Funai LT8-M40BB Service Manual

SERVICE MANUAL

This Service Manual is for the LH8-M40BB (A03P0EP) / LT8-M40BB (A03P1EP) model. For the LH8-M40BB (A03P0EP) / LT8-M40BB (A03P1EP) model, the letter (A03P0EP) / (A03P1EP) is printed on the Serial Number Label on the back of the unit. Refer to the Serial Number Label below.

Serial No. Label Serial No. Label

"A03P0EP" "A03P1EP"

40″ COLOR LCD TELEVISION

LH8-M40BB / LT8-M40BB

40″ COLOR LCD TELEVISION

LH8-M40BB / LT8-M40BB

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

Firmware Renewal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

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

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

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

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

Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

Electrical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

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.

1-1 A03P0SP

SPECIFICATIONS

< TUNER >

VHS/UHF Input ----------- 75Ω unbal., IEC Connector Center IF ------------------- SECAM-L 38.9MHz, SECAM-L’ 33.9MHz

< LCD PANEL >

<DVB-T>

*1: modulation parameters = [8k 64QAM CR=2/3 GI=1/32] *2: modulation parameters = [8k 16QAM CR=3/4 GI=1/8] *3: modulation parameters = [2k 64QAM CR=2/3 GI=1/32] *4: modulation parameters = [2k 16QAM CR=3/4 GI=1/32]

< VIDEO >

Description Condition Unit Nominal Limit

1. Video S/N 80 dB --- 40

2. Audio S/N --- dB --- 40/40

Description Condition Unit Nominal Limit

1. Number of Pixels

Horizontal

Ver ti ca l

pixels pixels

1920 1080

---

2. Viewing Angle

Horizontal

Ver ti ca l

° °

-88 to 88

---

Description Condition Unit Nominal Limit

RECEIVED FREQ.RANGE (-60dBm, 45ch.) *1, *2

kHz kHz

1000

900

500 167

2. INPUT DYNAMIC RANGE (mix./max)

c:*1 VHF HIGH 8ch.

UHF 45ch.

dBuV dBuV

25/101 25/101

28/98 29/98

d:*2 VHF HIGH 8ch.

UHF 45ch.

dBuV dBuV

18/101 18/101

21/98 21/98

3. C/N PERFORMANCE

(-50dBm)

c:*1 VHF HIGH 8ch.

UHF 45ch.

dB dB

15 15

≦18 ≦18

d:*2 VHF HIGH 8ch.

UHF 45ch.

dB dB

11 11

≦14 ≦14

4. MULTIPATH (-50dBm)

a. Performance with

short delay echoes

b. Performance with

long delay echoes

UHF 45ch.

c:*3 d:*4 c:*3 d:*4

dB dB dB dB

18.7

14.0

19.1

13.0

≦23 ≦20 ≦23 ≦18

Description Condition Unit Nominal Limit

1. Over Scan

Horizontal

Ver t i cal

% %

5 5

---

2. Color Temperature

AT 70 % W H IT E F I E L D

x y

°K 9200

0.286

0.295

--±0.008 ±0.008

3. Resolution

Horizontal

Ver t i cal

line line

400 350

---

4. Brightness AT 100% WHITE FIELD cd/m

450 ---

1-2 A03P0SP

< AUDIO >

All items are measured across 8 Ω load at speaker output terminal.

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.

Description Condition Unit Nominal Limit

1. Audio Output Power 10% THD: Lch/Rch W 10.0/10.0 8.0/8.0

2. Audio Distortion 500mW: Lch/Rch % 1.5/1.5 3.0/3.0

3. Audio Freq. Response

6dB: Lch

6dB: Rch

Hz Hz

70 to 10 k 70 to 10 k

---

4. Audio S/N Lch/Rch dB ---

≧45/45

2-1 LTVP_ISP

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 LCD module 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 230 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.

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 LCD module.

3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this LCD 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.

ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED

TEST ALL EXPOSED METAL SURFACES

READING SHOULD NOT BE ABOVE 0.5 mA

EARTH GROUND

DEVICE

LEAKAGE

CURRENT

TESTER

BEING

TESTED

2-2 LTVP_ISP

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

1.0 V 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.. Par ts 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.

2-3 LTVP_ISP

Precautions during Servicing

A. Par ts 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. When connecting or disconnecting the internal

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

L. When installing parts or assembling the cabinet

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

2-4 LTVP_ISP

Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Obser ve 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 : Ra t ings for se l ecte d area

Note: This table is unofficial and for reference only.

Be sure to confirm the precise values.

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.).

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.

Table 2 : Leak age c urre n t ra t ings for sel ected area s

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

AC Line Voltage Clearance Distance (d), (d’)

220 to 240 V

≥ 3mm(d)

≥ 8mm(d’)

Fig. 1

Chassis or Secondary Conductor

Primary Circuit

d' d

Fig. 2

AC Voltmeter (High Impedance)

Exposed Accessible Part

One side of Power Cord Plug Prongs

AC Line Voltag e Load Z Leakage Current (i)

One side of power cord plug

prongs (B) to:

220 to 240 V

2kΩ RES.

Connected in

parallel

i≤0.7mA AC Peak

i≤2mA DC

RF or

Antenna terminals

50kΩ RES.

Connected in

parallel

i≤0.7mA AC Peak

i≤2mA DC

A/V Input, Output

3-1 TVP_SN

STANDARD NOTES FOR SERVICING

Circuit Board Indications

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

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

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

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.

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)

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-I C.

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. 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.

Top View

Out

Bottom View

Input

Pin 1

Pb free mark

Fig. S-1-1

Hot-air Flat Pack-IC Desoldering Machine

CBA

Flat Pack-IC

Tweezers

Masking Tape

Fig. S-1-2

3-2 TVP_SN

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)

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)

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

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.

Flat Pack-IC

Desoldering Braid

Soldering Iron

Fig. S-1-3

Fine Tip Soldering Iron

Sharp Pin

Fig. S-1-4

To Solid Mounting Point

Soldering Iron

Iron Wire

Hot Air Blower

Fig. S-1-5

Fine Tip Soldering Iron

CBA

Flat Pack-IC

Tweezers

Fig. S-1-6

3-3 TVP_SN

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 “ I ” mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the pin 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.

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.

Example :

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

Fig. S-1-7

Presolder

CBA

Flat Pack-IC

Fig. S-1-8

CBA

Grounding Band

Conductive Sheet or Copper Plate

1MΩ

CBA

4-1 A03P0DC

CABINET DISASSEMBLY INSTRUCTIONS

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.

2. Disassembly Method

Step/

Loc.

No.

Part

Removal

Fig.

No.

Remove/*Unhook/

Unlock/Release/

Unplug/Unclamp/

Desolder

Note

[1]

Stand Cover Assembly

D1 6(S-1) ---

[2]

Stand Hinge

D1 4(S-2), 2(S-3), 2(S-4) ---

[3]

Stand Sub Cover

D1 --------------- ---

[2] Stand Hinge

[4] Rear Cabinet

[6] Speaker

[5] Speaker Holder

[3] Stand Sub Cover

[12] Inverter Power CBA

[16] Shield Box

[18] PCB Holder

[20] Stand Bracket

[19] AC Inlet Holder

[15] Jack Holder

[13] Tuner Shield

[10] Jack Holder(HP)

[11] Jack CBA

[17] Digital Main CBA Unit

[14] Power Supply CBA

[22] LCD Module Assembly

[23] Front Cabinet

[1] Stand Cover

Assembly

[7] Junction CBA

[9] Function CBA

[8] IR Sensor CBA

[21] Wall Mount Bracket (L,R)

[4]

Rear Cabinet

20(S-5), 4(S-6), 2(S-7), (S-8), (S-9)

---

[5]

Speaker Holder

D2D64(S-10), *CN801,

*CN802

---

[6] Speaker D2 --------------- ---

[7]

Junction CBA

D2 D6

*CN101, *CL102B ---

[8]

IR Sensor CBA

D2 D6

(S-11), *CL103B ---

[9]

Function CBA

D2D6Function Knob,

Knob Frame

---

[10]

Jack Holder (HP)

D3 (S-12) ---

[11] Jack CBA

D3 D6

2(S-13), *CL201B ---

[12]

Inverter Power CBAD3D6

4(S-14), *CN1801, *CN1810, *CN1851, *CN1852

---

[13]

Tu ne r Shield

D4 2(S-15) ---

[14]

Power Supply CBA

D4 D6

6(S-16), *CN401, *CN402, *CN403, *CN404, *CN452, *CN601

---

[15] Jack Holder D4 2(S-17) ---

[16] Shield Box D4

9(S-18), 2(S-19), 2(H-1), *CN3903

---

[17]

Digital Main CBA UnitD4D6

--------------- ---

[18] PCB Holder D4 4(S-20) ---

[19]

AC Inlet Holder

D5 2(S-21) ---

[20]

Stand Bracket

D5 4(S-22), 4(S-23) ---

[21]

Wall Mount Bracket (L,R)

D5 4(S-24) ---

[22]

LCD Module Assembly

D5 3(S-25), 6(S-26) ---

[23]

Front Cabinet

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

↓

(1)

↓

(2)

↓

(3)

↓

(4)

↓

(5)

Step/

Loc.

No.

Part

Removal

Fig.

No.

Remove/*Unhook/

Unlock/Release/

Unplug/Unclamp/

Desolder

Note

4-2 A03P0DC

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.

N = Nut, L = Locking Tab, S = Screw, H = Hex 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

Ta b l e. "

[4] Rear Cabinet

[2] Stand Hinge

[3] Stand Sub Cover

[1] Stand Cover Assembly

(S-6)

(S-7)

(S-8)

(S-9)

(S-5)

(S-2)

(S-3)

(S-5)

(S-1)

(S-4)

(S-5)

Fig. D1

4-3 A03P0DC

[8] IR Sensor CBA

[7] Junction CBA

[9] Function CBA

[5] Speaker Holder

[6] Speaker

(S-11)

(S-10)

Function Knob

(S-10)

Knob Frame

Fig. D2

(S-12)

(S-13)

(S-14)

[10] Jack Holder(HP)

[11] Jack CBA

[12] Inverter Power CBA

Fig. D3

4-4 A03P0DC

[13] Tuner Shield

[15] Jack Holder

[18] PCB Holder

[14] Power Supply CBA

[17] Digital Main CBA Unit

(H-1)

(S-18)

(S-20)

(S-17)

(S-18)

(S-19)

(S-15)

[16] Shield Box

(S-16)

Fig. D4

4-5 A03P0DC

(S-21)

(S-22)

(S-23)

(S-24)

(S-26)

(S-25)

(S-24)

(S-26)

[22] LCD Module Assembly

[23] Front Cabinet

[19] AC Inlet Holder

[21] Wall Mount Bracket(R)

[20] Stand Bracket

[21] Wall Mount Bracket(L)

Fig. D5

4-6 A03P0DC

3. TV Cable Wiring Diagram

To LCD Module Assembly

To Speaker

To AC Inlet

To Speaker

To LCD Module Assembly

CN453

CN452

CN610

CN600

CN101

CN801

CN601

CL202B

CN802

CL201A

CN401

CN403

CN404

CN402

CN3903

CN3701

CN3711

CN3702

CN3703

CN3704

CN103

CL102A

CL102B

CL103A

CL103B

CN1852

CN1851

CN1801

CN1810

Power Supply CBA

Jack CBA

Digital Main CBA Unit

Function CBA

IR Sensor CBA

Junction CBA

Inverter Power CBA

Fig. D6

5-1 A03A0EA

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. Pattern Generator

2. Color Analyzer

3. Service Remote control unit

How to make the Service remote control unit:

Cut “A” portion of the attached remote control unit as shown in Fig. 1.

How to set up the service mode:

Service mode:

1. Use the service remote control unit.

2. Turn the power on.

3. Press the service button on the service remote control unit as shown in Fig.1.

1. Purity Check Mode

This mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.

1. Enter the Service mode.

2. Each time pressing [7] button on the service remote control unit, the display changes as follows.

3. To cancel or to exit from the Purity Check Mode, press [BACK] button.

Fig. 1

service button

[7] button

Note:

When entering this mode, the default setting is White mode.

Purity Check Mode

[7] button

Red mode

Green mode

Blue mode

Black mode

[7] button

White mode

[7] button

White 20% mode

[7] button

5-2 A03A0EA

2. Auto Calibration [Component]

Purpose: To bring the color adjustment of each

component into standard alignment.

Symptom of Misadjustment: If this adjustment is incorrect, component signals do not reproduce the corresponding color.

1. Input 720P 100% Color Bar signal.

2. Enter the service mode.

3. To enter the Auto Calibration adjustment mode, press [6] button on the service remote control unit.

4. To start auto adjustment, press [P ] button on the service remote control unit.

-In the auto adjustment mode, “Calibration Check”

appears on the screen.

-Upon completion, “OK” appears on the screen.

5. To cancel or to exit from the Auto Calibration [Component], press [BACK] button.

3. Auto Calibration [PC]

Purpose: To bring the color adjustment of PC into

standard alignment.

Symptom of Misadjustment: If this adjustment is incorrect, PC signals do not reproduce the corresponding color.

1. Input SVGA 100% White signal.

2. Enter the service mode.

3. To enter the Auto Calibration adjustment mode, press [5] button on the service remote control unit.

4. To start auto adjustment, press [P ] button on the service remote control unit.

-In the auto adjustment mode, “Calibration Check”

appears on the screen.

-Upon completion, “OK” appears on the screen.

5. To cancel or to exit from the Auto Calibration [PC], press [BACK] button.

5-3 A03A0EA

The White Balance Adjustment should be performed when replacing the LCD Panel or Digital CBA.

4. White Balance Adjustment [Video/Component/PC]

Purpose: To mix red, green and blue beams correctly

for pure white.

Symptom of Misadjustment: White becomes bluish or reddish.

1. Operate the unit for more than 20 minutes.

2. [VIDEO input]

Input the White Raster (70%=70IRE, 30%=30IRE). [Component input] Input the 720P White Raster (70%=70IRE, 30%=30IRE). [PC input] Input the SVGA White Raster (70%=70IRE, 30%=30IRE).

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. Enter the Service mode. Press [ -] button on the service remote control unit and select “C/D” mode.

5. [CUTOFF] Press [3] button to select “COB” for Blue Cutoff adjustment. Press [1] button to select “COR” for Red Cutoff adjustment.

[DRIVE]

Press [6] button to select “DB” for Blue Drive adjustment. Press [4] button to select “DR” for Red Drive adjustment.

6. In each color mode, press [P / ] buttons to adjust the values of color.

7. Adjust Cutoff and Drive so that the color temperature becomes 9200°K (x

0.286 / y= 0.295

±0.005).

8. Change the video signal input in step 2 and repeat from step 3.

9. To cancel or to exit from the White Balance Adjustment, press [BACK] button.

Tes t Po int

Adj. Point Mode Input

Screen

[P / ]

buttons

[VIDEO]

C/D

White Raster

(APL 70%)

(APL 30%)

M. EQ. Spec.

Pattern Generator,

Color analyzer

x= 0.286 ± 0.005 y= 0.295 ± 0.005

Figure

Color Analyzer

L = 3 cm

Perpendicularity

INPUT: WHITE 70%, 30%

To avoid interference from ambient light, this adjustment should be performed in a dark room.

30%=30IRE

70%=70IRE

INPUT SIGNAL

6-1 A03A0INT

HOW TO INITIALIZE THE LCD TELEVISION

How to initialize the LCD television:

1. Turn the power on.

2. To enter the service mode, press the service button on the service remote control unit. (Refer to page 5-1.)

-To cancel the service mode, Press [ ] button on

the remote control unit.

3. Press [ ] button on the service remote control unit to initialize the LCD television.

4. "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is complete.

+ 49 hidden pages