Funai FL-9.4 Service Manual

LCD TV/DVD

chassis FL9.4

SERVICE MANUAL

Contents

32” 32MD359B/F7 MAGNAVOX 32” 32MD359B/F7 MAGNAVOX 32” LD320SSX SYLVANIA Limited 32” LD320SSX SYLVANIA Limited 37” 37MD359B/F7 MAGNAVOX 37” 37MD359B/F7 MAGNAVOX 37” LD370SSX SYLVANIA Limited 32” 32MD350B/F7 MAGNAVOX 32” LD320SS1 SYLVANIA Limited 37” 37MD350B/F7 MAGNAVOX 37” 37MD350B/F7 MAGNAVOX

(Serial No. : DS1A**********) (Serial No. : DS2A**********) (Serial No. : DS1A**********) (Serial No. : DS2A**********) (Serial No. : DS2A**********) (Serial No. : DS3A**********)

(Serial No. : DS1A**********) (Serial No. : DS2A**********)

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.

A94F0UH/F7UH/F1UH/F8UH/G2UH/G4UH/G3UH/A9DF0UH/A9DF1UH/A9DG0UH/A9DG2UH

100721

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.

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.

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

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Schematic Diagrams / CBA and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1

SPECIFICATIONS

< LCD TV Section >

< 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 Resolusion

2. Brightness (w / filter) --- cd/m

3. Viewing Angle

Horizontal

Vert ical

Horizontal

Vert ical

dBµ dBµ dBµ

dBm dBm dBm

pixels pixels

° °

18 18 18

---

1366

768 320

[32MD359B/F7,

LD320SSX]

310

[32MD350B/F7,

LD320SS1]

430

[37MD359B/F7,

LD370SSX]

250

[37MD350B/F7]

-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)

< 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 0 dBfs)

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

3. Audio Freq. Response (NTSC)

Horizontal

Vert ical

--x y

Horizontal

Vert ical

Lch/Rch W 10.0/10.0 9.0/9.0

6dB: Lch

6dB: Rch

1-1 A9DF1SP

% %

°K 12000

line line

Hz Hz

5 5

0.272

0.278 400

350

70 to 10 k 70 to 10 k

5±5 5±5

--±3% ±3%

---

< DVD >

Description Condition Unit Nominal Limit

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

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

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

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

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.

L, 20 Hz

R, 20 Hz

L, 20 kHz

R, 20 kHz

% 0.03 0.07

dB 0 +4/-5

dB 85 75

1-2 A9DF1SP

LASER BEAM SAFETY PRECAUTIONS

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

Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin.

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

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

Drive Mechanism Assembly

Laser Beam Radiation

Laser Pickup

Turntable

Location: Top of LCD module.

2-1 TVDVDN_LBSP

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

3-1 LTVN_ISP

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

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

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

1.0 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.

3-2 LTVN_ISP

Precautions during Servicing

A. Parts identified by the # symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

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

C. Use specified internal wiring. Note especially:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads

D. Use specified insulating materials for hazardous

live parts. Note 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.

3-3 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

Table 2: Leakage current ratings for selected areas

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

110 to 130 V

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

U.S.A. or

Canada

0.15 µF CAP. & 1.5 kΩ

RES. Connected in parallel

3-4 LTVN_ISP

i ≤ 0.5 mA rms

Fig. 2

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.

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)

Pin 1

Instructions for Connectors

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

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

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Fig. S-1-1

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

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

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

CAUTION:

1. The Flat Pack-IC shape may differ 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

4-1 TVDVDN_SN

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

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

Hot-air Flat Pack-IC Desoldering

CBA

Machine

With Soldering Iron:

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

Flat Pack-IC

Desoldering Braid

Soldering Iron

Fig. S-1-3

Masking Ta pe

Tweezers

Flat Pack-IC

Fig. S-1-2

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

Sharp Pin

Fine Tip Soldering Iron

Fig. S-1-4

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

4-2 TVDVDN_SN

With Iron Wire:

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

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

3. While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact 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

4-3 TVDVDN_SN

Instructions for Handling Semiconductors

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

1. Ground for Human Body

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

2. Ground for Workbench

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

1MΩ

CBA

Grounding Band

1MΩ

CBA

Conductive Sheet or Copper Plate

4-4 TVDVDN_SN

CABINET DISASSEMBLY INSTRUCTIONS

[32MD359B/F7, LD320SSX, 32MD350B/F7, LD320SS1]

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.

[1] Stand

Assembly

[13] Junction CBA

[2] Rear Cabinet

[3] DVD Main CBA Unit

[4] DVD Mechanism

[5] DVD Holder

[6] Inverter CBA

[7] Jack CBA

[8] Power Supply CBA

[11] Speaker Holder (L,R)

[12] Speaker

[14] IR Sensor CBA

[15] Function CBA

Removal

Step/

Loc.

No.

Part

Fig.

Remove/*Unhook/

Unlock/Release/

No.

Unplug/Unclamp/

Desolder

DVD Main

[3]

CBA UnitD2D5

DVD

[4]

Mechanism

4(S-5), (S-6), *CN201, *CN301, *CN801, *CN901, *CN902

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

[5] DVD Holder D2 4(S-7) ---

6(S-8), *CN1001,

[6]

Inverter CBA

*CN1003, *CN1050,

*CN1100, *CN1150, *CN1200, *CN1900

[7] Jack CBA

Power

[8]

Supply CBA

*2(S-9), *CL701B ---

7(S-10), *CN101,

*CN301, *CN302,

*CN303, *CN801, *CN802

[9] Jack Holder D3 2(S-11) ---

Note

2 3 4 5 6

---

[9] Jack Holder

[10] Digital Main CBA Unit

[16] LCD Module Assembly

[17] Front Cabinet

2. Disassembly Method

Removal

Step/

Loc.

No.

[1]

[2]

Part

Stand Assembly

Rear Cabinet

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Desolder

D1 4(S-1) ---

D1 13(S-2), 2(S-3), 3(S-4) ---

Note

Digital Main

[10]

CBA UnitD3D5

4(S-12), (S-13), 4(S-14), *CN3902, Shield Box

---

Speaker

[11]

Holder

D4 *Hook ---

(L,R)

[12] Speaker D4 8(S-15) ---

[13]

[14]

[15]

Junction CBA

IR Sensor CBA

Function CBA

Desolder ---

D5 D4

2(S-16), *CL103C ---

D5 D4

3(S-17) ---

LCD

[16]

Module

D4 (S-18) ---

Assembly Front

[17]

↓

(1)

Cabinet

↓

(2)

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

↓

(3)

↓

(4)

(5)

↓

5-1 A94F1DC

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

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

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

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

Table."

Reference Notes

1. CAUTION 1: Electrostatic breakdown of the laser

diode in the optical system block may occur as a

potential difference caused by electrostatic charge

accumulated on cloth, human body etc., during

unpacking or repair work.

To avoid damage of pickup follow next procedures.

1) Short the three short lands of FPC cable with solder before removing the FFC cable (CN201) from it. If you disconnect the FFC cable (CN201), the laser diode of pickup will be destroyed. (Fig. D2)

2) Disconnect the Connectors (CN301), and (CN801). Remove Screw (S-6) and remove the DVD Main CBA Unit. (Fig. D2)

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

screws A as shown in Fig. D2.

b. To avoid damage of the pickup unit (laser

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

c. Connect the FFC cables of the new DVD

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

d. After confirming that the FFC cables are

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

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

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

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

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

5. How to eject manually 1

1) Remove the Rear Cabinet.

2) Rotate the gear in the direction of the arrow as

shown below.

View for B

The gear is turned to the direction of the arrow.

6. How to eject manually 2

1) Remove the Rear Cabinet.

2) To remove the DVD Main CBA Unit, remove a

screw (S-6) in Fig. D2. Do not disconnect connectors.

3) To remove the Chassis Cover, remove two

screws A as shown in Fig. D2.

4) Remove a disc.

5-2 A94F1DC

(S-4)

(S-2)

[2] Rear Cabinet

[1] Stand Assembly

(S-2)

(S-1)

(S-3)

(S-4)

(S-2)

(S-4)

(S-2)

Fig. D1

5-3 A94F1DC

(S-7)

(S-6)

[3] DVD Main CBA Unit

[4] DVD Mechanism

[5] DVD Holder

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

Chassis Cover

Pin A

Either of two places

(S-5)

Screws A

FPC Cable

View for A

Hole A

Main Chassis

Fig. D2

5-4 A94F1DC

[6] Inverter CBA

(S-8)

(S-14)

[10] Digital Main CBA Unit

(S-11)

[7] Jack CBA

Shield Box

[9] Jack Holder

(S-9)

(S-12)

(S-13)

(S-12)

(S-10)

(S-8)

[8] Power Supply CBA

Fig. D3

5-5 A94F1DC

[17] Front Cabinet

[16] LCD Module Assembly

Hook

[13] Junction CBA

(S-15)

[12] Speaker

[11] Speaker Holder (L)

(S-18)

Hook

[11] Speaker Holder (R)

[14] IR Sensor CBA

(S-16)

(S-15)

[12] Speaker

[15] Function CBA

(S-17)

Fig. D4

5-6 A94F1DC

TV Cable Wiring Diagram

DVD Main CBA Unit

Jack CBA

CL701B

CN303

CN302

CN601

CL701A

CN201

CN902

CN901

CN301

CN801

CN401

To DVD Mechanism

Power Supply CBA

CN201

CN602

Inverter CBA

CN1001

CN1900

CN1050

CN1100

CN1150

CN1200

CN301

CN101

Digital Main CBA Unit

CN4001

CN3702

CN3701

CN3902

To LCD Module Assembly

CN802

CN801

To Speaker

CN101

IR Sensor CBA

CL103C

AC CORD

Junction CBA

CL102A

CL101B

CN1003

To LCD Module Assembly

Function CBA

CL103B

Fig. D5

5-7 A94F1DC

CABINET DISASSEMBLY INSTRUCTIONS

[37MD359B/F7, LD370SSX, 37MD350B/F7]

1. Disassembly Flowchart

[1] Stand

Assembly

[15] Junction CBA

[11] Jack Holder

[12] Digital Main CBA Unit

[2] Rear Cabinet

[3] DVD Main CBA Unit

[4] DVD Mechanism

[5] DVD Holder

[13] Speaker Holder (L,R)

[14] Speaker

[16] IR Sensor CBA

[17] Function CBA

[6] AC Inlet Holder

[7] Stand Hinge

[8] Inverter CBA

Removal

Step/

Loc.

No.

Part

Fig.

Remove/*Unhook/

Unlock/Release/

No.

Unplug/Unclamp/

Desolder

DVD

[4]

Mechanism

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

[5] DVD Holder D2 4(S-6) ---

AC Inlet

[6]

[7]

Holder Stand

Hinge

D3 (S-7), *CN601 ---

D3 3(S-8) ---

7(S-9), *CN1001, *CN1003, *CN1050,

*CN1100, *CN1150,

*CN1200, *CN1250,

[8]

Inverter CBA

*CN1300, *CN1900

[9] Jack CBA

Power

[10]

Supply CBA

*2(S-10), *CL701B ---

9(S-11), *CN101, *CN301, *CN302,

*CN303, *CN801,

*CN802

Note

2 3 4 5 6

---

[18] LCD Module Assembly

[19] Front Cabinet

2. Disassembly Method

Removal

Step/

Loc.

No.

Stand

[1]

Assembly Rear

[2]

Cabinet

DVD Main

[3]

CBA UnitD2D5

Part

Remove/*Unhook/

Fig.

No.

Unlock/Release/

Unplug/Unclamp/

Desolder

D1 3(S-1) ---

D1 15(S-2), 2(S-3) ---

4(S-4), (S-5), *CN201, *CN301, *CN801, *CN901, *CN902

[9] Jack CBA

[10] Power Supply CBA

Note

[11] Jack Holder D3 2(S-12) ---

Digital Main

[12]

CBA UnitD3D5

4(S-13), 2(S-14), 4(S-15), *CN3902, Shield Box

---

Speaker

[13]

Holder

D4 *Hook ---

(L,R)

[14] Speaker D4 8(S-16) ---

[15]

[16]

[17]

Junction CBA

IR Sensor CBA

Function CBA

Desolder ---

D5 D4

2(S-17), *CL103C ---

D5 D4

2(S-18) ---

LCD

[18]

Module

D4 (S-19) ---

Assembly Front

[19]

↓

(1)

Cabinet

↓

(2)

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

↓

(3)

↓

(4)

(5)

↓

5-8 A94G2DC

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

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

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

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

Table."

Reference Notes

1. CAUTION 1: Electrostatic breakdown of the laser

diode in the optical system block may occur as a

potential difference caused by electrostatic charge

accumulated on cloth, human body etc., during

unpacking or repair work.

To avoid damage of pickup follow next procedures.

1) Short the three short lands of FPC cable with solder before removing the FFC cable (CN201) from it. If you disconnect the FFC cable (CN201), the laser diode of pickup will be destroyed. (Fig. D2)

2) Disconnect the Connectors (CN301), and (CN801). Remove Screw (S-6) and remove the DVD Main CBA Unit. (Fig. D2)

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

screws A as shown in Fig. D2.

b. To avoid damage of the pickup unit (laser

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

c. Connect the FFC cables of the new DVD

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

d. After confirming that the FFC cables are

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

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

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

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

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

5. How to eject manually 1

1) Remove the Rear Cabinet.

2) Rotate the gear in the direction of the arrow as

shown below.

View for B

The gear is turned to the direction of the arrow.

6. How to eject manually 2

1) Remove the Rear Cabinet.

2) To remove the DVD Main CBA Unit, remove a

screw (S-6) in Fig. D2. Do not disconnect connectors.

3) To remove the Chassis Cover, remove two

screws A as shown in Fig. D2.

4) Remove a disc.

5-9 A94G2DC

(S-3)

(S-2)

[2] Rear Cabinet

[1] Stand Assembly

(S-2)

(S-1)

(S-2)

Fig. D1

5-10 A94G2DC

(S-6)

(S-5)

[3] DVD Main CBA Unit

[4] DVD Mechanism

[5] DVD Holder

(S-4)

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

Chassis Cover

Either of two places

FPC Cable

View for A

Pin A

Screws A

Hole A

Main Chassis

Fig. D2

5-11 A94G2DC

[9] Jack CBA

[8] Inverter CBA

(S-9)

(S-11)

[12] Digital Main CBA Unit

(S-12)

(S-15)

[11] Jack Holder

(S-10)

(S-11)

[10] Power Supply CBA

Shield Box

(S-14)

(S-7)

(S-8)

[7] Stand Hinge

[6] AC Inlet Holder

(S-13)

Fig. D3

5-12 A94G2DC

[19] Front Cabinet

[18] LCD Module Assembly

[14] Speaker

[13] Speaker Holder (L)

Hook

(S-16)

[14] Speaker

(S-19)

[15] Junction CBA

[16] IR Sensor CBA

(S-17)

Hook

(S-16)

[13] Speaker Holder (R)

[17] Function CBA

(S-18)

Fig. D4

5-13 A94G2DC

TV Cable Wiring Diagram

DVD Main CBA Unit

CN301

CN201

CN801

Jack

CN601

CBA

CN401

To DVD Mechanism

Inverter CBA

CN1050

CN1100

Power Supply CBA

CL701B

CN303

CN302

CN301

CN101

Digital Main CBA Unit

CN4001

CN901

CL701A

CN902

CN802

To Speaker

CN601

CN801

Junction CBA

CN101

CN201

CN602

AC CORD

To AC Inlet

CL102A

CN1001

CN1900

CN1150

CN1200

CN1250

CN1003

CN1300

To LCD Module Assembly

CN3702

CN3701

CN3902

To LCD Module Assembly

IR Sensor CBA

CL103C

CL102B

5-14 A94G2DC

Function CBA

CL103B

Fig. D5

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

2. Remote control unit

3. Color Analyzer

How to make the Service remote control unit: [ 32MD359B/F7, 37MD359B/F7, 32MD350B/F7, 37MD350B/F7 ]

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

service button (There is a button under the plastic housing.)

[ LD320SSX, LD370SSX, LD320SS1 ]

Cut “A” portion of the attached remote control unit as shown in Fig. 2.

service button

Fig. 2

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. The following screen appears.

"*" differs depending on the models.

Code :

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

Pic code :

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

MIPS :

Push 0key

Tuner :

****-*****-**** safety_Non

Safety :

Fig. 1

6-1 FL9.4EA

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

Purity Check Mode

White mode

[7] button

Black mode

[7] button

Red mode

[7] button

Green mode

[7] button

Blue mode

Test Point Adj. Point

Screen

[CHANNEL UP/DOWN ]

buttons

M. EQ. Spec.

Color analyzer See below

Figure

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

Perpendicularity

L = 3 cm

Color Analyzer

1. Operate the unit for more than 20 minutes.

2. Set the color analyzer 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.

3. Enter the Service mode.

4. Press [3] button on the service remote control unit.

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

[7] button

White 20% mode

Note:

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

6-2 LC7NEA

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