Philips PL12.2 Service Manual

Service Manual

32” LCD TV

chassis PL12.2

Contents

TYPE A

32PFL4507/F7 PHILIPS (Serial No.: DS1)

32PFL4507/F8 PHILIPS (Serial No.: XA1)

32PFL4507/F8 PHILIPS (Serial No.: DS1)

TYPE B

32PFL4907/F7 PHILIPS (Serial No.: DS1)

This service manual contains information of different types of models.

Make sure to refer to the section describing your model.

All rights reserved. No part of this manual may be reproduced, copied, transmitted, disseminated, transcribed, downloaded or stored in any storage medium, in any form or for any purpose without the express prior written consent of Funai. Furthermore, any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Information in this document is subject to change without notice. Funai reserves the right to change the content herein without the obligation to notify any person or organization of such changes.

with the design is a registered trademark of Funai Electric Co., Ltd and may not be used in any way without the express written consent of Funai. All other trademarks used herein remain the exclusive property of their respective owners. Nothing contained in this manual should be construed as granting, by implication or otherwise, any license or right to use any of the trademarks displayed herein. Misuse of any trademarks or any other content in this manual is strictly prohibited. Funai shall aggressively enforce its intellectual property rights to the fullest extent of the law.

120523

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all P&F Equipment. The service procedures recommended by P&F 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. P&F 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, P&F has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by P&F 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 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.

TABLE OF CONTENTS

Specifications [TYPE A] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[TYPE B] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

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

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

Electrical Adjustment Instructions [TYPE A] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

[TYPE B] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

How to Initialize the LCD TV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Firmware Renewal Mode [TYPE A] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

[TYPE B] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

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

Block Diagrams [TYPE A] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

[TYPE B] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

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

Wiring Diagrams [TYPE A] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

[TYPE B] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

Exploded Views [TYPE A]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

[TYPE B]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2

Parts List [TYPE A]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

[TYPE B] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-4

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

SPECIFICATIONS

[TYPE A]

< TUNER / NTSC >

ANT. Input ---------------------- 75 Ω Unbal., F type

Description Condition Unit Nominal Limit

1. AFT Pull-In Range --- MHz ±2.3 ±2.1 TV.ch.4

2. Synchronizing Sens.

CA.ch.31 CA.ch.87

< TUNER / ATSC >

Description Condition Unit Nominal Limit

1. Received Freq. Range (-28dBm) --- kHz --- ±100

ch.4

2. ATSC Dynamic Range (min / max)

ch.10 ch.41

< LCD PANEL >

Description Condition Unit Nominal Limit

1. Native Pixel Resolution

2. Brightness (w / filter) ---

3. Viewing Angle

Horizontal

Vert ical

Horizontal

Vert ical

dBµ dBµ dBµ

dBm dBm dBm

pixels pixels

cd/m

° °

18 18 18

---

1366

768

300 ---

-85 to 85

20 20 23

-76/0

-76/+4

---

< VIDEO >

Description Condition Unit Nominal Limit

1. Over Scan

2. Color Temperature

3. Resolution (composite video)

Horizontal

Vert ical

--x y

Horizontal

Vert ical

% %

°K 12000

line line

5 5

0.272

0.278 400

350

5±5 5±5

--±3% ±3%

---

< AUDIO >

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

Description Condition Unit Nominal Limit

Audio MAX Output (ATSC 0dBfs)

2. Audio Distortion (NTSC) 500mW: Lch/Rch % 0.5/0.5 2.0/2.0

Lch/Rch W 8.0/8.0 7.0/7.0

1-1 PL12.2SP

[TYPE B]

< TUNER / NTSC >

ANT. Input ---------------------- 75 Ω Unbal., F type

Description Condition Unit Nominal Limit

1. AFT Pull-In Range TV.ch.4 MHz ±2.3 ±2.1 TV.ch.4

2. Synchronizing Sens.

CA.ch.31 CA.ch.87

< TUNER / ATSC >

Description Condition Unit Nominal Limit

1. Received Freq. Range (-28dBm) --- kHz --- ±100

ch.4

2. ATSC Dynamic Range (min / max)

ch.10 ch.41

< LCD PANEL >

Description Condition Unit Nominal Limit

1. Native Pixel Resolution

2. Brightness (w / filter) ---

3. Viewing Angle

Horizontal

Vert ical

Horizontal

Vert ical

dBµ dBµ dBµ

dBm dBm dBm

pixels pixels

cd/m

° °

18 18 18

---

1366

768

300 ---

-88 to 88

20 20 23

-76/0

-76/+4

---

< VIDEO >

Description Condition Unit Nominal Limit

1. Over Scan

2. Color Temperature

3. Resolution (composite video)

Horizontal

Vert ical

--x y

Horizontal

Vert ical

% %

°K 12000

line line

5 5

0.272

0.278 400

350

5±5 5±5

---

±4%

±4.5%

---

< 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 10% Distortion (ATSC 0dBfs)

2. Audio Distortion (NTSC) 500mW: Lch/Rch % 0.5/0.5 2.0/2.0

3. Audio Freq. Response ( NTSC)

Lch/Rch W 8.0/8.0 7.0/7.0

-6dB : Lch

-6dB : Rch

Hz Hz

70 to 10k ---

1-2 PL12.2SP

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

1.0 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. 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

11~13 lb (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.

2-3 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

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 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.

To p Vi ew

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 Ta pe

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 “ 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.

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

1. Disassembly Flowchart

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

[2] Stand

Assembly

[1] Rear Cover

[4] Stand Holder

[5] Power Supply CBA

[6] Digital Main CBA Unit

[8] LCD Panel Assembly

[9] Rear Frame

[10] LCD Module

[11] Front Cabinet

[3] Speaker

[7] Function CBA

2. Disassembly Method

Step/

Loc.

Part

No.

[1] Rear Cover D1 6(S-1), 6(S-2) ---

Fig.

No.

Removal Note

Step/

Loc.

No.

[10]

[11]

↓

(1)

Part

LCD Module

Front Cabinet

↓

(2)

Fig.

No.

Removal Note

D4 --------------- 1,3

D4 --------------- 3

↓

(3)

↓

(4)

↓

(5)

*1: TYPE A

*2: TYPE B

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, H = Hex Screw, CN = Connector e.g. 2(S-2) = two Screws of (S-2), 2(L-2) = two Locking Tabs of (L-2)

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

Table."

Precautions concerning the LCD Panel Assembly:

Stand

[2]

Assembly

[3] Speaker

Stand

[4]

Holder Power

[5]

Supply CBA

Digital Main

[6]

CBA UnitD3D5

D1 3(S-3) ---

CN3801 ---

4(S-4), 2(S-5), 2(S-6),

CN601, Stand Bracket

D3D54(S-7), CN631,

CN1001

3(S-8), CN3006 CN3904 CN3105

, CN3101*1,

---

Jack Holder

[7]

[8]

Function CBA

LCD Panel Assembly

Sensor Plate 2,3

D3 --------------- 3

[9] Rear Frame D4 12(S-9), 2(S-10) 1,3

1. When you disassemble the LCD Panel Assembly

• Be careful not to scratch the Reflection Sheet with

the edge of Rear Frame when disassembling/ re-assembling it.

• Be careful not to drop any plastic chip on the

Reflection Sheet when/after you remove the Screws.

• Prohibit to put any external pressure on the

Reflection Sheet because the scratch on the back of the Reflection Sheet have direct repercussion on the display screen.

• Prohibit to put any external pressure on the Sheet

Holder or LED Heat Sink Assembly either because it also has repercussion on the display screen via the Reflection Sheet.

• You need to remove any visible dust from the

Reflection Sheet which creates the external pressure between the Reflection Sheet and the Sheet Holder/LED Heat Sink Assembly as a result.

4-1 PL12.2-A_DC

• To prevent the Screw from being stripped, the screw tightening torque should be 13.23 lbf·in(6 kgf·cm) for the Rear Frame Screw and 5.512 lbf·in(2.5 kgf·cm) for the LED Heat Sink Assembly Screw.

• Do not pull the FFC Cable and Board Cable forcefully when you re-assemble.

2. When you disassemble/re-assemble the

Function CBA on the Front Cabinet

• Detach the Function CBA, which is attached on the Front Cabinet with double-sided tape, without breaking it.

• When you put the Function CBA back on the New Front Cabinet, you need to use specified new double-sided tape and put the Function CBA onto the New Front Cabinet with equal pressure to the Board. (The gap more than 0.015 inch (0.4 mm)

between the Front Cabinet and Function CBA will impair the sensor sensitivity.)

• Prepare for substitutional Function CBA in case you break it when you detach it from the Front Cabinet.

3. Performance Test after reassembling the LCD

Panel Assembly

• After you swap any of the Front Cabinet, Rear Frame or Function CBA, you need to make sure that there is no Gomikami/Black Spot with foreign material or Mura/White Spot on the display screen.

• Make sure there is no malfunction on the display screen by checking the White Mode and White 20% Mode in the Purity Check Mode.

• Check the operational sensitivity on Touch Sensor Control Panel to make sure everything functions normally.

(S-3)

[1] Rear Cover

(S-1)

(S-2)

[2] Stand Assembly

Fig. D1

4-2 PL12.2-A_DC

Stand Bracket

(S-5)

(S-6)

[4] Stand Holder

(S-5)

(S-6)

(S-4)

[8] LCD Panel Assembly

[3] Speaker

Fig. D2

[6] Digital Main CBA Unit

Sensor Plate

Double-sided tape

[7] Function CBA

[5] Power Supply CBA

(S-7)

*1: Make sure to read all the precautions on page 4-1, 4-2 when you disassemble/re-assemble

the LCD Panel Assembly.

4-3 PL12.2-A_DC

(S-8)

Jack Holder

Fig. D3

[11] Front Cabinet

(S-9)

FFC Cable

(S-9)

FFC Cable

[9] Rear Frame

Sheet Holder

(S-9)

(S-10)

LED Heat Sink Assembly

Sheet Holder

[10] LCD Module

*1: Make sure to read all the precautions on page 4-1, 4-2 when you disassemble/re-assemble

the LCD Panel Assembly.

Fig. D4

4-4 PL12.2-A_DC

TV Cable Wiring Diagram

To LCD Panel Assembly

CN1001

CN601

To AC Cord

Power Supply CBA

CN631

CN3101

CN3105

To LCD Panel Assembly

Digital Main CBA Unit

CN3006

CN3904

CN3701

CN3601

CN3801

Function CBA

CN4001

To Speaker

*1: TYPE A

*2: TYPE B

Fig. D5

4-5 PL12.2-A_DC

ELECTRICAL ADJUSTMENT INSTRUCTIONS

[TYPE A]

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. Remote control unit

2. Color Analyzer, CA-310 (KONICA MINOLTA Luminance meter) or measuring instrument as good as CA-310.

How to set up the service mode:

Service mode:

1. Turn the power on.

2. Press [MENU] button to display Setup menu.

3. Select “Features”.

4. Select “Software Upgrade”.

5. Select “Current Software Info”.

6. Press [0], [6], [2], [5], [9], [6] and [INFO] buttons on the remote control unit in this order. The following screen appears.

"*" differs depending on the models.

Code: Pic code: Panel-Option code: MIPS:

Safety: HDMI EDID: HDMI UART: Touch Sensor Ver:

*******-**-**-****-** ***-*****-***-***-*-** **-***-***-***-***

Push 0 key

Press "POWER" key to exit.

Safety_Non ** OFF

-.-- / ---

Total Watch Time: Lightsensor:

***** **

5-1 PL12.2_A (LC10)EA

1. Purity Check Mode

2. VCOM Adjustment

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 the [7] button on the remote control unit is pressed, the display changes as follows.

Purity Check Mode

White mode

[7] button

Black mode

[7] button

White 50% mode

[7] button

Red, Green, Blue mode

Test Point Adj. Point

Screen

[CHANNEL UP/DOWN]

buttons

M. EQ. Spec.

Color analyzer See below

Figure

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

Perpendicularity

Color Analyzer

1. Set the color analyzer at the zero point calibration and bring the optical receptor pointing at the center of the LCD-Panel. Note: The optical receptor must be set perpendicularly to the LCD Panel surface.

2. Enter the service mode.

3. Press [2] button on the remote control unit.

4. Press [CHANNEL UP/DOWN] buttons on the remote control unit so that the color analyzer value becomes minimum.

5. To cancel or to exit from the VCOM Adjustment, press [CH RETURN] or [PREV CH] button.

[7] button

V-ramp mode

[7] button

White 20% mode

Note:

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

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

Note: Execute the VCOM adjustment within 2 minutes after you turn the power on.

5-2 PL12.2_A (LC10)EA

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

3. White Balance Adjustment

Purpose: To mix red and blue beams correctly for

pure white. Symptom of Misadjustment: White becomes bluish

or reddish.

6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal (Single)” appears in the upper right of the screen as shown below.)

Internal (Single)

ITEM

Color temperature

Input Signal

SPECIFICATION

x= 0.272 ± 0.002 y= 0.278 ± 0.002

Internal pattern (40/80% raster)

Measurement point Screen center

CA-310 (KONICA MINOLTA

M. EQ.

Luminance meter) or measuring instrument as good as CA-310.

60min.

Aging time

(Retail MODE/100IRE Raster HDMI 1080i@60)

MODE setting of TV

Ambient temperature

Shipment setting/ Retail MODE

25°C ± 5°C

1. Operate the unit for more than 60 minutes.

2. Enter the service mode.

3. Press [VOLUME DOWN] button three times on the remote control unit to select “Drive setting” mode. “Drive” appears in the screen.

4. Set the color analyzer at the CHROMA mode and zero point calibration. Bring the optical receptor pointing at the center of the LCD-Panel.

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

Perpendicularity

Color Analyzer

Note: The optical receptor must be set perpendicularly to the LCD Panel surface.

5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.)

HDB 0

7. Press [CHANNEL UP/DOWN] buttons to adjust the color temperature becomes 12000°K (x

0.272 / y= 0.278 ± 0.002).

8. Press [1] button to select the “HDR” for High Drive Red adjustment (“HDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

9. If necessary, adjust the “HDB” or “HDR” again.

10. Press [6] button to select the “LDB” for Low Drive Blue adjustment (“LDB” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

Internal (Single)

LDB 0

11. Press [4] button to select the “LDR” for Low Drive Red adjustment (“LDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

12. If necessary, adjust the “LDB” or “LDR” again.

13. Press [VOLUME DOWN] button to shift to the “Debugging Message” mode. If there is no message under “[WB]” section, this adjustment completes. If “Drive settings are NG. Retry.” is displayed, repeat above steps from 5. to 12. Then check “Debugging Message” again. If “Drive settings are NG. Retry.” is displayed, replace the LCD Panel or Digital Main CBA.

14. To cancel or to exit from the White Balance Adjustment, press [CH RETURN] or [PREV CH] button.

5-3 PL12.2_A (LC10)EA

[TYPE B]

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

Note: Electrical adjustments are required after

Test Equipment Required

1. Remote control unit

2. Color Analyzer, CA-310 (KONICA MINOLTA Luminance meter) or measuring instrument as good as CA-310.

How to set up the service mode:

Service mode:

1. Turn the power on.

2. Press [0], [6], [2], [5], [9], [6], and [INFO] buttons on the remote control unit in this order. The following screen appears.

"*" differs depending on the models.

[current] File code: Total checksum: Panel-Option code:

Press "POWER" key to exit.

MAC address: ESN:

Tuner: HDMI UART: Touch Sensor Ver: EDID:

***_*

***-**** Push "0" key

**-***-***-***-***-*** ***-***-***-***-***

**** OFF

-.-- / --Push "0" key

**:**:**:**:**:** *****************************

TotalWatchTime: SystemTime: Lightsensor:

***** **:** **

5-4 PL12.2_B (A27F5UH)_EA

1. Purity Check Mode

2. VCOM Adjustment

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 the [7] button on the remote control unit is pressed, the display changes as follows.

Purity Check Mode

White mode

[7] button

Black mode

[7] button

White 50% mode

[7] button

Red, Green, Blue mode

Test Point Adj. Point

Screen

[CHANNEL UP/DOWN]

buttons

M. EQ. Spec.

Color analyzer See below

Figure

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

Perpendicularity

Color Analyzer

2. Enter the service mode.

3. Press [2] button on the remote control unit.

4. Press [CHANNEL UP/DOWN] buttons on the remote control unit so that the color analyzer value becomes minimum.

5. To cancel or to exit from the VCOM Adjustment, press [CH RETURN] or [PREV CH] button.

[7] button

V-ramp mode

[7] button

White 20% mode

Note:

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

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

Note: Execute the VCOM adjustment within 2 minutes after you turn the power on.

5-5 PL12.2_B (A27F5UH)_EA

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

3. White Balance Adjustment

Purpose: To mix red and blue beams correctly for

pure white. Symptom of Misadjustment: White becomes bluish

or reddish.

5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.)

6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal (Single)” appears in the upper right of the screen as shown below.)

Internal (Single)

ITEM

Color temperature

Input Signal

SPECIFICATION

x= 0.272 ± 0.002 y= 0.278 ± 0.002

Internal pattern (30/50/80% raster)

Measurement point Screen center

CA-310 (KONICA MINOLTA

M. EQ.

Luminance meter) or measuring instrument as good as CA-310.

60min.

Aging time

(Retail MODE/100IRE Raster HDMI 1080i@60)

MODE setting of TV

Ambient temperature

Shipment setting/ Retail MODE

25°C ± 5°C

1. Operate the unit for more than 60 minutes.

2. Enter the service mode.

3. Press [VOLUME DOWN] button three times on the remote control unit to select “Drive setting” mode. “Drive” appears in the screen.

4. Set the color analyzer at the CHROMA mode and zero point calibration. Bring the optical receptor pointing at the center of the LCD-Panel.

HDB 0

7. Press [CHANNEL UP/DOWN] buttons to adjust the color temperature becomes 12000°K (x

0.272 / y= 0.278 ± 0.002).

8. Press [1] button to select the “HDR” for High Drive Red adjustment (“HDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

9. If necessary, adjust the “HDB” or “HDR” again.

10. Press [6] button to select the “MDB” for Middle Drive Blue adjustment (“MDB” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

Internal (Single)

MDB 0

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

Perpendicularity

Color Analyzer

Note: The optical receptor must be set perpendicularly to the LCD Panel surface.

11. Press [4] button to select the “MDR” for Middle Drive Red adjustment (“MDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

12. If necessary, adjust the “MDB” or “MDR” again.

5-6 PL12.2_B (A27F5UH)_EA

+ 54 hidden pages