Symphonic 6615LF4, STL1505, 6615LF Schematic

SERVICE MANUAL

15″ COLOR LCD

TELEVISION

6615LF4/ STL1505

15″ COLOR LCD

TELEVISION

6615LF

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 CAUTIONS 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 CAUTIONS 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.

TABLE OF CONTENTS

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

Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Cabinet Disassembly Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

How to initialize the LCD Television . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

The LCD panel is manufactured to provide 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.

SPECIFICATIONS

< TUNER >

ANT. Input ---------------------- 75 ohm Unbal., F type Reference Level--------------- 20 Vp-p (LCD Green Cathode) Test Input Signal -------------- 400 Hz 30% modulation

Description Condition Unit Nominal Limit

1. Intermediate Freq.

2. Color Killer Sens.

3. AFT Pull In Range (10 mV input) --- MHz ±2.1 ±0.7

Picture

Sound

CH-2 CH-10 CH-55

MHz MHz

dBµV dBµV dBµV

45.75

41.25 15

15 15

---

--20

20 20

< LCD PANEL >

Description Condition Unit Nominal Limit

1. Number of Pixels

2. Brightness cd/m

3. Response Time --- msec 16 ---

4. Support Color --- - 26 mil. (6 bit) ---

5. Viewing Angle

Horizontal

Vert ical

Horizontal

Vert ical

pixels pixels

° °

640 × 3

480

500 ---

-80 to 80

-65 to 70

---

< VIDEO >

Description Condition Unit Nominal Limit

1. Over Scan

2. Color Temperature

3. Resolution

Horizontal

Vert ical

--x y

Horizontal

Vert ical

% %

°K

line line

7 7

9200

0.286

0.294 400

350

---

--±0.3 ±0.3

---

< AUDIO >

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

Description Condition Unit Nominal Limit

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

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.

3dB: Lch

3dB: Rch

Hz Hz

50 to 12 k 50 to 12 k

---

1-1 L0306SP

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 the

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 cabinet 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 ELIMINATED 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

2-1 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. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

2-2 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 especially:

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.

2-3 LTVN_ISP

Safety Check after Servicing

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 Terminals

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.

dd'

Fig. 1

Exposed Accessible Part

AC Voltmeter (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

2-4 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.

Pin 1

Input

Bottom View

Pb (Lead) Free Solder

Pb free mark will be found on PCBs which use Pb free solder. (Refer to figure.) For PCBs with Pb free 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)

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

3-1 TVN_SN

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.

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)

CBA

Masking Tape

Tweezers

Hot-air Flat Pack-IC Desoldering Machine

Flat Pack-IC

Fig. S-1-2

Flat Pack-IC

Desoldering Braid

Soldering Iron

Fig. S-1-3

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

3-2 TVN_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 pads 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

3-3 TVN_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

3-4 TVN_SN

CABINET DISASSEMBLY INSTRUCTIONS

[ 6615LF4/STL1505 ]

1. Disassembly Flowchart

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.

[5] Function CBA

[6] Speaker (s)

[1] Rear Cabinet

[2] Jack Holder

[3] Main CBA

[4] LCD Main CBA & Liquid Crystal Panel Unit

[7] Front Cabinet

2. Disassembly Method

Removal

Step/

Loc.

No.

Part

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Note

Desolder

Removal

Step/

Loc.

No.

[7]

↓

(1)

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 figures.

(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."

Part

Front Cabinet

↓

(2)

Remove/*Unhook/

Fig.

No.

D2 --------------- ---

(3)

Unlock/Release/

Unplug/Unclamp/

Desolder

↓

Note

↓

(4)

↓

(5)

Rear

[1]

Cabinet

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

[3] Main CBA

LCD Main CBA &

[4]

Liquid Crystal Panel Unit

Function

[5]

CBA

[6] Speaker (s)

D1 6(S-1), (S-2) ---

10(S-5), *CN101A,

*CN102A, *CN103A,

*CN402, *CN403, *CN801, *CN802

11(S-6), *CLN104 ---

4(S-7) ---

D3 D2

4(S-8) ---

---

4-1 L3100_05DC

(S-1)

[1] Rear Cabinet

(S-1)

(S-2)

[7] Front Cabinet

[6] Speaker

(S-7)

[5] Function CBA

(S-8)

[4] LCD Main CBA & Liquid Crystal Panel Unit

(S-8)

(S-6)

[2] Jack Holder

(S-4)

(S-6)

(S-3)

(S-5)

(S-6)

(S-3)

(S-1)

(S-6)

(S-5)

Fig. D1

[3] Main CBA

(S-5)

Fig. D2

4-2 L3100_05DC

TV Cable Wiring Diagram

LCD Main CBA & Liquid Crystal Panel Unit

Function CBA

CLN104

CN104

CN113

CN801

To Speaker

CN103B

CN103A

CN102B

CN102A

CN101B

CN101A

Main CBA

CN402

CN403

CN802

To Speaker

LCD Main CBA & Liquid Crystal Panel Unit

Fig. D3

4-3 L3100_05DC

[ 6615LF ]

1. Disassembly Flowchart

[5] Function CBA

[7] Speaker (s)

[1] Rear Cabinet

[2] Jack Holder

[3] Main CBA

[4] LCD Main CBA & Liquid Crystal Panel Unit

[8] Front Cabinet

[6] IR Sensor CBA

2. Disassembly Method

Removal

Step/

Loc.

No.

Part

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Note

Desolder

Removal

Step/

Loc.

No.

Part

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Note

Desolder

Front

[8]

↓

(1)

Cabinet

↓

(2)

D2 --------------- ---

↓

(3)

↓

(4)

↓

(5)

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 figures.

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

(5) Refer to the following "Reference Notes in the

Table."

Rear

[1]

Cabinet

D1 10(S-1), 3(S-2) ---

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

8(S-5), *CN101A,

[3] Main CBA

*CN102A, *CN103A,

*CN402, *CN403,

---

*CN801, *CN802

LCD Main

[4]

CBA & Liquid Crystal

D2D311(S-6), *CLN104,

*CLN105

---

Panel Unit Function

[5]

CBA IR Sensor

[6]

CBA

[7] Speaker (s)

4(S-7) ---

D3 D2

(S-8) ---

D3 D2

6(S-9) ---

4-4 L3108DC

(S-1)

[1] Rear Cabinet

(S-1)

(S-2)

[8] Front Cabinet

(S-1)

[7] Speaker

(S-9)

(S-1)

(S-7)

(S-1)

(S-2)

[5] Function CBA

(S-6)

Fig. D1

[3] Main CBA

[7] Speaker

[6] IR Sensor CBA

(S-6)

(S-9)

(S-6)

(S-8)

[4] LCD Main CBA & Liquid Crystal Panel Unit

(S-6)

[2] Jack Holder

(S-4)

4-5 L3108DC

(S-3)

(S-5)

(S-6)

(S-3)

(S-5)

Fig. D2

TV Cable Wiring Diagram

LCD Main CBA & Liquid Crystal Panel Unit

CN104

Function CBA

CLN104

CLN105

CN113

CN801

CN103B

CN103A

CN102B

CN102A

CN105

CN101A

IR Sensor CBA

CN101B

Main CBA

CN402

CN403

CN802

To Speaker

LCD Main CBA & Liquid Crystal Panel Unit

Fig. D3

4-6 L3108DC

ELECTRICAL ADJUSTMENT INSTRUCTIONS

General Note: “CBA” is abbreviation for “Circuit Board Assembly.”

Note: Electrical adjustments are required after

replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.

Test Equipment Required

1. DC Voltmeter

2. NTSC Pattern Generator (Color Bar W/White Window, Red Color, Dot Pattern, Gray Scale, Monoscope, Multi-Burst)

3. Remote control unit: Part No. N0105UD or N0127UD

4. Color Analyzer

How to make Service remote control unit:

1. Prepare normal remote control unit. (Part No. N0105UD or N0127UD) Remove 3 Screws from the back lid. (Fig. 1-1)

Screws

How to set up the service mode:

Service mode:

1. Use the service remote control unit.

2. Turn the power on. (Use main power on the TV unit.)

3. Press [SLEEP] button on the service remote control unit. Version of micro computer will be displayed on the LCD or display. (Ex: 0004FP-

0.47)

1. Initial Setting

General: Enter the Service mode. (See page 5-1.)

Set the each initial data as shown on table 1 below.

Table 1: Initial Data

Button

Item

BRT CNT 195 CLR-R 64 CLR-B 64 TNT 60

(on the service

remote control)

[MENU] → [1]

Data

Value

140

Remote control unit (bottom)

2. Added J1 (Jumper Wire) to the remote control CBA. (Fig. 1-2)

J 1

Remote Control CBA

Fig. 1-1

Fig. 1-2

V-TN T 60 SHR 35 S-BRT S-CNT 195 S-CLR-R 64

[MENU] → [2]

S-CLR-B 64 S-TNT 64 S-SHR 35 C-BRT C-CNT 164 C-CLR-R 64

[MENU] → [3]

C-CLR-B 64 C-TNT 64 C-SHR 35

143

140

5-1 L3100EA

Item

Button

(on the service

remote control)

Data

Value

3. If Flicker Adjustment is not fit, the screen become the following.

D2-BRT D2-CNT 153 D2-CLR-R 63

[MENU] → [5]

D2-CLR-B 63 D2-TNT 64 D2-SHR 35 D3-BRT D3-CNT 160 D3-CLR-R 66

[MENU] → [6]

D3-CLR-B 66 D3-TNT 64 D3-SHR 35 DR(C/D1)

[VOL p] → [4]

D-DR(C/D2) 147 DB(C/D1)

[VOL p] → [6]

D-DB(C/D2) 142

146

143

126

119

VCOM

110

FLASH (Go and Off)

4. Press [CH o / p] buttons on the remote control unit so that flash stops.

2. Flicker Adjustment

1. Enter the Service mode. (See page 5-1.)

2. Press [2] button on the remote control unit. The following screen appears.

VCOM

110

5-2 L3100EA

The following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.

3. White Balance Adjustment

Purpose: To mix red, green and blue beams correctly

for pure white. Symptom of Misadjustment: White becomes bluish

or reddish.

Test Point Adj. Point Mode Input

[RF/VIDEO1]

Screen

VOL. p

buttons

M. EQ. Spec.

C/D1

[VIDEO2]

C/D2

White Purity

(APL 80%)

(APL 20%)

5. [RF/VIDEO1] When “x” value and “y” value are not within specification, adjust “DB (C/D1)” or “DR (C/D1)”. Refer to “1. Initial Setting.” Note: “DB(C/D1)” or “DR(C/D1)” must be adjusted within ±0.01.

[VIDEO2]

When “x” value and “y” value are not within specification, adjust “DB(C/D2)” or “DR(C/D2)”. Refer to “1. Initial Setting.” Note: “DB(C/D2)” or “DR(C/D2)” must be adjusted within ±0.01.

6. Turn the power off and on again. (Main power button on the TV unit.)

Pattern Generator,

Color analyzer

x: 0.256 to 0.316,

y: 0.264 to 0.324

Figure

It carries out in a darkroom.

Perpendicularity

L = 3 cm

INPUT: WHITE 80%

Note: Use service remote control unit

1. Operate the unit for more than 20 minutes.

2. Input the White Purity (APL 80% or APL 20%).

3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above. Note: The optical receptor must be set perpendicularly to the LCD Panel surface.

4. [RF/VIDEO1] Enter the Service mode. Press “VOL p” button on the remote control unit and select “C/D/S-1” mode.

[VIDEO2]

Enter the Service mode. Press “VOL p” button on the remote control unit and select “C/D/S-2” mode.

Color Analyzer

5-3 L3100EA

HOW TO INITIALIZE THE LCD TELEVISION

How to initialize the LCD television:

1. Turn the power on. (Use main power on the TV unit.)

2. To enter the service mode, press [POWER], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds.

- To cancel the service mode, press [POWER]

button on the remote control.

3. To initialize the LCD television, press “DISPLAY” button on the remote control unit.

4. Confirm "FF" indication on the upper right of the screen.

6-1 L0306INT

BLOCK DIAGRAMS

System Control Block Diagram

POWER

D102

AL +5V

Q102

SENSOR

REMOTE

RCV102

CLN105

P-ON-H44

REMOTE33

CN105

6615LF

KEY SWITCH

IR SENSOR CBA

CLN104

KEY-IN-211

CN104

SENSOR

REMOTE

KEY SWITCH

RCV101

KEY-IN-122

REMOTE66

6615LF4,

STL1505

CN113 IS USED

FOR ADJUSTMENT

AT FACTORY

TO POWER SUPPLY

BLOCK DIAGRAM

P-ON-H

P-ON-H2

FUNCTION CBA

TO LCD BACKLIGHT

BACKLIGHT-SW

BACKLIGHT-ADJ

TO IF/VIDEO

BLOCK DIAGRAM

FSC

SCL

SDA

S-SW

INPUT-0

AFT-IN

INPUT-1

P-ON-H

VOLUME

TO AUDIO

BLOCK DIAGRAM

SDA

SCL

AUDIO-MUTE

SDA2SCL1BUS-OPEN

CN113 (NO CONNECTION)

IC333 (TV MICRO CONTROLLER)

4KEY-IN-2

KEY-IN-1

MAIN CBALCD MAIN CBA UNIT

FSC123

BACKLIGHT-SW

BACKLIGHT-ADJ

P-ON-H16 8

INPUT-012 12

INPUT-111 13

P-ON-H214 10

19 5

21 3

CN102B CN102A

TO POWER

SUPPLY

BLOCK

P-25V-ON

DIAGRAM

221817

BUS-OPEN

BACKLIGHT-SW

BACKLIGHT-ADJ

P-ON-H

P-ON-H2

3140193241

INPUT-0

INPUT-1

P-ON+3.3V(D)

X161

27MHz

RESET

Q151

REMOTE

RESET

XIN

XOUT

S-SW717

SCL618

SDA519

AFT-IN10 14

5AFT-IN

SCL

SDA

S-SW

VOLUME15 9

AUDIO-MUTE 13 11

VOLUME

AUDIO-MUTE

Q301

Q131

TUNERCLK

IC171

(MEMORY)

BUFFER

3.3V<-->5V

CONVERTER

SCL

SDA

BUS-OPEN519

CN103B CN103A

CN112(NO CONNECTION)

SDA 2

SCL 1

BUS-OPEN 4

NO PART

MOUNTED

FOR CN112

7-1

L3100BLS

IF/Video Block Diagram

CVBS11

CN103A

LCD BLOCK

DIAGRAM

CN103B

S-VIDEO-C7

S-VIDEO-Y9

WF8

VIDEO-Y5

CN103A

LCD BLOCK

DIAGRAM

CN103B

VIDEO-Pb/Cb

VIDEO-Pr/Cr

AUDIO SIGNAL

MAIN CBA

VIDEO SIGNAL

TO AUDIO BLOCK

DIAGRAM

SIF

AMP

4.5MHz

FILTER

CF31

SIF

TRAP

IF AGC DET

WF7

Q703

BUFFER

WF9

Q702

BUFFER

Q701

BUFFER

TO AUDIO

BLOCK DIAGRAM

INPUT-0(INV)

INPUT-1(INV)

CONTROL

Q707

Q708

INPUT-0

INPUT-1

TO SYSTEM CONTROL

BLOCK DIAGRAM

TO SYSTEM CONTROL

BLOCK DIAGRAM

AFT-IN

IC781 (INPUT SELECT)

Q32

AMP

DEFEAT

VIDEO

DET

VIF

AMP

IC31 (IF SIGNAL PROCESS)

SAW

FILTER

SF11

TU1

(TUNER UNIT)

VCO

AGC

173

AGC

XTAL-IN

SCL

AFT

SDA

AMP

SDA

FSC

SCL

SYSTEM

CONTROL

BLOCK

WF10

WF11

WF12

S-SW

DIAGRAM

JK703

VIDEO1

BUFFER

Q704

Q705

-IN

JK701

S-VIDEO

JK706

VIDEO-YINJK707

BUFFER

Q706

VIDEO-Pb/CbINJK708

BUFFER

VIDEO-Pr/Cr

7- 2 L3100BLIF

Audio Block Diagram

AUDIO SIGNAL

L-CH

OFFSET

CANCEL

75uS

DE-EMPH

MATRIX AGC

R-CH

OFFSET

CANCEL

WIDE BAND

EXPAND

WIDE BAND

RMS DET

WIDE BAND

FILTER

(L-R)/SAP

SPECTRAL

EXPAND

dBX

DE-EMPH

SPECTRAL

RMS DET

SPECTRAL

FILTER

SP802

SPEAKER

L-CH

CLN802

SP-L 1

CN802

SP801

SPEAKER

R-CH

JK801

HEADPHONE

JACK

GND 2

WF6

VOLUME

/STANDBY

CONTROL

AMP

MUTE

CLN801

GND 2

SP-R 1

CN801

TO IF/VIDEO

SCL

BLOCK DIAGRAM

SDA

INPUT-0(INV)

INPUT-1(INV)

TO SYSTEM

CONTROL BLOCK

VOLUME

P-ON-H

AUDIO-MUTE

Q803

Q802

+5V

IC851 (MTS/SAP AUDIO SIGNAL PROCESS)

L+R

FILTER

OFFSET

STEREO

FILTER

SIF/BB

INPUT

VCA

SIF

DEMOD

SIF

L-R

FILTER

CANCEL

SAP OUT

FILTER

SAP

DEMOD

SAP

FILTER

I2C

DECORDER

IC801 (AUDIO AMP)

TUNER

AUDIO2

AUDIO1

IC852 (INPUT SELECT)

111512

(L-CH)

(R-CH)

TUNER

AUDIO1

AUDIO2

9 10

SW CTL

MAIN CBA

IF/VIDEO BLOCK

DIAGRAM

7-3

AUDIO1(L)

JK704

JK705

AUDIO1(R)

-IN

JK709

AUDIO2(L)

-IN

JK710

AUDIO2(R)

-IN

L3100BLA

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