LG LHD625 Schematic

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SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.

Internal Use Only

Website http://biz.lgservice.com

DVD Home Theater System

JUNE, 2015P/NO : AFN77133590

MODEL: LHD625 (LHD625, S63S1-S, S63T1-C, S75T1-W)

MODEL: LHD625

(LHD625, S63S1-S, S63T1-C, S75T1-W)

CONTENTS

SECTION 1 ........ SUMMARY

SECTION 2 ........ ELECTRICAL

SECTION 3 ........ CABINET & MAIN CHASSIS

SECTION 4 ........ REPLACEMENT PARTS LIST

1-1

SECTION 1

SUMMARY

CONTENTS

SERVICING PRECAUTIONS ............................................................................................................................ 1-3

ESD PRECAUTIONS ......................................................................................................................................... 1-5

HIDDEN KEY MODE ......................................................................................................................................... 1-6

FIRMWARE UPGRADE GUIDE ........................................................................................................................ 1-8

SPECIFICATIONS ........................................................................................................................................... 1-10

1-2

SERVICING PRECAUTIONS

NOTES REGARDING HANDLING OF THE PICK-UP

1. Notes for transport and storage

1) The pick-up should always be left in its conductive bag until immediately prior to use.

2) The pick-up should never be subjected to external pressure or impact.

Storage in conductive bag

Drop impact

2. Repair notes

1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.

2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board.

3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched.

4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.

NEVER look directly at the laser beam, and don’t allow contact with fingers or other exposed skin.

5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort lens.

Pressure

Magnet

How to hold the pick-up

Cotton swab

Conductive Sheet

6) Never attempt to disassemble the pick-up. Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

1-3

Pressure

NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1. Preparations

1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care.

2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnetism is present, or where there is excessive dust.

2. Notes for repair

1) Before replacing a component part, first disconnect the power supply lead wire from the unit

2) All equipment, measuring instruments and tools must be grounded.

3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.)

4) To prevent AC leakage, the metal part of the soldering iron should be grounded.

5) Workers should be grounded by an armband (1 M)

6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband.

7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.

Armband

Resistor (1 M)

CAUTION: CLASS 1M VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN. DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS

Use of controls, adjustments or the performance of procedures other than those specified herein may result in hazardous radiation exposure.

Conductive Sheet

1-4

ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices.

6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER

SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

1-5

HIDDEN KEY MODE

1. DISPLAY SYSTEM INFORMATION

1) Change function to DVD/CD by pressing input key, and wait until home menu is shown.

- Do not insert disc or USB at the set.

2) Go to SETUP menu by pressing SETUP button in HOME menu.

3) Move highlight at "DISPLAY -> TV Aspect -> 16:9".

4) Press "1 -> 3 -> 9 -> 7 -> 1 -> 3 -> 9 -> ENTER" in order.

5) and then, system reset menu is displayed.

6) Power off and on by pressing POWER key.

1-6

2. EEPROM EDIT

1) Change function to DVD/CD by pressing input key, and wait until home menu is shown.

- Do not insert disc or USB at the set.

2) Press "PAUSE -> 1 -> 4 -> 7 -> 2" in order.

3) and then, option setting menu is displayed. You can see 10 bytes option value.

4) Move a cursor by pressing Arrow < > key.

5) Press number 0 ~ 9, character a ~ f (1 ~ 6 for a while) for more than 5 seconds

6) Press "PAUSE" key to exit option setting menu.

After change option value, you need to make system reset.

3. DOOR LOCK / UNLOCK

1) Press Front “STOP” + Remote control “STOP” for more than 5 seconds.

2) “LOCKED” / “UNLOCKED” display on the VFD.

1-7

FIRMWARE UPGRADE GUIDE

1. MPEG

1) Copy ﬁ rmware to USB (Do not change ﬁ le name). Ex) LG_LHD655LD7_1501051.rom

2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.

3) Inset USB device which includes ﬁ rmware.

4) Firmware is detected automatically and then, shows blue screen in TV.

 If home menu is maintained after inserting USB, press music icon.

5) Take off the USB and press PLAY key.

6) and then, upgrading is started.

- Do not turn off the set until upgrade is ﬁ nished.

7) After ﬁ nishing ﬁ rmware upgrading, set will restart automatically.

8) Power off and on again by pressing POWER key.

1-8

2. AUDIO MICOM

1) Copy ﬁ rmware to USB (Do not change ﬁ le name).

Ex) LHD655_1501050.HEX

2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.

3) Inset USB device which includes ﬁ rmware.

4) Firmware is detected automatically and then, shows blue screen in TV.

 If home menu is maintained after inserting USB, press music icon.

5) Upgrading is started.

- Do not turn off the set until upgrade is ﬁ nished.

- Do not pull out the USB device using ﬁ rmware upgrading.

6) After ﬁ nishing ﬁ rmware upgrading, set will be turned off.

3. EQ

1) Copy ﬁ rmware to USB (Do not change ﬁ le name).

Ex) EQ_PRG.BIN

2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.

3) Inset USB device which includes ﬁ rmware.

4) Firmware is detected automatically and then, shows blue screen in TV.

 If Home menu is maintained after inserting USB, press music icon.

5) Upgrading is started.

- Do not turn off the set until upgrade is ﬁ nished.

- Do not pull out the USB device using ﬁ rmware upgrading.

6) After ﬁ nishing ﬁ rmware upgrading, set will be turned off.

1-9

SPECIFICATIONS

• GENERAL

Power requirements Refer to main label.

Power consumption Refer to main label.

Networked standby 0.4 W (If all network ports are activated.)

Dimensions (W x H x D) (360 x 60.5 x 299) mm without foot

Net Weight (Approx.) 2.69 kg

Operating temperature 5 °C to 35 °C

Operating humidity 5 % to 90 %

Bus Power Supply 5 V 500 mA

• INPUTS/ OUTPUTS

VIDEO OUT 1.0 V (p-p), 75 Ω, sync negative, RCA jack x 1

HDMI OUT (video/audio) 19 pin (Type A, HDMI™ Connector ) x 1

ANALOG AUDIO IN 2.0 Vrms (1 kHz, 0 dB), 600 Ω, RCA jack (L, R) x 1

DIGITAL IN (OPTICAL) 3 V (p-p), Optical jack x 1

PORT. IN 0.5 Vrms (3.5 mm stereo jack) x 1

• AMPLIFIER

Stereo mode 167 W + 167 W (3 Ω at 1kHz)

Surround mode Front 167 W + 167 W (3 Ω at 1 kHz)

Center 167 W (3 Ω at 1 kHz)

Surround 167 W + 167 W (3 Ω at 1 kHz))

Subwoofer 167 W (3 Ω at 60 Hz)

• TUNER

FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz

1-10

• SPEAKERS

Front Speaker

Type 1 Way 1 speaker

Impedance Rated 3 Ω

Input Power 167 W

Max. Input Power 334 W

Net Dimensions (W x H x D) (88 x 122 x 81) mm

Net Weight 0.5 kg

Rear Speaker

Type 1 Way 1 speaker

Impedance Rated 3 Ω

Input Power 167 W

Max. Input Power 334 W

Net Dimensions (W x H x D) (88 x 122 x 81) mm

Net Weight 0.5 kg

Center Speaker

Type 1 Way 1 speaker

Impedance Rated 3 Ω

Input Power 167 W

Max. Input Power 334 W

Net Dimensions (W x H x D) (260 x 93 x 74) mm

Net Weight 0.6 kg

Passive Subwoofer

Type 1 Way 1 speaker

Impedance Rated 3 Ω

Input Power 167 W

Max. Input Power 334 W

Net Dimensions (W x H x D) (190 x 385 x 318) mm

Net Weight 5.0 kg

• Design and specifications are subject to change without notice.

1-11

1-12

SECTION 2

ELECTRICAL

CONTENTS

DIGITAL DISPLAY & MEDIA TRAINING MASTER ......................................................................................... 2-2

1. DISTORTED PICTURE ........................................................................................................................... 2-2

2. NO PICTURE .......................................................................................................................................... 2-7

3. PICTURE COLOR ................................................................................................................................. 2-12

4. NOISE/AUDIO PROBLEMS .................................................................................................................. 2-14

5. MISCELLANEOUS ................................................................................................................................ 2-17

ONE POINT REPAIR GUIDE .......................................................................................................................... 2-26

1. NO POWER PROBLEM ....................................................................................................................... 2-26

2. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE ON FRONT PANEL.................... 2-28

3. BAD HDMI VIDEO / AUDIO OUTPUT .................................................................................................. 2-34

4. NO AUDIO FROM SPEAKER ............................................................................................................... 2-35

5. NO USB ................................................................................................................................................ 2-36

6. BT CONNECTION ERROR .................................................................................................................. 2-37

ELECTRICAL TROUBLESHOOTING GUIDE ................................................................................................. 2-38

1. SYSTEM POWER SUPPLY ON SMPS BOARD .................................................................................. 2-38

2. POWER SUPPLY ON MAIN BOARD ................................................................................................... 2-41

3. SYSTEM PART ..................................................................................................................................... 2-43

4. NO HDMI OUTPUT ............................................................................................................................... 2-45

5. NO AUDIO OUTPUT ............................................................................................................................ 2-46

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....................................................... 2-47

1. SYSTEM PART (MPEG CRYSTAL 27 MHz) ....................................................................................... 2-47

2. SDRAM CLOCK .................................................................................................................................... 2-48

3. VIDEO PART (100% FULL COLOR-BAR) ........................................................................................... 2-48

4. HDMI PART .......................................................................................................................................... 2-49

5. SERVO OPEN/CLOSE SIGNAL ........................................................................................................... 2-50

WIRING DIAGRAM .......................................................................................................................................... 2-59

BLOCK DIAGRAM .......................................................................................................................................... 2-61

CIRCUIT DIAGRAMS ...................................................................................................................................... 2-63

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 2-63

2. MAIN & AMP - MPEG CIRCUIT DIAGRAM ......................................................................................... 2-65

3. MAIN & AMP - SERVO CIRCUIT DIAGRAM ....................................................................................... 2-67

4. MAIN & AMP - I/O CIRCUIT DIAGRAM ............................................................................................... 2-69

5. MAIN & AMP - MICOM CIRCUIT DIAGRAM........................................................................................ 2-71

6. MAIN & AMP - PWM CIRCUIT DIAGRAM ........................................................................................... 2-73

7. MAIN & AMP - AMP CIRCUIT DIAGRAM ............................................................................................ 2-75

8. JACK CIRCUIT DIAGRAM ................................................................................................................... 2-77

9. FRONT CIRCUIT DIAGRAM ................................................................................................................ 2-79

CIRCUIT VOLTAGE CHART ........................................................................................................................... 2-81

1. ICs ......................................................................................................................................................... 2-81

2. CAPACITORS ....................................................................................................................................... 2-81

3. CONNECTORS ..................................................................................................................................... 2-82

PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 2-83

1. SMPS P. C. BOARD ............................................................................................................................. 2-83

2. MAIN & AMP P. C. BOARD .................................................................................................................. 2-85

3. JACK P. C. BOARD .............................................................................................................................. 2-87

4. FRONT P. C. BOARD ........................................................................................................................... 2-87

2-1

DIGITAL DISPLAY & MEDIA TRAINING MASTER

Objective: To provide clear and concise guidelines for customer service agents to handle calls on

box goods calls.

1. DISTORTED PICTURE 1-1. Lines on Picture

Distorted picture refers to the customer getting video, but there is a problem with the video.

Determine what cables the customer is using to connect

What cables is

the customer using to

connect the DVD?

YES

the DVD to the TV and if connected properly. Refer to OM for

connections. Tighten any loose cables. Make sure the customer

is not connecting a DVD to VCR.

Copy protection can distort the picture on older DVD models.

Is the TV set

to the correct input?

YES

Do lines appear when

watching multiple discs?

YES

Do lines appear when

watching a TV program?

YES

Do lines appear

when the DVD is

connected to another TV?

Make sure the TV is on the correct input.

Turn TV off, then on to determine input.

Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Multiple discs displaying the problem could indicate the DVD lens

needs to be cleaned. Recommend the customer use a lens cleaner on the DVD. A lens cleaner is available at any local

electronics retailer.

Lines appearing when watching a TV program indicates

an issue with the display. If the TV program is fine,

then connect the DVD to another input on the display to

determine if the problem is following the DVD.

Connect the DVD to another TV and play a disc.

No lines during disc play back indicates a problem with the first TV.

Please refer to the owners manual for instructions on how to

connect the DVD to a TV. If the DVD has a problem on the

second TV, then see service chart for service information.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-2

DIGITAL DISPLAY & MEDIA TRAINING MASTER

1-2. Ghost Picture

Distorted picture refers to the customer getting video, but there is a problem with the video.

Determine what cables the customer is using to connect the DVD to

What cables is the customer

using to connect the DVD?

YES

the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting a

DVD to VCR or DVD. Copy protection can distort

the picture on older VCR models.

Is the TV set to

the correct input?

YES

Do ghosting appear when

watching multiple discs?

YES

Do lines appear when

watching a TV program?

YES

Does ghosting

appear when the DVD is

connected to another TV?

Make sure the TV is on the correct input. Turn TV off,

then on to determine input. Video when using composite,

or component. DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Multiple discs displaying the problem could indicate the DVD lens

needs to be cleaned. Recommend the customer use a lens cleaner

on the DVD. A lens cleaner is available at any local electronics retailer.

Ghosting appearing when watching a TV program indicates an

issue with the display. If the TV program is fine, then connect

the DVD to another input on the display to determine

if the problem is following the DVD.

Connect the DVD to another TV and play a disc.

No ghosting during disc play back indicates a problem with the first TV.

Please refer to the owners manual for instructions on how to

connect the DVD to a TV. If the DVD has a problem on the second TV,

then see service chart for service information.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-3

DIGITAL DISPLAY & MEDIA TRAINING MASTER

1-3. Rolling Picture

Distorted picture refers to the customer getting video, but there is a problem with the video.

Determine what cables the customer is using to connect the DVD to

What cables is the customer

using to connect the DVD?

YES

the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting

a DVD to VCR. Copy protection can distort

the picture on older VCR models.

Is the TV set to

the correct input?

YES

Does rolling appear when

watching multiple discs?

YES

Does rolling appear when

watching a TV program?

YES

Does rolling appear

when the DVD is connected to

another TV?

Make sure the TV is on the correct input. Turn TV off,

then on to determine input. Video when using composite,

or component. DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Multiple discs displaying the problem could indicate the DVD lens

needs to be cleaned. Recommend the customer use a lens cleaner

on the DVD. A lens cleaner is available at any local electronics retailer.

Rolling appearing when watching a TV program indicates

an issue with the display. If the TV program is fine, then connect

the DVD to another input on the display to determine if the problem

is following the DVD.

Connect the DVD to another TV and play a disc. No lines during disc

playback indicates a problem with the first TV.

Please refer to the owners manual for instructions on how to connect the

DVD to a TV. If the DVD has a problem on the second TV,

then see service chart for service information.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables. A bad cable can also

cause video problems. Test the cable with another device to the TV

to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-4

DIGITAL DISPLAY & MEDIA TRAINING MASTER

1-4. Shaky Picture

Distorted picture refers to the customer getting video, but there is a problem with the video.

Determine what cables the customer is using to connect the DVD to

What cables is the customer

using to connect the DVD?

YES

the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables.

Make sure the customer is not connecting a DVD.

Copy protection can distort the picture on older VCR models.

Is the TV set to

the correct input?

YES

Does shaking appear when

watching multiple discs?

YES

Does shaking appear when

watching a TV program?

YES

Does shaking appear

when the DVD is connected to

another TV?

Make sure the TV is on the correct input. Turn TV off, then on

to determine input. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Multiple discs displaying the problem could indicate the DVD lens

needs to be cleaned. Recommend the customer use a lens cleaner

on the DVD. A lens cleaner is available at any local electronics retailer.

Shaking appearing when watching a TV program indicates an issue with

the display. If the TV program is fine, then connect the DVD to another

input on the display to determine if the problem is following the DVD.

Connect the DVD to another TV and play a disc. No shaking during

disc play back indicates a problem with the first TV. Please refer to

the owners manual for instructions on how to connect the DVD to a TV.

If the DVD has a problem on the second TV,

then see service chart for service information.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-5

DIGITAL DISPLAY & MEDIA TRAINING MASTER

1-5. Blurry Picture

Distorted picture refers to the customer getting video, but there is a problem with the video.

Determine what cables the customer is using to connect the DVD to

What cables is the customer

using to connect the DVD?

YES

the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting

a DVD to VCR. Copy protection can distort

the picture on older VCR models.

Is the TV set to

the correct input?

YES

Does blurriness appear when

watching multiple discs?

YES

Does blurriness appear when

watching a TV program?

YES

Does blurriness appear

when the DVD is connected to

another TV?

Make sure the TV is on the correct input. Turn TV off,

then on to determine input. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Multiple discs displaying the problem could indicate the DVD lens

needs to be cleaned. Recommend the customer use a lens cleaner on

the DVD. A lens cleaner is available at any local electronics retailer.

Blurriness appearing when watching a TV program indicates an

issue with the display. If the TV program is fine, then connect

the DVD to another input on the display to determine if the problem

is following the DVD.

Connect the DVD to another TV and play a disc. No blurriness

during disc play back indicates a problem with the first TV.

Please refer to the owners manual for instructions on how to connect

the DVD to a TV. If the DVD has a problem on the second TV,

then see service chart for service information.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables.

A bad cable can also cause video problems. Test the cable with another

device to the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-6

DIGITAL DISPLAY & MEDIA TRAINING MASTER

2. NO PICTURE 2-1. Black Screen

The entire screen is black.

Does the DVD on-screen

menu appear?

YES

What cables is the customer

using to connect the DVD?

YES

Is the TV set to

the correct input?

YES

Is the customer able to

watch TV programming?

Make sure the customer did not select 480i resolution in the menu of the DVD HTS if using HDMI connections. Change resolution on

upconversion DVD HTS by pushing the resolution button of the remote

controller. HDMI don’t support 480i resolution.

Determine what cables the customer is using to connect the DVD to

the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting a

DVD to VCR. Copy protection can distort

the picture on older VCR models.

Make sure the TV is on the correct input. Turn TV off,

then on to determine input. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

If the customer is not able to watch television then he may have a

problem with his television, especially if the cable signal comes

through on a different input. If the customer can not get a TV program,

then he still may have a problem with the particular input on his TV.

YES

Can the customer connect

the DVD to another TV?

YES

Has the customer tried

another set of cables?

Have the customer connect the DVD to another TV in order to

determine if the problem is the DVD or the TV. Refer to the OM for

connections assistance. If the DVD works on the second TV,

then the customer has a problem with his TV.

Have the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device to the TV

to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-7

DIGITAL DISPLAY & MEDIA TRAINING MASTER

2-2. Blue Screen

The entire screen is a solid blue color.

Does the DVD on-screen

menu appear?

YES

What cables is the customer

using to connect the DVD?

YES

Is the TV set to

the correct input?

YES

Is the customer able to

watch TV programming?

Make sure the customer did not select 480i resolution in the menu of the DVD HTS if using HDMI connections. Change resolution on

upconversion DVD HTS by pushing the resolution button of the remote

controller. HDMI don’t support 480i resolution.

Determine what cables the customer is using to connect the DVD

to the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting a

DVD to VCR. Copy protection can distort

the picture on older VCR models.

Make sure the TV is on the correct input.

Turn TV off, then on to determine input. Video when using composite,

or component. DVI when using DVI, and HDMI when using HDMI.

If the customer is not able to watch television then he may have a

problem with his television, especially if the cable signal comes

through on a different input. If the customer can not get a TV program,

then he still may have a problem with the particular input on his TV.

YES

Can the customer connect

the DVD to another TV?

YES

Has the customer tried

another set of cables?

Have the customer connect the DVD to another TV in order to

determine if the problem is the DVD or the TV. Refer to the OM for

connections assistance. If the DVD works on the second TV,

then the customer has a problem with his TV.

Have the customer try another set of cables. A bad cable can also

cause video problems. Test the cable with another device to the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-8

DIGITAL DISPLAY & MEDIA TRAINING MASTER

2-3. Snowy Screen

A snowy picture is when black and white dots are all over the screen.

Does the DVD on-screen

menu appear?

YES

What cables is the customer

using to connect the DVD?

YES

Is the TV set to

the correct input?

YES

Is the customer able to

watch TV programming?

Make sure the customer did not select 480i resolution in the menu of the DVD HTS if using HDMI connections. Change resolution on

upconversion DVD HTS by pushing the resolution button of the remote

controller. HDMI don’t support 480i resolution.

Determine what cables the customer is using to connect the DVD

to the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting a

DVD to VCR. Copy protection can distort

the picture on older VCR models.

Make sure the TV is on the correct input. Turn TV off,

then on to determine input. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

If the customer is not able to watch television then he may have a problem with his television, especially if the cable signal comes through on a different input. If the customer can not get a TV program,

then he still may have a problem with the particular input on his TV.

YES

Can the customer connect

the DVD to another TV?

YES

Has the customer tried

another set of cables?

Have the customer connect the DVD to another TV in order to

determine if the problem is the DVD or the TV. Refer to the OM for

connections assistance. If the DVD works on the second TV,

then the customer has a problem with his TV.

Have the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-9

DIGITAL DISPLAY & MEDIA TRAINING MASTER

2-4. No Signal

A “no signal” message appears on the screen of the display.

Does the DVD on-screen

menu appear?

YES

What cables is the customer

using to connect the DVD?

YES

Is the TV set to the

correct input?

YES

Is the customer able to

watch TV programming?

Make sure the customer did not select 480i resolution in the

menu of the DVD HTS if using HDMI connections. Change resolution on

upconversion DVD HTS by pushing the resolution button of the remote

controller. HDMI don’t support 480i resolution.

Determine what cables the customer is using to connect the DVD

to the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting

a DVD to VCR or DVD to DVD Recorder.

Copy protection can distort the picture on older VCR models.

Make sure the TV is on the correct input. Turn TV off,

then on to determine input. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

If the customer is not able to watch television then he may have a

problem with his television, especially if the cable signal comes

through on a different input. If the customer can not get a TV program,

then he still may have a problem with the particular input on his TV.

YES

Can the customer connect

the DVD to another TV?

YES

Has the customer tried

another set of cables?

Have the customer connect the DVD to another TV in order to

determine if the problem is the DVD or the TV. Refer to the OM for

connections assistance. If the DVD works on the second TV,

then the customer has a problem with his TV.

Have the customer try another set of cables. A bad cable

can also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-10

DIGITAL DISPLAY & MEDIA TRAINING MASTER

2-5. Invalid Format or Format Not Supported

Is the customer using a

digital cable connection?

YES

Is the customer using an

analog cable connection?

YES

Is the display

HDCP compliant?

YES

Has the customer tried the

device on another display?

Customer’s using an DVI, or HDMI cable connection need to set the

resolution on the product above 480I. HDMI,

DVI connections can not process a 480I resolution.

They can only process a 480P, 720P, 1080I, or 1080P resolution.

Make sure the customer’s simultaneously connecting analog component cable with HDMI cable. And then If Copy Protected Disc is playing back,

analog component output is no picture. Only when the analog output is

480I, you can see the picture. In case of No Copy Protected Disc,

you can see the picture regardless of the resolution.

Make sure the display is HDCP compliant when using a DVI or

HDMI connection. A lack of HDCP compliancy on the display may

cause an invalid format or format not supported message to appear.

It can also cause a copy protection OSD to appear.

Ask the customer to connect the device to another display.

If the device starts working, then the problem may be the original display.

The customer will need to troubleshoot the display. If the device

still does not work, then the problem may be the device or the cable.

YES

Has the customer tried

another cable?

Ask the customer to replace the cable between the device and display.

If the problem is corrected, then the problem was with the cable.

If the problem continues, then the device is the problem.

Set up service according to in warranty or out of warranty procedures.

2-11

DIGITAL DISPLAY & MEDIA TRAINING MASTER

3. PICTURE COLOR 3-1. No Color

The video displays no color and only shows in black and white.

What cables is the customer

using to connect the DVD?

YES

Is the TV set to the

correct input?

YES

Does color appear when watching multiple discs?

YES

Does color appear when watching a TV program?

Determine what cables the customer is using to connect the DVD

to the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting a

DVD to VCR. Copy protection can distort the picture on older VCR models.

Make sure the TV is on the correct input according to the

connections in use. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Make sure the discs the customer is using are compatible with the

DVD by checking “playable discs” in the owners manual.

Multiple discs displaying the problem indicates a problem with

the DVD HTS.

If the cable or satellite programming is connected through

another input and the customer does not get color, the customer has a

problem with his television. If a TV program does have the color,

the problem may be the DVD HTS, the cables being used,

or the TV itself.

YES

Does color appear

when the DVD is

connected to another TV?

YES

Has the customer tried

another set of cables?

Connect the DVD to another TV and play a disc. Good color during

disc play back indicates a problem with the first TV. Please refer to the

owners manual for instructions on how to connect the DVD to a TV.

If the DVD has a problem on the second TV, then see service chart for

service information.

Have the customer try another set of cables. A bad cable can

also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If the DVD is the problem,

please see service chart for service information.

2-12

DIGITAL DISPLAY & MEDIA TRAINING MASTER

3-2. Poor Color

The color is poor. Examples would be washed out colors, colors bleeding into one another, or a solid tint to

a screen.

What cables is the customer

using to connect the DVD?

YES

Is the TV set to the

correct input?

YES

Is color fine when watching

multiple discs?

YES

Is color fine when watching

a TV program?

Determine what cables the customer is using to connect the DVD to

the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer is not connecting a

DVD to VCR. Copy protection can distort the picture on older VCR models.

Make sure the TV is on the correct input according to the

connections in use. Video when using composite, or component.

DVI when using DVI, and HDMI when using HDMI.

One disc displaying the issue is a problem with the disc.

Make sure the discs the customer is using are compatible with the DVD

by checking “playable discs” in the owners manual. Multiple discs

displaying the problem indicates a problem with the DVD HTS.

If the cable or satellite programming is connected through another

input and the customer does not get color, the customer has a problem

with his television. If a TV program does have the color, the problem

may be the DVD HTS, the cables being used, or the TV itself.

YES

Is color fine when the DVD is

connected to another TV?

YES

Has the customer tried

another set of cables?

Connect the DVD to another TV and play a disc. Good color during

disc play back indicates a problem with the first TV. Please refer to the

owners manual for instructions on how to connect the DVD to a TV.

If the DVD has a problem on the second TV, then see service

chart for service information.

Have the customer try another set of cables. A bad cable

can also cause video problems. Test the cable with another device to

the TV to also determine if the TV is bad. If the DVD is the problem,

please see service chart for service information.

2-13

DIGITAL DISPLAY & MEDIA TRAINING MASTER

4. NOISE/AUDIO PROBLEMS 4-1. No Audio

The customer is not able to get audio.

What cables is the customer

using to connect the DVD?

YES

Determine what cables the customer is using to connect the DVD

to the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer has audio cables

connected if using an HDMI to DVI adapter or video-only cables

(DVI, component, etc).

Is the customer

able to see video?

YES

Does issue occur on more than one disc?

YES

Problem occur when

watching TV program?

YES

Does the problem occur

when DVD is connected to

another TV?

Make sure the customer has not routed video

and audio to separate inputs.

Problem occurring on one disc indicates a problem with the disc.

Problem occurring on multiple discs could indicate a lens cleaner

is needed. The customer can purchase a lens cleaner at any

electronics retailer.

No audio from a TV program on a different channel or input means

there is a problem with the television.

If a TV program does have the audio, the problem may be the DVD HTS,

the cables being used, or the TV itself.

Audio is fine when the DVD is connected to another TV

indicates the problem is with the television.

Refer to the owners manual for assistance

with connecting DVD to another TV.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables. A bad cable can also

cause audio problems. Test the cable with another device to the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-14

DIGITAL DISPLAY & MEDIA TRAINING MASTER

4-2. Distorted Audio

The audio sounds muffled, scratchy, or the audio skips.

Determine what cables the customer is using to connect the DVD

What cables is the customer

using to connect the DVD?

YES

to the TV and if connected properly. Refer to OM for connections.

Tighten any loose cables. Make sure the customer has audio

cables connected if using an HDMI to DVI adapter or video-only cables

(DVI, component, etc).

Is the customer

able to see video?

YES

Does issue occur on more than one disc?

YES

Problem occur when

watching TV program?

YES

Does the problem occur

when DVD is connected to

another TV?

Make sure the customer has not routed

video and audio to separate inputs.

Problem occurring on one disc indicates a problem with the disc. Problem occurring on multiple discs could indicate a lens cleaner

is needed. The customer can purchase a lens cleaner at any

electronics retailer.

Distorted audio from a TV program on a different channel or

input means there is a problem with the television. If a TV program

does have the audio, the problem may be the DVD HTS,

the cables being used, or the TV itself.

Audio is fine when the DVD is connected to another TV

indicates the problem is with the television.

Refer to the owners manual for assistance

with connecting DVD to another TV.

YES

Has the customer tried

another set of cables?

Have the customer try another set of cables. A bad cable can

also cause audio problems. Test the cable with another device to

the TV to also determine if the TV is bad. If DVD is problem,

please see service chart for service information.

2-15

DIGITAL DISPLAY & MEDIA TRAINING MASTER

4-3. Humming/Clicking Noise

The unit is making a humming noise or a clicking noise.

DVDs make a slight hum when playing discs. Does the noise only happen when a disc

is playing?

YES

A clicking noise or a noise interfering with audio may indicate a problem.

Try multiple discs. Multiple discs with the same issue means the

DVD may need service or be professionally cleaned.

Check DVD service for service instructions.

Check to see if a disc is inserted into the DVD and eject the disc.

A humming or clicking noise when the disc is not inserted

may be a cooling fan. Check OM to see if cooling fan is present.

If not, unit will need service. See DVD service for service instructions.

Does the noise happen

when the DVD is turned on?

4-4. Audio/Video Out of Synch

The audio and video do not match up. People look to be talking, but their voices are delayed by a few seconds.

If the issue only shows up on one disc, then the problem is

with that disc. Have the customer try multiple tapes or discs.

If the issue happens on multiple discs and tapes,

then ask the customer to try a lens or a head cleaner.

Make sure cables are routed properly.

Make sure audio and video cables are routed to the same source

(if possible). Routed audio and video to separate products

can cause a bit of a delay between the devices as not all devices

will process audio and video signals at the same speed.

Has the customer tried

multiple tapes and discs?

YES

How are the cables routed?

YES

Has the customer

connected to another TV?

Ask the customer to connect the product to another TV.

If the issue persists, try another set of cables. If the issue still persists,

then the issue is with the unit. The unit will need service.

Arrange service following proper procedure.

2-16

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5. MISCELLANEOUS 5-1. No Power

The unit will not turn on.

Is the unit plugged in?

YES

Does the unit turn on when the power button is pressed on the unit?

YES

Is the unit plugged into

a surge protector?

YES

Does the unit work when

plugged into another outlet?

YES

Make sure the unit is plugged into a surge protector or the wall.

See if the unit will turn on when the power button the unit is pressed.

If the unit turns on, then troubleshoot the remote control using

the Remote Control Not Working call flow.

Make sure the surge protector is plugged into a wall outlet.

Also make sure the surge protector is turned on or does not

need to be reset due to a recent surge.

Test the unit in another outlet. If the unit works,

then the problem is the outlet where the unit was connected.

If the issue is the DVD, then set up service for DVD according to

DVD service guide.

Have there been any lightning

strikes or power outages?

If DVD failed due to lightning strike or a power surge,

this is not covered by warranty. Follow guidelines

for service for a DVD out of warranty.

2-17

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-2. Disc Error

The unit displays “disc error” when a disc is inserted into the DVD HTS.

Is the disc inserted into

the DVD HTS properly?

YES

What type of disc is

the customer using?

YES

Did the customer burn

this disc in a DVD recorder?

YES

Did the customer burn

the disc in a computer?

Make sure the disc has been inserted into the DVD HTS properly.

The HTS can not read a disc inserted into the unit upside down.

Determine the type of disc the customer is not able to play.

If the customer is using a store-bought movie DVD,

then please skip the next three questions.

If it’s a recorded disc, move onto the next question.

Make sure the customer finalized the disc in the DVD recorder.

Make sure the type of disc the customer is using is compatible

with the DVD HTS. If the customer initialized a DVD-RW in VR mode,

make sure the owners manual has the RW logo to show

compatibility for the VR format.

Make sure the customer burned a compatible format

(such as VCD, SVCD, or DivX). Make sure the file meets the

specifications required for the HTS to play the disc. Check the owners

manual for specifications. Disc may still not be compatible.

Refer customer to section of OM regarding burned discs.

YES

Has the customer tried

multiple discs?

One disc with the problem is a problem with the disc.

DVD HTSs can play scratched or dirty DVDs and not have any issues

during playback. Multiple discs with the issue can mean the lens

on the DVD HTS needs to be cleaned.

Recommend a lens cleaner. Service DVD if lens cleaner was used.

2-18

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-3. Unit Locks Up

Unit does not respond to any commands.

Does the unit respond to

the buttons on the unit?

YES

Has the customer

reset the unit?

5-4. Disc Stuck

A DVD disc is stuck in the unit.

Does the open/close button

on the unit work?

YES

If the unit will turn on or off with the button on the unit,

troubleshoot the remote control. Please refer to

Remote Control Not Working call flow.

If the unit does no respond to any buttons,

then reset the unit by unplugging it for 15 to 30 seconds.

If the unit does not respond after the reset,

arrange for service on the DVD.

Press the open/close button on the unit. If the disc ejects,

troubleshoot the remote using the Remote Control

not working call flow.

Has the customer

reset the unit?

Ask the customer to reset the unit by unplugging the unit from the electrical outlet for 15 to 30 seconds. If the disc

remains stuck in the unit after the reset, the unit will need service.

2-19

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-5. Remote Control Not Working

Does the unit respond to

buttons on the front of the unit?

YES

Does the remote control

any component?

YES

Have the batteries

been changed?

YES

Is the remote working at all?

If the buttons on the front of the unit do not respond,

determine if the product has locked up or if the unit will not turn on.

The problem is not the remote control. Make sure the remote control is

the remote that goes with that particular model.

Determine which product the remote is not working.

The customer may need to press the appropriate mode button

to make the remote operate another component. The remote may

even need to be programmed to the other component,

especially if the batteries were just changed.

Ask the customer to change batteries.

Make sure the batteries are new and fresh.

The batteries do not need to come from a “spare” battery drawer.

Do not mix used and new batteries.

If the remote does not work anything, then walk the customer

through a remote drain. Remove the batteries from the remote control.

Then press and hold any button down for a minute.

This will drain the power out of the remote and reset it.

Universal remotes will have to be reprogrammed.

YES

Does any remote

work the unit?

YES

Does the customer want to

program their remote?

If another remote works the unit, then follow

the procedure to FOC the customer a new remote.

If two remotes do not work the unit, the unit will need service.

Please refer to the OM for instructions on how to

program remote to TV. Customer wants to program a remote

other than Zenith or LG, the customer will need to contact

the manufacturer of the remote control. Codes do not work,

remote is not compatible.

2-20

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-6. Will Not Play Disc

The unit will not play a disc when a disc is inserted into the HTS.

Is the disc inserted into

the DVD HTS properly?

YES

What type of disc is

the customer using?

YES

Did the customer burn this

disc in a DVD recorder?

YES

Did the customer burn

the disc in a computer?

Make sure the disc has been inserted into the DVD HTS properly.

The HTS can not read a disc inserted into the unit upside down.

Determine the type of disc the customer is not able to play.

If the customer is using a store-bought DVD,

then please skip the next three questions.

If it’s a recorded disc, move onto the next question.

Make sure the customer finalized the disc in the DVD recorder.

Make sure the type of disc the customer is using is compatible

with the DVD HTS. If the customer initialized a DVD-RW in VR mode,

make sure the owners manual has the RW logo to show

compatibility for the VR format.

Make sure the customer burned a compatible format

(such as VCD, SVCD, or DivX). Make sure the file meets the

specifications required for the HTS to play the disc.

Check the owners manual for specifications. Disc may still not be

compatible. Refer customer to section of OM regarding burned discs.

YES

Has the customer tried

multiple discs?

One disc with the problem is a problem with the disc.

DVD HTSs can play scratched or dirty DVDs and not have

any issues during playback. Multiple discs with the issue can mean

the lens on the DVD HTS needs to be cleaned.

Recommend a lens cleaner. Service DVD if lens cleaner was used.

2-21

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-7. Disc Freezes or Skips

The audio and video freeze and skip during play back of a DVD disc.

Is the disc inserted into

the DVD HTS properly?

YES

What type of disc is

the customer using?

YES

Did the customer burn this

disc in a DVD recorder?

YES

Did the customer burn

the disc in a computer?

Make sure the disc has been inserted into the DVD HTS properly.

The HTS can not read a disc inserted into the unit upside down.

Determine the type of disc the customer is not able to play.

If the customer is using a store-bought DVD,

then please skip the next three questions. If it’s a recorded disc,

move onto the next question.

Make sure the customer finalized the disc in the DVD recorder.

Make sure the type of disc the customer is using is compatible

with the DVD HTS. If the customer initialized a DVD-RW in VR mode,

make sure the owners manual has the RW logo to show

compatibility for the VR format.

Make sure the customer burned a compatible format

(such as VCD, SVCD, or DivX). Make sure the file meets the

specifications required for the HTS to play the disc.

Check the owners manual for specifications. Disc may still not be

compatible. Refer customer to section of OM regarding burned discs.

YES

Has the customer tried

multiple discs?

One disc with the problem is a problem with the disc.

DVD HTSs can play scratched or dirty DVDs and not have

any issues during playback. Multiple discs with the issue can mean

the lens on the DVD HTS needs to be cleaned.

Recommend a lens cleaner. Service DVD if lens cleaner was used.

2-22

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-8. Can Access Menu, but Not Play a Movie

The disc menu is displayed but the disc will not play.

Go into the system information screen of the DVD HTS.

Check the system information

screen of the DVD HTS.

YES

To access this menu, bring up the main menu. Go to TV aspect,

highlight 16:9, press 1397139 and hit enter. If sold in the US,

this should be DVD region code 1 and DVD region code A.

In case of HD-DVD, there is no region code.

What is the region code of

the DVD disc?

If the region code of the DVD disc is not A, then the DVD disc

will not play on a HTS sold in the US. The HTS can play only

DVD discs labeled same as the rear of the unit.

YES

The disc locking up on a feature needs to be reported to Q&E.

Is the disc locking up on a

disclaimer screen when the

customer presses play?

See instructions on reporting problems to Q&E. For a work

around the problem, advise the customer to access the chapter list.

Start play back from chapter 1 to start the movie and avoid any

5-9. Reporting a problem to Quality & Engineering

Reporting a problem that may require a firmware update to fix.

Get the micom version from the system information screen.

How do I report a problem to

Quality and Engineering?

Get the ISBN number from the back of the DVD box cover

(the number under the barcode). Get the exact problem

the customer is describing Email this information to Matt Wedgman

so the issue can be reported to the factory.

feature lock ups.

2-23

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-10. Aspect Ratio

The customer has bars on the top and bottom of the screen, the left and right of the screen, or both.

Is the movie wide screen

or full screen?

YES

What is the aspect ratio

of the DVD disc being played?

YES

What is the resolution

of the DVD HTS set at?

YES

What is the aspect ratio

of the television set at?

A full screen movie played on a wide screen TV will have bars

on the left and right side of the TV. The customer needs to

make sure they choose the appropriate type of movie

they want to view.

If the aspect ratio is 1.33:1 then the movie is set up for full screen viewing.

Bars will appear on the left and right side of the screen if the TV is wide

screen. If the aspect ratio is 1.85:1 or 2.35:1, then there will be bars on

the top and bottom as that ratio is bigger than widescreen TVs (1.78:1).

Try changing the resolution to 480p. 720p, 1080i and

1080p resolution require a widescreen aspect ratio which

means bars will be placed on the left and right side for

full screen movies.

Make sure the aspect of the television is set appropriately.

If the aspect ratio of the television is set at 4:3 when the TV

is wide screen, then a wide screen movie will show up as

letterbox with bars on the top and bottom and bars on the sides.

2-24

DIGITAL DISPLAY & MEDIA TRAINING MASTER

5-11. My Unit Won’t Upconvert

The customer has a problem with getting the unit to change resolutions to 480p, 720p, 1080i, or 1080p.

Is the disc

currently playing?

YES

Is the customer using

component (red, blue,

and green) cables?

YES

Is the customer using

any sort of adapter cable?

YES

Is the customer using

an HDMI or DVI cable?

Ask the customer to press stop to stop the disc from playing.

Ask the customer to press the resolution button to change the resolution.

The DVD HTS will not change resolutions while the disc is playing.

Discs with copy protection will not upconvert above 480p

when using component cables. The component output does not have

HDCP (highbandwidth digital content protection) compliancy

which causes the DVD HTS to switch from 720p or 1080i to 480p.

RGB to DVI or RGB to HDMI adapters will not upconvert.

RGB outputs and inputs are not HDCP compliant. If the customer

sees an error message about HDCP, this is the issue.

Copy protected discs will not upconvert

when HDCP is not found on the input or output.

Regular discs can convert to 1080p over the HDMI output and

only the HDMI output. The TV has to have HDCP compliancy on

the HDMI input. The display has to accept the resolution

(480p, 720p, 1080i, or 1080p).

YES

Is the customer using an

HDMI to DVI cable?

YES

Has the customer tried

multiple discs?

Some movie companies will not allow their discs to upconvert

past 480p. If only one disc poses a problem, then the issue is the disc.

The customer will need to try multiple discs.

One disc not upconverting means the disc may not upconvert. Some movie companies will not allow their discs to upconvert.

If multiple discs display the issue, remove the disc and change

the resolution with no disc in the unit.

If resolution will not change, the unit needs service.

2-25

ONE POINT REPAIR GUIDE

BD901

F901

1. NO POWER PROBLEM

No power problem occurs when you power on the unit.

1-1. Fuse & Bridge diode 1-1-1. Solution

Replace F901, BD901 on SMPS board.

1-1-2. How to troubleshoot (Countermeasure)

1) Look at the physical of fuse F901.

2) Check the bridge diode BD901.

F901

BD901

1-1-3. Service hint (Any picture / Remark)

< Fuse, F901 >

Can look at physical condition.

2-26

BD901

F901

< SMPS board top view >

ONE POINT REPAIR GUIDE

Case 1

Case 2

Case 3

Case 4

No power problem occurs when you power on the unit.

1-2. VFD, 14 VA, 5.5 VA 1-2-1. Solution

Replace D922, D923, D924, D925, D926, D927, IC901.

1-2-2. How to troubleshoot (Countermeasure)

Case 1) FLD abnormal: Check D950, D951, ZD951, ZD952, FR950 and replace it. Case 2) 5.5 VA abnormal: Check D952, D953 and replace it. Case 3) 14 VA abnormal: Check D955, D956 and replace it. Case 4) All voltage abnormal: Check IC901 and replace it.

Case 1

Case 4

1-2-3. Service hint (Any picture / Remark)

Case 2

Case 3

Case 1

Case 2

Case 4

< SMPS board top view > < SMPS board bottom view >

2-27

Case 3

ONE POINT REPAIR GUIDE

IC108

IC103

2. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE ON FRONT PANEL

When you turn on your set, it will blank / no message on front panel, and stand-by led no working.

2-1. IC103 (No 3.3 VA) 2-1-1. Solution

Replace IC103 on MAIN board.

2-1-2. How to troubleshoot (Countermeasure)

1) Please check 3.3 VA of IC108.

2) If 3.3 VA is abnormal, please check 5.5 VA of IC103 pin1.

3) If 5.5 VA is OK, but 3.3 VA is abnormal, replace IC103.

2-1-3. Service hint (Any picture / Remark)

IC108

< MAIN board top view >

IC103

< MAIN board bottom view >

2-28

ONE POINT REPAIR GUIDE

IC105

When you turn on your set, it will blank / no message or Welcome on front panel, and it will not boot-up.

2-2. IC105 System 3.3 V (No System 3.3 V) 2-2-1. Solution

Replace IC105 on MAIN board.

2-2-2. How to troubleshoot (Countermeasure)

1) Please check 5.5 VA of IC105 pin3 (VIN).

2) If 5.5 VA is abnormal, please check SMPS 5.5 VA.

3) If 5.5 VA is OK, but 3.3 V is abnormal at the IC105 pin6 (VOUT), replace IC105.

2-2-3. Service hint (Any picture / Remark)

IC105

< MAIN board top view >

2-29

ONE POINT REPAIR GUIDE

X500

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally.

2-3. X500 2-3-1. Solution

Replace X500 on MAIN board.

2-3-2. How to troubleshoot (Countermeasure)

1) Please check the soldering status of 27 MHz crystal (X500).

2) Please check the frequency of 27 MHz crystal (X500).

3) If the crystal doesn’t oscillate, replace X500.

4) After changing it, if the set is still not booting :

- Check Serial Flash IC (IC504) refer to item 2-4.

- Check SDRAM IC (IC503) refer to item 2-5.

- Check MT1389 IC (IC500) refer to item 2-6.

2-3-3. Service hint (Any picture / Remark)

X500

< MAIN board top view >

2-30

ONE POINT REPAIR GUIDE

IC504

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally.

2-4. IC504 (SERIAL FLASH MEMORY) 2-4-1. Solution

Replace IC504 on MAIN board.

2-4-2. How to troubleshoot (Countermeasure)

1) Please check physical status of IC504 on your eyes.

2) Check the VCC (3.3 V) of IC504 and if it’s normal, please replace IC504.

(Please make sure IC504 has proper program.)

3) After changing it, if the set is still not booting :

- Check SDRAM IC (IC503) refer to item 2-5.

- Check MT1389 IC (IC500) refer to item 2-6.

2-4-3. Service hint (Any picture / Remark)

< MAIN board bottom view >

2-31

IC504

ONE POINT REPAIR GUIDE

IC503

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally.

2-5. IC503 (SDRAM MEMORY) 2-5-1. Solution

Replace IC503 on MAIN board.

2-5-2. How to troubleshoot (Countermeasure)

1) Please check 3.3 V IC503.

2) If it doesn’t work even though IC105 is no problem, IC503 (DDR memory) could have problem.

3) After changing it, if the set is still not booting :

- Check MT1389 IC (IC500) refer to item 2-6.

2-5-3. Service hint (Any picture / Remark)

IC503

< MAIN board bottom view >

2-32

ONE POINT REPAIR GUIDE

C510 (1.2 V)

C548 (3.3 V)

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally.

2-6. IC500 (MPEG IC) 2-6-1. Solution

Replace IC500 on MAIN board.

2-6-2. How to troubleshoot (Countermeasure)

1) Please Check 1.2 V of C510 on main board.

Please Check 3.3 V of C548 on main board.

2) If it doesn’t work even though IC105 is no problem, IC500 (MT1389) could have problem.

2-6-3. Service hint (Any picture / Remark)

C510 (1.2 V)

< MAIN board top view >

C548 (3.3 V)

2-33

ONE POINT REPAIR GUIDE

HDMI OUT

3. BAD HDMI VIDEO / AUDIO OUTPUT

When unit is connected to HDMI TV using HDMI cable, picture shows bad color, no output or mixed

color on the screen. But component output is OK.

3-1. JK501 (HDMI JACK) 3-1-1. Solution

Replace JK501 (HDMI Jack).

3-1-2. How to troubleshoot (Countermeasure)

1) Check JK501 pin soldering.

2) If there is short soldering on pin JK501, re-soldering pin JK501.

3) If problem still occurs, check HDMI data.

- If all data OK, replace JK501.

- If data NG, check set on BD mode :

Replace IC500.

3-1-3. Service hint (Any picture / Remark)

HDMI OUT

< MAIN board top view >

2-34

ONE POINT REPAIR GUIDE

IC601 (PWM IC)

AMP IC

4. NO AUDIO FROM SPEAKER

When unit is connected to speaker, no audio from speaker.

4-1. IC601 (PWM IC) 4-1-1. Solution

Replace IC601 (PWM IC).

4-1-2. How to troubleshoot (Countermeasure)

1) Check IC601 pin soldering.

2) If there is short soldering on pin IC601, re-soldering pin IC601.

3) If problem still occurs, check AMP IC (IC700, IC701, IC702).

- Check IC700, IC701, IC702 pin soldering.

- If soldering OK, check the AMP heat sink :

Replace IC700, IC701, IC702.

4-1-3. Service hint (Any picture / Remark)

AMP IC

IC601 (PWM IC)

< MAIN board top view >

< AMP heat sink view >

2-35

ONE POINT REPAIR GUIDE

CN2A3

CN103

5. NO USB

When unit is connected to USB, no audio and video from SET.

5-1. IC500 (MT1389) 5-1-1. Solution

Change IC500 (MT1389).

5-1-2. How to troubleshoot (Countermeasure)

1) MAIN board : Check CN103 connector and FFC cable.

JACK board : Check CN2A3 connector.

2) If there is short soldering on CN103, re-soldering CN103.

If there is short soldering on CN2A3, re-soldering CN2A3.

3) If problem still occurs, check 5V (CN103 pin8, 9).

- If no output, check MAIN board IC102.

- If OK, check D+, D- signal.

- If there is no signal, replace IC500.

5-1-3. Service hint (Any picture / Remark)

CN103

< MAIN board top view >

CN2A3

< JACK board top view >

2-36

ONE POINT REPAIR GUIDE

CN201

6. BT CONNECTION ERROR

When you connect Wireless connection(like mobile phone, multi-room SPK, etc) through the BT, the “BT ERROR“ message appears.

6-1. BT module 6-1-1. Solution

Replace BT module on Main chassis.

6-1-2. How to troubleshoot (Countermeasure)

1) Check your BT device. Make sure that BT function is on-state.

2) If it is OK, please check the CN201.

3) If there is soldering problem, please re-soldering pin CN201.

4) If after re-soldering problem still occurs, replace BT module.

5) If problem still occurs after change BT module, check MT1389 IC (IC500). Refer to item 2-6.

6-1-3. Service hint (Any picture / Remark)

CN201

< MAIN board top view >

2-37

ELECTRICAL TROUBLESHOOTING GUIDE

1. SYSTEM POWER SUPPLY ON SMPS BOARD

No 5.5 VA

YES

Is F901 normal?

YES

Is TH901 normal?

YES

Is BD901 normal?

YES

Is the VCC

(11 V ~ 25 V) supplied to IC901

pin7?

YES

Is D952, D953 normal?

YES

Replace F901 (same fuse).

Replace TH901.

Replace BD901.

Check or replace.

Replace D952, D953.

Power line of MAIN board is short.

2-38

ELECTRICAL TROUBLESHOOTING GUIDE

No 14 VA

YES

Is F901 normal?

YES

Is TH901 normal?

YES

Is BD901 normal?

YES

Is the VCC

(11 V ~ 25 V) supplied to IC901

pin7?

YES

Is D955, D956 normal?

YES

Replace F901 (same fuse).

Replace TH901.

Replace BD901.

Check or replace.

Replace D955, D956.

Power line of MAIN board is short.

2-39

ELECTRICAL TROUBLESHOOTING GUIDE

No PVDD (36 VA / 26 VA)

YES

Is the P-CTRL normal?

YES

Is the VCC

(11 V ~ 25 V) supplied to IC902

pin4?

YES

Is IC902 normal?

YES

Is Q951 normal?

YES

Check MICOM IC on MAIN board.

Is Q902 normal?

Check or replace Q902.

Replace IC902.

Replace Q901.

Is D981 normal?

YES

Power line of MAIN board is short.

2-40

Replace D981.

ELECTRICAL TROUBLESHOOTING GUIDE

2. POWER SUPPLY ON MAIN BOARD

No 3.3 V

YES

Is the VCC supplied

to IC105 pin3?

YES

Is there signal

at IC105 pin2?

YES

Check IC105 and replace.

No 3.3 VA

YES

Check 5.5 VA on SMPS board.

Check IC108 pin23 (P_CTRL).

Is the VCC supplied

to IC103 pin1?

YES

Check IC103 and replace.

2-41

Check 5.5 VA on SMPS board.

ELECTRICAL TROUBLESHOOTING GUIDE

No 12 V

YES

Is the VCC supplied

to IC104 pin2?

YES

Is there signal

at IC104 pin1?

YES

Check IC104 and replace.

No 5 V

YES

Check 14 VA on SMPS board.

Check IC108 pin23 (P_CTRL).

Is the VCC supplied

to IC102 pin3?

YES

Is there signal

at IC102 pin2?

YES

Check IC102 and replace.

2-42

Check 5.5 VA on SMPS board.

Check IC108 pin23 (P_CTRL).

ELECTRICAL TROUBLESHOOTING GUIDE

3. SYSTEM PART

Power on

YES

Stand-by LED

OK?

YES

5.5 VA, 3.3 VA OK?

YES

IC108: 3.3 VA,

IC102: 1.5 V, IC105 : 3.3 V

OK?

YES

X500

27.000 MHz OK?

YES

Replace IC500 MT1389.

Check IC103

and 5.5 VA on SMPS board.

Check IC108 / IC102 / IC105

and SMPS board.

Replace X500.

Main Board

2-43

Check CN305 pin11.3.3 VA OK?

Front Board

ELECTRICAL TROUBLESHOOTING GUIDE

“LG Logo”

display on monitor

OK?

YES

IC108: 3.3 VA,

IC102: 5 V, IC105 : 3.3 V

OK?

YES

X500

27.000 MHz OK?

YES

Signal OK?

YES

Replace IC500 MT1389

or IC102, IC105.

Check IC108 / IC102 / IC105

and SMPS board.

Replace X500.

Replace IC503

(SDRAM).

“LG Logo”

display on monitor

OK?

YES

System part OK.

YES

Display

cable connection

OK?

2-44

Proper display cable connect.

ELECTRICAL TROUBLESHOOTING GUIDE

4. NO HDMI OUTPUT

No HDMI audio / video output

YES

JK501 VCC50 OK?

YES

IC108

HDMI_SCL/SDA, EDID_SW, CEC_RX/TX

HDMI_RST OK?

YES

JK501 pin19 HPD

about 3.3 V OK?

YES

Is there signal on

pin1, 3, 4, 6, 7, 9, 10, 12?

YES

HDMI output OK.

Check VCC50 IC102.

Check IC108.

Check hot plug detect signal from TV.

Check IC500 MT1389 VCC

or replace IC500 MT1389.

2-45

ELECTRICAL TROUBLESHOOTING GUIDE

5. NO AUDIO OUTPUT

No AUDIO output

YES

IC601

PWM_3V3 OK?

YES

X601

24.576 MHz OK?

YES

IC601 pin19, 20, 21, 22, 23

I2C data OK?

YES

IC700, IC701, IC702

36 V, 12 V OK?

YES

IC700, IC701, IC702

pin4, 16, 18 OK?

YES

Check IC105 pin3 supply 5.5 VA and pin2.

Replace X601.

Check IC500 pin157, 161, 162, 160, 158.

Check SMPS 36 V and IC104 12 V.

Check IC100.

Replace IC700, IC701, IC702.

2-46

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

1. SYSTEM PART (MPEG CRYSTAL 27 MHz)

1) MT1389QE/GH main clock is at 27 MHz (X500)

IC500

2) Flash R/W enable signal during download.

SF_DI

SF_DO

2-47

2. SDRAM CLOCK

1) MT1389QE/GH main clock is at 27 MHz (X500)

SDCLK

IC503

3. VIDEO PART (100% FULL COLOR-BAR)

CVBS_OUT

2-48

4. HDMI PART

HDMI_SDA

HDMI_SCL

HDMI_CLK HDMI_DATA

2-49

5. SERVO OPEN/CLOSE SIGNAL

1) Tray open/close waveform

OPENSW

CLOSESW

OPEN

3) Tray open waveform

OPENSW

2) Tray close waveform

OPENSW

CLOSESW

OPEN

CLOSESW

OPEN

2-50

4) Sled control related signal (No disc condition)

SLD

M-STBY

SL+

SL-

IC400

2-51

5) Lens control related signal (No disc condition)

FOD

F+

F-

IC400

Laser power control related signal

6) (No disc condition)

MDI

DVDLD

CDLD

IC500

2-52

7) Disc type judgement waveforms

DVD

F+

PU_DET

F+

PU_DET

IC400

IC500

DVD

25 : This signal can see using special debug program

2-53

F+

IC400

PU_DET

F+

PU_DET

IC500

28 : This signal can see using special debug program

2-54

8) Focus on waveforms

IC500

PU_DET

FOD

F+

F-

PU_DET

FOD

F+

DVD

30 : This signal can see using special debug program

F-

IC400

2-55

9) Spindle control waveforms (No disc condition)

SPIND

SP-

SP+

2-56

10) Tracking control related signal (System checking)

PU_DET

TRO

T-

T+

DVD

PU_DET

TRO

T-

T+

PU_DET

TRO

T-

T+

IC500

37 : This signal can see using special debug program

2-57

2-58

WIRING DIAGRAM

: HARNESS

: FFC

12P FFC

(MAIN – JACK)

CABLE

CN103

23P FFC

CABLE

(MAIN – MD)

CN400

(MAIN -WIRELESS)

12P HARNESS

CABLE

(MAIN – SMPS)

10P FFC

CABLE

(MAIN – MD)

CN401

CN106CN102

26P FFC

CABLE

CN201

12PIN FFC

(MAIN – BT)

MAIN

CABLE

CN101

18PIN FFC

CABLE

(MAIN – FRONT)

8P B’d to B’d

SMPS

CN901

CN2A3

JACK

Wireless

Wireless, BT Option

CN305

FRONT

2-59 2-60

BLOCK DIAGRAM

HDMI Out

Composite

Optical IN

BT_RX

Master

Tuner

Aux in

CVBS Out

SPDIF in

BT_BCK BT_LRCK BT_DATA

ADC_BCK

ADC_LRCK ADC_DATA

Tuner L/R

AUX L/R

Main+AMP Block

24.576 MHz

DIR CS8422 In:Slave

Out:Master

I2S

Buffer(244)

ADC

CS5346

Master

By Micom

MCLK

DIR_MCLK

DIR_BCK DIR_LRCK

DIR_DATA

I2S DIR_SCL/SDA/INT

OE1/2

CEC

TMDS, SCL, SDA, HPD

SPI_DO,DI,CLK,CE

MTK1389GH

(176 PIN)

27 MHz

SFCL,SFDA

SCL,SDA

DMA,DB

Renesas

64P

512/32K

M_BCK

M_LRCK

M_DATA[0~2]

Serial Flash

4MBytes

E2P (HDCP)

16 kbit

SDRAM

128 Mbit

E2P(Option)

16 kbit

24.576 MHz

I2S

A/P_SCL/A/P_SDA/RST

By Micom

VFD DO, CLK, RST, KEY

AMP_PDN, SD, Protect

FR,FL

PWM

Modulator

PS9860

I2C

RR,RL

C,W

I2S

TAS5612

SMSC Module

Wireless

TX Module

W4-2 : Data[1]

Wireless TX

Portable

USB

MIC

I/O

Block

PTB L/R

A/P_SCL/A/P_SDA/RST

By Micom

D+,D-

S4308

MIC L/R

TRD, FOD, SLD, SPD, LOAD,TILT

Motor Driver

AM5890

A,B,C,D,E,F,RF

FRONT

OPU

Block

MC3401

2-61 2-62

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM

No Power

BD901 is Defective

No Power

D902 is Defective

Vkk No Power

D951 is Defective

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL

FLD No Power

D950 is Defective

No Digitron Displayed

ZD951, ZD952 are Defective

COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.

NOTE :

1. Shaded(

2. Voltages are DC-measured with a digital voltmeter

) parts are critical for safety. Replace only

with specified part number.

during Play mode.

5.5 VA No Power

S/W Error

IC901, IC902 are Defective

No AMP Power

Q902, Q951 are Defective

D952, D953 are Defective

Switching Error

IC951, IC981 are Defective

14 VA No Power

D955, D956 are Defective

No Power

F901 is Defective

PVDD No Power

Switching Error

B C D E F G H I J K L M N O P Q R ST

PC900~PC902 are Defective

D981 is Defective

Warning Parts that are shaded are critical with respect to risk of fire or electrical shock.

EAX65239501 Rev1.6(14)

SMPS

2014.12.19

2-63 2-64

2. MAIN & AMP - MPEG CIRCUIT DIAGRAM

WAVEFORM

NUMBER

B C D E F G H I J K L M N O P Q R ST

EAX66214901 Rev1.2(3) MAIN+AMP(#2)

MPEG

2015.01.07

2-65 2-66

3. MAIN & AMP - SERVO CIRCUIT DIAGRAM

WAVEFORM

NUMBER

B C D E F G H I J K L M N O P Q R ST

EAX66214901 Rev1.2(3) MAIN+AMP(#3)

SERVO

2015.01.07

2-67 2-68

4. MAIN & AMP - I/O CIRCUIT DIAGRAM

WAVEFORM

NUMBER

B C D E F G H I J K L M N O P Q R ST

EAX66214901 Rev1.2(3) MAIN+AMP(#4)

I/O

2015.01.07

2-69 2-70

5. MAIN & AMP - MICOM CIRCUIT DIAGRAM

EAX66214901 Rev1.2(3) MAIN+AMP(#5)

B C D E F G H I J K L M N O P Q R ST

MICOM

2015.01.07

2-71 2-72

6. MAIN & AMP - PWM CIRCUIT DIAGRAM

EAX66214901 Rev1.2(3) MAIN+AMP(#6)

B C D E F G H I J K L M N O P Q R ST

PWM

2015.01.07

2-73 2-74

7. MAIN & AMP - AMP CIRCUIT DIAGRAM

EAX66214901 Rev1.2(3) MAIN+AMP(#7)

B C D E F G H I J K L M N O P Q R ST

AMP

2015.01.07

2-75 2-76

8. JACK CIRCUIT DIAGRAM

EAX65085901, Rev1.0(1)

B C D E F G H I J K L M N O P Q R ST

JACK

2012. 12. 27

2-77 2-78

9. FRONT CIRCUIT DIAGRAM

EAX66228301 Rev1.0(0)

B C D E F G H I J K L M N O P Q R ST

FRONT

2014.12.22

2-79 2-80

CIRCUIT VOLTAGE CHART

1. ICs

3. CONNECTORS

Pin No. Pin Description Spec (V) Power-On Mode

IC101 (EEPROM/BR24G16FJ)

8 VCC 3.4 3.409

IC102 (TJ4220GDP)

3 VIN 5.5 5.513

6 VOUT 5 5.091

IC103 (AP7335)

1 INPUT 5.5 5.513

5 OUTPUT 3.4 3.409

IC104 (LM37102D)

2 VIN 13 12.99

3 VOUT 12 11.97

IC105 (TJ4220GDP)

3 VIN 4.7 4.66

6 VOUT 3.4 3.407

IC108 (MICOM/R5F100LL)

15 VDD 3.4 3.409

16 VDD 3.4 3.409

IC200 (ADC/CS5346)

14 VA 5 5.089

46 VDD 3.3 3.335

36 VLS 3.3 3.335

5 VLC 3.3 3.335

IC201 (DIR/CS8422)

3 VA 3.3 3.332

22 VL 3.3 3.332

IC400 (MOTOR DRIVE/AM5890)

8 VCC1 5 5.088

19 VCC2 5 5.088

IC500 (MPEG/MT1389)

AVDD12 1.238

AVDD33 3.34

DVDD12 1.238

DVDD33 3.34

IC503 (SDRAM/EM639165TSA)

1 VDD 3.3 3.361

IC504 (Serial Flash/W25Q32FV)

8 VCC 3.3 3.337

IC601 (PWM/PS9860)

17 VDD_IO 3.3 3.382

43 VDD_IO 3.3 3.382

52 VDD_IO 3.3 3.382

Pin No. Pin Description Spec (V) Power-On Mode

IC700/IC701/IC702 (AMP/TAS5612)

2 VDD 12 11.96

22 VDD 12 11.96

29 PVDD 32/24 32.06/24.00

30 PVDD 32/24 32.06/24.00

31 PVDD 32/24 32.06/24.00

36 PVDD 32/24 32.06/24.00

37 PVDD 32/24 32.06/24.00

38 PVDD 32/24 32.06/24.00

2. CAPACITORS

Location Value & Spec Voltage_Spec

C411 100uF 6.3V 1.241 0

C429 220uF 16V 5.085 0

C604 220uF 6.3V 1.244 0

Power-On Mode

(+) (-)

Pin No. Pin Description Spec (V) Power-On Mode

CN101 (MAIN -> FRONT)

6 VCC33 3.4 3.377

11 3.3VA 3.4 3.405

CN102 (MAIN -> SMPS)

1 FL- -17.5 -17.52

2 VKK -20 -19.97

3 FL+ -14.85 -14.77

6 VCC_5.5VA 5.5 5.509

7 VCC_5.5VA 5.5 5.509

10 VCC_14VA 13 13.02

CN103 (MAIN -> JACK)

5 12V 12 11.962

8,9 VCC50 5 5.087

CN201 (MAIN -> BT)

1 3.3VA 3.4 3.405

CN601 (MAIN -> SMPS)

5 32V/24V 32V/24V 31.98/23.92

6 32V/24V 32V/24V 31.98/23.92

7 32V/24V 32V/24V 31.98/23.92

8 32V/24V 36V/24V 31.98/23.92

2-822-81

PRINTED CIRCUIT BOARD DIAGRAMS

1. SMPS P. C. BOARD

(TOP VIEW) (BOTTOM VIEW)

NOTE) Warning

Parts that are critical with respect to risk of fire or electrical shock.

2-842-83

2. MAIN & AMP P. C. BOARD

(TOP VIEW)

(BOTTOM VIEW)

2-862-85

3. JACK P. C. BOARD

(TOP VIEW)

(BOTTOM VIEW)

4. FRONT P. C. BOARD

(TOP VIEW)

(BOTTOM VIEW)

2-882-87

2-902-89

SECTION 3

CABINET & MAIN CHASSIS

CONTENTS

EXPLODED VIEWS ......................................................................................................................................... 3-3

1. CABINET AND MAIN FRAME SECTION ................................................................................................. 3-3

2. DECK MECHANISM SECTION ................................................................................................................ 3-5

3. PACKING ACCESSORY SECTION ......................................................................................................... 3-7

4. SPEAKER SECTION ................................................................................................................................ 3-8

4-1. CENTER SPEAKER ............................................................................................................................ 3-8

4-2. FRONT/ REAR SPEAKER .................................................................................................................. 3-9

4-3. PASSIVE SUBWOOFER ................................................................................................................... 3-10

3-1

3-2

A41

SMPS

A47

462

CN901

250

462

260

261

A44

261

320

465

265

465

470

462

465

462

MAIN

A46

CABLE3

A43

462

282

FRONT

281

CABLE1

462

JACK

A42

300

A52

CABLE2

462

262

OPTIONAL PART

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

NOTES) THE EXCLAMATION POINT WITHIN AN

EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

2. DECK MECHANISM SECTION

1439

1013

1016

1026

1015

1012

1003

1024

1049

1005

1004

1437

1024

1001

1002

1024

A001

1030

1437

1024

1437

A006

1019

1018

1439

1043

1045

A005

1020

1050

1011

3. PACKING ACCESSORY SECTION

801 Owner’s manual

811 Video cable

900 Remote control

803 Packing

808 Battery

823 HDMI cable

825 FM antenna

804 Bag

803 Packing

802 Box, Master

WIRE80 WIRE81 WIRE70

WIRE60 WIRE61

Front Left Front Right Center

Rear Left Rear Right

Speaker cables

4. SPEAKER SECTION

4-1. CENTER SPEAKER

A700

4-2. FRONT/ REAR SPEAKER

A. Stand type

A600

B. Wall type (Mounting the speakers to a wall)

A600

651

650

A600

650

651

4-3. PASSIVE SUBWOOFER

A900

LG LHD625 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual