRIVE (C)”, “B
CUTOFF (C)”, “R DRIVE (W)”, “R CUTOFF (W)”, “B
DRIVE (W)” and “B CUTOFF (W)”.
7.
Adjust the RIGHT/LEFT button on the remote control to
whiten the R CUTOFF (N), B DRIVE (N), B CUTOFF (N),
R DRIVE (C), R CUTOFF (C), B DRIVE (C), B CUTOFF
(C), R DRIVE (W), R CUTOFF (W), B DRIVE (W) and B
CUTOFF (W) at each step tone sections equally.
8.
Perform the above adjustments 5 and 6 until the white
color is looked like a white.
D-1
ELECTRICAL ADJUSTMENTS
2-2: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of each of the adjustment items are set correctly referring below. (TV/AV/YUV/HD-MI/DVD)
HD-MIYUV
TV 720p
TV
NO. FUNCTION
1 H POSI OSD 346 346 346 346 346 346 346 346 346 346 346 346 346 346
2 V POSI OSD 83 83 83 83 83 83 83 83 83 83 83 83 83 83
5 G DRIVE (N)
6 G CUTOFF (N)
11 G DRIVE (C)
12 G CUTOFF (C)
17 G DRIVE (W)
18 G CUTOFF (W)
22 H POSI 60Hz
22 H POSI (SIDE BAR)
24 V POSI 60Hz
25 BAK LIGHT CENT
26 BAK LIGHT MAX
27 BAK LIGHT MIN
28 BRIGHT CENT
29 BRIGHT MAX
30 BRIGHT MIN
31 TINT
37 CONTRAST MIN(N)
38 COLOR CENT
39 COLOR MAX
40 COLOR MIN
64 BRIGHT (3F54)
65 CONTRAST (3F55)
66 SRC TOP(STRECH)
66 SRC TOP(SIDE BAR)
66 SRC TOP(CINEMA WIDE1)
66 SRC TOP(ZOOM)
66 SRC TOP(S.STRECH)
67 DEFA VIMGVT(STRECH)
67 DEFA VIMGVT(SIDE BAR)
67 DEFA VIMGVT(CINEMA WIDE1)
67 DEFA VIMGVT(ZOOM)
67 DEFA VIMGVT(S.STRECH) 26 25 26 26 26 56 --- --- 26 56 --- --- 55 26
128 128 128 128 128
128 128 128 128 128
128 128 128 128 128
128 128 128 128 128
128 128 128 128 128
128 128 128 128 128
276 320 276 276 276
284 322 284 284 284 140
23 63 23 23 34
128 128 128 128 128
255 255 255 255 255
00 00 00 00 00 00 00 00 00 00 00 00
126 126 126 126 126 126 126 126 126 126 126 126
156 156 156 156 156 156 156 156 156 156 156 156
70 70 70 70 70 70 70 70 70 70 70 70
108 128 109 116 115
50 50 50 50 50 50 50 50 50
75 115 92 94
127 127 127 127
00 00 00 00
--- 128 --- --- ---
--- 180 --- --- --20 20 20 20 20 20 20 20 20 20 20 20 20 20
20 20 20 20 20 20 --- --- 20 20 --- --- 20 20
18 20 18 18 20 20 --- --- 20 20 --- --- 20 18
43 43 43 43 43 43 --- --- 43 43 --- --- 43 43
26 26 26 26 26 26 --- --- 26 26 --- --- 26 26
20 25 20 20 20 43 26 24 20 44 32 24 42 20
20 25 20 20 20 43 --- --- 20 43 --- --- 42 20
20 28 20 20 20 44 --- --- 20 44 --- --- 42 20
50 28 50 50 50 104 --- --- 50 104 --- --- 102 50
AV AV (S) 480i 480p 720p 1080i 480i 480p 720p 1080i VGA DVD
Step No.
128 128 128 128 128 128 128 128 128
128 128 128 128 128 128 128 128 128
128 128 128
128 128 128
128 128 128
128 128 128
134 322 122
...
... 274 140 ... ... 160
34 55 38
128 128 128
255 255 255
122 122 122 122
83 115 115 115
127 127 127 127
00 00 00 00 00 00 00 00 00 00
126 128 128 113 113 113 113 113 --182 180 180 122 122 122 122
128 128 128 128 128
128
128 128 128 128 128
128
128 128 128 128 128
128
128 128 128 128 128
128
266 134 284 228
35 34 54 38
128 128 128 128
255 255 255 255
132 131 132 132 120
50 50 50 50 50
77 77 77 77 77 91
127 127 127 127 127
127
156 276
34 23
128 128
255 255
00 00
126 126
156 156
70 70
122 ---
284
D-2
ELECTRICAL ADJUSTMENTS
3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
LCD PANEL
DVD MT PCB
DVD DECK
CP509
CP512
CP511
CP510
CP507
CP508
POWER
PCB
CP506
J502
AC IN
CP2303
CP2302
CP2301
CD501
CD702
CD703
REMOCON PCB
CP2201
OS2200
OPERATION 2 PCB
CP2251
CD2251
OPERATION1 PCB
CP2203
SPEAKER
SPEAKER
CP301
CP303
J4201
J4205
J4202
CP4401
AV PCB
CP901
J4211
CP3801
CP3808
J4204
CP3803
CP3807
TU5801
CP4202
CP3802
CP3804
CP4204
CP4203
DIGITAL PCB
D-3
CD4204
CD4203
CP2200
CP4303
CP802
CP803
SCALER PCB
CP7203
J4301
CP3201
CP3602
CP3601
CP3603
POWER DOES NOT TURN ON
TROUBLESHOOTING GUIDE
IS F501 BROKEN ?
NO
IS THERE VOLTAGE
AT PIN 4 OF IC503
20.5V ?
YES
IS THERE VOLTAGE
AT PIN 4 OF IC506
AT5V ?
YES
IS THERE VOLTAGE
AT PIN 2 OF IC3804
AT3.3V ?
YES
NO
NO
NO
CHANGE F501.
CHECK IC503 AND
PERIPHERAL CIRCUIT.
CHECK IC506 AND
PERIPHERAL CIRCUIT.
OR CHANGE POWER PCB.
CHECK IC3804 AND
PERIPHERAL CIRCUIT.
OR CHANGE AV PCB.
YES
CHANGE SCALER PCB.
E-1
THE PICTURE DOES NOT
APPEAR (1).
TROUBLESHOOTING GUIDE
DOSE BACK LIGHT SHINE ?
YES
IS CD7204 CONNECTED ?
YES
IS THERE SIGNAL
AT CP7204 ?
NO
IS THERE SIGNAL
AT IC7201 ?
NO
NO
YES
NO
IS THERE VOLTAGE AT
PINS 1, 2, 3, 4 AND 5
OF CP503 24V ?
YES
CONNECT CD7204.
NO
CHECK IC502, T502 AND
PERIPHERAL CIRCUIT.
CHANGE V2301.
CHANGE IC7201.
YES
CHECK IC801.
OR CHANGE SCALER PCB.
E-2
THE PICTURE DOES NOT
APPEAR (2).
TROUBLESHOOTING GUIDE
IS THERE SIGNAL
AT IC4201 ?
YES
IS CD4203 CONNECTED
AND IS THERE SIGNAL ?
YES
CHECK IC801 AND
PERIPHERAL CIRCUIT.
NO
NO
CHECK IC4201 AND
PERIPHERAL CIRCUIT.
CONNECT CD4203.
CHECK IC4201 AND
PERIPHERAL CIRCUIT.
E-3
THE PICTURE APPEARS, BUT
THE AUDIO DOES NOT
APPEAR.
TROUBLESHOOTING GUIDE
IS CD301 AND CD303
CONNECTED ?
YES
IS THERE SIGNAL
CD301 AND CD303 ?
NO
IS THERE SIGNAL
AT PINS 11 AND 15
OF IC301 ?
NO
IS THERE SIGNAL
AT PINS 27 AND 28
OF IC904 ?
NO
YES
YES
NO
CONNECT CD301 AND CD303.
CHANGE SP301 AND SP302.
CHECK IC301 AND
PERIPHERAL CIRCUIT.
CHECK IC904 AND
PERIPHERAL CIRCUIT.
YES
CHANGE AV PCB.
E-4
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