Emerson EWL20D6 Schematic

SERVICE MANUAL

Model EWL20D6 has A version and non-A version types. This service manual is for the EWL20D6 non-A verion models. For the A version models, suffix A is printed to the model number as EWL20D6 A on the Rating Label, and for the non-A version models, suffix A is not printed to the model number. Refer to the Rating Label on the back of the unit to make sure model types.

20″ LCD TV/DVD

EWL20D6

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommended by Funai and described in this service manual are effective methods of performing service operations. Some of these service special tools should be used when and as recommended.

It is important to note that this service manual contains various CA UTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It also is important to understand that these CA UTIONS and NOTICES ARE NOT EXHAUSTIVE. Funai could not possibly know, evaluate and advice the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, Funai has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by Funai must first use all precautions thoroughly so that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.

The LCD panel is manufactured to pro vide many years of useful life. Occasionally a few non active pixels may appear as a tiny spec of color. This is not to be considered a defect in the LCD screen.

Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories.

TABLE OF CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Laser Beam Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Cabinet Disassembly Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Electrical Adjustment Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

How to Initialize the LCD TV/DVD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Firmware Renewal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Block Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Schematic Diagrams / CBA's and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-1

SPECIFICATIONS

< LCD TV Section >

< TUNER >

VHF/UHF Input : 75 ohm Unbal., F type

Intermediate Freq. : Picture 45.75 MHz, Sound 41.25 MHz

Description Condition Unit Nominal Limit

1. Video S/N 80dB dB 45 40

2. Audio S/N RF dB 45 40/40

< LCD PANEL >

Description Condition Unit Nominal Limit

1. Number of Pixels

2. Viewing Angle

Horizontal

Vertical

Horizontal

Vertical

pixels pixels

° °

< VIDEO >

Description Condition Unit Nominal Limit

1. Over Scan

2. Color Temperature

3. Resolution

4. Brightness

Horizontal

Vertical

AT 80% WHITE FIELD

x y

Horizontal

Vertical

AT 100% WHITE FIELD

BRT/CNT MAX

% %

°K

line line

cd/m

< AUDIO >

All items are measured across 8 Ω load at speaker output terminal with L.P.F.

Description Condition Unit Nominal Limit

640 × 3

480

-85 to 85

-85 to 70

94 94

11000-10MPCD

0.276

0.282 270

350 450 ---

---

89 to 99 89 to 99

--±0.03 ±0.03

220 300

1. Audio Output Power 10% THD: Lch/Rch W 1.0/1.0 0.8/0.8

2. Audio Distortion 500mW: Lch/Rch % 1.0/1.0 4.0/4.0

3. Audio Freq. Response

4. Audio S/N

Note: Nominal specifications represent the design specifications. All units should be able to approximate these.

Some will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.

6dB: Lch

6dB: Rch

VIDEO1 VIDEO2

1-1 L2550SP

Hz Hz

dB dB

100 to 12 k 100 to 12 k

50 50

---

40/40 40/40

< DVD Section >

Description Condition Unit Nominal Limit

1. Horizontal Resolution (TDV-540 TIT.2 CHP.16) --- Line 350 330

2. Video S/N (TDV-540 TIT.2 CHP.6) --- dB 60 55

3. S/N Chroma (TDV-540 TIT.2 CHP.17)

4. Audio distortion (LPCM 48 kHz, W/LPF) (PTD 1-NOR TIT.1 CHP.1)

5. Audio freq. re sponse (LPCM 48 kHz) (PTD 1-NOR TIT.1 CHP.5 -- 10)

6. Audio S/N (LPCM 48 kHz,W/LPF,A-WTD) (PTD 1-NOR TIT.1 CHP.1 -- 2)

NOTES:

1. All Items are measured without pre-emphasis unless otherwise specified.

2. Power supply : AC120 V, 60 Hz

3. Ambient temperature: +25

AM --- dB 58 53 PM --- dB 58 53

L, 20 Hz

R, 20 Hz

L, 20 kHz

R, 20 kHz

% 0.03 0.07

dB 0 +4/-5

dB 85 75

°C

1-2 L2550SP

LASER BEAM SAFETY PRECAUTIONS

This DVD player uses a pickup that emits a laser beam.

Do not look directly at the laser beam coming from the pic kup or allo w it to strike a gainst y our skin.

The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30 cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.

CAUTION: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure.

Drive Mechanism Assembly

Laser Beam Radiation

Laser Pickup

Turntable

WHEN OPEN. DO NOT

CAUTION

LASER RADIATION

STARE INTO BEAM.

Location: Top of DVD mechanism.

2-1 E7NLSP

IMPORTANT SAFETY PRECAUTIONS

Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

Safety Precautions for LCD TV Circuit

1. Before returning an instrument to t he

customer, always make a safety check of the

entire instrument, including, but not limited to, the following items:

a. Be sure that no built-in protective devices are

defective and have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate this instrument or

permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage.

b. Be sure that there are no cabinet openings

through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spacing between the Liquid Crystal Panel and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabine t back cover.

c. Antenna Cold Check - With the instrument AC

plug removed from any AC source, connect an electrical jumper across the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal screw and, if applicable, to the coaxial connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 megohm, an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the instrument AC switch in the off position.

d. Leakage Current Hot Check - With the

instrument completely reassembled, plug the AC line cord directly into a 120 V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on position and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milli-ampere. Reverse the instrument power cord plug in the outlet and repeat the test.

READING SHOULD NOT BE ABOVE 0.5 mA

LEAKAGE

DEVICE

BEING

TESTED

TEST ALL EXPOSED METAL SURFACES

ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED

ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINA TE D BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES.

2. Read and comply with all caution and safety-

related notes on or inside the receiver cabinet, on the receiver chassis, or on the Liquid Crystal Panel.

CURRENT

TESTER

EARTH GROUND

3-1 LTVN_ISP

3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions, including, but not limited to circuit modifications and the addition of items such as auxiliary audio and/or video output connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom.

4. Hot Chassis Warning a. Some TV receiver chassis are electrically

connected directly to one conductor of the AC power cord and maybe safety-serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. To confirm that the AC power plug is inserted correctly, with an AC voltmeter, measure between the chassis and a known earth ground. If a voltage reading in excess of

1.0V is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground.

b. Some TV receiver chassis normally have 85V

AC(RMS) between chassis and earth ground regardless of the AC plug polarity. This chassis can be safety-serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection.

c. Some TV receiver chassis have a secondary

ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground systems are electrically separated by insulation material that must not be defeated or altered.

5. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts-be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage, and, e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring. Check AC power cord for damage.

6. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.

7. Product Safety Notice - Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by a # on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The product's safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are strictly inspected to confirm they comply with the recognized product safety and electrical codes of the countries in which they are to be sold. Howev e r, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

3-2 LTVN_ISP

Precautions during Servicing

A. Parts identified by the # symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads

D. Use specified insulating materials for hazardous

live parts. Note especiall y:

1) Insulation Tape

2) PVC tubing

3) Spacers

4) Insulators for transistors.

E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering.

F. Observe that the wires do not contact heat

producing parts (heat sinks, oxide metal film resistors, fusible resistors, etc.)

G. Check that replaced wires do not contact sharp

edged or pointed parts.

H. When a power cord has been replaced, check that

5~6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder

droplets, etc.) do not remain inside the set.

K. Crimp type wire connector

The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the transformer, follow these steps carefully and precisely to prevent shock hazards. Replacement procedure

1) Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector (discard it).

2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.

3) Align the lengths of the wires to be connected. Insert the wires fully into the connector.

4) Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.

L. When connecting or disconnecting the internal

connectors, first, disconnect the AC plug from the AC supply outlet.

M. When installing parts or assembling the cabinet

parts, be sure to use the proper screws and tighten certainly.

3-3 LTVN_ISP

Safety Check after Servici n g

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.

1. Clearance Distance

When replacing primary circuit components, confirm specified clearance distance (d) and (d') between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1)

Table 1: Ratings for selected area

Chassis or Secondary Conductor

Primary Circuit

AC Line Voltage Region

110 to 130 V

Note: This table is unofficial and for reference only. Be

sure to confirm the precise values.

U.S.A. or

Canada

Clearance

Distance (d), (d’)

≥ 3.2 mm

(0.126 inches)

2. Leakage Current Test

Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below.

Measuring Method: (Power ON)

Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See Fig. 2 and following table.

d' d

Fig. 1

Exposed Accessible Part

AC V oltmeter (High Impedance)

Earth Ground

Power Cord Plug Prongs

Fig. 2

Table 2: Leakage current ratings for selected areas

AC Line Voltage Region Load Z Leakage Current (i) Earth Ground (B) to:

110 to 130 V

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

U.S.A. or

Canada

0.15 µF CAP. & 1.5 kΩ

RES. Connected in parallel

3-4 LTVN_ISP

i ≤ 0.5 mA rms

Exposed accessible

parts

STANDARD NOTES FOR SERVICING

Circuit Board Indications

1. The output pin of the 3 pin Regulator ICs is indicated as shown.

Top View

Out

2. For other ICs, pin 1 and every fifth pin are indicated as shown.

Pin 1

3. The 1st pin of every male connector is indicated as shown.

Input

Bottom View

Pb (Lead) Free Solder

Pb free mark will be found on PCBs which use Pb free sold er . (Refer to fig ure.) For P CBs wi th Pb fr ee mark, be sure to use Pb free solder. For PCBs without Pb free mark, use standard solder.

Pb free mark

How to Remove / Install Flat Pack-IC

1. Removal

With Hot-Air Flat Pack-IC Desoldering Machine:

1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)

Pin 1

Instructions for Connectors

1. When you connect or disconnect the FFC (Flexible Foil Connector) cable, be sure to first disconnect the AC cord.

2. FFC (Flexible Foil Connector) cable should be inserted parallel into the connector, not at an angle.

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Fig. S-1-1

2. Remove the flat pack-IC with tweezers while applying the hot air.

3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)

CAUTION:

1. The Flat Pack-IC shape may differ b y mo dels . Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC.

2. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape

4-1 TVDVDN_SN

around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)

3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.

Hot-air Flat Pack-IC Desoldering

CBA

Machine

With Soldering Iron:

1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)

Flat Pack-IC

Desoldering Braid

Soldering Iron

Fig. S-1-3

Masking Tape

Tweezers

Flat Pack-IC

Fig. S-1-2

2. Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)

Sharp Pin

Fine Tip Soldering Iron

4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)

Fig. S-1-4

4-2 TVDVDN_SN

With Iron Wire:

1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)

2. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5.

3. While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pa ds as shown in Fig. S-1-5.

4. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

5. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)

Note: When using a soldering iron, care must be

taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.

Hot Air Blower

2. Installation

1. Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily.

2. The “●” mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.)

3. Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges.

Example :

Pin 1 of the Flat Pack-IC is indicated by a " " mark.

Fig. S-1-7

To Solid Mounting Point

CBA

Tweezers

Iron Wire

Soldering Iron

Fig. S-1-5

Fine Tip Soldering Iron

Flat Pack-IC

Presolder

Flat Pack-IC

CBA

Fig. S-1-8

Fig. S-1-6

4-3 TVDVDN_SN

Instructions for Handling Semiconductors

Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged on the body.

2. Ground for Workbench

Be sure to place a conductive sheet or copper plate with proper grounding (1 MΩ) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing.

1MΩ

CBA

Grounding Band

1MΩ

CBA

Conductive Sheet or Copper Plate

4-4 TVDVDN_SN

CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly F lowchart

This flowchart indicates the disassembly steps for the cabinet parts, and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables as they were.

[12] Speaker(R)

[13] Speaker(L)

[3] Jack Holder

[8] Inverter CBA

[10] Function CBA

[1] Rear Cabinet

[4] DVD Main CBA Unit

[5] DVD Mechanism

[6] DVD Holder

[7] Main CBA

[9] LCD Module

[11] IR Sensor CBA

[2] Tilt Stand Assembly

[15] Stand Cover

[16] Arm Holder

[17] Sheet L, R

[18] Arm Assembly

Step/

Loc.

Part

No.

[7] Main CBA

Inverter

[8]

CBA LCD

[9]

Module Function

[10]

CBA IR Sensor

[11]

CBA

[12] Speaker(R) D4

[13] Speaker(L) D4

Removal

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Note

Desolder

6(S-9), *CN404, *CN801, *CN1201,

*CN1202, *CN1205,

*CN1206, *CN1207 4(S-10), *CN301,

*CN302, *CN303,

*CN310

D4 9(S-11) ---

D4 3(S-12) ---

D4 (S-13) ---

2(S-14), Speaker Holder (s)

2(S-15), Speaker Holder (s)

---

[14] Front Cabinet

2. Disassembly Metho d

Removal

Step/

Loc.

Part

No.

Rear

[1]

Cabinet Tilt Stand

[2]

Assembly

[3] Jack Holder D2 3(S-4), (S-5) ---

DVD Main

[4]

CBA UnitD2D6 DVD

[5]

Mechanism

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Desolder

D1 10(S-1), (S-2) ---

D1 4(S-3) ---

(S-6), *CN201, *CN301, *CN401, *CN601, *CN801

D2 4(S-7)

Note

2 3

Front

[14]

[15]

Cabinet Stand

Cover

D4 --------------- ---

D5 6(S-16) ---

[16] Arm Hol der D5 2(S-17) --[17] Sheet L, R D5 -------------- - ---

Arm

[18]

↓

(1)

Assembly

↓

(2)

D5 --------------- ---

↓

(3)

↓

(4)

(5)

↓

[6] DVD Holder D2 1(S-8) ---

5-1 L2652DC

Note:

(1) Order of steps in procedure. When reassembling,

follow the steps in reverse order. These numbers are also used as the Identification (location) No. of

parts in figu r es. (2) Parts to be removed or installed. (3) Fig. No. showing procedure of part location (4) Identification of parts to be removed, unhooked,

unlocked, released, unplugged, unclamped, or

desoldered.

P = Spring, L = Locking Tab, S = Screw,

CN = Connector

* = Unhook, Unlock, Release, Unplug, or Desolder

e.g. 2(S-2) = two Screws (S-2),

2(L-2) = two Locking Tabs (L-2) (5) Refer to the following "Reference Notes in the

Table."

Reference Notes

1. CAUTION 1: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair work. To avoid damage of pickup follow next procedures.

1) Short the three short lands of FPC cable with

solder before removing the FFC cable (CN201) from it. If you disconnect the FFC cable (CN201), the laser diode of pickup will be destroyed. (Fig. D2)

2) Disconne ct Conn ec tors (CN 301) , (CN 401),

(CN601) and (CN801). Remove three Screws (S-7) and remove the DVD Main CBA Unit. (Fig. D2)

2. Reassembly Notes of New DVD Mechanism: a. To remove the Chassis Cover, remove four

screws A as shown in Fig. D2.

b. To avoid damage of the pickup unit (laser

diode), confirm that the three short lands (either of two places) are shorted out by soldering between them as shown in View A in Fig. D2.

c. Connect the FFC cables of the new DVD

Mechanism to the three connectors (CN201, CN301, CN801) on the DVD Main CBA.

d. After confirming that the FFC cables are

securely connected to the three connectors, remove the solder from the three short lands. If the sold er is not removed, the laser diode will not light and it will not be possible to read discs.

e. Insert the pin A on the Chassis Cover into the

hole A on the Main Chassis as shown in Fig. D2. Then tighten four screws A to install the Chassis Cover.

3. CAUTION 2: When reassembling, confirm the FFC cable (CN201) is connected completely. Then remove the solder from the three short lands of FPC cable. (Fig. D2)

4. How to eject a disc in emergency Press and hold [EJECT] on the unit for more than 5 seconds.

5-2 L2652DC

[1] Rear Cabinet

[2] Tilt Stand Assembly

(S-1)

(S-2)

(S-1)

(S-3)

(S-1)

Fig. D1

5-3 L2652DC

[3] Jack Holder

(S-4)

[6] DVD Holder

[5] DVD Mechanism

(S-8)

(S-7)

(S-5)

(S-7)

(S-4)

(S-7)

(S-6)

[4] DVD Main CBA Unit

Remove two screws A, then short the three short lands by soldering as shown in View for A.

Chassis Cover

Pin A

Either of two places

Screws A

FPC Cable

View for A

Hole A

Main Chassis

Fig. D2

5-4 L2652DC

(S-9)

[8] Inverter CBA

(S-9)

(S-10)

[7] Main CBA

(S-9)

Fig. D3

5-5 L2652DC

[14] Front Cabinet

[12] Speaker(R)

Speaker Holders

(S-14)

[11] IR Sensor CBA

[10] Function CBA

(S-12)

(S-11)

[13] Speaker(L)

Speaker Holders

(S-15)

(S-13)

[9] LCD Module

(S-11)

Fig. D4

5-6 L2652DC

[16] Arm Holder

[18] Arm Assembly

[15] Stand Cover

(S-17)

[17] Sheet R

[17] Sheet L

(S-16)

Fig. D5

5-7 L2652DC

TV Cable Wiring Diagram

To DVD Mechanism

DVD Main CBA Unit

CN201

CN601

CN301 CN801

CN401

CN1205

CN1201

CN1701

To LCD Module

CN1206

CN1207

Function CBA

CLN904

Main CBA

CN404

Inverter CBA

CN301

CN304

CN302

To LCD Module

CN801

To Speaker

CN1202

CLN105

CN1651

IR Sensor CBA

CN303

CN310

To Speaker

Fig. D6

5-8 L2652DC

3. How to Eject Manu ally

1. Remove the Rear Cabinet.

2. To remove the DVD Main CBA Unit, remove a screw (S-6) in Fig. D2. Do not disconnect connectors.

3. To remove the Chassis Cover, remove two screws A as shown in Fig. D7.

4. Remove a disc.

Disc

Chassis Cover

Screws A

Fig. D7

Reassembly note of the Chassis Cover:

1. Insert the pin A on the Chassis Cover into the hole A on the Main Chassis as shown in Fig. D8.

Chassis Cover

Pin A

Hole A

Main Chassis

Fig. D8

2. Tighten two screws A as shown in Fig. D7.

5-9 L2652DC

+ 51 hidden pages